* memblock updates
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds
Hi folks !
Here's my current branch. This time build tested on sparc(64), arm,
powerpc and sh. I don't have a microblaze compiler at hand.
Not much difference from the previous one. Off the top of my head:
- Added the memblock_is_region_reserved() fix at the beginning
(I'll send that to Linus separately if we decide this series
shouldn't go in 2.6.36)
- Split the patch adding the new accessors into separate patches
for adding the accessors, converting each arch, and removing
the old accessors. This makes it clearer, easier to review,
etc... I added a couple new accessors for ARM.
- Added the ARM updates based on what's upstream now (involves
new memblock_is_memory() and memblock_is_memory_region() for
use by ARM, nothing fancy there).
So very little changes. I haven't changed the init sections so
the warnings reported by Steven are still there. I will fix them
as an addon patch as I don't believe there's any actual breakage.
Now, what do you guys want to do with this now ? I can ask Linus
to pull now or we can wait until the end of the merge window and
put it into -next for another round...
Cheers,
Ben.
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^ permalink raw reply [flat|nested] 113+ messages in thread
* [PATCH 01/43] memblock: Fix memblock_is_region_reserved() to return a boolean
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
All callers expect a boolean result which is true if the region
overlaps a reserved region. However, the implementation actually
returns -1 if there is no overlap, and a region index (0 based)
if there is.
Make it behave as callers (and common sense) expect.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 3024eb3..43840b3 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -504,7 +504,7 @@ int __init memblock_is_reserved(u64 addr)
int memblock_is_region_reserved(u64 base, u64 size)
{
- return memblock_overlaps_region(&memblock.reserved, base, size);
+ return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
/*
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 01/43] memblock: Fix memblock_is_region_reserved() to return a boolean
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
All callers expect a boolean result which is true if the region
overlaps a reserved region. However, the implementation actually
returns -1 if there is no overlap, and a region index (0 based)
if there is.
Make it behave as callers (and common sense) expect.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 3024eb3..43840b3 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -504,7 +504,7 @@ int __init memblock_is_reserved(u64 addr)
int memblock_is_region_reserved(u64 base, u64 size)
{
- return memblock_overlaps_region(&memblock.reserved, base, size);
+ return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
/*
--
1.7.0.4
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* [PATCH 02/43] memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/mm/init.c | 2 +-
arch/arm/plat-omap/fb.c | 2 +-
arch/microblaze/mm/init.c | 4 +-
arch/powerpc/mm/hash_utils_64.c | 2 +-
arch/powerpc/mm/mem.c | 26 +++---
arch/powerpc/platforms/embedded6xx/wii.c | 2 +-
arch/sparc/mm/init_64.c | 6 +-
drivers/video/omap2/vram.c | 2 +-
include/linux/memblock.h | 24 ++--
mm/memblock.c | 168 +++++++++++++++---------------
10 files changed, 118 insertions(+), 120 deletions(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 7185b00..d1496e6 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -237,7 +237,7 @@ static void __init arm_bootmem_free(struct meminfo *mi, unsigned long min,
#ifndef CONFIG_SPARSEMEM
int pfn_valid(unsigned long pfn)
{
- struct memblock_region *mem = &memblock.memory;
+ struct memblock_type *mem = &memblock.memory;
unsigned int left = 0, right = mem->cnt;
do {
diff --git a/arch/arm/plat-omap/fb.c b/arch/arm/plat-omap/fb.c
index 0054b95..05bf228 100644
--- a/arch/arm/plat-omap/fb.c
+++ b/arch/arm/plat-omap/fb.c
@@ -173,7 +173,7 @@ static int check_fbmem_region(int region_idx, struct omapfb_mem_region *rg,
static int valid_sdram(unsigned long addr, unsigned long size)
{
- struct memblock_property res;
+ struct memblock_region res;
res.base = addr;
res.size = size;
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index db59349..afd6494 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -77,8 +77,8 @@ void __init setup_memory(void)
/* Find main memory where is the kernel */
for (i = 0; i < memblock.memory.cnt; i++) {
- memory_start = (u32) memblock.memory.region[i].base;
- memory_end = (u32) memblock.memory.region[i].base
+ memory_start = (u32) memblock.memory.regions[i].base;
+ memory_end = (u32) memblock.memory.regions[i].base
+ (u32) memblock.memory.region[i].size;
if ((memory_start <= (u32)_text) &&
((u32)_text <= memory_end)) {
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 09dffe6..b1a3784 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -660,7 +660,7 @@ static void __init htab_initialize(void)
/* create bolted the linear mapping in the hash table */
for (i=0; i < memblock.memory.cnt; i++) {
- base = (unsigned long)__va(memblock.memory.region[i].base);
+ base = (unsigned long)__va(memblock.memory.regions[i].base);
size = memblock.memory.region[i].size;
DBG("creating mapping for region: %lx..%lx (prot: %lx)\n",
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 1a84a8d..a33f5c1 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -86,10 +86,10 @@ int page_is_ram(unsigned long pfn)
for (i=0; i < memblock.memory.cnt; i++) {
unsigned long base;
- base = memblock.memory.region[i].base;
+ base = memblock.memory.regions[i].base;
if ((paddr >= base) &&
- (paddr < (base + memblock.memory.region[i].size))) {
+ (paddr < (base + memblock.memory.regions[i].size))) {
return 1;
}
}
@@ -149,7 +149,7 @@ int
walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
void *arg, int (*func)(unsigned long, unsigned long, void *))
{
- struct memblock_property res;
+ struct memblock_region res;
unsigned long pfn, len;
u64 end;
int ret = -1;
@@ -206,7 +206,7 @@ void __init do_init_bootmem(void)
/* Add active regions with valid PFNs */
for (i = 0; i < memblock.memory.cnt; i++) {
unsigned long start_pfn, end_pfn;
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
+ start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
add_active_range(0, start_pfn, end_pfn);
}
@@ -219,16 +219,16 @@ void __init do_init_bootmem(void)
/* reserve the sections we're already using */
for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long addr = memblock.reserved.region[i].base +
+ unsigned long addr = memblock.reserved.regions[i].base +
memblock_size_bytes(&memblock.reserved, i) - 1;
if (addr < lowmem_end_addr)
- reserve_bootmem(memblock.reserved.region[i].base,
+ reserve_bootmem(memblock.reserved.regions[i].base,
memblock_size_bytes(&memblock.reserved, i),
BOOTMEM_DEFAULT);
- else if (memblock.reserved.region[i].base < lowmem_end_addr) {
+ else if (memblock.reserved.regions[i].base < lowmem_end_addr) {
unsigned long adjusted_size = lowmem_end_addr -
- memblock.reserved.region[i].base;
- reserve_bootmem(memblock.reserved.region[i].base,
+ memblock.reserved.regions[i].base;
+ reserve_bootmem(memblock.reserved.regions[i].base,
adjusted_size, BOOTMEM_DEFAULT);
}
}
@@ -237,7 +237,7 @@ void __init do_init_bootmem(void)
/* reserve the sections we're already using */
for (i = 0; i < memblock.reserved.cnt; i++)
- reserve_bootmem(memblock.reserved.region[i].base,
+ reserve_bootmem(memblock.reserved.regions[i].base,
memblock_size_bytes(&memblock.reserved, i),
BOOTMEM_DEFAULT);
@@ -257,10 +257,10 @@ static int __init mark_nonram_nosave(void)
for (i = 0; i < memblock.memory.cnt - 1; i++) {
memblock_region_max_pfn =
- (memblock.memory.region[i].base >> PAGE_SHIFT) +
- (memblock.memory.region[i].size >> PAGE_SHIFT);
+ (memblock.memory.regions[i].base >> PAGE_SHIFT) +
+ (memblock.memory.regions[i].size >> PAGE_SHIFT);
memblock_next_region_start_pfn =
- memblock.memory.region[i+1].base >> PAGE_SHIFT;
+ memblock.memory.regions[i+1].base >> PAGE_SHIFT;
if (memblock_region_max_pfn < memblock_next_region_start_pfn)
register_nosave_region(memblock_region_max_pfn,
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
index 5cdcc7c..8450c29 100644
--- a/arch/powerpc/platforms/embedded6xx/wii.c
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -65,7 +65,7 @@ static int __init page_aligned(unsigned long x)
void __init wii_memory_fixups(void)
{
- struct memblock_property *p = memblock.memory.region;
+ struct memblock_region *p = memblock.memory.region;
/*
* This is part of a workaround to allow the use of two
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index f043451..16d8bee 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -978,7 +978,7 @@ static void __init add_node_ranges(void)
unsigned long size = memblock_size_bytes(&memblock.memory, i);
unsigned long start, end;
- start = memblock.memory.region[i].base;
+ start = memblock.memory.regions[i].base;
end = start + size;
while (start < end) {
unsigned long this_end;
@@ -1299,7 +1299,7 @@ static void __init bootmem_init_nonnuma(void)
if (!size)
continue;
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
+ start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
add_active_range(0, start_pfn, end_pfn);
}
@@ -1339,7 +1339,7 @@ static void __init trim_reserved_in_node(int nid)
numadbg(" trim_reserved_in_node(%d)\n", nid);
for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long start = memblock.reserved.region[i].base;
+ unsigned long start = memblock.reserved.regions[i].base;
unsigned long size = memblock_size_bytes(&memblock.reserved, i);
unsigned long end = start + size;
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index f6fdc20..0f2532b 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -554,7 +554,7 @@ void __init omap_vram_reserve_sdram_memblock(void)
size = PAGE_ALIGN(size);
if (paddr) {
- struct memblock_property res;
+ struct memblock_region res;
res.base = paddr;
res.size = size;
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index a59faf2..86e7daf 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -18,22 +18,22 @@
#define MAX_MEMBLOCK_REGIONS 128
-struct memblock_property {
+struct memblock_region {
u64 base;
u64 size;
};
-struct memblock_region {
+struct memblock_type {
unsigned long cnt;
u64 size;
- struct memblock_property region[MAX_MEMBLOCK_REGIONS+1];
+ struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
};
struct memblock {
unsigned long debug;
u64 rmo_size;
- struct memblock_region memory;
- struct memblock_region reserved;
+ struct memblock_type memory;
+ struct memblock_type reserved;
};
extern struct memblock memblock;
@@ -56,27 +56,27 @@ extern u64 memblock_end_of_DRAM(void);
extern void __init memblock_enforce_memory_limit(u64 memory_limit);
extern int __init memblock_is_reserved(u64 addr);
extern int memblock_is_region_reserved(u64 base, u64 size);
-extern int memblock_find(struct memblock_property *res);
+extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
static inline u64
-memblock_size_bytes(struct memblock_region *type, unsigned long region_nr)
+memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
{
- return type->region[region_nr].size;
+ return type->regions[region_nr].size;
}
static inline u64
-memblock_size_pages(struct memblock_region *type, unsigned long region_nr)
+memblock_size_pages(struct memblock_type *type, unsigned long region_nr)
{
return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
}
static inline u64
-memblock_start_pfn(struct memblock_region *type, unsigned long region_nr)
+memblock_start_pfn(struct memblock_type *type, unsigned long region_nr)
{
- return type->region[region_nr].base >> PAGE_SHIFT;
+ return type->regions[region_nr].base >> PAGE_SHIFT;
}
static inline u64
-memblock_end_pfn(struct memblock_region *type, unsigned long region_nr)
+memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
{
return memblock_start_pfn(type, region_nr) +
memblock_size_pages(type, region_nr);
diff --git a/mm/memblock.c b/mm/memblock.c
index 43840b3..6f407cc 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -29,7 +29,7 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);
-static void memblock_dump(struct memblock_region *region, char *name)
+static void memblock_dump(struct memblock_type *region, char *name)
{
unsigned long long base, size;
int i;
@@ -37,8 +37,8 @@ static void memblock_dump(struct memblock_region *region, char *name)
pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
for (i = 0; i < region->cnt; i++) {
- base = region->region[i].base;
- size = region->region[i].size;
+ base = region->regions[i].base;
+ size = region->regions[i].size;
pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
name, i, base, base + size - 1, size);
@@ -74,34 +74,34 @@ static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
return 0;
}
-static long memblock_regions_adjacent(struct memblock_region *rgn,
+static long memblock_regions_adjacent(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
- u64 base1 = rgn->region[r1].base;
- u64 size1 = rgn->region[r1].size;
- u64 base2 = rgn->region[r2].base;
- u64 size2 = rgn->region[r2].size;
+ u64 base1 = type->regions[r1].base;
+ u64 size1 = type->regions[r1].size;
+ u64 base2 = type->regions[r2].base;
+ u64 size2 = type->regions[r2].size;
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
-static void memblock_remove_region(struct memblock_region *rgn, unsigned long r)
+static void memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
- for (i = r; i < rgn->cnt - 1; i++) {
- rgn->region[i].base = rgn->region[i + 1].base;
- rgn->region[i].size = rgn->region[i + 1].size;
+ for (i = r; i < type->cnt - 1; i++) {
+ type->regions[i].base = type->regions[i + 1].base;
+ type->regions[i].size = type->regions[i + 1].size;
}
- rgn->cnt--;
+ type->cnt--;
}
/* Assumption: base addr of region 1 < base addr of region 2 */
-static void memblock_coalesce_regions(struct memblock_region *rgn,
+static void memblock_coalesce_regions(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
- rgn->region[r1].size += rgn->region[r2].size;
- memblock_remove_region(rgn, r2);
+ type->regions[r1].size += type->regions[r2].size;
+ memblock_remove_region(type, r2);
}
void __init memblock_init(void)
@@ -109,13 +109,13 @@ void __init memblock_init(void)
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
*/
- memblock.memory.region[0].base = 0;
- memblock.memory.region[0].size = 0;
+ memblock.memory.regions[0].base = 0;
+ memblock.memory.regions[0].size = 0;
memblock.memory.cnt = 1;
/* Ditto. */
- memblock.reserved.region[0].base = 0;
- memblock.reserved.region[0].size = 0;
+ memblock.reserved.regions[0].base = 0;
+ memblock.reserved.regions[0].size = 0;
memblock.reserved.cnt = 1;
}
@@ -126,24 +126,24 @@ void __init memblock_analyze(void)
memblock.memory.size = 0;
for (i = 0; i < memblock.memory.cnt; i++)
- memblock.memory.size += memblock.memory.region[i].size;
+ memblock.memory.size += memblock.memory.regions[i].size;
}
-static long memblock_add_region(struct memblock_region *rgn, u64 base, u64 size)
+static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
{
unsigned long coalesced = 0;
long adjacent, i;
- if ((rgn->cnt == 1) && (rgn->region[0].size == 0)) {
- rgn->region[0].base = base;
- rgn->region[0].size = size;
+ if ((type->cnt == 1) && (type->regions[0].size == 0)) {
+ type->regions[0].base = base;
+ type->regions[0].size = size;
return 0;
}
/* First try and coalesce this MEMBLOCK with another. */
- for (i = 0; i < rgn->cnt; i++) {
- u64 rgnbase = rgn->region[i].base;
- u64 rgnsize = rgn->region[i].size;
+ for (i = 0; i < type->cnt; i++) {
+ u64 rgnbase = type->regions[i].base;
+ u64 rgnsize = type->regions[i].size;
if ((rgnbase == base) && (rgnsize == size))
/* Already have this region, so we're done */
@@ -151,61 +151,59 @@ static long memblock_add_region(struct memblock_region *rgn, u64 base, u64 size)
adjacent = memblock_addrs_adjacent(base, size, rgnbase, rgnsize);
if (adjacent > 0) {
- rgn->region[i].base -= size;
- rgn->region[i].size += size;
+ type->regions[i].base -= size;
+ type->regions[i].size += size;
coalesced++;
break;
} else if (adjacent < 0) {
- rgn->region[i].size += size;
+ type->regions[i].size += size;
coalesced++;
break;
}
}
- if ((i < rgn->cnt - 1) && memblock_regions_adjacent(rgn, i, i+1)) {
- memblock_coalesce_regions(rgn, i, i+1);
+ if ((i < type->cnt - 1) && memblock_regions_adjacent(type, i, i+1)) {
+ memblock_coalesce_regions(type, i, i+1);
coalesced++;
}
if (coalesced)
return coalesced;
- if (rgn->cnt >= MAX_MEMBLOCK_REGIONS)
+ if (type->cnt >= MAX_MEMBLOCK_REGIONS)
return -1;
/* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */
- for (i = rgn->cnt - 1; i >= 0; i--) {
- if (base < rgn->region[i].base) {
- rgn->region[i+1].base = rgn->region[i].base;
- rgn->region[i+1].size = rgn->region[i].size;
+ for (i = type->cnt - 1; i >= 0; i--) {
+ if (base < type->regions[i].base) {
+ type->regions[i+1].base = type->regions[i].base;
+ type->regions[i+1].size = type->regions[i].size;
} else {
- rgn->region[i+1].base = base;
- rgn->region[i+1].size = size;
+ type->regions[i+1].base = base;
+ type->regions[i+1].size = size;
break;
}
}
- if (base < rgn->region[0].base) {
- rgn->region[0].base = base;
- rgn->region[0].size = size;
+ if (base < type->regions[0].base) {
+ type->regions[0].base = base;
+ type->regions[0].size = size;
}
- rgn->cnt++;
+ type->cnt++;
return 0;
}
long memblock_add(u64 base, u64 size)
{
- struct memblock_region *_rgn = &memblock.memory;
-
/* On pSeries LPAR systems, the first MEMBLOCK is our RMO region. */
if (base == 0)
memblock.rmo_size = size;
- return memblock_add_region(_rgn, base, size);
+ return memblock_add_region(&memblock.memory, base, size);
}
-static long __memblock_remove(struct memblock_region *rgn, u64 base, u64 size)
+static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
{
u64 rgnbegin, rgnend;
u64 end = base + size;
@@ -214,34 +212,34 @@ static long __memblock_remove(struct memblock_region *rgn, u64 base, u64 size)
rgnbegin = rgnend = 0; /* supress gcc warnings */
/* Find the region where (base, size) belongs to */
- for (i=0; i < rgn->cnt; i++) {
- rgnbegin = rgn->region[i].base;
- rgnend = rgnbegin + rgn->region[i].size;
+ for (i=0; i < type->cnt; i++) {
+ rgnbegin = type->regions[i].base;
+ rgnend = rgnbegin + type->regions[i].size;
if ((rgnbegin <= base) && (end <= rgnend))
break;
}
/* Didn't find the region */
- if (i == rgn->cnt)
+ if (i == type->cnt)
return -1;
/* Check to see if we are removing entire region */
if ((rgnbegin == base) && (rgnend == end)) {
- memblock_remove_region(rgn, i);
+ memblock_remove_region(type, i);
return 0;
}
/* Check to see if region is matching at the front */
if (rgnbegin == base) {
- rgn->region[i].base = end;
- rgn->region[i].size -= size;
+ type->regions[i].base = end;
+ type->regions[i].size -= size;
return 0;
}
/* Check to see if the region is matching at the end */
if (rgnend == end) {
- rgn->region[i].size -= size;
+ type->regions[i].size -= size;
return 0;
}
@@ -249,8 +247,8 @@ static long __memblock_remove(struct memblock_region *rgn, u64 base, u64 size)
* We need to split the entry - adjust the current one to the
* beginging of the hole and add the region after hole.
*/
- rgn->region[i].size = base - rgn->region[i].base;
- return memblock_add_region(rgn, end, rgnend - end);
+ type->regions[i].size = base - type->regions[i].base;
+ return memblock_add_region(type, end, rgnend - end);
}
long memblock_remove(u64 base, u64 size)
@@ -265,25 +263,25 @@ long __init memblock_free(u64 base, u64 size)
long __init memblock_reserve(u64 base, u64 size)
{
- struct memblock_region *_rgn = &memblock.reserved;
+ struct memblock_type *_rgn = &memblock.reserved;
BUG_ON(0 == size);
return memblock_add_region(_rgn, base, size);
}
-long memblock_overlaps_region(struct memblock_region *rgn, u64 base, u64 size)
+long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
{
unsigned long i;
- for (i = 0; i < rgn->cnt; i++) {
- u64 rgnbase = rgn->region[i].base;
- u64 rgnsize = rgn->region[i].size;
+ for (i = 0; i < type->cnt; i++) {
+ u64 rgnbase = type->regions[i].base;
+ u64 rgnsize = type->regions[i].size;
if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
break;
}
- return (i < rgn->cnt) ? i : -1;
+ return (i < type->cnt) ? i : -1;
}
static u64 memblock_align_down(u64 addr, u64 size)
@@ -311,7 +309,7 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
base = ~(u64)0;
return base;
}
- res_base = memblock.reserved.region[j].base;
+ res_base = memblock.reserved.regions[j].base;
if (res_base < size)
break;
base = memblock_align_down(res_base - size, align);
@@ -320,7 +318,7 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
return ~(u64)0;
}
-static u64 __init memblock_alloc_nid_region(struct memblock_property *mp,
+static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
u64 (*nid_range)(u64, u64, int *),
u64 size, u64 align, int nid)
{
@@ -350,7 +348,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_property *mp,
u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
u64 (*nid_range)(u64 start, u64 end, int *nid))
{
- struct memblock_region *mem = &memblock.memory;
+ struct memblock_type *mem = &memblock.memory;
int i;
BUG_ON(0 == size);
@@ -358,7 +356,7 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
size = memblock_align_up(size, align);
for (i = 0; i < mem->cnt; i++) {
- u64 ret = memblock_alloc_nid_region(&mem->region[i],
+ u64 ret = memblock_alloc_nid_region(&mem->regions[i],
nid_range,
size, align, nid);
if (ret != ~(u64)0)
@@ -402,8 +400,8 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
max_addr = MEMBLOCK_REAL_LIMIT;
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
- u64 memblockbase = memblock.memory.region[i].base;
- u64 memblocksize = memblock.memory.region[i].size;
+ u64 memblockbase = memblock.memory.regions[i].base;
+ u64 memblocksize = memblock.memory.regions[i].size;
if (memblocksize < size)
continue;
@@ -423,7 +421,7 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
return 0;
return base;
}
- res_base = memblock.reserved.region[j].base;
+ res_base = memblock.reserved.regions[j].base;
if (res_base < size)
break;
base = memblock_align_down(res_base - size, align);
@@ -442,7 +440,7 @@ u64 memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;
- return (memblock.memory.region[idx].base + memblock.memory.region[idx].size);
+ return (memblock.memory.regions[idx].base + memblock.memory.regions[idx].size);
}
/* You must call memblock_analyze() after this. */
@@ -450,7 +448,7 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
{
unsigned long i;
u64 limit;
- struct memblock_property *p;
+ struct memblock_region *p;
if (!memory_limit)
return;
@@ -458,24 +456,24 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
/* Truncate the memblock regions to satisfy the memory limit. */
limit = memory_limit;
for (i = 0; i < memblock.memory.cnt; i++) {
- if (limit > memblock.memory.region[i].size) {
- limit -= memblock.memory.region[i].size;
+ if (limit > memblock.memory.regions[i].size) {
+ limit -= memblock.memory.regions[i].size;
continue;
}
- memblock.memory.region[i].size = limit;
+ memblock.memory.regions[i].size = limit;
memblock.memory.cnt = i + 1;
break;
}
- if (memblock.memory.region[0].size < memblock.rmo_size)
- memblock.rmo_size = memblock.memory.region[0].size;
+ if (memblock.memory.regions[0].size < memblock.rmo_size)
+ memblock.rmo_size = memblock.memory.regions[0].size;
memory_limit = memblock_end_of_DRAM();
/* And truncate any reserves above the limit also. */
for (i = 0; i < memblock.reserved.cnt; i++) {
- p = &memblock.reserved.region[i];
+ p = &memblock.reserved.regions[i];
if (p->base > memory_limit)
p->size = 0;
@@ -494,9 +492,9 @@ int __init memblock_is_reserved(u64 addr)
int i;
for (i = 0; i < memblock.reserved.cnt; i++) {
- u64 upper = memblock.reserved.region[i].base +
- memblock.reserved.region[i].size - 1;
- if ((addr >= memblock.reserved.region[i].base) && (addr <= upper))
+ u64 upper = memblock.reserved.regions[i].base +
+ memblock.reserved.regions[i].size - 1;
+ if ((addr >= memblock.reserved.regions[i].base) && (addr <= upper))
return 1;
}
return 0;
@@ -511,7 +509,7 @@ int memblock_is_region_reserved(u64 base, u64 size)
* Given a <base, len>, find which memory regions belong to this range.
* Adjust the request and return a contiguous chunk.
*/
-int memblock_find(struct memblock_property *res)
+int memblock_find(struct memblock_region *res)
{
int i;
u64 rstart, rend;
@@ -520,8 +518,8 @@ int memblock_find(struct memblock_property *res)
rend = rstart + res->size - 1;
for (i = 0; i < memblock.memory.cnt; i++) {
- u64 start = memblock.memory.region[i].base;
- u64 end = start + memblock.memory.region[i].size - 1;
+ u64 start = memblock.memory.regions[i].base;
+ u64 end = start + memblock.memory.regions[i].size - 1;
if (start > rend)
return -1;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 02/43] memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/mm/init.c | 2 +-
arch/arm/plat-omap/fb.c | 2 +-
arch/microblaze/mm/init.c | 4 +-
arch/powerpc/mm/hash_utils_64.c | 2 +-
arch/powerpc/mm/mem.c | 26 +++---
arch/powerpc/platforms/embedded6xx/wii.c | 2 +-
arch/sparc/mm/init_64.c | 6 +-
drivers/video/omap2/vram.c | 2 +-
include/linux/memblock.h | 24 ++--
mm/memblock.c | 168 +++++++++++++++---------------
10 files changed, 118 insertions(+), 120 deletions(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 7185b00..d1496e6 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -237,7 +237,7 @@ static void __init arm_bootmem_free(struct meminfo *mi, unsigned long min,
#ifndef CONFIG_SPARSEMEM
int pfn_valid(unsigned long pfn)
{
- struct memblock_region *mem = &memblock.memory;
+ struct memblock_type *mem = &memblock.memory;
unsigned int left = 0, right = mem->cnt;
do {
diff --git a/arch/arm/plat-omap/fb.c b/arch/arm/plat-omap/fb.c
index 0054b95..05bf228 100644
--- a/arch/arm/plat-omap/fb.c
+++ b/arch/arm/plat-omap/fb.c
@@ -173,7 +173,7 @@ static int check_fbmem_region(int region_idx, struct omapfb_mem_region *rg,
static int valid_sdram(unsigned long addr, unsigned long size)
{
- struct memblock_property res;
+ struct memblock_region res;
res.base = addr;
res.size = size;
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index db59349..afd6494 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -77,8 +77,8 @@ void __init setup_memory(void)
/* Find main memory where is the kernel */
for (i = 0; i < memblock.memory.cnt; i++) {
- memory_start = (u32) memblock.memory.region[i].base;
- memory_end = (u32) memblock.memory.region[i].base
+ memory_start = (u32) memblock.memory.regions[i].base;
+ memory_end = (u32) memblock.memory.regions[i].base
+ (u32) memblock.memory.region[i].size;
if ((memory_start <= (u32)_text) &&
((u32)_text <= memory_end)) {
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 09dffe6..b1a3784 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -660,7 +660,7 @@ static void __init htab_initialize(void)
/* create bolted the linear mapping in the hash table */
for (i=0; i < memblock.memory.cnt; i++) {
- base = (unsigned long)__va(memblock.memory.region[i].base);
+ base = (unsigned long)__va(memblock.memory.regions[i].base);
size = memblock.memory.region[i].size;
DBG("creating mapping for region: %lx..%lx (prot: %lx)\n",
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 1a84a8d..a33f5c1 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -86,10 +86,10 @@ int page_is_ram(unsigned long pfn)
for (i=0; i < memblock.memory.cnt; i++) {
unsigned long base;
- base = memblock.memory.region[i].base;
+ base = memblock.memory.regions[i].base;
if ((paddr >= base) &&
- (paddr < (base + memblock.memory.region[i].size))) {
+ (paddr < (base + memblock.memory.regions[i].size))) {
return 1;
}
}
@@ -149,7 +149,7 @@ int
walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
void *arg, int (*func)(unsigned long, unsigned long, void *))
{
- struct memblock_property res;
+ struct memblock_region res;
unsigned long pfn, len;
u64 end;
int ret = -1;
@@ -206,7 +206,7 @@ void __init do_init_bootmem(void)
/* Add active regions with valid PFNs */
for (i = 0; i < memblock.memory.cnt; i++) {
unsigned long start_pfn, end_pfn;
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
+ start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
add_active_range(0, start_pfn, end_pfn);
}
@@ -219,16 +219,16 @@ void __init do_init_bootmem(void)
/* reserve the sections we're already using */
for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long addr = memblock.reserved.region[i].base +
+ unsigned long addr = memblock.reserved.regions[i].base +
memblock_size_bytes(&memblock.reserved, i) - 1;
if (addr < lowmem_end_addr)
- reserve_bootmem(memblock.reserved.region[i].base,
+ reserve_bootmem(memblock.reserved.regions[i].base,
memblock_size_bytes(&memblock.reserved, i),
BOOTMEM_DEFAULT);
- else if (memblock.reserved.region[i].base < lowmem_end_addr) {
+ else if (memblock.reserved.regions[i].base < lowmem_end_addr) {
unsigned long adjusted_size = lowmem_end_addr -
- memblock.reserved.region[i].base;
- reserve_bootmem(memblock.reserved.region[i].base,
+ memblock.reserved.regions[i].base;
+ reserve_bootmem(memblock.reserved.regions[i].base,
adjusted_size, BOOTMEM_DEFAULT);
}
}
@@ -237,7 +237,7 @@ void __init do_init_bootmem(void)
/* reserve the sections we're already using */
for (i = 0; i < memblock.reserved.cnt; i++)
- reserve_bootmem(memblock.reserved.region[i].base,
+ reserve_bootmem(memblock.reserved.regions[i].base,
memblock_size_bytes(&memblock.reserved, i),
BOOTMEM_DEFAULT);
@@ -257,10 +257,10 @@ static int __init mark_nonram_nosave(void)
for (i = 0; i < memblock.memory.cnt - 1; i++) {
memblock_region_max_pfn =
- (memblock.memory.region[i].base >> PAGE_SHIFT) +
- (memblock.memory.region[i].size >> PAGE_SHIFT);
+ (memblock.memory.regions[i].base >> PAGE_SHIFT) +
+ (memblock.memory.regions[i].size >> PAGE_SHIFT);
memblock_next_region_start_pfn =
- memblock.memory.region[i+1].base >> PAGE_SHIFT;
+ memblock.memory.regions[i+1].base >> PAGE_SHIFT;
if (memblock_region_max_pfn < memblock_next_region_start_pfn)
register_nosave_region(memblock_region_max_pfn,
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
index 5cdcc7c..8450c29 100644
--- a/arch/powerpc/platforms/embedded6xx/wii.c
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -65,7 +65,7 @@ static int __init page_aligned(unsigned long x)
void __init wii_memory_fixups(void)
{
- struct memblock_property *p = memblock.memory.region;
+ struct memblock_region *p = memblock.memory.region;
/*
* This is part of a workaround to allow the use of two
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index f043451..16d8bee 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -978,7 +978,7 @@ static void __init add_node_ranges(void)
unsigned long size = memblock_size_bytes(&memblock.memory, i);
unsigned long start, end;
- start = memblock.memory.region[i].base;
+ start = memblock.memory.regions[i].base;
end = start + size;
while (start < end) {
unsigned long this_end;
@@ -1299,7 +1299,7 @@ static void __init bootmem_init_nonnuma(void)
if (!size)
continue;
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
+ start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
add_active_range(0, start_pfn, end_pfn);
}
@@ -1339,7 +1339,7 @@ static void __init trim_reserved_in_node(int nid)
numadbg(" trim_reserved_in_node(%d)\n", nid);
for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long start = memblock.reserved.region[i].base;
+ unsigned long start = memblock.reserved.regions[i].base;
unsigned long size = memblock_size_bytes(&memblock.reserved, i);
unsigned long end = start + size;
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index f6fdc20..0f2532b 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -554,7 +554,7 @@ void __init omap_vram_reserve_sdram_memblock(void)
size = PAGE_ALIGN(size);
if (paddr) {
- struct memblock_property res;
+ struct memblock_region res;
res.base = paddr;
res.size = size;
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index a59faf2..86e7daf 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -18,22 +18,22 @@
#define MAX_MEMBLOCK_REGIONS 128
-struct memblock_property {
+struct memblock_region {
u64 base;
u64 size;
};
-struct memblock_region {
+struct memblock_type {
unsigned long cnt;
u64 size;
- struct memblock_property region[MAX_MEMBLOCK_REGIONS+1];
+ struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
};
struct memblock {
unsigned long debug;
u64 rmo_size;
- struct memblock_region memory;
- struct memblock_region reserved;
+ struct memblock_type memory;
+ struct memblock_type reserved;
};
extern struct memblock memblock;
@@ -56,27 +56,27 @@ extern u64 memblock_end_of_DRAM(void);
extern void __init memblock_enforce_memory_limit(u64 memory_limit);
extern int __init memblock_is_reserved(u64 addr);
extern int memblock_is_region_reserved(u64 base, u64 size);
-extern int memblock_find(struct memblock_property *res);
+extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
static inline u64
-memblock_size_bytes(struct memblock_region *type, unsigned long region_nr)
+memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
{
- return type->region[region_nr].size;
+ return type->regions[region_nr].size;
}
static inline u64
-memblock_size_pages(struct memblock_region *type, unsigned long region_nr)
+memblock_size_pages(struct memblock_type *type, unsigned long region_nr)
{
return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
}
static inline u64
-memblock_start_pfn(struct memblock_region *type, unsigned long region_nr)
+memblock_start_pfn(struct memblock_type *type, unsigned long region_nr)
{
- return type->region[region_nr].base >> PAGE_SHIFT;
+ return type->regions[region_nr].base >> PAGE_SHIFT;
}
static inline u64
-memblock_end_pfn(struct memblock_region *type, unsigned long region_nr)
+memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
{
return memblock_start_pfn(type, region_nr) +
memblock_size_pages(type, region_nr);
diff --git a/mm/memblock.c b/mm/memblock.c
index 43840b3..6f407cc 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -29,7 +29,7 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);
-static void memblock_dump(struct memblock_region *region, char *name)
+static void memblock_dump(struct memblock_type *region, char *name)
{
unsigned long long base, size;
int i;
@@ -37,8 +37,8 @@ static void memblock_dump(struct memblock_region *region, char *name)
pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
for (i = 0; i < region->cnt; i++) {
- base = region->region[i].base;
- size = region->region[i].size;
+ base = region->regions[i].base;
+ size = region->regions[i].size;
pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
name, i, base, base + size - 1, size);
@@ -74,34 +74,34 @@ static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
return 0;
}
-static long memblock_regions_adjacent(struct memblock_region *rgn,
+static long memblock_regions_adjacent(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
- u64 base1 = rgn->region[r1].base;
- u64 size1 = rgn->region[r1].size;
- u64 base2 = rgn->region[r2].base;
- u64 size2 = rgn->region[r2].size;
+ u64 base1 = type->regions[r1].base;
+ u64 size1 = type->regions[r1].size;
+ u64 base2 = type->regions[r2].base;
+ u64 size2 = type->regions[r2].size;
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
-static void memblock_remove_region(struct memblock_region *rgn, unsigned long r)
+static void memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
- for (i = r; i < rgn->cnt - 1; i++) {
- rgn->region[i].base = rgn->region[i + 1].base;
- rgn->region[i].size = rgn->region[i + 1].size;
+ for (i = r; i < type->cnt - 1; i++) {
+ type->regions[i].base = type->regions[i + 1].base;
+ type->regions[i].size = type->regions[i + 1].size;
}
- rgn->cnt--;
+ type->cnt--;
}
/* Assumption: base addr of region 1 < base addr of region 2 */
-static void memblock_coalesce_regions(struct memblock_region *rgn,
+static void memblock_coalesce_regions(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
- rgn->region[r1].size += rgn->region[r2].size;
- memblock_remove_region(rgn, r2);
+ type->regions[r1].size += type->regions[r2].size;
+ memblock_remove_region(type, r2);
}
void __init memblock_init(void)
@@ -109,13 +109,13 @@ void __init memblock_init(void)
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
*/
- memblock.memory.region[0].base = 0;
- memblock.memory.region[0].size = 0;
+ memblock.memory.regions[0].base = 0;
+ memblock.memory.regions[0].size = 0;
memblock.memory.cnt = 1;
/* Ditto. */
- memblock.reserved.region[0].base = 0;
- memblock.reserved.region[0].size = 0;
+ memblock.reserved.regions[0].base = 0;
+ memblock.reserved.regions[0].size = 0;
memblock.reserved.cnt = 1;
}
@@ -126,24 +126,24 @@ void __init memblock_analyze(void)
memblock.memory.size = 0;
for (i = 0; i < memblock.memory.cnt; i++)
- memblock.memory.size += memblock.memory.region[i].size;
+ memblock.memory.size += memblock.memory.regions[i].size;
}
-static long memblock_add_region(struct memblock_region *rgn, u64 base, u64 size)
+static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
{
unsigned long coalesced = 0;
long adjacent, i;
- if ((rgn->cnt == 1) && (rgn->region[0].size == 0)) {
- rgn->region[0].base = base;
- rgn->region[0].size = size;
+ if ((type->cnt == 1) && (type->regions[0].size == 0)) {
+ type->regions[0].base = base;
+ type->regions[0].size = size;
return 0;
}
/* First try and coalesce this MEMBLOCK with another. */
- for (i = 0; i < rgn->cnt; i++) {
- u64 rgnbase = rgn->region[i].base;
- u64 rgnsize = rgn->region[i].size;
+ for (i = 0; i < type->cnt; i++) {
+ u64 rgnbase = type->regions[i].base;
+ u64 rgnsize = type->regions[i].size;
if ((rgnbase == base) && (rgnsize == size))
/* Already have this region, so we're done */
@@ -151,61 +151,59 @@ static long memblock_add_region(struct memblock_region *rgn, u64 base, u64 size)
adjacent = memblock_addrs_adjacent(base, size, rgnbase, rgnsize);
if (adjacent > 0) {
- rgn->region[i].base -= size;
- rgn->region[i].size += size;
+ type->regions[i].base -= size;
+ type->regions[i].size += size;
coalesced++;
break;
} else if (adjacent < 0) {
- rgn->region[i].size += size;
+ type->regions[i].size += size;
coalesced++;
break;
}
}
- if ((i < rgn->cnt - 1) && memblock_regions_adjacent(rgn, i, i+1)) {
- memblock_coalesce_regions(rgn, i, i+1);
+ if ((i < type->cnt - 1) && memblock_regions_adjacent(type, i, i+1)) {
+ memblock_coalesce_regions(type, i, i+1);
coalesced++;
}
if (coalesced)
return coalesced;
- if (rgn->cnt >= MAX_MEMBLOCK_REGIONS)
+ if (type->cnt >= MAX_MEMBLOCK_REGIONS)
return -1;
/* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */
- for (i = rgn->cnt - 1; i >= 0; i--) {
- if (base < rgn->region[i].base) {
- rgn->region[i+1].base = rgn->region[i].base;
- rgn->region[i+1].size = rgn->region[i].size;
+ for (i = type->cnt - 1; i >= 0; i--) {
+ if (base < type->regions[i].base) {
+ type->regions[i+1].base = type->regions[i].base;
+ type->regions[i+1].size = type->regions[i].size;
} else {
- rgn->region[i+1].base = base;
- rgn->region[i+1].size = size;
+ type->regions[i+1].base = base;
+ type->regions[i+1].size = size;
break;
}
}
- if (base < rgn->region[0].base) {
- rgn->region[0].base = base;
- rgn->region[0].size = size;
+ if (base < type->regions[0].base) {
+ type->regions[0].base = base;
+ type->regions[0].size = size;
}
- rgn->cnt++;
+ type->cnt++;
return 0;
}
long memblock_add(u64 base, u64 size)
{
- struct memblock_region *_rgn = &memblock.memory;
-
/* On pSeries LPAR systems, the first MEMBLOCK is our RMO region. */
if (base == 0)
memblock.rmo_size = size;
- return memblock_add_region(_rgn, base, size);
+ return memblock_add_region(&memblock.memory, base, size);
}
-static long __memblock_remove(struct memblock_region *rgn, u64 base, u64 size)
+static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
{
u64 rgnbegin, rgnend;
u64 end = base + size;
@@ -214,34 +212,34 @@ static long __memblock_remove(struct memblock_region *rgn, u64 base, u64 size)
rgnbegin = rgnend = 0; /* supress gcc warnings */
/* Find the region where (base, size) belongs to */
- for (i=0; i < rgn->cnt; i++) {
- rgnbegin = rgn->region[i].base;
- rgnend = rgnbegin + rgn->region[i].size;
+ for (i=0; i < type->cnt; i++) {
+ rgnbegin = type->regions[i].base;
+ rgnend = rgnbegin + type->regions[i].size;
if ((rgnbegin <= base) && (end <= rgnend))
break;
}
/* Didn't find the region */
- if (i == rgn->cnt)
+ if (i == type->cnt)
return -1;
/* Check to see if we are removing entire region */
if ((rgnbegin == base) && (rgnend == end)) {
- memblock_remove_region(rgn, i);
+ memblock_remove_region(type, i);
return 0;
}
/* Check to see if region is matching at the front */
if (rgnbegin == base) {
- rgn->region[i].base = end;
- rgn->region[i].size -= size;
+ type->regions[i].base = end;
+ type->regions[i].size -= size;
return 0;
}
/* Check to see if the region is matching at the end */
if (rgnend == end) {
- rgn->region[i].size -= size;
+ type->regions[i].size -= size;
return 0;
}
@@ -249,8 +247,8 @@ static long __memblock_remove(struct memblock_region *rgn, u64 base, u64 size)
* We need to split the entry - adjust the current one to the
* beginging of the hole and add the region after hole.
*/
- rgn->region[i].size = base - rgn->region[i].base;
- return memblock_add_region(rgn, end, rgnend - end);
+ type->regions[i].size = base - type->regions[i].base;
+ return memblock_add_region(type, end, rgnend - end);
}
long memblock_remove(u64 base, u64 size)
@@ -265,25 +263,25 @@ long __init memblock_free(u64 base, u64 size)
long __init memblock_reserve(u64 base, u64 size)
{
- struct memblock_region *_rgn = &memblock.reserved;
+ struct memblock_type *_rgn = &memblock.reserved;
BUG_ON(0 == size);
return memblock_add_region(_rgn, base, size);
}
-long memblock_overlaps_region(struct memblock_region *rgn, u64 base, u64 size)
+long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
{
unsigned long i;
- for (i = 0; i < rgn->cnt; i++) {
- u64 rgnbase = rgn->region[i].base;
- u64 rgnsize = rgn->region[i].size;
+ for (i = 0; i < type->cnt; i++) {
+ u64 rgnbase = type->regions[i].base;
+ u64 rgnsize = type->regions[i].size;
if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
break;
}
- return (i < rgn->cnt) ? i : -1;
+ return (i < type->cnt) ? i : -1;
}
static u64 memblock_align_down(u64 addr, u64 size)
@@ -311,7 +309,7 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
base = ~(u64)0;
return base;
}
- res_base = memblock.reserved.region[j].base;
+ res_base = memblock.reserved.regions[j].base;
if (res_base < size)
break;
base = memblock_align_down(res_base - size, align);
@@ -320,7 +318,7 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
return ~(u64)0;
}
-static u64 __init memblock_alloc_nid_region(struct memblock_property *mp,
+static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
u64 (*nid_range)(u64, u64, int *),
u64 size, u64 align, int nid)
{
@@ -350,7 +348,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_property *mp,
u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
u64 (*nid_range)(u64 start, u64 end, int *nid))
{
- struct memblock_region *mem = &memblock.memory;
+ struct memblock_type *mem = &memblock.memory;
int i;
BUG_ON(0 == size);
@@ -358,7 +356,7 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
size = memblock_align_up(size, align);
for (i = 0; i < mem->cnt; i++) {
- u64 ret = memblock_alloc_nid_region(&mem->region[i],
+ u64 ret = memblock_alloc_nid_region(&mem->regions[i],
nid_range,
size, align, nid);
if (ret != ~(u64)0)
@@ -402,8 +400,8 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
max_addr = MEMBLOCK_REAL_LIMIT;
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
- u64 memblockbase = memblock.memory.region[i].base;
- u64 memblocksize = memblock.memory.region[i].size;
+ u64 memblockbase = memblock.memory.regions[i].base;
+ u64 memblocksize = memblock.memory.regions[i].size;
if (memblocksize < size)
continue;
@@ -423,7 +421,7 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
return 0;
return base;
}
- res_base = memblock.reserved.region[j].base;
+ res_base = memblock.reserved.regions[j].base;
if (res_base < size)
break;
base = memblock_align_down(res_base - size, align);
@@ -442,7 +440,7 @@ u64 memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;
- return (memblock.memory.region[idx].base + memblock.memory.region[idx].size);
+ return (memblock.memory.regions[idx].base + memblock.memory.regions[idx].size);
}
/* You must call memblock_analyze() after this. */
@@ -450,7 +448,7 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
{
unsigned long i;
u64 limit;
- struct memblock_property *p;
+ struct memblock_region *p;
if (!memory_limit)
return;
@@ -458,24 +456,24 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
/* Truncate the memblock regions to satisfy the memory limit. */
limit = memory_limit;
for (i = 0; i < memblock.memory.cnt; i++) {
- if (limit > memblock.memory.region[i].size) {
- limit -= memblock.memory.region[i].size;
+ if (limit > memblock.memory.regions[i].size) {
+ limit -= memblock.memory.regions[i].size;
continue;
}
- memblock.memory.region[i].size = limit;
+ memblock.memory.regions[i].size = limit;
memblock.memory.cnt = i + 1;
break;
}
- if (memblock.memory.region[0].size < memblock.rmo_size)
- memblock.rmo_size = memblock.memory.region[0].size;
+ if (memblock.memory.regions[0].size < memblock.rmo_size)
+ memblock.rmo_size = memblock.memory.regions[0].size;
memory_limit = memblock_end_of_DRAM();
/* And truncate any reserves above the limit also. */
for (i = 0; i < memblock.reserved.cnt; i++) {
- p = &memblock.reserved.region[i];
+ p = &memblock.reserved.regions[i];
if (p->base > memory_limit)
p->size = 0;
@@ -494,9 +492,9 @@ int __init memblock_is_reserved(u64 addr)
int i;
for (i = 0; i < memblock.reserved.cnt; i++) {
- u64 upper = memblock.reserved.region[i].base +
- memblock.reserved.region[i].size - 1;
- if ((addr >= memblock.reserved.region[i].base) && (addr <= upper))
+ u64 upper = memblock.reserved.regions[i].base +
+ memblock.reserved.regions[i].size - 1;
+ if ((addr >= memblock.reserved.regions[i].base) && (addr <= upper))
return 1;
}
return 0;
@@ -511,7 +509,7 @@ int memblock_is_region_reserved(u64 base, u64 size)
* Given a <base, len>, find which memory regions belong to this range.
* Adjust the request and return a contiguous chunk.
*/
-int memblock_find(struct memblock_property *res)
+int memblock_find(struct memblock_region *res)
{
int i;
u64 rstart, rend;
@@ -520,8 +518,8 @@ int memblock_find(struct memblock_property *res)
rend = rstart + res->size - 1;
for (i = 0; i < memblock.memory.cnt; i++) {
- u64 start = memblock.memory.region[i].base;
- u64 end = start + memblock.memory.region[i].size - 1;
+ u64 start = memblock.memory.regions[i].base;
+ u64 end = start + memblock.memory.regions[i].size - 1;
if (start > rend)
return -1;
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 03/43] memblock: No reason to include asm/memblock.h late
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 86e7daf..4b69313 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -16,6 +16,8 @@
#include <linux/init.h>
#include <linux/mm.h>
+#include <asm/memblock.h>
+
#define MAX_MEMBLOCK_REGIONS 128
struct memblock_region {
@@ -82,8 +84,6 @@ memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
memblock_size_pages(type, region_nr);
}
-#include <asm/memblock.h>
-
#endif /* __KERNEL__ */
#endif /* _LINUX_MEMBLOCK_H */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 03/43] memblock: No reason to include asm/memblock.h late
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 86e7daf..4b69313 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -16,6 +16,8 @@
#include <linux/init.h>
#include <linux/mm.h>
+#include <asm/memblock.h>
+
#define MAX_MEMBLOCK_REGIONS 128
struct memblock_region {
@@ -82,8 +84,6 @@ memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
memblock_size_pages(type, region_nr);
}
-#include <asm/memblock.h>
-
#endif /* __KERNEL__ */
#endif /* _LINUX_MEMBLOCK_H */
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 04/43] memblock: Implement memblock_is_memory and memblock_is_region_memory
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
To make it fast, we steal ARM's binary search for memblock_is_memory()
and we use that to also the replace existing implementation of
memblock_is_reserved().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 ++
mm/memblock.c | 42 ++++++++++++++++++++++++++++++++++--------
2 files changed, 36 insertions(+), 8 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 4b69313..47bceb1 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -56,6 +56,8 @@ extern u64 __init __memblock_alloc_base(u64 size,
extern u64 __init memblock_phys_mem_size(void);
extern u64 memblock_end_of_DRAM(void);
extern void __init memblock_enforce_memory_limit(u64 memory_limit);
+extern int memblock_is_memory(u64 addr);
+extern int memblock_is_region_memory(u64 base, u64 size);
extern int __init memblock_is_reserved(u64 addr);
extern int memblock_is_region_reserved(u64 base, u64 size);
extern int memblock_find(struct memblock_region *res);
diff --git a/mm/memblock.c b/mm/memblock.c
index 6f407cc..aa88c62 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -487,17 +487,43 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
}
}
+static int memblock_search(struct memblock_type *type, u64 addr)
+{
+ unsigned int left = 0, right = type->cnt;
+
+ do {
+ unsigned int mid = (right + left) / 2;
+
+ if (addr < type->regions[mid].base)
+ right = mid;
+ else if (addr >= (type->regions[mid].base +
+ type->regions[mid].size))
+ left = mid + 1;
+ else
+ return mid;
+ } while (left < right);
+ return -1;
+}
+
int __init memblock_is_reserved(u64 addr)
{
- int i;
+ return memblock_search(&memblock.reserved, addr) != -1;
+}
- for (i = 0; i < memblock.reserved.cnt; i++) {
- u64 upper = memblock.reserved.regions[i].base +
- memblock.reserved.regions[i].size - 1;
- if ((addr >= memblock.reserved.regions[i].base) && (addr <= upper))
- return 1;
- }
- return 0;
+int memblock_is_memory(u64 addr)
+{
+ return memblock_search(&memblock.memory, addr) != -1;
+}
+
+int memblock_is_region_memory(u64 base, u64 size)
+{
+ int idx = memblock_search(&memblock.reserved, base);
+
+ if (idx == -1)
+ return 0;
+ return memblock.reserved.regions[idx].base <= base &&
+ (memblock.reserved.regions[idx].base +
+ memblock.reserved.regions[idx].size) >= (base + size);
}
int memblock_is_region_reserved(u64 base, u64 size)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 04/43] memblock: Implement memblock_is_memory and memblock_is_region_memory
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
To make it fast, we steal ARM's binary search for memblock_is_memory()
and we use that to also the replace existing implementation of
memblock_is_reserved().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 ++
mm/memblock.c | 42 ++++++++++++++++++++++++++++++++++--------
2 files changed, 36 insertions(+), 8 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 4b69313..47bceb1 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -56,6 +56,8 @@ extern u64 __init __memblock_alloc_base(u64 size,
extern u64 __init memblock_phys_mem_size(void);
extern u64 memblock_end_of_DRAM(void);
extern void __init memblock_enforce_memory_limit(u64 memory_limit);
+extern int memblock_is_memory(u64 addr);
+extern int memblock_is_region_memory(u64 base, u64 size);
extern int __init memblock_is_reserved(u64 addr);
extern int memblock_is_region_reserved(u64 base, u64 size);
extern int memblock_find(struct memblock_region *res);
diff --git a/mm/memblock.c b/mm/memblock.c
index 6f407cc..aa88c62 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -487,17 +487,43 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
}
}
+static int memblock_search(struct memblock_type *type, u64 addr)
+{
+ unsigned int left = 0, right = type->cnt;
+
+ do {
+ unsigned int mid = (right + left) / 2;
+
+ if (addr < type->regions[mid].base)
+ right = mid;
+ else if (addr >= (type->regions[mid].base +
+ type->regions[mid].size))
+ left = mid + 1;
+ else
+ return mid;
+ } while (left < right);
+ return -1;
+}
+
int __init memblock_is_reserved(u64 addr)
{
- int i;
+ return memblock_search(&memblock.reserved, addr) != -1;
+}
- for (i = 0; i < memblock.reserved.cnt; i++) {
- u64 upper = memblock.reserved.regions[i].base +
- memblock.reserved.regions[i].size - 1;
- if ((addr >= memblock.reserved.regions[i].base) && (addr <= upper))
- return 1;
- }
- return 0;
+int memblock_is_memory(u64 addr)
+{
+ return memblock_search(&memblock.memory, addr) != -1;
+}
+
+int memblock_is_region_memory(u64 base, u64 size)
+{
+ int idx = memblock_search(&memblock.reserved, base);
+
+ if (idx == -1)
+ return 0;
+ return memblock.reserved.regions[idx].base <= base &&
+ (memblock.reserved.regions[idx].base +
+ memblock.reserved.regions[idx].size) >= (base + size);
}
int memblock_is_region_reserved(u64 base, u64 size)
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 05/43] memblock/arm: pfn_valid uses memblock_is_memory()
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
The implementation is pretty much similar. There is a -small- added
overhead by having another function call and the address shift.
If that becomes a concern, I suppose we could actually have memblock
itself expose a memblock_pfn_valid() which then ARM can use directly
with an appropriate #define...
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/mm/init.c | 15 +--------------
1 files changed, 1 insertions(+), 14 deletions(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index d1496e6..e739223 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -237,20 +237,7 @@ static void __init arm_bootmem_free(struct meminfo *mi, unsigned long min,
#ifndef CONFIG_SPARSEMEM
int pfn_valid(unsigned long pfn)
{
- struct memblock_type *mem = &memblock.memory;
- unsigned int left = 0, right = mem->cnt;
-
- do {
- unsigned int mid = (right + left) / 2;
-
- if (pfn < memblock_start_pfn(mem, mid))
- right = mid;
- else if (pfn >= memblock_end_pfn(mem, mid))
- left = mid + 1;
- else
- return 1;
- } while (left < right);
- return 0;
+ return memblock_is_memory(pfn << PAGE_SHIFT);
}
EXPORT_SYMBOL(pfn_valid);
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 05/43] memblock/arm: pfn_valid uses memblock_is_memory()
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
The implementation is pretty much similar. There is a -small- added
overhead by having another function call and the address shift.
If that becomes a concern, I suppose we could actually have memblock
itself expose a memblock_pfn_valid() which then ARM can use directly
with an appropriate #define...
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/mm/init.c | 15 +--------------
1 files changed, 1 insertions(+), 14 deletions(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index d1496e6..e739223 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -237,20 +237,7 @@ static void __init arm_bootmem_free(struct meminfo *mi, unsigned long min,
#ifndef CONFIG_SPARSEMEM
int pfn_valid(unsigned long pfn)
{
- struct memblock_type *mem = &memblock.memory;
- unsigned int left = 0, right = mem->cnt;
-
- do {
- unsigned int mid = (right + left) / 2;
-
- if (pfn < memblock_start_pfn(mem, mid))
- right = mid;
- else if (pfn >= memblock_end_pfn(mem, mid))
- left = mid + 1;
- else
- return 1;
- } while (left < right);
- return 0;
+ return memblock_is_memory(pfn << PAGE_SHIFT);
}
EXPORT_SYMBOL(pfn_valid);
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 06/43] memblock/arm: Use memblock_region_is_memory() for omap fb
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Instead of the deprecated memblock_find()
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/plat-omap/fb.c | 6 +-----
drivers/video/omap2/vram.c | 8 ++------
2 files changed, 3 insertions(+), 11 deletions(-)
diff --git a/arch/arm/plat-omap/fb.c b/arch/arm/plat-omap/fb.c
index 05bf228..441af2b 100644
--- a/arch/arm/plat-omap/fb.c
+++ b/arch/arm/plat-omap/fb.c
@@ -173,11 +173,7 @@ static int check_fbmem_region(int region_idx, struct omapfb_mem_region *rg,
static int valid_sdram(unsigned long addr, unsigned long size)
{
- struct memblock_region res;
-
- res.base = addr;
- res.size = size;
- return !memblock_find(&res) && res.base == addr && res.size == size;
+ return memblock_region_is_memory(addr, size);
}
static int reserve_sdram(unsigned long addr, unsigned long size)
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index 0f2532b..34514a8 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -554,12 +554,8 @@ void __init omap_vram_reserve_sdram_memblock(void)
size = PAGE_ALIGN(size);
if (paddr) {
- struct memblock_region res;
-
- res.base = paddr;
- res.size = size;
- if ((paddr & ~PAGE_MASK) || memblock_find(&res) ||
- res.base != paddr || res.size != size) {
+ if ((paddr & ~PAGE_MASK) ||
+ !memblock_region_is_memory(paddr, size)) {
pr_err("Illegal SDRAM region for VRAM\n");
return;
}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 06/43] memblock/arm: Use memblock_region_is_memory() for omap fb
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Instead of the deprecated memblock_find()
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/plat-omap/fb.c | 6 +-----
drivers/video/omap2/vram.c | 8 ++------
2 files changed, 3 insertions(+), 11 deletions(-)
diff --git a/arch/arm/plat-omap/fb.c b/arch/arm/plat-omap/fb.c
index 05bf228..441af2b 100644
--- a/arch/arm/plat-omap/fb.c
+++ b/arch/arm/plat-omap/fb.c
@@ -173,11 +173,7 @@ static int check_fbmem_region(int region_idx, struct omapfb_mem_region *rg,
static int valid_sdram(unsigned long addr, unsigned long size)
{
- struct memblock_region res;
-
- res.base = addr;
- res.size = size;
- return !memblock_find(&res) && res.base == addr && res.size == size;
+ return memblock_region_is_memory(addr, size);
}
static int reserve_sdram(unsigned long addr, unsigned long size)
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
index 0f2532b..34514a8 100644
--- a/drivers/video/omap2/vram.c
+++ b/drivers/video/omap2/vram.c
@@ -554,12 +554,8 @@ void __init omap_vram_reserve_sdram_memblock(void)
size = PAGE_ALIGN(size);
if (paddr) {
- struct memblock_region res;
-
- res.base = paddr;
- res.size = size;
- if ((paddr & ~PAGE_MASK) || memblock_find(&res) ||
- res.base != paddr || res.size != size) {
+ if ((paddr & ~PAGE_MASK) ||
+ !memblock_region_is_memory(paddr, size)) {
pr_err("Illegal SDRAM region for VRAM\n");
return;
}
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 07/43] memblock: Introduce for_each_memblock() and new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Walk memblock's using for_each_memblock() and use memblock_region_base/end_pfn() for
getting to PFNs.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 52 insertions(+), 0 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 47bceb1..c914112 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -64,6 +64,7 @@ extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
+/* Obsolete accessors */
static inline u64
memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
{
@@ -86,6 +87,57 @@ memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
memblock_size_pages(type, region_nr);
}
+/*
+ * pfn conversion functions
+ *
+ * While the memory MEMBLOCKs should always be page aligned, the reserved
+ * MEMBLOCKs may not be. This accessor attempt to provide a very clear
+ * idea of what they return for such non aligned MEMBLOCKs.
+ */
+
+/**
+ * memblock_region_base_pfn - Return the lowest pfn intersecting with the region
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_base_pfn(const struct memblock_region *reg)
+{
+ return reg->base >> PAGE_SHIFT;
+}
+
+/**
+ * memblock_region_last_pfn - Return the highest pfn intersecting with the region
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_last_pfn(const struct memblock_region *reg)
+{
+ return (reg->base + reg->size - 1) >> PAGE_SHIFT;
+}
+
+/**
+ * memblock_region_end_pfn - Return the pfn of the first page following the region
+ * but not intersecting it
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_end_pfn(const struct memblock_region *reg)
+{
+ return memblock_region_last_pfn(reg) + 1;
+}
+
+/**
+ * memblock_region_pages - Return the number of pages covering a region
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_pages(const struct memblock_region *reg)
+{
+ return memblock_region_end_pfn(reg) - memblock_region_end_pfn(reg);
+}
+
+#define for_each_memblock(memblock_type, region) \
+ for (region = memblock.memblock_type.regions; \
+ region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \
+ region++)
+
+
#endif /* __KERNEL__ */
#endif /* _LINUX_MEMBLOCK_H */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 07/43] memblock: Introduce for_each_memblock() and new accessors
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Walk memblock's using for_each_memblock() and use memblock_region_base/end_pfn() for
getting to PFNs.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 52 insertions(+), 0 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 47bceb1..c914112 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -64,6 +64,7 @@ extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
+/* Obsolete accessors */
static inline u64
memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
{
@@ -86,6 +87,57 @@ memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
memblock_size_pages(type, region_nr);
}
+/*
+ * pfn conversion functions
+ *
+ * While the memory MEMBLOCKs should always be page aligned, the reserved
+ * MEMBLOCKs may not be. This accessor attempt to provide a very clear
+ * idea of what they return for such non aligned MEMBLOCKs.
+ */
+
+/**
+ * memblock_region_base_pfn - Return the lowest pfn intersecting with the region
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_base_pfn(const struct memblock_region *reg)
+{
+ return reg->base >> PAGE_SHIFT;
+}
+
+/**
+ * memblock_region_last_pfn - Return the highest pfn intersecting with the region
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_last_pfn(const struct memblock_region *reg)
+{
+ return (reg->base + reg->size - 1) >> PAGE_SHIFT;
+}
+
+/**
+ * memblock_region_end_pfn - Return the pfn of the first page following the region
+ * but not intersecting it
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_end_pfn(const struct memblock_region *reg)
+{
+ return memblock_region_last_pfn(reg) + 1;
+}
+
+/**
+ * memblock_region_pages - Return the number of pages covering a region
+ * @reg: memblock_region structure
+ */
+static inline unsigned long memblock_region_pages(const struct memblock_region *reg)
+{
+ return memblock_region_end_pfn(reg) - memblock_region_end_pfn(reg);
+}
+
+#define for_each_memblock(memblock_type, region) \
+ for (region = memblock.memblock_type.regions; \
+ region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \
+ region++)
+
+
#endif /* __KERNEL__ */
#endif /* _LINUX_MEMBLOCK_H */
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 08/43] memblock/microblaze: Use new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, Michal Simek
CC: Michal Simek <monstr@monstr.eu>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/microblaze/mm/init.c | 20 +++++++++-----------
1 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index afd6494..32a702b 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -70,16 +70,16 @@ static void __init paging_init(void)
void __init setup_memory(void)
{
- int i;
unsigned long map_size;
+ struct memblock_region *reg;
+
#ifndef CONFIG_MMU
u32 kernel_align_start, kernel_align_size;
/* Find main memory where is the kernel */
- for (i = 0; i < memblock.memory.cnt; i++) {
- memory_start = (u32) memblock.memory.regions[i].base;
- memory_end = (u32) memblock.memory.regions[i].base
- + (u32) memblock.memory.region[i].size;
+ for_each_memblock(memory, reg) {
+ memory_start = (u32)reg->base;
+ memory_end = (u32) reg->base + reg->size;
if ((memory_start <= (u32)_text) &&
((u32)_text <= memory_end)) {
memory_size = memory_end - memory_start;
@@ -147,12 +147,10 @@ void __init setup_memory(void)
free_bootmem(memory_start, memory_size);
/* reserve allocate blocks */
- for (i = 0; i < memblock.reserved.cnt; i++) {
- pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
- (u32) memblock.reserved.region[i].base,
- (u32) memblock_size_bytes(&memblock.reserved, i));
- reserve_bootmem(memblock.reserved.region[i].base,
- memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
+ for_each_memblock(reserved, reg) {
+ pr_debug("reserved - 0x%08x-0x%08x\n",
+ (u32) reg->base, (u32) reg->size);
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
}
#ifdef CONFIG_MMU
init_bootmem_done = 1;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, Michal Simek
CC: Michal Simek <monstr@monstr.eu>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/microblaze/mm/init.c | 20 +++++++++-----------
1 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index afd6494..32a702b 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -70,16 +70,16 @@ static void __init paging_init(void)
void __init setup_memory(void)
{
- int i;
unsigned long map_size;
+ struct memblock_region *reg;
+
#ifndef CONFIG_MMU
u32 kernel_align_start, kernel_align_size;
/* Find main memory where is the kernel */
- for (i = 0; i < memblock.memory.cnt; i++) {
- memory_start = (u32) memblock.memory.regions[i].base;
- memory_end = (u32) memblock.memory.regions[i].base
- + (u32) memblock.memory.region[i].size;
+ for_each_memblock(memory, reg) {
+ memory_start = (u32)reg->base;
+ memory_end = (u32) reg->base + reg->size;
if ((memory_start <= (u32)_text) &&
((u32)_text <= memory_end)) {
memory_size = memory_end - memory_start;
@@ -147,12 +147,10 @@ void __init setup_memory(void)
free_bootmem(memory_start, memory_size);
/* reserve allocate blocks */
- for (i = 0; i < memblock.reserved.cnt; i++) {
- pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
- (u32) memblock.reserved.region[i].base,
- (u32) memblock_size_bytes(&memblock.reserved, i));
- reserve_bootmem(memblock.reserved.region[i].base,
- memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
+ for_each_memblock(reserved, reg) {
+ pr_debug("reserved - 0x%08x-0x%08x\n",
+ (u32) reg->base, (u32) reg->size);
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
}
#ifdef CONFIG_MMU
init_bootmem_done = 1;
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 8:52 ` Michal Simek
-1 siblings, 0 replies; 113+ messages in thread
From: Michal Simek @ 2010-08-06 8:52 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: linux-kernel, linux-mm, torvalds
Benjamin Herrenschmidt wrote:
> CC: Michal Simek <monstr@monstr.eu>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This patch remove bug which I reported but there is another place which
needs to be changed.
I am not sure if my patch is correct but at least point you on places
which is causing compilation errors.
I tested your memblock branch with this fix and microblaze can boot.
Thanks,
Michal
CC arch/microblaze/mm/init.o
arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c: In function 'mmu_init':
arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
member named 'region'
make[1]: *** [arch/microblaze/mm/init.o] Error 1
make: *** [arch/microblaze/mm] Error 2
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 32a702b..a9d7b9b 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
if (maxmem && memory_size > maxmem) {
memory_size = maxmem;
memory_end = memory_start + memory_size;
- memblock.memory.region[0].size = memory_size;
+ memblock.memory.regions[0].size = memory_size;
}
}
}
@@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
machine_restart(NULL);
}
- if ((u32) memblock.memory.region[0].size < 0x1000000) {
+ if ((u32) memblock.memory.regions[0].size < 0x1000000) {
printk(KERN_EMERG "Memory must be greater than 16MB\n");
machine_restart(NULL);
}
/* Find main memory where the kernel is */
- memory_start = (u32) memblock.memory.region[0].base;
- memory_end = (u32) memblock.memory.region[0].base +
- (u32) memblock.memory.region[0].size;
+ memory_start = (u32) memblock.memory.regions[0].base;
+ memory_end = (u32) memblock.memory.regions[0].base +
+ (u32) memblock.memory.regions[0].size;
memory_size = memory_end - memory_start;
mm_cmdline_setup(); /* FIXME parse args from command line - not
used */
> ---
> arch/microblaze/mm/init.c | 20 +++++++++-----------
> 1 files changed, 9 insertions(+), 11 deletions(-)
>
> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> index afd6494..32a702b 100644
> --- a/arch/microblaze/mm/init.c
> +++ b/arch/microblaze/mm/init.c
> @@ -70,16 +70,16 @@ static void __init paging_init(void)
>
> void __init setup_memory(void)
> {
> - int i;
> unsigned long map_size;
> + struct memblock_region *reg;
> +
> #ifndef CONFIG_MMU
> u32 kernel_align_start, kernel_align_size;
>
> /* Find main memory where is the kernel */
> - for (i = 0; i < memblock.memory.cnt; i++) {
> - memory_start = (u32) memblock.memory.regions[i].base;
> - memory_end = (u32) memblock.memory.regions[i].base
> - + (u32) memblock.memory.region[i].size;
> + for_each_memblock(memory, reg) {
> + memory_start = (u32)reg->base;
> + memory_end = (u32) reg->base + reg->size;
> if ((memory_start <= (u32)_text) &&
> ((u32)_text <= memory_end)) {
> memory_size = memory_end - memory_start;
> @@ -147,12 +147,10 @@ void __init setup_memory(void)
> free_bootmem(memory_start, memory_size);
>
> /* reserve allocate blocks */
> - for (i = 0; i < memblock.reserved.cnt; i++) {
> - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
> - (u32) memblock.reserved.region[i].base,
> - (u32) memblock_size_bytes(&memblock.reserved, i));
> - reserve_bootmem(memblock.reserved.region[i].base,
> - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
> + for_each_memblock(reserved, reg) {
> + pr_debug("reserved - 0x%08x-0x%08x\n",
> + (u32) reg->base, (u32) reg->size);
> + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
> }
> #ifdef CONFIG_MMU
> init_bootmem_done = 1;
--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
^ permalink raw reply related [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-08-06 8:52 ` Michal Simek
0 siblings, 0 replies; 113+ messages in thread
From: Michal Simek @ 2010-08-06 8:52 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: linux-kernel, linux-mm, torvalds
Benjamin Herrenschmidt wrote:
> CC: Michal Simek <monstr@monstr.eu>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This patch remove bug which I reported but there is another place which
needs to be changed.
I am not sure if my patch is correct but at least point you on places
which is causing compilation errors.
I tested your memblock branch with this fix and microblaze can boot.
Thanks,
Michal
CC arch/microblaze/mm/init.o
arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c: In function 'mmu_init':
arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
member named 'region'
arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
member named 'region'
make[1]: *** [arch/microblaze/mm/init.o] Error 1
make: *** [arch/microblaze/mm] Error 2
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 32a702b..a9d7b9b 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
if (maxmem && memory_size > maxmem) {
memory_size = maxmem;
memory_end = memory_start + memory_size;
- memblock.memory.region[0].size = memory_size;
+ memblock.memory.regions[0].size = memory_size;
}
}
}
@@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
machine_restart(NULL);
}
- if ((u32) memblock.memory.region[0].size < 0x1000000) {
+ if ((u32) memblock.memory.regions[0].size < 0x1000000) {
printk(KERN_EMERG "Memory must be greater than 16MB\n");
machine_restart(NULL);
}
/* Find main memory where the kernel is */
- memory_start = (u32) memblock.memory.region[0].base;
- memory_end = (u32) memblock.memory.region[0].base +
- (u32) memblock.memory.region[0].size;
+ memory_start = (u32) memblock.memory.regions[0].base;
+ memory_end = (u32) memblock.memory.regions[0].base +
+ (u32) memblock.memory.regions[0].size;
memory_size = memory_end - memory_start;
mm_cmdline_setup(); /* FIXME parse args from command line - not
used */
> ---
> arch/microblaze/mm/init.c | 20 +++++++++-----------
> 1 files changed, 9 insertions(+), 11 deletions(-)
>
> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> index afd6494..32a702b 100644
> --- a/arch/microblaze/mm/init.c
> +++ b/arch/microblaze/mm/init.c
> @@ -70,16 +70,16 @@ static void __init paging_init(void)
>
> void __init setup_memory(void)
> {
> - int i;
> unsigned long map_size;
> + struct memblock_region *reg;
> +
> #ifndef CONFIG_MMU
> u32 kernel_align_start, kernel_align_size;
>
> /* Find main memory where is the kernel */
> - for (i = 0; i < memblock.memory.cnt; i++) {
> - memory_start = (u32) memblock.memory.regions[i].base;
> - memory_end = (u32) memblock.memory.regions[i].base
> - + (u32) memblock.memory.region[i].size;
> + for_each_memblock(memory, reg) {
> + memory_start = (u32)reg->base;
> + memory_end = (u32) reg->base + reg->size;
> if ((memory_start <= (u32)_text) &&
> ((u32)_text <= memory_end)) {
> memory_size = memory_end - memory_start;
> @@ -147,12 +147,10 @@ void __init setup_memory(void)
> free_bootmem(memory_start, memory_size);
>
> /* reserve allocate blocks */
> - for (i = 0; i < memblock.reserved.cnt; i++) {
> - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
> - (u32) memblock.reserved.region[i].base,
> - (u32) memblock_size_bytes(&memblock.reserved, i));
> - reserve_bootmem(memblock.reserved.region[i].base,
> - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
> + for_each_memblock(reserved, reg) {
> + pr_debug("reserved - 0x%08x-0x%08x\n",
> + (u32) reg->base, (u32) reg->size);
> + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
> }
> #ifdef CONFIG_MMU
> init_bootmem_done = 1;
--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-08-06 8:52 ` Michal Simek
@ 2010-08-06 22:50 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 22:50 UTC (permalink / raw)
To: monstr; +Cc: linux-kernel, linux-mm, torvalds
On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> Benjamin Herrenschmidt wrote:
> > CC: Michal Simek <monstr@monstr.eu>
> > Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>
> This patch remove bug which I reported but there is another place which
> needs to be changed.
>
> I am not sure if my patch is correct but at least point you on places
> which is causing compilation errors.
>
> I tested your memblock branch with this fix and microblaze can boot.
Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
Cheers,
Ben.
> Thanks,
> Michal
>
> CC arch/microblaze/mm/init.o
> arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
> arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c: In function 'mmu_init':
> arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
> member named 'region'
> make[1]: *** [arch/microblaze/mm/init.o] Error 1
> make: *** [arch/microblaze/mm] Error 2
>
>
> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> index 32a702b..a9d7b9b 100644
> --- a/arch/microblaze/mm/init.c
> +++ b/arch/microblaze/mm/init.c
> @@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
> if (maxmem && memory_size > maxmem) {
> memory_size = maxmem;
> memory_end = memory_start + memory_size;
> - memblock.memory.region[0].size = memory_size;
> + memblock.memory.regions[0].size = memory_size;
> }
> }
> }
> @@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
> machine_restart(NULL);
> }
>
> - if ((u32) memblock.memory.region[0].size < 0x1000000) {
> + if ((u32) memblock.memory.regions[0].size < 0x1000000) {
> printk(KERN_EMERG "Memory must be greater than 16MB\n");
> machine_restart(NULL);
> }
> /* Find main memory where the kernel is */
> - memory_start = (u32) memblock.memory.region[0].base;
> - memory_end = (u32) memblock.memory.region[0].base +
> - (u32) memblock.memory.region[0].size;
> + memory_start = (u32) memblock.memory.regions[0].base;
> + memory_end = (u32) memblock.memory.regions[0].base +
> + (u32) memblock.memory.regions[0].size;
> memory_size = memory_end - memory_start;
>
> mm_cmdline_setup(); /* FIXME parse args from command line - not
> used */
>
>
>
> > ---
> > arch/microblaze/mm/init.c | 20 +++++++++-----------
> > 1 files changed, 9 insertions(+), 11 deletions(-)
> >
> > diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> > index afd6494..32a702b 100644
> > --- a/arch/microblaze/mm/init.c
> > +++ b/arch/microblaze/mm/init.c
> > @@ -70,16 +70,16 @@ static void __init paging_init(void)
> >
> > void __init setup_memory(void)
> > {
> > - int i;
> > unsigned long map_size;
> > + struct memblock_region *reg;
> > +
> > #ifndef CONFIG_MMU
> > u32 kernel_align_start, kernel_align_size;
> >
> > /* Find main memory where is the kernel */
> > - for (i = 0; i < memblock.memory.cnt; i++) {
> > - memory_start = (u32) memblock.memory.regions[i].base;
> > - memory_end = (u32) memblock.memory.regions[i].base
> > - + (u32) memblock.memory.region[i].size;
> > + for_each_memblock(memory, reg) {
> > + memory_start = (u32)reg->base;
> > + memory_end = (u32) reg->base + reg->size;
> > if ((memory_start <= (u32)_text) &&
> > ((u32)_text <= memory_end)) {
> > memory_size = memory_end - memory_start;
> > @@ -147,12 +147,10 @@ void __init setup_memory(void)
> > free_bootmem(memory_start, memory_size);
> >
> > /* reserve allocate blocks */
> > - for (i = 0; i < memblock.reserved.cnt; i++) {
> > - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
> > - (u32) memblock.reserved.region[i].base,
> > - (u32) memblock_size_bytes(&memblock.reserved, i));
> > - reserve_bootmem(memblock.reserved.region[i].base,
> > - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
> > + for_each_memblock(reserved, reg) {
> > + pr_debug("reserved - 0x%08x-0x%08x\n",
> > + (u32) reg->base, (u32) reg->size);
> > + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
> > }
> > #ifdef CONFIG_MMU
> > init_bootmem_done = 1;
>
>
^ permalink raw reply [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-08-06 22:50 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 22:50 UTC (permalink / raw)
To: monstr; +Cc: linux-kernel, linux-mm, torvalds
On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> Benjamin Herrenschmidt wrote:
> > CC: Michal Simek <monstr@monstr.eu>
> > Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>
> This patch remove bug which I reported but there is another place which
> needs to be changed.
>
> I am not sure if my patch is correct but at least point you on places
> which is causing compilation errors.
>
> I tested your memblock branch with this fix and microblaze can boot.
Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
Cheers,
Ben.
> Thanks,
> Michal
>
> CC arch/microblaze/mm/init.o
> arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
> arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c: In function 'mmu_init':
> arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
> member named 'region'
> arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
> member named 'region'
> make[1]: *** [arch/microblaze/mm/init.o] Error 1
> make: *** [arch/microblaze/mm] Error 2
>
>
> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> index 32a702b..a9d7b9b 100644
> --- a/arch/microblaze/mm/init.c
> +++ b/arch/microblaze/mm/init.c
> @@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
> if (maxmem && memory_size > maxmem) {
> memory_size = maxmem;
> memory_end = memory_start + memory_size;
> - memblock.memory.region[0].size = memory_size;
> + memblock.memory.regions[0].size = memory_size;
> }
> }
> }
> @@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
> machine_restart(NULL);
> }
>
> - if ((u32) memblock.memory.region[0].size < 0x1000000) {
> + if ((u32) memblock.memory.regions[0].size < 0x1000000) {
> printk(KERN_EMERG "Memory must be greater than 16MB\n");
> machine_restart(NULL);
> }
> /* Find main memory where the kernel is */
> - memory_start = (u32) memblock.memory.region[0].base;
> - memory_end = (u32) memblock.memory.region[0].base +
> - (u32) memblock.memory.region[0].size;
> + memory_start = (u32) memblock.memory.regions[0].base;
> + memory_end = (u32) memblock.memory.regions[0].base +
> + (u32) memblock.memory.regions[0].size;
> memory_size = memory_end - memory_start;
>
> mm_cmdline_setup(); /* FIXME parse args from command line - not
> used */
>
>
>
> > ---
> > arch/microblaze/mm/init.c | 20 +++++++++-----------
> > 1 files changed, 9 insertions(+), 11 deletions(-)
> >
> > diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> > index afd6494..32a702b 100644
> > --- a/arch/microblaze/mm/init.c
> > +++ b/arch/microblaze/mm/init.c
> > @@ -70,16 +70,16 @@ static void __init paging_init(void)
> >
> > void __init setup_memory(void)
> > {
> > - int i;
> > unsigned long map_size;
> > + struct memblock_region *reg;
> > +
> > #ifndef CONFIG_MMU
> > u32 kernel_align_start, kernel_align_size;
> >
> > /* Find main memory where is the kernel */
> > - for (i = 0; i < memblock.memory.cnt; i++) {
> > - memory_start = (u32) memblock.memory.regions[i].base;
> > - memory_end = (u32) memblock.memory.regions[i].base
> > - + (u32) memblock.memory.region[i].size;
> > + for_each_memblock(memory, reg) {
> > + memory_start = (u32)reg->base;
> > + memory_end = (u32) reg->base + reg->size;
> > if ((memory_start <= (u32)_text) &&
> > ((u32)_text <= memory_end)) {
> > memory_size = memory_end - memory_start;
> > @@ -147,12 +147,10 @@ void __init setup_memory(void)
> > free_bootmem(memory_start, memory_size);
> >
> > /* reserve allocate blocks */
> > - for (i = 0; i < memblock.reserved.cnt; i++) {
> > - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
> > - (u32) memblock.reserved.region[i].base,
> > - (u32) memblock_size_bytes(&memblock.reserved, i));
> > - reserve_bootmem(memblock.reserved.region[i].base,
> > - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
> > + for_each_memblock(reserved, reg) {
> > + pr_debug("reserved - 0x%08x-0x%08x\n",
> > + (u32) reg->base, (u32) reg->size);
> > + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
> > }
> > #ifdef CONFIG_MMU
> > init_bootmem_done = 1;
>
>
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-08-06 22:50 ` Benjamin Herrenschmidt
@ 2010-09-09 10:57 ` Michal Simek
-1 siblings, 0 replies; 113+ messages in thread
From: Michal Simek @ 2010-09-09 10:57 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: linux-kernel, linux-mm, linux-next, Stephen Rothwell, Ingo Molnar
Benjamin Herrenschmidt wrote:
> On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
>> Benjamin Herrenschmidt wrote:
>>> CC: Michal Simek <monstr@monstr.eu>
>>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>> This patch remove bug which I reported but there is another place which
>> needs to be changed.
>>
>> I am not sure if my patch is correct but at least point you on places
>> which is causing compilation errors.
>>
>> I tested your memblock branch with this fix and microblaze can boot.
>
> Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
>
> Cheers,
> Ben.
I don't know why but this unfixed old patch is in linux-next today. Not
sure which tree contains it.
Thanks,
Michal
>>
>> CC arch/microblaze/mm/init.o
>> arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
>> arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c: In function 'mmu_init':
>> arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
>> member named 'region'
>> make[1]: *** [arch/microblaze/mm/init.o] Error 1
>> make: *** [arch/microblaze/mm] Error 2
>>
>>
>> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
>> index 32a702b..a9d7b9b 100644
>> --- a/arch/microblaze/mm/init.c
>> +++ b/arch/microblaze/mm/init.c
>> @@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
>> if (maxmem && memory_size > maxmem) {
>> memory_size = maxmem;
>> memory_end = memory_start + memory_size;
>> - memblock.memory.region[0].size = memory_size;
>> + memblock.memory.regions[0].size = memory_size;
>> }
>> }
>> }
>> @@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
>> machine_restart(NULL);
>> }
>>
>> - if ((u32) memblock.memory.region[0].size < 0x1000000) {
>> + if ((u32) memblock.memory.regions[0].size < 0x1000000) {
>> printk(KERN_EMERG "Memory must be greater than 16MB\n");
>> machine_restart(NULL);
>> }
>> /* Find main memory where the kernel is */
>> - memory_start = (u32) memblock.memory.region[0].base;
>> - memory_end = (u32) memblock.memory.region[0].base +
>> - (u32) memblock.memory.region[0].size;
>> + memory_start = (u32) memblock.memory.regions[0].base;
>> + memory_end = (u32) memblock.memory.regions[0].base +
>> + (u32) memblock.memory.regions[0].size;
>> memory_size = memory_end - memory_start;
>>
>> mm_cmdline_setup(); /* FIXME parse args from command line - not
>> used */
>>
>>
>>
>>> ---
>>> arch/microblaze/mm/init.c | 20 +++++++++-----------
>>> 1 files changed, 9 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
>>> index afd6494..32a702b 100644
>>> --- a/arch/microblaze/mm/init.c
>>> +++ b/arch/microblaze/mm/init.c
>>> @@ -70,16 +70,16 @@ static void __init paging_init(void)
>>>
>>> void __init setup_memory(void)
>>> {
>>> - int i;
>>> unsigned long map_size;
>>> + struct memblock_region *reg;
>>> +
>>> #ifndef CONFIG_MMU
>>> u32 kernel_align_start, kernel_align_size;
>>>
>>> /* Find main memory where is the kernel */
>>> - for (i = 0; i < memblock.memory.cnt; i++) {
>>> - memory_start = (u32) memblock.memory.regions[i].base;
>>> - memory_end = (u32) memblock.memory.regions[i].base
>>> - + (u32) memblock.memory.region[i].size;
>>> + for_each_memblock(memory, reg) {
>>> + memory_start = (u32)reg->base;
>>> + memory_end = (u32) reg->base + reg->size;
>>> if ((memory_start <= (u32)_text) &&
>>> ((u32)_text <= memory_end)) {
>>> memory_size = memory_end - memory_start;
>>> @@ -147,12 +147,10 @@ void __init setup_memory(void)
>>> free_bootmem(memory_start, memory_size);
>>>
>>> /* reserve allocate blocks */
>>> - for (i = 0; i < memblock.reserved.cnt; i++) {
>>> - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
>>> - (u32) memblock.reserved.region[i].base,
>>> - (u32) memblock_size_bytes(&memblock.reserved, i));
>>> - reserve_bootmem(memblock.reserved.region[i].base,
>>> - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
>>> + for_each_memblock(reserved, reg) {
>>> + pr_debug("reserved - 0x%08x-0x%08x\n",
>>> + (u32) reg->base, (u32) reg->size);
>>> + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
>>> }
>>> #ifdef CONFIG_MMU
>>> init_bootmem_done = 1;
>>
>
>
--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
^ permalink raw reply [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-09-09 10:57 ` Michal Simek
0 siblings, 0 replies; 113+ messages in thread
From: Michal Simek @ 2010-09-09 10:57 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: linux-kernel, linux-mm, linux-next, Stephen Rothwell, Ingo Molnar
Benjamin Herrenschmidt wrote:
> On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
>> Benjamin Herrenschmidt wrote:
>>> CC: Michal Simek <monstr@monstr.eu>
>>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>> This patch remove bug which I reported but there is another place which
>> needs to be changed.
>>
>> I am not sure if my patch is correct but at least point you on places
>> which is causing compilation errors.
>>
>> I tested your memblock branch with this fix and microblaze can boot.
>
> Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
>
> Cheers,
> Ben.
I don't know why but this unfixed old patch is in linux-next today. Not
sure which tree contains it.
Thanks,
Michal
>>
>> CC arch/microblaze/mm/init.o
>> arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
>> arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c: In function 'mmu_init':
>> arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
>> member named 'region'
>> arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
>> member named 'region'
>> make[1]: *** [arch/microblaze/mm/init.o] Error 1
>> make: *** [arch/microblaze/mm] Error 2
>>
>>
>> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
>> index 32a702b..a9d7b9b 100644
>> --- a/arch/microblaze/mm/init.c
>> +++ b/arch/microblaze/mm/init.c
>> @@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
>> if (maxmem && memory_size > maxmem) {
>> memory_size = maxmem;
>> memory_end = memory_start + memory_size;
>> - memblock.memory.region[0].size = memory_size;
>> + memblock.memory.regions[0].size = memory_size;
>> }
>> }
>> }
>> @@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
>> machine_restart(NULL);
>> }
>>
>> - if ((u32) memblock.memory.region[0].size < 0x1000000) {
>> + if ((u32) memblock.memory.regions[0].size < 0x1000000) {
>> printk(KERN_EMERG "Memory must be greater than 16MB\n");
>> machine_restart(NULL);
>> }
>> /* Find main memory where the kernel is */
>> - memory_start = (u32) memblock.memory.region[0].base;
>> - memory_end = (u32) memblock.memory.region[0].base +
>> - (u32) memblock.memory.region[0].size;
>> + memory_start = (u32) memblock.memory.regions[0].base;
>> + memory_end = (u32) memblock.memory.regions[0].base +
>> + (u32) memblock.memory.regions[0].size;
>> memory_size = memory_end - memory_start;
>>
>> mm_cmdline_setup(); /* FIXME parse args from command line - not
>> used */
>>
>>
>>
>>> ---
>>> arch/microblaze/mm/init.c | 20 +++++++++-----------
>>> 1 files changed, 9 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
>>> index afd6494..32a702b 100644
>>> --- a/arch/microblaze/mm/init.c
>>> +++ b/arch/microblaze/mm/init.c
>>> @@ -70,16 +70,16 @@ static void __init paging_init(void)
>>>
>>> void __init setup_memory(void)
>>> {
>>> - int i;
>>> unsigned long map_size;
>>> + struct memblock_region *reg;
>>> +
>>> #ifndef CONFIG_MMU
>>> u32 kernel_align_start, kernel_align_size;
>>>
>>> /* Find main memory where is the kernel */
>>> - for (i = 0; i < memblock.memory.cnt; i++) {
>>> - memory_start = (u32) memblock.memory.regions[i].base;
>>> - memory_end = (u32) memblock.memory.regions[i].base
>>> - + (u32) memblock.memory.region[i].size;
>>> + for_each_memblock(memory, reg) {
>>> + memory_start = (u32)reg->base;
>>> + memory_end = (u32) reg->base + reg->size;
>>> if ((memory_start <= (u32)_text) &&
>>> ((u32)_text <= memory_end)) {
>>> memory_size = memory_end - memory_start;
>>> @@ -147,12 +147,10 @@ void __init setup_memory(void)
>>> free_bootmem(memory_start, memory_size);
>>>
>>> /* reserve allocate blocks */
>>> - for (i = 0; i < memblock.reserved.cnt; i++) {
>>> - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
>>> - (u32) memblock.reserved.region[i].base,
>>> - (u32) memblock_size_bytes(&memblock.reserved, i));
>>> - reserve_bootmem(memblock.reserved.region[i].base,
>>> - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
>>> + for_each_memblock(reserved, reg) {
>>> + pr_debug("reserved - 0x%08x-0x%08x\n",
>>> + (u32) reg->base, (u32) reg->size);
>>> + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
>>> }
>>> #ifdef CONFIG_MMU
>>> init_bootmem_done = 1;
>>
>
>
--
Michal Simek, Ing. (M.Eng)
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/
Microblaze U-BOOT custodian
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^ permalink raw reply [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-09-09 10:57 ` Michal Simek
(?)
@ 2010-09-09 11:06 ` Stephen Rothwell
-1 siblings, 0 replies; 113+ messages in thread
From: Stephen Rothwell @ 2010-09-09 11:06 UTC (permalink / raw)
To: monstr
Cc: Benjamin Herrenschmidt, linux-kernel, linux-mm, linux-next, Ingo Molnar
[-- Attachment #1: Type: text/plain, Size: 1011 bytes --]
Hi Michal,
On Thu, 09 Sep 2010 12:57:19 +0200 Michal Simek <monstr@monstr.eu> wrote:
>
> Benjamin Herrenschmidt wrote:
> > On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> >> Benjamin Herrenschmidt wrote:
> >>> CC: Michal Simek <monstr@monstr.eu>
> >>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >> This patch remove bug which I reported but there is another place which
> >> needs to be changed.
> >>
> >> I am not sure if my patch is correct but at least point you on places
> >> which is causing compilation errors.
> >>
> >> I tested your memblock branch with this fix and microblaze can boot.
> >
> > Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
> >
> > Cheers,
> > Ben.
>
> I don't know why but this unfixed old patch is in linux-next today. Not
> sure which tree contains it.
It came in via the tip tree.
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
[-- Attachment #2: Type: application/pgp-signature, Size: 490 bytes --]
^ permalink raw reply [flat|nested] 113+ messages in thread
* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-09-09 10:57 ` Michal Simek
@ 2010-09-09 11:54 ` Ingo Molnar
-1 siblings, 0 replies; 113+ messages in thread
From: Ingo Molnar @ 2010-09-09 11:54 UTC (permalink / raw)
To: Michal Simek
Cc: Benjamin Herrenschmidt, linux-kernel, linux-mm, linux-next,
Stephen Rothwell, H. Peter Anvin, Yinghai Lu
* Michal Simek <monstr@monstr.eu> wrote:
> Benjamin Herrenschmidt wrote:
> >On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> >>Benjamin Herrenschmidt wrote:
> >>>CC: Michal Simek <monstr@monstr.eu>
> >>>Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >>This patch remove bug which I reported but there is another
> >>place which needs to be changed.
> >>
> >>I am not sure if my patch is correct but at least point you on
> >>places which is causing compilation errors.
> >>
> >>I tested your memblock branch with this fix and microblaze can boot.
> >
> >Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
> >
> >Cheers,
> >Ben.
>
> I don't know why but this unfixed old patch is in linux-next today.
Yep, i asked benh to have a look (see the mail below) but got no
response, as i assumed it had all been taken care of.
Ben, Peter?
Ingo
----- Forwarded message from Ingo Molnar <mingo@elte.hu> -----
Date: Tue, 31 Aug 2010 09:29:47 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com,
tglx@linutronix.de, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:core/memblock] memblock: Rename memblock_region to
memblock_type and memblock_property to memblock_region
* Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> On Sat, 2010-08-28 at 00:37 +0000, tip-bot for Benjamin Herrenschmidt
> wrote:
> > Commit-ID: e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > Gitweb: http://git.kernel.org/tip/e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > AuthorDate: Wed, 4 Aug 2010 14:06:41 +1000
> > Committer: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > CommitDate: Wed, 4 Aug 2010 14:21:49 +1000
> >
> > memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region
>
> He, I was just about to rebase them :-)
>
> Do you still need me to do that ?
Btw., because this is an older base, before we can push this to
linux-next i suspect we'll need fixes for those architectures that did a
memblock conversion in this cycle?
Thanks,
Ingo
^ permalink raw reply [flat|nested] 113+ messages in thread
* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-09-09 11:54 ` Ingo Molnar
0 siblings, 0 replies; 113+ messages in thread
From: Ingo Molnar @ 2010-09-09 11:54 UTC (permalink / raw)
To: Michal Simek
Cc: Benjamin Herrenschmidt, linux-kernel, linux-mm, linux-next,
Stephen Rothwell, H. Peter Anvin, Yinghai Lu
* Michal Simek <monstr@monstr.eu> wrote:
> Benjamin Herrenschmidt wrote:
> >On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> >>Benjamin Herrenschmidt wrote:
> >>>CC: Michal Simek <monstr@monstr.eu>
> >>>Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >>This patch remove bug which I reported but there is another
> >>place which needs to be changed.
> >>
> >>I am not sure if my patch is correct but at least point you on
> >>places which is causing compilation errors.
> >>
> >>I tested your memblock branch with this fix and microblaze can boot.
> >
> >Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
> >
> >Cheers,
> >Ben.
>
> I don't know why but this unfixed old patch is in linux-next today.
Yep, i asked benh to have a look (see the mail below) but got no
response, as i assumed it had all been taken care of.
Ben, Peter?
Ingo
----- Forwarded message from Ingo Molnar <mingo@elte.hu> -----
Date: Tue, 31 Aug 2010 09:29:47 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com,
tglx@linutronix.de, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:core/memblock] memblock: Rename memblock_region to
memblock_type and memblock_property to memblock_region
* Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> On Sat, 2010-08-28 at 00:37 +0000, tip-bot for Benjamin Herrenschmidt
> wrote:
> > Commit-ID: e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > Gitweb: http://git.kernel.org/tip/e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > AuthorDate: Wed, 4 Aug 2010 14:06:41 +1000
> > Committer: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > CommitDate: Wed, 4 Aug 2010 14:21:49 +1000
> >
> > memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region
>
> He, I was just about to rebase them :-)
>
> Do you still need me to do that ?
Btw., because this is an older base, before we can push this to
linux-next i suspect we'll need fixes for those architectures that did a
memblock conversion in this cycle?
Thanks,
Ingo
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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^ permalink raw reply [flat|nested] 113+ messages in thread
* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-09-09 11:54 ` Ingo Molnar
@ 2010-09-10 8:18 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-09-10 8:18 UTC (permalink / raw)
To: Ingo Molnar
Cc: Michal Simek, linux-kernel, linux-mm, linux-next,
Stephen Rothwell, H. Peter Anvin, Yinghai Lu
On Thu, 2010-09-09 at 13:54 +0200, Ingo Molnar wrote:
> * Michal Simek <monstr@monstr.eu> wrote:
>
> > Benjamin Herrenschmidt wrote:
> > >On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> > >>Benjamin Herrenschmidt wrote:
> > >>>CC: Michal Simek <monstr@monstr.eu>
> > >>>Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > >>This patch remove bug which I reported but there is another
> > >>place which needs to be changed.
> > >>
> > >>I am not sure if my patch is correct but at least point you on
> > >>places which is causing compilation errors.
> > >>
> > >>I tested your memblock branch with this fix and microblaze can boot.
> > >
> > >Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
> > >
> > >Cheers,
> > >Ben.
> >
> > I don't know why but this unfixed old patch is in linux-next today.
>
> Yep, i asked benh to have a look (see the mail below) but got no
> response, as i assumed it had all been taken care of.
Sorry, I must have been confused... I had pushed out a git branch a
while back with those updates and the ARM bits, at least I think I
did :-) I might have FAILed there. I'll check next week, I'm about to
board on a plane right now.
Cheers,
Ben.
> Ben, Peter?
>
> Ingo
>
> ----- Forwarded message from Ingo Molnar <mingo@elte.hu> -----
>
> Date: Tue, 31 Aug 2010 09:29:47 +0200
> From: Ingo Molnar <mingo@elte.hu>
> To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com,
> tglx@linutronix.de, linux-tip-commits@vger.kernel.org
> Subject: Re: [tip:core/memblock] memblock: Rename memblock_region to
> memblock_type and memblock_property to memblock_region
>
>
> * Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
>
> > On Sat, 2010-08-28 at 00:37 +0000, tip-bot for Benjamin Herrenschmidt
> > wrote:
> > > Commit-ID: e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > > Gitweb: http://git.kernel.org/tip/e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > > Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > > AuthorDate: Wed, 4 Aug 2010 14:06:41 +1000
> > > Committer: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > > CommitDate: Wed, 4 Aug 2010 14:21:49 +1000
> > >
> > > memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region
> >
> > He, I was just about to rebase them :-)
> >
> > Do you still need me to do that ?
>
> Btw., because this is an older base, before we can push this to
> linux-next i suspect we'll need fixes for those architectures that did a
> memblock conversion in this cycle?
>
> Thanks,
>
> Ingo
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
^ permalink raw reply [flat|nested] 113+ messages in thread
* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-09-10 8:18 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-09-10 8:18 UTC (permalink / raw)
To: Ingo Molnar
Cc: Michal Simek, linux-kernel, linux-mm, linux-next,
Stephen Rothwell, H. Peter Anvin, Yinghai Lu
On Thu, 2010-09-09 at 13:54 +0200, Ingo Molnar wrote:
> * Michal Simek <monstr@monstr.eu> wrote:
>
> > Benjamin Herrenschmidt wrote:
> > >On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> > >>Benjamin Herrenschmidt wrote:
> > >>>CC: Michal Simek <monstr@monstr.eu>
> > >>>Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > >>This patch remove bug which I reported but there is another
> > >>place which needs to be changed.
> > >>
> > >>I am not sure if my patch is correct but at least point you on
> > >>places which is causing compilation errors.
> > >>
> > >>I tested your memblock branch with this fix and microblaze can boot.
> > >
> > >Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
> > >
> > >Cheers,
> > >Ben.
> >
> > I don't know why but this unfixed old patch is in linux-next today.
>
> Yep, i asked benh to have a look (see the mail below) but got no
> response, as i assumed it had all been taken care of.
Sorry, I must have been confused... I had pushed out a git branch a
while back with those updates and the ARM bits, at least I think I
did :-) I might have FAILed there. I'll check next week, I'm about to
board on a plane right now.
Cheers,
Ben.
> Ben, Peter?
>
> Ingo
>
> ----- Forwarded message from Ingo Molnar <mingo@elte.hu> -----
>
> Date: Tue, 31 Aug 2010 09:29:47 +0200
> From: Ingo Molnar <mingo@elte.hu>
> To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com,
> tglx@linutronix.de, linux-tip-commits@vger.kernel.org
> Subject: Re: [tip:core/memblock] memblock: Rename memblock_region to
> memblock_type and memblock_property to memblock_region
>
>
> * Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
>
> > On Sat, 2010-08-28 at 00:37 +0000, tip-bot for Benjamin Herrenschmidt
> > wrote:
> > > Commit-ID: e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > > Gitweb: http://git.kernel.org/tip/e3239ff92a17976ac5d26fa0fe40ef3a9daf2523
> > > Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > > AuthorDate: Wed, 4 Aug 2010 14:06:41 +1000
> > > Committer: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > > CommitDate: Wed, 4 Aug 2010 14:21:49 +1000
> > >
> > > memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region
> >
> > He, I was just about to rebase them :-)
> >
> > Do you still need me to do that ?
>
> Btw., because this is an older base, before we can push this to
> linux-next i suspect we'll need fixes for those architectures that did a
> memblock conversion in this cycle?
>
> Thanks,
>
> Ingo
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
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^ permalink raw reply [flat|nested] 113+ messages in thread
* [PATCH] microblaze, memblock: fix compiling
2010-09-10 8:18 ` Benjamin Herrenschmidt
@ 2010-09-11 7:07 ` Yinghai Lu
-1 siblings, 0 replies; 113+ messages in thread
From: Yinghai Lu @ 2010-09-11 7:07 UTC (permalink / raw)
To: Benjamin Herrenschmidt, Ingo Molnar, Michal Simek, H. Peter Anvin
Cc: linux-kernel, linux-mm, Stephen Rothwell
From: Michal Simek <monstr@monstr.eu>
CC arch/microblaze/mm/init.o
arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c: In function 'mmu_init':
arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no member named 'region'
make[1]: *** [arch/microblaze/mm/init.o] Error 1
make: *** [arch/microblaze/mm] Error 2
with this fix and microblaze can boot
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Index: linux-2.6/arch/microblaze/mm/init.c
===================================================================
--- linux-2.6.orig/arch/microblaze/mm/init.c
+++ linux-2.6/arch/microblaze/mm/init.c
@@ -228,7 +228,7 @@ static void mm_cmdline_setup(void)
if (maxmem && memory_size > maxmem) {
memory_size = maxmem;
memory_end = memory_start + memory_size;
- memblock.memory.region[0].size = memory_size;
+ memblock.memory.regions[0].size = memory_size;
}
}
}
@@ -271,14 +271,14 @@ asmlinkage void __init mmu_init(void)
machine_restart(NULL);
}
- if ((u32) memblock.memory.region[0].size < 0x1000000) {
+ if ((u32) memblock.memory.regions[0].size < 0x1000000) {
printk(KERN_EMERG "Memory must be greater than 16MB\n");
machine_restart(NULL);
}
/* Find main memory where the kernel is */
- memory_start = (u32) memblock.memory.region[0].base;
- memory_end = (u32) memblock.memory.region[0].base +
- (u32) memblock.memory.region[0].size;
+ memory_start = (u32) memblock.memory.regions[0].base;
+ memory_end = (u32) memblock.memory.regions[0].base +
+ (u32) memblock.memory.regions[0].size;
memory_size = memory_end - memory_start;
mm_cmdline_setup(); /* FIXME parse args from command line - not used */
^ permalink raw reply [flat|nested] 113+ messages in thread* [PATCH] microblaze, memblock: fix compiling
@ 2010-09-11 7:07 ` Yinghai Lu
0 siblings, 0 replies; 113+ messages in thread
From: Yinghai Lu @ 2010-09-11 7:07 UTC (permalink / raw)
To: Benjamin Herrenschmidt, Ingo Molnar, Michal Simek, H. Peter Anvin
Cc: linux-kernel, linux-mm, Stephen Rothwell
From: Michal Simek <monstr@monstr.eu>
CC arch/microblaze/mm/init.o
arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c: In function 'mmu_init':
arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no member named 'region'
arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no member named 'region'
make[1]: *** [arch/microblaze/mm/init.o] Error 1
make: *** [arch/microblaze/mm] Error 2
with this fix and microblaze can boot
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Index: linux-2.6/arch/microblaze/mm/init.c
===================================================================
--- linux-2.6.orig/arch/microblaze/mm/init.c
+++ linux-2.6/arch/microblaze/mm/init.c
@@ -228,7 +228,7 @@ static void mm_cmdline_setup(void)
if (maxmem && memory_size > maxmem) {
memory_size = maxmem;
memory_end = memory_start + memory_size;
- memblock.memory.region[0].size = memory_size;
+ memblock.memory.regions[0].size = memory_size;
}
}
}
@@ -271,14 +271,14 @@ asmlinkage void __init mmu_init(void)
machine_restart(NULL);
}
- if ((u32) memblock.memory.region[0].size < 0x1000000) {
+ if ((u32) memblock.memory.regions[0].size < 0x1000000) {
printk(KERN_EMERG "Memory must be greater than 16MB\n");
machine_restart(NULL);
}
/* Find main memory where the kernel is */
- memory_start = (u32) memblock.memory.region[0].base;
- memory_end = (u32) memblock.memory.region[0].base +
- (u32) memblock.memory.region[0].size;
+ memory_start = (u32) memblock.memory.regions[0].base;
+ memory_end = (u32) memblock.memory.regions[0].base +
+ (u32) memblock.memory.regions[0].size;
memory_size = memory_end - memory_start;
mm_cmdline_setup(); /* FIXME parse args from command line - not used */
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply [flat|nested] 113+ messages in thread* [PATCH] powerpc, memblock: fix will memblock reference
2010-09-11 7:07 ` Yinghai Lu
@ 2010-09-11 7:08 ` Yinghai Lu
-1 siblings, 0 replies; 113+ messages in thread
From: Yinghai Lu @ 2010-09-11 7:08 UTC (permalink / raw)
To: Benjamin Herrenschmidt, Ingo Molnar, H. Peter Anvin
Cc: linux-kernel, linux-mm
for wii?
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Index: linux-2.6/arch/powerpc/platforms/embedded6xx/wii.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/embedded6xx/wii.c
+++ linux-2.6/arch/powerpc/platforms/embedded6xx/wii.c
@@ -65,7 +65,7 @@ static int __init page_aligned(unsigned
void __init wii_memory_fixups(void)
{
- struct memblock_region *p = memblock.memory.region;
+ struct memblock_region *p = memblock.memory.regions;
/*
* This is part of a workaround to allow the use of two
^ permalink raw reply [flat|nested] 113+ messages in thread* [PATCH] powerpc, memblock: fix will memblock reference
@ 2010-09-11 7:08 ` Yinghai Lu
0 siblings, 0 replies; 113+ messages in thread
From: Yinghai Lu @ 2010-09-11 7:08 UTC (permalink / raw)
To: Benjamin Herrenschmidt, Ingo Molnar, H. Peter Anvin
Cc: linux-kernel, linux-mm
for wii?
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Index: linux-2.6/arch/powerpc/platforms/embedded6xx/wii.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/embedded6xx/wii.c
+++ linux-2.6/arch/powerpc/platforms/embedded6xx/wii.c
@@ -65,7 +65,7 @@ static int __init page_aligned(unsigned
void __init wii_memory_fixups(void)
{
- struct memblock_region *p = memblock.memory.region;
+ struct memblock_region *p = memblock.memory.regions;
/*
* This is part of a workaround to allow the use of two
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 113+ messages in thread* [tip:core/memblock] powerpc, memblock: Fix memblock API change fallout
2010-09-11 7:08 ` Yinghai Lu
(?)
@ 2010-09-11 7:34 ` tip-bot for Yinghai Lu
-1 siblings, 0 replies; 113+ messages in thread
From: tip-bot for Yinghai Lu @ 2010-09-11 7:34 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, benh, yinghai, tglx, mingo
Commit-ID: 0d63b32c4c6692f7df7b87be3a71353948a3ab18
Gitweb: http://git.kernel.org/tip/0d63b32c4c6692f7df7b87be3a71353948a3ab18
Author: Yinghai Lu <yinghai@kernel.org>
AuthorDate: Sat, 11 Sep 2010 00:08:42 -0700
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sat, 11 Sep 2010 09:26:43 +0200
powerpc, memblock: Fix memblock API change fallout
Fix memblock API change fallout in the WII code.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: linux-mm@kvack.org
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
LKML-Reference: <4C8B2AFA.2000705@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/powerpc/platforms/embedded6xx/wii.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
index 8450c29..649473a 100644
--- a/arch/powerpc/platforms/embedded6xx/wii.c
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -65,7 +65,7 @@ static int __init page_aligned(unsigned long x)
void __init wii_memory_fixups(void)
{
- struct memblock_region *p = memblock.memory.region;
+ struct memblock_region *p = memblock.memory.regions;
/*
* This is part of a workaround to allow the use of two
^ permalink raw reply related [flat|nested] 113+ messages in thread* [tip:core/memblock] powerpc, memblock: Fix memblock API change fallout
2010-09-11 7:08 ` Yinghai Lu
(?)
(?)
@ 2010-09-11 8:34 ` tip-bot for Yinghai Lu
-1 siblings, 0 replies; 113+ messages in thread
From: tip-bot for Yinghai Lu @ 2010-09-11 8:34 UTC (permalink / raw)
To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, benh, yinghai, tglx, mingo
Commit-ID: 823108a056c52a83c32ca199a57566a36fad4d19
Gitweb: http://git.kernel.org/tip/823108a056c52a83c32ca199a57566a36fad4d19
Author: Yinghai Lu <yinghai@kernel.org>
AuthorDate: Sat, 11 Sep 2010 00:08:42 -0700
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sat, 11 Sep 2010 10:30:28 +0200
powerpc, memblock: Fix memblock API change fallout
Fix memblock API change fallout in the WII code.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: linux-mm@kvack.org
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
LKML-Reference: <4C8B2AFA.2000705@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/powerpc/platforms/embedded6xx/wii.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
index 8450c29..649473a 100644
--- a/arch/powerpc/platforms/embedded6xx/wii.c
+++ b/arch/powerpc/platforms/embedded6xx/wii.c
@@ -65,7 +65,7 @@ static int __init page_aligned(unsigned long x)
void __init wii_memory_fixups(void)
{
- struct memblock_region *p = memblock.memory.region;
+ struct memblock_region *p = memblock.memory.regions;
/*
* This is part of a workaround to allow the use of two
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [tip:core/memblock] memblock, microblaze: Fix memblock API change fallout
2010-09-11 7:07 ` Yinghai Lu
(?)
(?)
@ 2010-09-11 7:34 ` tip-bot for Yinghai Lu
-1 siblings, 0 replies; 113+ messages in thread
From: tip-bot for Yinghai Lu @ 2010-09-11 7:34 UTC (permalink / raw)
To: linux-tip-commits
Cc: linux-kernel, hpa, mingo, yinghai, benh, monstr, tglx, sfr, mingo
Commit-ID: 78cf195c41a69521f4b3e3fd8b8bd4ecbfcdac85
Gitweb: http://git.kernel.org/tip/78cf195c41a69521f4b3e3fd8b8bd4ecbfcdac85
Author: Yinghai Lu <yinghai@kernel.org>
AuthorDate: Sat, 11 Sep 2010 00:07:06 -0700
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sat, 11 Sep 2010 09:26:43 +0200
memblock, microblaze: Fix memblock API change fallout
Michal Simek reported this build failure:
CC arch/microblaze/mm/init.o
arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no member named 'region'
...
Adopt Microblaze to the memblock API changes.
Reported-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: linux-mm@kvack.org
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
LKML-Reference: <4C8B2A9A.1040303@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/microblaze/mm/init.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 840026c..c843786 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -228,7 +228,7 @@ static void mm_cmdline_setup(void)
if (maxmem && memory_size > maxmem) {
memory_size = maxmem;
memory_end = memory_start + memory_size;
- memblock.memory.region[0].size = memory_size;
+ memblock.memory.regions[0].size = memory_size;
}
}
}
@@ -271,14 +271,14 @@ asmlinkage void __init mmu_init(void)
machine_restart(NULL);
}
- if ((u32) memblock.memory.region[0].size < 0x1000000) {
+ if ((u32) memblock.memory.regions[0].size < 0x1000000) {
printk(KERN_EMERG "Memory must be greater than 16MB\n");
machine_restart(NULL);
}
/* Find main memory where the kernel is */
- memory_start = (u32) memblock.memory.region[0].base;
- memory_end = (u32) memblock.memory.region[0].base +
- (u32) memblock.memory.region[0].size;
+ memory_start = (u32) memblock.memory.regions[0].base;
+ memory_end = (u32) memblock.memory.regions[0].base +
+ (u32) memblock.memory.regions[0].size;
memory_size = memory_end - memory_start;
mm_cmdline_setup(); /* FIXME parse args from command line - not used */
^ permalink raw reply related [flat|nested] 113+ messages in thread* [tip:core/memblock] memblock, microblaze: Fix memblock API change fallout
2010-09-11 7:07 ` Yinghai Lu
` (2 preceding siblings ...)
(?)
@ 2010-09-11 8:34 ` tip-bot for Michal Simek
-1 siblings, 0 replies; 113+ messages in thread
From: tip-bot for Michal Simek @ 2010-09-11 8:34 UTC (permalink / raw)
To: linux-tip-commits
Cc: linux-kernel, hpa, mingo, yinghai, benh, monstr, tglx, sfr, mingo
Commit-ID: da5ab11cdfdf496448e0e9cdbbc2dfe207a96c94
Gitweb: http://git.kernel.org/tip/da5ab11cdfdf496448e0e9cdbbc2dfe207a96c94
Author: Michal Simek <monstr@monstr.eu>
AuthorDate: Sat, 11 Sep 2010 00:07:06 -0700
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sat, 11 Sep 2010 10:30:28 +0200
memblock, microblaze: Fix memblock API change fallout
Adopt Microblaze to the memblock API changes, to fix this
build failure:
CC arch/microblaze/mm/init.o
arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no member named 'region'
...
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: linux-mm@kvack.org
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
LKML-Reference: <4C8B2A9A.1040303@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
arch/microblaze/mm/init.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 840026c..c843786 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -228,7 +228,7 @@ static void mm_cmdline_setup(void)
if (maxmem && memory_size > maxmem) {
memory_size = maxmem;
memory_end = memory_start + memory_size;
- memblock.memory.region[0].size = memory_size;
+ memblock.memory.regions[0].size = memory_size;
}
}
}
@@ -271,14 +271,14 @@ asmlinkage void __init mmu_init(void)
machine_restart(NULL);
}
- if ((u32) memblock.memory.region[0].size < 0x1000000) {
+ if ((u32) memblock.memory.regions[0].size < 0x1000000) {
printk(KERN_EMERG "Memory must be greater than 16MB\n");
machine_restart(NULL);
}
/* Find main memory where the kernel is */
- memory_start = (u32) memblock.memory.region[0].base;
- memory_end = (u32) memblock.memory.region[0].base +
- (u32) memblock.memory.region[0].size;
+ memory_start = (u32) memblock.memory.regions[0].base;
+ memory_end = (u32) memblock.memory.regions[0].base +
+ (u32) memblock.memory.regions[0].size;
memory_size = memory_end - memory_start;
mm_cmdline_setup(); /* FIXME parse args from command line - not used */
^ permalink raw reply related [flat|nested] 113+ messages in thread
* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-09-10 8:18 ` Benjamin Herrenschmidt
@ 2010-09-11 7:29 ` Ingo Molnar
-1 siblings, 0 replies; 113+ messages in thread
From: Ingo Molnar @ 2010-09-11 7:29 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michal Simek, linux-kernel, linux-mm, linux-next,
Stephen Rothwell, H. Peter Anvin, Yinghai Lu
* Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> > Yep, i asked benh to have a look (see the mail below) but got no
> > response, as i assumed it had all been taken care of.
>
> Sorry, I must have been confused... I had pushed out a git branch a
> while back with those updates and the ARM bits, at least I think I did
> :-) I might have FAILed there. I'll check next week, I'm about to
> board on a plane right now.
Note, i applied the build error fixes from Yinghai. Please double-check
things once you have the time.
Thanks,
Ingo
^ permalink raw reply [flat|nested] 113+ messages in thread
* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-09-11 7:29 ` Ingo Molnar
0 siblings, 0 replies; 113+ messages in thread
From: Ingo Molnar @ 2010-09-11 7:29 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Michal Simek, linux-kernel, linux-mm, linux-next,
Stephen Rothwell, H. Peter Anvin, Yinghai Lu
* Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> > Yep, i asked benh to have a look (see the mail below) but got no
> > response, as i assumed it had all been taken care of.
>
> Sorry, I must have been confused... I had pushed out a git branch a
> while back with those updates and the ARM bits, at least I think I did
> :-) I might have FAILed there. I'll check next week, I'm about to
> board on a plane right now.
Note, i applied the build error fixes from Yinghai. Please double-check
things once you have the time.
Thanks,
Ingo
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 113+ messages in thread
* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
2010-09-09 10:57 ` Michal Simek
@ 2010-09-10 8:17 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-09-10 8:17 UTC (permalink / raw)
To: monstr; +Cc: linux-kernel, linux-mm, linux-next, Stephen Rothwell, Ingo Molnar
On Thu, 2010-09-09 at 12:57 +0200, Michal Simek wrote:
> Benjamin Herrenschmidt wrote:
> > On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> >> Benjamin Herrenschmidt wrote:
> >>> CC: Michal Simek <monstr@monstr.eu>
> >>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >> This patch remove bug which I reported but there is another place which
> >> needs to be changed.
> >>
> >> I am not sure if my patch is correct but at least point you on places
> >> which is causing compilation errors.
> >>
> >> I tested your memblock branch with this fix and microblaze can boot.
> >
> > Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
> >
> > Cheers,
> > Ben.
>
> I don't know why but this unfixed old patch is in linux-next today. Not
> sure which tree contains it.
I'm pretty sure I had all that fixed up including the ARM stuff. I
wonder if Ingo picked my latest stuff (or maybe I failed to push it
out).
I'm still travelling, I'll be back next week at which point I can have a
look.
Cheers,
Ben.
> Thanks,
> Michal
>
> >>
> >> CC arch/microblaze/mm/init.o
> >> arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
> >> arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c: In function 'mmu_init':
> >> arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
> >> member named 'region'
> >> make[1]: *** [arch/microblaze/mm/init.o] Error 1
> >> make: *** [arch/microblaze/mm] Error 2
> >>
> >>
> >> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> >> index 32a702b..a9d7b9b 100644
> >> --- a/arch/microblaze/mm/init.c
> >> +++ b/arch/microblaze/mm/init.c
> >> @@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
> >> if (maxmem && memory_size > maxmem) {
> >> memory_size = maxmem;
> >> memory_end = memory_start + memory_size;
> >> - memblock.memory.region[0].size = memory_size;
> >> + memblock.memory.regions[0].size = memory_size;
> >> }
> >> }
> >> }
> >> @@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
> >> machine_restart(NULL);
> >> }
> >>
> >> - if ((u32) memblock.memory.region[0].size < 0x1000000) {
> >> + if ((u32) memblock.memory.regions[0].size < 0x1000000) {
> >> printk(KERN_EMERG "Memory must be greater than 16MB\n");
> >> machine_restart(NULL);
> >> }
> >> /* Find main memory where the kernel is */
> >> - memory_start = (u32) memblock.memory.region[0].base;
> >> - memory_end = (u32) memblock.memory.region[0].base +
> >> - (u32) memblock.memory.region[0].size;
> >> + memory_start = (u32) memblock.memory.regions[0].base;
> >> + memory_end = (u32) memblock.memory.regions[0].base +
> >> + (u32) memblock.memory.regions[0].size;
> >> memory_size = memory_end - memory_start;
> >>
> >> mm_cmdline_setup(); /* FIXME parse args from command line - not
> >> used */
> >>
> >>
> >>
> >>> ---
> >>> arch/microblaze/mm/init.c | 20 +++++++++-----------
> >>> 1 files changed, 9 insertions(+), 11 deletions(-)
> >>>
> >>> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> >>> index afd6494..32a702b 100644
> >>> --- a/arch/microblaze/mm/init.c
> >>> +++ b/arch/microblaze/mm/init.c
> >>> @@ -70,16 +70,16 @@ static void __init paging_init(void)
> >>>
> >>> void __init setup_memory(void)
> >>> {
> >>> - int i;
> >>> unsigned long map_size;
> >>> + struct memblock_region *reg;
> >>> +
> >>> #ifndef CONFIG_MMU
> >>> u32 kernel_align_start, kernel_align_size;
> >>>
> >>> /* Find main memory where is the kernel */
> >>> - for (i = 0; i < memblock.memory.cnt; i++) {
> >>> - memory_start = (u32) memblock.memory.regions[i].base;
> >>> - memory_end = (u32) memblock.memory.regions[i].base
> >>> - + (u32) memblock.memory.region[i].size;
> >>> + for_each_memblock(memory, reg) {
> >>> + memory_start = (u32)reg->base;
> >>> + memory_end = (u32) reg->base + reg->size;
> >>> if ((memory_start <= (u32)_text) &&
> >>> ((u32)_text <= memory_end)) {
> >>> memory_size = memory_end - memory_start;
> >>> @@ -147,12 +147,10 @@ void __init setup_memory(void)
> >>> free_bootmem(memory_start, memory_size);
> >>>
> >>> /* reserve allocate blocks */
> >>> - for (i = 0; i < memblock.reserved.cnt; i++) {
> >>> - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
> >>> - (u32) memblock.reserved.region[i].base,
> >>> - (u32) memblock_size_bytes(&memblock.reserved, i));
> >>> - reserve_bootmem(memblock.reserved.region[i].base,
> >>> - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
> >>> + for_each_memblock(reserved, reg) {
> >>> + pr_debug("reserved - 0x%08x-0x%08x\n",
> >>> + (u32) reg->base, (u32) reg->size);
> >>> + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
> >>> }
> >>> #ifdef CONFIG_MMU
> >>> init_bootmem_done = 1;
> >>
> >
> >
>
>
^ permalink raw reply [flat|nested] 113+ messages in thread* Re: [PATCH 08/43] memblock/microblaze: Use new accessors
@ 2010-09-10 8:17 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-09-10 8:17 UTC (permalink / raw)
To: monstr; +Cc: linux-kernel, linux-mm, linux-next, Stephen Rothwell, Ingo Molnar
On Thu, 2010-09-09 at 12:57 +0200, Michal Simek wrote:
> Benjamin Herrenschmidt wrote:
> > On Fri, 2010-08-06 at 10:52 +0200, Michal Simek wrote:
> >> Benjamin Herrenschmidt wrote:
> >>> CC: Michal Simek <monstr@monstr.eu>
> >>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >> This patch remove bug which I reported but there is another place which
> >> needs to be changed.
> >>
> >> I am not sure if my patch is correct but at least point you on places
> >> which is causing compilation errors.
> >>
> >> I tested your memblock branch with this fix and microblaze can boot.
> >
> > Ok, that's missing in my initial rename patch. I'll fix it up. Thanks.
> >
> > Cheers,
> > Ben.
>
> I don't know why but this unfixed old patch is in linux-next today. Not
> sure which tree contains it.
I'm pretty sure I had all that fixed up including the ARM stuff. I
wonder if Ingo picked my latest stuff (or maybe I failed to push it
out).
I'm still travelling, I'll be back next week at which point I can have a
look.
Cheers,
Ben.
> Thanks,
> Michal
>
> >>
> >> CC arch/microblaze/mm/init.o
> >> arch/microblaze/mm/init.c: In function 'mm_cmdline_setup':
> >> arch/microblaze/mm/init.c:236: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c: In function 'mmu_init':
> >> arch/microblaze/mm/init.c:279: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c:284: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c:285: error: 'struct memblock_type' has no
> >> member named 'region'
> >> arch/microblaze/mm/init.c:286: error: 'struct memblock_type' has no
> >> member named 'region'
> >> make[1]: *** [arch/microblaze/mm/init.o] Error 1
> >> make: *** [arch/microblaze/mm] Error 2
> >>
> >>
> >> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> >> index 32a702b..a9d7b9b 100644
> >> --- a/arch/microblaze/mm/init.c
> >> +++ b/arch/microblaze/mm/init.c
> >> @@ -233,7 +233,7 @@ static void mm_cmdline_setup(void)
> >> if (maxmem && memory_size > maxmem) {
> >> memory_size = maxmem;
> >> memory_end = memory_start + memory_size;
> >> - memblock.memory.region[0].size = memory_size;
> >> + memblock.memory.regions[0].size = memory_size;
> >> }
> >> }
> >> }
> >> @@ -276,14 +276,14 @@ asmlinkage void __init mmu_init(void)
> >> machine_restart(NULL);
> >> }
> >>
> >> - if ((u32) memblock.memory.region[0].size < 0x1000000) {
> >> + if ((u32) memblock.memory.regions[0].size < 0x1000000) {
> >> printk(KERN_EMERG "Memory must be greater than 16MB\n");
> >> machine_restart(NULL);
> >> }
> >> /* Find main memory where the kernel is */
> >> - memory_start = (u32) memblock.memory.region[0].base;
> >> - memory_end = (u32) memblock.memory.region[0].base +
> >> - (u32) memblock.memory.region[0].size;
> >> + memory_start = (u32) memblock.memory.regions[0].base;
> >> + memory_end = (u32) memblock.memory.regions[0].base +
> >> + (u32) memblock.memory.regions[0].size;
> >> memory_size = memory_end - memory_start;
> >>
> >> mm_cmdline_setup(); /* FIXME parse args from command line - not
> >> used */
> >>
> >>
> >>
> >>> ---
> >>> arch/microblaze/mm/init.c | 20 +++++++++-----------
> >>> 1 files changed, 9 insertions(+), 11 deletions(-)
> >>>
> >>> diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
> >>> index afd6494..32a702b 100644
> >>> --- a/arch/microblaze/mm/init.c
> >>> +++ b/arch/microblaze/mm/init.c
> >>> @@ -70,16 +70,16 @@ static void __init paging_init(void)
> >>>
> >>> void __init setup_memory(void)
> >>> {
> >>> - int i;
> >>> unsigned long map_size;
> >>> + struct memblock_region *reg;
> >>> +
> >>> #ifndef CONFIG_MMU
> >>> u32 kernel_align_start, kernel_align_size;
> >>>
> >>> /* Find main memory where is the kernel */
> >>> - for (i = 0; i < memblock.memory.cnt; i++) {
> >>> - memory_start = (u32) memblock.memory.regions[i].base;
> >>> - memory_end = (u32) memblock.memory.regions[i].base
> >>> - + (u32) memblock.memory.region[i].size;
> >>> + for_each_memblock(memory, reg) {
> >>> + memory_start = (u32)reg->base;
> >>> + memory_end = (u32) reg->base + reg->size;
> >>> if ((memory_start <= (u32)_text) &&
> >>> ((u32)_text <= memory_end)) {
> >>> memory_size = memory_end - memory_start;
> >>> @@ -147,12 +147,10 @@ void __init setup_memory(void)
> >>> free_bootmem(memory_start, memory_size);
> >>>
> >>> /* reserve allocate blocks */
> >>> - for (i = 0; i < memblock.reserved.cnt; i++) {
> >>> - pr_debug("reserved %d - 0x%08x-0x%08x\n", i,
> >>> - (u32) memblock.reserved.region[i].base,
> >>> - (u32) memblock_size_bytes(&memblock.reserved, i));
> >>> - reserve_bootmem(memblock.reserved.region[i].base,
> >>> - memblock_size_bytes(&memblock.reserved, i) - 1, BOOTMEM_DEFAULT);
> >>> + for_each_memblock(reserved, reg) {
> >>> + pr_debug("reserved - 0x%08x-0x%08x\n",
> >>> + (u32) reg->base, (u32) reg->size);
> >>> + reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
> >>> }
> >>> #ifdef CONFIG_MMU
> >>> init_bootmem_done = 1;
> >>
> >
> >
>
>
--
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^ permalink raw reply [flat|nested] 113+ messages in thread
* [PATCH 09/43] memblock/sh: Use new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, Paul Mundt
CC: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sh/mm/init.c | 17 +++++++++--------
1 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index d0e2491..b977475 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -200,7 +200,6 @@ static void __init bootmem_init_one_node(unsigned int nid)
unsigned long total_pages, paddr;
unsigned long end_pfn;
struct pglist_data *p;
- int i;
p = NODE_DATA(nid);
@@ -226,11 +225,12 @@ static void __init bootmem_init_one_node(unsigned int nid)
* reservations in other nodes.
*/
if (nid == 0) {
+ struct memblock_region *reg;
+
/* Reserve the sections we're already using. */
- for (i = 0; i < memblock.reserved.cnt; i++)
- reserve_bootmem(memblock.reserved.region[i].base,
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
+ for_each_memblock(reserved, reg) {
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
+ }
}
sparse_memory_present_with_active_regions(nid);
@@ -238,13 +238,14 @@ static void __init bootmem_init_one_node(unsigned int nid)
static void __init do_init_bootmem(void)
{
+ struct memblock_region *reg;
int i;
/* Add active regions with valid PFNs. */
- for (i = 0; i < memblock.memory.cnt; i++) {
+ for_each_memblock(memory, reg) {
unsigned long start_pfn, end_pfn;
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
__add_active_range(0, start_pfn, end_pfn);
}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 09/43] memblock/sh: Use new accessors
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, Paul Mundt
CC: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sh/mm/init.c | 17 +++++++++--------
1 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index d0e2491..b977475 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -200,7 +200,6 @@ static void __init bootmem_init_one_node(unsigned int nid)
unsigned long total_pages, paddr;
unsigned long end_pfn;
struct pglist_data *p;
- int i;
p = NODE_DATA(nid);
@@ -226,11 +225,12 @@ static void __init bootmem_init_one_node(unsigned int nid)
* reservations in other nodes.
*/
if (nid == 0) {
+ struct memblock_region *reg;
+
/* Reserve the sections we're already using. */
- for (i = 0; i < memblock.reserved.cnt; i++)
- reserve_bootmem(memblock.reserved.region[i].base,
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
+ for_each_memblock(reserved, reg) {
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
+ }
}
sparse_memory_present_with_active_regions(nid);
@@ -238,13 +238,14 @@ static void __init bootmem_init_one_node(unsigned int nid)
static void __init do_init_bootmem(void)
{
+ struct memblock_region *reg;
int i;
/* Add active regions with valid PFNs. */
- for (i = 0; i < memblock.memory.cnt; i++) {
+ for_each_memblock(memory, reg) {
unsigned long start_pfn, end_pfn;
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
__add_active_range(0, start_pfn, end_pfn);
}
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 10/43] memblock/sparc: Use new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, David S. Miller
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sparc/mm/init_64.c | 30 ++++++++++++------------------
1 files changed, 12 insertions(+), 18 deletions(-)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 16d8bee..dd68025 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -972,13 +972,13 @@ int of_node_to_nid(struct device_node *dp)
static void __init add_node_ranges(void)
{
- int i;
+ struct memblock_region *reg;
- for (i = 0; i < memblock.memory.cnt; i++) {
- unsigned long size = memblock_size_bytes(&memblock.memory, i);
+ for_each_memblock(memory, reg) {
+ unsigned long size = reg->size;
unsigned long start, end;
- start = memblock.memory.regions[i].base;
+ start = reg->base;
end = start + size;
while (start < end) {
unsigned long this_end;
@@ -1281,7 +1281,7 @@ static void __init bootmem_init_nonnuma(void)
{
unsigned long top_of_ram = memblock_end_of_DRAM();
unsigned long total_ram = memblock_phys_mem_size();
- unsigned int i;
+ struct memblock_region *reg;
numadbg("bootmem_init_nonnuma()\n");
@@ -1292,15 +1292,14 @@ static void __init bootmem_init_nonnuma(void)
init_node_masks_nonnuma();
- for (i = 0; i < memblock.memory.cnt; i++) {
- unsigned long size = memblock_size_bytes(&memblock.memory, i);
+ for_each_memblock(memory, reg) {
unsigned long start_pfn, end_pfn;
- if (!size)
+ if (!reg->size)
continue;
- start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
add_active_range(0, start_pfn, end_pfn);
}
@@ -1334,17 +1333,12 @@ static void __init reserve_range_in_node(int nid, unsigned long start,
static void __init trim_reserved_in_node(int nid)
{
- int i;
+ struct memblock_region *reg;
numadbg(" trim_reserved_in_node(%d)\n", nid);
- for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long start = memblock.reserved.regions[i].base;
- unsigned long size = memblock_size_bytes(&memblock.reserved, i);
- unsigned long end = start + size;
-
- reserve_range_in_node(nid, start, end);
- }
+ for_each_memblock(reserved, reg)
+ reserve_range_in_node(nid, reg->base, reg->base + reg->size);
}
static void __init bootmem_init_one_node(int nid)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 10/43] memblock/sparc: Use new accessors
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, David S. Miller
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sparc/mm/init_64.c | 30 ++++++++++++------------------
1 files changed, 12 insertions(+), 18 deletions(-)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 16d8bee..dd68025 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -972,13 +972,13 @@ int of_node_to_nid(struct device_node *dp)
static void __init add_node_ranges(void)
{
- int i;
+ struct memblock_region *reg;
- for (i = 0; i < memblock.memory.cnt; i++) {
- unsigned long size = memblock_size_bytes(&memblock.memory, i);
+ for_each_memblock(memory, reg) {
+ unsigned long size = reg->size;
unsigned long start, end;
- start = memblock.memory.regions[i].base;
+ start = reg->base;
end = start + size;
while (start < end) {
unsigned long this_end;
@@ -1281,7 +1281,7 @@ static void __init bootmem_init_nonnuma(void)
{
unsigned long top_of_ram = memblock_end_of_DRAM();
unsigned long total_ram = memblock_phys_mem_size();
- unsigned int i;
+ struct memblock_region *reg;
numadbg("bootmem_init_nonnuma()\n");
@@ -1292,15 +1292,14 @@ static void __init bootmem_init_nonnuma(void)
init_node_masks_nonnuma();
- for (i = 0; i < memblock.memory.cnt; i++) {
- unsigned long size = memblock_size_bytes(&memblock.memory, i);
+ for_each_memblock(memory, reg) {
unsigned long start_pfn, end_pfn;
- if (!size)
+ if (!reg->size)
continue;
- start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
add_active_range(0, start_pfn, end_pfn);
}
@@ -1334,17 +1333,12 @@ static void __init reserve_range_in_node(int nid, unsigned long start,
static void __init trim_reserved_in_node(int nid)
{
- int i;
+ struct memblock_region *reg;
numadbg(" trim_reserved_in_node(%d)\n", nid);
- for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long start = memblock.reserved.regions[i].base;
- unsigned long size = memblock_size_bytes(&memblock.reserved, i);
- unsigned long end = start + size;
-
- reserve_range_in_node(nid, start, end);
- }
+ for_each_memblock(reserved, reg)
+ reserve_range_in_node(nid, reg->base, reg->base + reg->size);
}
static void __init bootmem_init_one_node(int nid)
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 11/43] memblock/powerpc: Use new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/mm/hash_utils_64.c | 8 ++--
arch/powerpc/mm/mem.c | 92 ++++++++++++++-------------------------
arch/powerpc/mm/numa.c | 17 ++++---
3 files changed, 46 insertions(+), 71 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index b1a3784..4072b87 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -588,7 +588,7 @@ static void __init htab_initialize(void)
unsigned long pteg_count;
unsigned long prot;
unsigned long base = 0, size = 0, limit;
- int i;
+ struct memblock_region *reg;
DBG(" -> htab_initialize()\n");
@@ -659,9 +659,9 @@ static void __init htab_initialize(void)
*/
/* create bolted the linear mapping in the hash table */
- for (i=0; i < memblock.memory.cnt; i++) {
- base = (unsigned long)__va(memblock.memory.regions[i].base);
- size = memblock.memory.region[i].size;
+ for_each_memblock(memory, reg) {
+ base = (unsigned long)__va(reg->base);
+ size = reg->size;
DBG("creating mapping for region: %lx..%lx (prot: %lx)\n",
base, size, prot);
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index a33f5c1..52df542 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -82,18 +82,11 @@ int page_is_ram(unsigned long pfn)
return pfn < max_pfn;
#else
unsigned long paddr = (pfn << PAGE_SHIFT);
- int i;
- for (i=0; i < memblock.memory.cnt; i++) {
- unsigned long base;
+ struct memblock_region *reg;
- base = memblock.memory.regions[i].base;
-
- if ((paddr >= base) &&
- (paddr < (base + memblock.memory.regions[i].size))) {
+ for_each_memblock(memory, reg)
+ if (paddr >= reg->base && paddr < (reg->base + reg->size))
return 1;
- }
- }
-
return 0;
#endif
}
@@ -149,23 +142,19 @@ int
walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
void *arg, int (*func)(unsigned long, unsigned long, void *))
{
- struct memblock_region res;
- unsigned long pfn, len;
- u64 end;
+ struct memblock_region *reg;
+ unsigned long end_pfn = start_pfn + nr_pages;
+ unsigned long tstart, tend;
int ret = -1;
- res.base = (u64) start_pfn << PAGE_SHIFT;
- res.size = (u64) nr_pages << PAGE_SHIFT;
-
- end = res.base + res.size - 1;
- while ((res.base < end) && (memblock_find(&res) >= 0)) {
- pfn = (unsigned long)(res.base >> PAGE_SHIFT);
- len = (unsigned long)(res.size >> PAGE_SHIFT);
- ret = (*func)(pfn, len, arg);
+ for_each_memblock(memory, reg) {
+ tstart = max(start_pfn, memblock_region_base_pfn(reg));
+ tend = min(end_pfn, memblock_region_end_pfn(reg));
+ if (tstart >= tend)
+ continue;
+ ret = (*func)(tstart, tend - tstart, arg);
if (ret)
break;
- res.base += (res.size + 1);
- res.size = (end - res.base + 1);
}
return ret;
}
@@ -179,9 +168,9 @@ EXPORT_SYMBOL_GPL(walk_system_ram_range);
#ifndef CONFIG_NEED_MULTIPLE_NODES
void __init do_init_bootmem(void)
{
- unsigned long i;
unsigned long start, bootmap_pages;
unsigned long total_pages;
+ struct memblock_region *reg;
int boot_mapsize;
max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
@@ -204,10 +193,10 @@ void __init do_init_bootmem(void)
boot_mapsize = init_bootmem_node(NODE_DATA(0), start >> PAGE_SHIFT, min_low_pfn, max_low_pfn);
/* Add active regions with valid PFNs */
- for (i = 0; i < memblock.memory.cnt; i++) {
+ for_each_memblock(memory, reg) {
unsigned long start_pfn, end_pfn;
- start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
add_active_range(0, start_pfn, end_pfn);
}
@@ -218,29 +207,21 @@ void __init do_init_bootmem(void)
free_bootmem_with_active_regions(0, lowmem_end_addr >> PAGE_SHIFT);
/* reserve the sections we're already using */
- for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long addr = memblock.reserved.regions[i].base +
- memblock_size_bytes(&memblock.reserved, i) - 1;
- if (addr < lowmem_end_addr)
- reserve_bootmem(memblock.reserved.regions[i].base,
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
- else if (memblock.reserved.regions[i].base < lowmem_end_addr) {
- unsigned long adjusted_size = lowmem_end_addr -
- memblock.reserved.regions[i].base;
- reserve_bootmem(memblock.reserved.regions[i].base,
- adjusted_size, BOOTMEM_DEFAULT);
+ for_each_memblock(reserved, reg) {
+ unsigned long top = reg->base + reg->size - 1;
+ if (top < lowmem_end_addr)
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
+ else if (reg->base < lowmem_end_addr) {
+ unsigned long trunc_size = lowmem_end_addr - reg->base;
+ reserve_bootmem(reg->base, trunc_size, BOOTMEM_DEFAULT);
}
}
#else
free_bootmem_with_active_regions(0, max_pfn);
/* reserve the sections we're already using */
- for (i = 0; i < memblock.reserved.cnt; i++)
- reserve_bootmem(memblock.reserved.regions[i].base,
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
-
+ for_each_memblock(reserved, reg)
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
#endif
/* XXX need to clip this if using highmem? */
sparse_memory_present_with_active_regions(0);
@@ -251,22 +232,15 @@ void __init do_init_bootmem(void)
/* mark pages that don't exist as nosave */
static int __init mark_nonram_nosave(void)
{
- unsigned long memblock_next_region_start_pfn,
- memblock_region_max_pfn;
- int i;
-
- for (i = 0; i < memblock.memory.cnt - 1; i++) {
- memblock_region_max_pfn =
- (memblock.memory.regions[i].base >> PAGE_SHIFT) +
- (memblock.memory.regions[i].size >> PAGE_SHIFT);
- memblock_next_region_start_pfn =
- memblock.memory.regions[i+1].base >> PAGE_SHIFT;
-
- if (memblock_region_max_pfn < memblock_next_region_start_pfn)
- register_nosave_region(memblock_region_max_pfn,
- memblock_next_region_start_pfn);
+ struct memblock_region *reg, *prev = NULL;
+
+ for_each_memblock(memory, reg) {
+ if (prev &&
+ memblock_region_end_pfn(prev) < memblock_region_base_pfn(reg))
+ register_nosave_region(memblock_region_end_pfn(prev),
+ memblock_region_base_pfn(reg));
+ prev = reg;
}
-
return 0;
}
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index aa731af..9ba9ba1 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -746,16 +746,17 @@ static void __init setup_nonnuma(void)
unsigned long top_of_ram = memblock_end_of_DRAM();
unsigned long total_ram = memblock_phys_mem_size();
unsigned long start_pfn, end_pfn;
- unsigned int i, nid = 0;
+ unsigned int nid = 0;
+ struct memblock_region *reg;
printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
top_of_ram, total_ram);
printk(KERN_DEBUG "Memory hole size: %ldMB\n",
(top_of_ram - total_ram) >> 20);
- for (i = 0; i < memblock.memory.cnt; ++i) {
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ for_each_memblock(memory, reg) {
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
fake_numa_create_new_node(end_pfn, &nid);
add_active_range(nid, start_pfn, end_pfn);
@@ -891,11 +892,11 @@ static struct notifier_block __cpuinitdata ppc64_numa_nb = {
static void mark_reserved_regions_for_nid(int nid)
{
struct pglist_data *node = NODE_DATA(nid);
- int i;
+ struct memblock_region *reg;
- for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long physbase = memblock.reserved.region[i].base;
- unsigned long size = memblock.reserved.region[i].size;
+ for_each_memblock(reserved, reg) {
+ unsigned long physbase = reg->base;
+ unsigned long size = reg->size;
unsigned long start_pfn = physbase >> PAGE_SHIFT;
unsigned long end_pfn = PFN_UP(physbase + size);
struct node_active_region node_ar;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 11/43] memblock/powerpc: Use new accessors
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/mm/hash_utils_64.c | 8 ++--
arch/powerpc/mm/mem.c | 92 ++++++++++++++-------------------------
arch/powerpc/mm/numa.c | 17 ++++---
3 files changed, 46 insertions(+), 71 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index b1a3784..4072b87 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -588,7 +588,7 @@ static void __init htab_initialize(void)
unsigned long pteg_count;
unsigned long prot;
unsigned long base = 0, size = 0, limit;
- int i;
+ struct memblock_region *reg;
DBG(" -> htab_initialize()\n");
@@ -659,9 +659,9 @@ static void __init htab_initialize(void)
*/
/* create bolted the linear mapping in the hash table */
- for (i=0; i < memblock.memory.cnt; i++) {
- base = (unsigned long)__va(memblock.memory.regions[i].base);
- size = memblock.memory.region[i].size;
+ for_each_memblock(memory, reg) {
+ base = (unsigned long)__va(reg->base);
+ size = reg->size;
DBG("creating mapping for region: %lx..%lx (prot: %lx)\n",
base, size, prot);
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index a33f5c1..52df542 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -82,18 +82,11 @@ int page_is_ram(unsigned long pfn)
return pfn < max_pfn;
#else
unsigned long paddr = (pfn << PAGE_SHIFT);
- int i;
- for (i=0; i < memblock.memory.cnt; i++) {
- unsigned long base;
+ struct memblock_region *reg;
- base = memblock.memory.regions[i].base;
-
- if ((paddr >= base) &&
- (paddr < (base + memblock.memory.regions[i].size))) {
+ for_each_memblock(memory, reg)
+ if (paddr >= reg->base && paddr < (reg->base + reg->size))
return 1;
- }
- }
-
return 0;
#endif
}
@@ -149,23 +142,19 @@ int
walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
void *arg, int (*func)(unsigned long, unsigned long, void *))
{
- struct memblock_region res;
- unsigned long pfn, len;
- u64 end;
+ struct memblock_region *reg;
+ unsigned long end_pfn = start_pfn + nr_pages;
+ unsigned long tstart, tend;
int ret = -1;
- res.base = (u64) start_pfn << PAGE_SHIFT;
- res.size = (u64) nr_pages << PAGE_SHIFT;
-
- end = res.base + res.size - 1;
- while ((res.base < end) && (memblock_find(&res) >= 0)) {
- pfn = (unsigned long)(res.base >> PAGE_SHIFT);
- len = (unsigned long)(res.size >> PAGE_SHIFT);
- ret = (*func)(pfn, len, arg);
+ for_each_memblock(memory, reg) {
+ tstart = max(start_pfn, memblock_region_base_pfn(reg));
+ tend = min(end_pfn, memblock_region_end_pfn(reg));
+ if (tstart >= tend)
+ continue;
+ ret = (*func)(tstart, tend - tstart, arg);
if (ret)
break;
- res.base += (res.size + 1);
- res.size = (end - res.base + 1);
}
return ret;
}
@@ -179,9 +168,9 @@ EXPORT_SYMBOL_GPL(walk_system_ram_range);
#ifndef CONFIG_NEED_MULTIPLE_NODES
void __init do_init_bootmem(void)
{
- unsigned long i;
unsigned long start, bootmap_pages;
unsigned long total_pages;
+ struct memblock_region *reg;
int boot_mapsize;
max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
@@ -204,10 +193,10 @@ void __init do_init_bootmem(void)
boot_mapsize = init_bootmem_node(NODE_DATA(0), start >> PAGE_SHIFT, min_low_pfn, max_low_pfn);
/* Add active regions with valid PFNs */
- for (i = 0; i < memblock.memory.cnt; i++) {
+ for_each_memblock(memory, reg) {
unsigned long start_pfn, end_pfn;
- start_pfn = memblock.memory.regions[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
add_active_range(0, start_pfn, end_pfn);
}
@@ -218,29 +207,21 @@ void __init do_init_bootmem(void)
free_bootmem_with_active_regions(0, lowmem_end_addr >> PAGE_SHIFT);
/* reserve the sections we're already using */
- for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long addr = memblock.reserved.regions[i].base +
- memblock_size_bytes(&memblock.reserved, i) - 1;
- if (addr < lowmem_end_addr)
- reserve_bootmem(memblock.reserved.regions[i].base,
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
- else if (memblock.reserved.regions[i].base < lowmem_end_addr) {
- unsigned long adjusted_size = lowmem_end_addr -
- memblock.reserved.regions[i].base;
- reserve_bootmem(memblock.reserved.regions[i].base,
- adjusted_size, BOOTMEM_DEFAULT);
+ for_each_memblock(reserved, reg) {
+ unsigned long top = reg->base + reg->size - 1;
+ if (top < lowmem_end_addr)
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
+ else if (reg->base < lowmem_end_addr) {
+ unsigned long trunc_size = lowmem_end_addr - reg->base;
+ reserve_bootmem(reg->base, trunc_size, BOOTMEM_DEFAULT);
}
}
#else
free_bootmem_with_active_regions(0, max_pfn);
/* reserve the sections we're already using */
- for (i = 0; i < memblock.reserved.cnt; i++)
- reserve_bootmem(memblock.reserved.regions[i].base,
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
-
+ for_each_memblock(reserved, reg)
+ reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
#endif
/* XXX need to clip this if using highmem? */
sparse_memory_present_with_active_regions(0);
@@ -251,22 +232,15 @@ void __init do_init_bootmem(void)
/* mark pages that don't exist as nosave */
static int __init mark_nonram_nosave(void)
{
- unsigned long memblock_next_region_start_pfn,
- memblock_region_max_pfn;
- int i;
-
- for (i = 0; i < memblock.memory.cnt - 1; i++) {
- memblock_region_max_pfn =
- (memblock.memory.regions[i].base >> PAGE_SHIFT) +
- (memblock.memory.regions[i].size >> PAGE_SHIFT);
- memblock_next_region_start_pfn =
- memblock.memory.regions[i+1].base >> PAGE_SHIFT;
-
- if (memblock_region_max_pfn < memblock_next_region_start_pfn)
- register_nosave_region(memblock_region_max_pfn,
- memblock_next_region_start_pfn);
+ struct memblock_region *reg, *prev = NULL;
+
+ for_each_memblock(memory, reg) {
+ if (prev &&
+ memblock_region_end_pfn(prev) < memblock_region_base_pfn(reg))
+ register_nosave_region(memblock_region_end_pfn(prev),
+ memblock_region_base_pfn(reg));
+ prev = reg;
}
-
return 0;
}
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index aa731af..9ba9ba1 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -746,16 +746,17 @@ static void __init setup_nonnuma(void)
unsigned long top_of_ram = memblock_end_of_DRAM();
unsigned long total_ram = memblock_phys_mem_size();
unsigned long start_pfn, end_pfn;
- unsigned int i, nid = 0;
+ unsigned int nid = 0;
+ struct memblock_region *reg;
printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
top_of_ram, total_ram);
printk(KERN_DEBUG "Memory hole size: %ldMB\n",
(top_of_ram - total_ram) >> 20);
- for (i = 0; i < memblock.memory.cnt; ++i) {
- start_pfn = memblock.memory.region[i].base >> PAGE_SHIFT;
- end_pfn = start_pfn + memblock_size_pages(&memblock.memory, i);
+ for_each_memblock(memory, reg) {
+ start_pfn = memblock_region_base_pfn(reg);
+ end_pfn = memblock_region_end_pfn(reg);
fake_numa_create_new_node(end_pfn, &nid);
add_active_range(nid, start_pfn, end_pfn);
@@ -891,11 +892,11 @@ static struct notifier_block __cpuinitdata ppc64_numa_nb = {
static void mark_reserved_regions_for_nid(int nid)
{
struct pglist_data *node = NODE_DATA(nid);
- int i;
+ struct memblock_region *reg;
- for (i = 0; i < memblock.reserved.cnt; i++) {
- unsigned long physbase = memblock.reserved.region[i].base;
- unsigned long size = memblock.reserved.region[i].size;
+ for_each_memblock(reserved, reg) {
+ unsigned long physbase = reg->base;
+ unsigned long size = reg->size;
unsigned long start_pfn = physbase >> PAGE_SHIFT;
unsigned long end_pfn = PFN_UP(physbase + size);
struct node_active_region node_ar;
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 12/43] memblock/arm: Use new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, Russell King
CC: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/mm/init.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index e739223..8504906 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -150,6 +150,7 @@ static void __init find_limits(struct meminfo *mi,
static void __init arm_bootmem_init(struct meminfo *mi,
unsigned long start_pfn, unsigned long end_pfn)
{
+ struct memblock_region *reg;
unsigned int boot_pages;
phys_addr_t bitmap;
pg_data_t *pgdat;
@@ -180,13 +181,13 @@ static void __init arm_bootmem_init(struct meminfo *mi,
/*
* Reserve the memblock reserved regions in bootmem.
*/
- for (i = 0; i < memblock.reserved.cnt; i++) {
- phys_addr_t start = memblock_start_pfn(&memblock.reserved, i);
- if (start >= start_pfn &&
- memblock_end_pfn(&memblock.reserved, i) <= end_pfn)
+ for_each_memblock(reserved, reg) {
+ phys_addr_t start = memblock_region_base_pfn(reg);
+ phys_addr_t end = memblock_region_end_pfn(reg);
+ if (start >= start_pfn && end <= end_pfn)
reserve_bootmem_node(pgdat, __pfn_to_phys(start),
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
+ (end - start) << PAGE_SHIFT,
+ BOOTMEM_DEFAULT);
}
}
@@ -247,10 +248,12 @@ static void arm_memory_present(void)
#else
static void arm_memory_present(void)
{
+ struct memblock_region *reg;
int i;
- for (i = 0; i < memblock.memory.cnt; i++)
- memory_present(0, memblock_start_pfn(&memblock.memory, i),
- memblock_end_pfn(&memblock.memory, i));
+
+ for_each_memblock(memory, reg) {
+ memory_present(0, memblock_region_base_pfn(reg),
+ memblock_region_end_pfn(reg));
}
#endif
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 12/43] memblock/arm: Use new accessors
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt, Russell King
CC: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/arm/mm/init.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index e739223..8504906 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -150,6 +150,7 @@ static void __init find_limits(struct meminfo *mi,
static void __init arm_bootmem_init(struct meminfo *mi,
unsigned long start_pfn, unsigned long end_pfn)
{
+ struct memblock_region *reg;
unsigned int boot_pages;
phys_addr_t bitmap;
pg_data_t *pgdat;
@@ -180,13 +181,13 @@ static void __init arm_bootmem_init(struct meminfo *mi,
/*
* Reserve the memblock reserved regions in bootmem.
*/
- for (i = 0; i < memblock.reserved.cnt; i++) {
- phys_addr_t start = memblock_start_pfn(&memblock.reserved, i);
- if (start >= start_pfn &&
- memblock_end_pfn(&memblock.reserved, i) <= end_pfn)
+ for_each_memblock(reserved, reg) {
+ phys_addr_t start = memblock_region_base_pfn(reg);
+ phys_addr_t end = memblock_region_end_pfn(reg);
+ if (start >= start_pfn && end <= end_pfn)
reserve_bootmem_node(pgdat, __pfn_to_phys(start),
- memblock_size_bytes(&memblock.reserved, i),
- BOOTMEM_DEFAULT);
+ (end - start) << PAGE_SHIFT,
+ BOOTMEM_DEFAULT);
}
}
@@ -247,10 +248,12 @@ static void arm_memory_present(void)
#else
static void arm_memory_present(void)
{
+ struct memblock_region *reg;
int i;
- for (i = 0; i < memblock.memory.cnt; i++)
- memory_present(0, memblock_start_pfn(&memblock.memory, i),
- memblock_end_pfn(&memblock.memory, i));
+
+ for_each_memblock(memory, reg) {
+ memory_present(0, memblock_region_base_pfn(reg),
+ memblock_region_end_pfn(reg));
}
#endif
--
1.7.0.4
--
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the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread* Re: [PATCH 12/43] memblock/arm: Use new accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-10 7:11 ` Russell King - ARM Linux
-1 siblings, 0 replies; 113+ messages in thread
From: Russell King - ARM Linux @ 2010-08-10 7:11 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: linux-kernel, linux-mm, torvalds
On Fri, Aug 06, 2010 at 03:14:53PM +1000, Benjamin Herrenschmidt wrote:
> CC: Russell King <linux@arm.linux.org.uk>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
^ permalink raw reply [flat|nested] 113+ messages in thread
* Re: [PATCH 12/43] memblock/arm: Use new accessors
@ 2010-08-10 7:11 ` Russell King - ARM Linux
0 siblings, 0 replies; 113+ messages in thread
From: Russell King - ARM Linux @ 2010-08-10 7:11 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: linux-kernel, linux-mm, torvalds
On Fri, Aug 06, 2010 at 03:14:53PM +1000, Benjamin Herrenschmidt wrote:
> CC: Russell King <linux@arm.linux.org.uk>
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 113+ messages in thread
* [PATCH 13/43] memblock: Remove obsolete accessors
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 23 -----------------------
1 files changed, 0 insertions(+), 23 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c914112..7d70fdd 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -64,29 +64,6 @@ extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
-/* Obsolete accessors */
-static inline u64
-memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
-{
- return type->regions[region_nr].size;
-}
-static inline u64
-memblock_size_pages(struct memblock_type *type, unsigned long region_nr)
-{
- return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
-}
-static inline u64
-memblock_start_pfn(struct memblock_type *type, unsigned long region_nr)
-{
- return type->regions[region_nr].base >> PAGE_SHIFT;
-}
-static inline u64
-memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
-{
- return memblock_start_pfn(type, region_nr) +
- memblock_size_pages(type, region_nr);
-}
-
/*
* pfn conversion functions
*
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 13/43] memblock: Remove obsolete accessors
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 23 -----------------------
1 files changed, 0 insertions(+), 23 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c914112..7d70fdd 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -64,29 +64,6 @@ extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
-/* Obsolete accessors */
-static inline u64
-memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
-{
- return type->regions[region_nr].size;
-}
-static inline u64
-memblock_size_pages(struct memblock_type *type, unsigned long region_nr)
-{
- return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
-}
-static inline u64
-memblock_start_pfn(struct memblock_type *type, unsigned long region_nr)
-{
- return type->regions[region_nr].base >> PAGE_SHIFT;
-}
-static inline u64
-memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
-{
- return memblock_start_pfn(type, region_nr) +
- memblock_size_pages(type, region_nr);
-}
-
/*
* pfn conversion functions
*
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 14/43] memblock: Remove memblock_find()
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Nobody uses it anymore. It's semantics were ... weird
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 1 -
mm/memblock.c | 32 --------------------------------
2 files changed, 0 insertions(+), 33 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 7d70fdd..776c7d9 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -60,7 +60,6 @@ extern int memblock_is_memory(u64 addr);
extern int memblock_is_region_memory(u64 base, u64 size);
extern int __init memblock_is_reserved(u64 addr);
extern int memblock_is_region_reserved(u64 base, u64 size);
-extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
diff --git a/mm/memblock.c b/mm/memblock.c
index aa88c62..8a118b7 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -531,35 +531,3 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
-/*
- * Given a <base, len>, find which memory regions belong to this range.
- * Adjust the request and return a contiguous chunk.
- */
-int memblock_find(struct memblock_region *res)
-{
- int i;
- u64 rstart, rend;
-
- rstart = res->base;
- rend = rstart + res->size - 1;
-
- for (i = 0; i < memblock.memory.cnt; i++) {
- u64 start = memblock.memory.regions[i].base;
- u64 end = start + memblock.memory.regions[i].size - 1;
-
- if (start > rend)
- return -1;
-
- if ((end >= rstart) && (start < rend)) {
- /* adjust the request */
- if (rstart < start)
- rstart = start;
- if (rend > end)
- rend = end;
- res->base = rstart;
- res->size = rend - rstart + 1;
- return 0;
- }
- }
- return -1;
-}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 14/43] memblock: Remove memblock_find()
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Nobody uses it anymore. It's semantics were ... weird
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 1 -
mm/memblock.c | 32 --------------------------------
2 files changed, 0 insertions(+), 33 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 7d70fdd..776c7d9 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -60,7 +60,6 @@ extern int memblock_is_memory(u64 addr);
extern int memblock_is_region_memory(u64 base, u64 size);
extern int __init memblock_is_reserved(u64 addr);
extern int memblock_is_region_reserved(u64 base, u64 size);
-extern int memblock_find(struct memblock_region *res);
extern void memblock_dump_all(void);
diff --git a/mm/memblock.c b/mm/memblock.c
index aa88c62..8a118b7 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -531,35 +531,3 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
-/*
- * Given a <base, len>, find which memory regions belong to this range.
- * Adjust the request and return a contiguous chunk.
- */
-int memblock_find(struct memblock_region *res)
-{
- int i;
- u64 rstart, rend;
-
- rstart = res->base;
- rend = rstart + res->size - 1;
-
- for (i = 0; i < memblock.memory.cnt; i++) {
- u64 start = memblock.memory.regions[i].base;
- u64 end = start + memblock.memory.regions[i].size - 1;
-
- if (start > rend)
- return -1;
-
- if ((end >= rstart) && (start < rend)) {
- /* adjust the request */
- if (rstart < start)
- rstart = start;
- if (rend > end)
- rend = end;
- res->base = rstart;
- res->size = rend - rstart + 1;
- return 0;
- }
- }
- return -1;
-}
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 15/43] memblock: Remove nid_range argument, arch provides memblock_nid_range() instead
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sparc/mm/init_64.c | 16 ++++++----------
include/linux/memblock.h | 7 +++++--
mm/memblock.c | 13 ++++++++-----
3 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index dd68025..0883113 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -785,8 +785,7 @@ static int find_node(unsigned long addr)
return -1;
}
-static unsigned long long nid_range(unsigned long long start,
- unsigned long long end, int *nid)
+u64 memblock_nid_range(u64 start, u64 end, int *nid)
{
*nid = find_node(start);
start += PAGE_SIZE;
@@ -804,8 +803,7 @@ static unsigned long long nid_range(unsigned long long start,
return start;
}
#else
-static unsigned long long nid_range(unsigned long long start,
- unsigned long long end, int *nid)
+u64 memblock_nid_range(u64 start, u64 end, int *nid)
{
*nid = 0;
return end;
@@ -822,8 +820,7 @@ static void __init allocate_node_data(int nid)
struct pglist_data *p;
#ifdef CONFIG_NEED_MULTIPLE_NODES
- paddr = memblock_alloc_nid(sizeof(struct pglist_data),
- SMP_CACHE_BYTES, nid, nid_range);
+ paddr = memblock_alloc_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid);
if (!paddr) {
prom_printf("Cannot allocate pglist_data for nid[%d]\n", nid);
prom_halt();
@@ -843,8 +840,7 @@ static void __init allocate_node_data(int nid)
if (p->node_spanned_pages) {
num_pages = bootmem_bootmap_pages(p->node_spanned_pages);
- paddr = memblock_alloc_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid,
- nid_range);
+ paddr = memblock_alloc_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid);
if (!paddr) {
prom_printf("Cannot allocate bootmap for nid[%d]\n",
nid);
@@ -984,7 +980,7 @@ static void __init add_node_ranges(void)
unsigned long this_end;
int nid;
- this_end = nid_range(start, end, &nid);
+ this_end = memblock_nid_range(start, end, &nid);
numadbg("Adding active range nid[%d] "
"start[%lx] end[%lx]\n",
@@ -1317,7 +1313,7 @@ static void __init reserve_range_in_node(int nid, unsigned long start,
unsigned long this_end;
int n;
- this_end = nid_range(start, end, &n);
+ this_end = memblock_nid_range(start, end, &n);
if (n == nid) {
numadbg(" MATCH reserving range [%lx:%lx]\n",
start, this_end);
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 776c7d9..367dea6 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -46,8 +46,7 @@ extern long memblock_add(u64 base, u64 size);
extern long memblock_remove(u64 base, u64 size);
extern long __init memblock_free(u64 base, u64 size);
extern long __init memblock_reserve(u64 base, u64 size);
-extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
- u64 (*nid_range)(u64, u64, int *));
+extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
extern u64 __init memblock_alloc(u64 size, u64 align);
extern u64 __init memblock_alloc_base(u64 size,
u64, u64 max_addr);
@@ -63,6 +62,10 @@ extern int memblock_is_region_reserved(u64 base, u64 size);
extern void memblock_dump_all(void);
+/* Provided by the architecture */
+extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
+
+
/*
* pfn conversion functions
*
diff --git a/mm/memblock.c b/mm/memblock.c
index 8a118b7..13807f2 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -319,7 +319,6 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
}
static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
- u64 (*nid_range)(u64, u64, int *),
u64 size, u64 align, int nid)
{
u64 start, end;
@@ -332,7 +331,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
u64 this_end;
int this_nid;
- this_end = nid_range(start, end, &this_nid);
+ this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
u64 ret = memblock_alloc_nid_unreserved(start, this_end,
size, align);
@@ -345,8 +344,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
return ~(u64)0;
}
-u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
- u64 (*nid_range)(u64 start, u64 end, int *nid))
+u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
{
struct memblock_type *mem = &memblock.memory;
int i;
@@ -357,7 +355,6 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
for (i = 0; i < mem->cnt; i++) {
u64 ret = memblock_alloc_nid_region(&mem->regions[i],
- nid_range,
size, align, nid);
if (ret != ~(u64)0)
return ret;
@@ -531,3 +528,9 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
+u64 __weak memblock_nid_range(u64 start, u64 end, int *nid)
+{
+ *nid = 0;
+
+ return end;
+}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 15/43] memblock: Remove nid_range argument, arch provides memblock_nid_range() instead
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sparc/mm/init_64.c | 16 ++++++----------
include/linux/memblock.h | 7 +++++--
mm/memblock.c | 13 ++++++++-----
3 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index dd68025..0883113 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -785,8 +785,7 @@ static int find_node(unsigned long addr)
return -1;
}
-static unsigned long long nid_range(unsigned long long start,
- unsigned long long end, int *nid)
+u64 memblock_nid_range(u64 start, u64 end, int *nid)
{
*nid = find_node(start);
start += PAGE_SIZE;
@@ -804,8 +803,7 @@ static unsigned long long nid_range(unsigned long long start,
return start;
}
#else
-static unsigned long long nid_range(unsigned long long start,
- unsigned long long end, int *nid)
+u64 memblock_nid_range(u64 start, u64 end, int *nid)
{
*nid = 0;
return end;
@@ -822,8 +820,7 @@ static void __init allocate_node_data(int nid)
struct pglist_data *p;
#ifdef CONFIG_NEED_MULTIPLE_NODES
- paddr = memblock_alloc_nid(sizeof(struct pglist_data),
- SMP_CACHE_BYTES, nid, nid_range);
+ paddr = memblock_alloc_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid);
if (!paddr) {
prom_printf("Cannot allocate pglist_data for nid[%d]\n", nid);
prom_halt();
@@ -843,8 +840,7 @@ static void __init allocate_node_data(int nid)
if (p->node_spanned_pages) {
num_pages = bootmem_bootmap_pages(p->node_spanned_pages);
- paddr = memblock_alloc_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid,
- nid_range);
+ paddr = memblock_alloc_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid);
if (!paddr) {
prom_printf("Cannot allocate bootmap for nid[%d]\n",
nid);
@@ -984,7 +980,7 @@ static void __init add_node_ranges(void)
unsigned long this_end;
int nid;
- this_end = nid_range(start, end, &nid);
+ this_end = memblock_nid_range(start, end, &nid);
numadbg("Adding active range nid[%d] "
"start[%lx] end[%lx]\n",
@@ -1317,7 +1313,7 @@ static void __init reserve_range_in_node(int nid, unsigned long start,
unsigned long this_end;
int n;
- this_end = nid_range(start, end, &n);
+ this_end = memblock_nid_range(start, end, &n);
if (n == nid) {
numadbg(" MATCH reserving range [%lx:%lx]\n",
start, this_end);
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 776c7d9..367dea6 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -46,8 +46,7 @@ extern long memblock_add(u64 base, u64 size);
extern long memblock_remove(u64 base, u64 size);
extern long __init memblock_free(u64 base, u64 size);
extern long __init memblock_reserve(u64 base, u64 size);
-extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
- u64 (*nid_range)(u64, u64, int *));
+extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
extern u64 __init memblock_alloc(u64 size, u64 align);
extern u64 __init memblock_alloc_base(u64 size,
u64, u64 max_addr);
@@ -63,6 +62,10 @@ extern int memblock_is_region_reserved(u64 base, u64 size);
extern void memblock_dump_all(void);
+/* Provided by the architecture */
+extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
+
+
/*
* pfn conversion functions
*
diff --git a/mm/memblock.c b/mm/memblock.c
index 8a118b7..13807f2 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -319,7 +319,6 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
}
static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
- u64 (*nid_range)(u64, u64, int *),
u64 size, u64 align, int nid)
{
u64 start, end;
@@ -332,7 +331,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
u64 this_end;
int this_nid;
- this_end = nid_range(start, end, &this_nid);
+ this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
u64 ret = memblock_alloc_nid_unreserved(start, this_end,
size, align);
@@ -345,8 +344,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
return ~(u64)0;
}
-u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
- u64 (*nid_range)(u64 start, u64 end, int *nid))
+u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
{
struct memblock_type *mem = &memblock.memory;
int i;
@@ -357,7 +355,6 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
for (i = 0; i < mem->cnt; i++) {
u64 ret = memblock_alloc_nid_region(&mem->regions[i],
- nid_range,
size, align, nid);
if (ret != ~(u64)0)
return ret;
@@ -531,3 +528,9 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
+u64 __weak memblock_nid_range(u64 start, u64 end, int *nid)
+{
+ *nid = 0;
+
+ return end;
+}
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 16/43] memblock: Factor the lowest level alloc function
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 59 ++++++++++++++++++++++++++------------------------------
1 files changed, 27 insertions(+), 32 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 13807f2..e264e8c 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -294,8 +294,8 @@ static u64 memblock_align_up(u64 addr, u64 size)
return (addr + (size - 1)) & ~(size - 1);
}
-static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
- u64 size, u64 align)
+static u64 __init memblock_alloc_region(u64 start, u64 end,
+ u64 size, u64 align)
{
u64 base, res_base;
long j;
@@ -318,6 +318,13 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
return ~(u64)0;
}
+u64 __weak __init memblock_nid_range(u64 start, u64 end, int *nid)
+{
+ *nid = 0;
+
+ return end;
+}
+
static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
u64 size, u64 align, int nid)
{
@@ -333,8 +340,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
- u64 ret = memblock_alloc_nid_unreserved(start, this_end,
- size, align);
+ u64 ret = memblock_alloc_region(start, this_end, size, align);
if (ret != ~(u64)0)
return ret;
}
@@ -351,6 +357,10 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
BUG_ON(0 == size);
+ /* We do a bottom-up search for a region with the right
+ * nid since that's easier considering how memblock_nid_range()
+ * works
+ */
size = memblock_align_up(size, align);
for (i = 0; i < mem->cnt; i++) {
@@ -383,7 +393,7 @@ u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
{
- long i, j;
+ long i;
u64 base = 0;
u64 res_base;
@@ -396,33 +406,24 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
max_addr = MEMBLOCK_REAL_LIMIT;
+ /* Pump up max_addr */
+ if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
+ max_addr = ~(u64)0;
+
+ /* We do a top-down search, this tends to limit memory
+ * fragmentation by keeping early boot allocs near the
+ * top of memory
+ */
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
u64 memblockbase = memblock.memory.regions[i].base;
u64 memblocksize = memblock.memory.regions[i].size;
if (memblocksize < size)
continue;
- if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
- base = memblock_align_down(memblockbase + memblocksize - size, align);
- else if (memblockbase < max_addr) {
- base = min(memblockbase + memblocksize, max_addr);
- base = memblock_align_down(base - size, align);
- } else
- continue;
-
- while (base && memblockbase <= base) {
- j = memblock_overlaps_region(&memblock.reserved, base, size);
- if (j < 0) {
- /* this area isn't reserved, take it */
- if (memblock_add_region(&memblock.reserved, base, size) < 0)
- return 0;
- return base;
- }
- res_base = memblock.reserved.regions[j].base;
- if (res_base < size)
- break;
- base = memblock_align_down(res_base - size, align);
- }
+ base = min(memblockbase + memblocksize, max_addr);
+ res_base = memblock_alloc_region(memblockbase, base, size, align);
+ if (res_base != ~(u64)0)
+ return res_base;
}
return 0;
}
@@ -528,9 +529,3 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
-u64 __weak memblock_nid_range(u64 start, u64 end, int *nid)
-{
- *nid = 0;
-
- return end;
-}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 16/43] memblock: Factor the lowest level alloc function
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 59 ++++++++++++++++++++++++++------------------------------
1 files changed, 27 insertions(+), 32 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 13807f2..e264e8c 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -294,8 +294,8 @@ static u64 memblock_align_up(u64 addr, u64 size)
return (addr + (size - 1)) & ~(size - 1);
}
-static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
- u64 size, u64 align)
+static u64 __init memblock_alloc_region(u64 start, u64 end,
+ u64 size, u64 align)
{
u64 base, res_base;
long j;
@@ -318,6 +318,13 @@ static u64 __init memblock_alloc_nid_unreserved(u64 start, u64 end,
return ~(u64)0;
}
+u64 __weak __init memblock_nid_range(u64 start, u64 end, int *nid)
+{
+ *nid = 0;
+
+ return end;
+}
+
static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
u64 size, u64 align, int nid)
{
@@ -333,8 +340,7 @@ static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
- u64 ret = memblock_alloc_nid_unreserved(start, this_end,
- size, align);
+ u64 ret = memblock_alloc_region(start, this_end, size, align);
if (ret != ~(u64)0)
return ret;
}
@@ -351,6 +357,10 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
BUG_ON(0 == size);
+ /* We do a bottom-up search for a region with the right
+ * nid since that's easier considering how memblock_nid_range()
+ * works
+ */
size = memblock_align_up(size, align);
for (i = 0; i < mem->cnt; i++) {
@@ -383,7 +393,7 @@ u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
{
- long i, j;
+ long i;
u64 base = 0;
u64 res_base;
@@ -396,33 +406,24 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
max_addr = MEMBLOCK_REAL_LIMIT;
+ /* Pump up max_addr */
+ if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
+ max_addr = ~(u64)0;
+
+ /* We do a top-down search, this tends to limit memory
+ * fragmentation by keeping early boot allocs near the
+ * top of memory
+ */
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
u64 memblockbase = memblock.memory.regions[i].base;
u64 memblocksize = memblock.memory.regions[i].size;
if (memblocksize < size)
continue;
- if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
- base = memblock_align_down(memblockbase + memblocksize - size, align);
- else if (memblockbase < max_addr) {
- base = min(memblockbase + memblocksize, max_addr);
- base = memblock_align_down(base - size, align);
- } else
- continue;
-
- while (base && memblockbase <= base) {
- j = memblock_overlaps_region(&memblock.reserved, base, size);
- if (j < 0) {
- /* this area isn't reserved, take it */
- if (memblock_add_region(&memblock.reserved, base, size) < 0)
- return 0;
- return base;
- }
- res_base = memblock.reserved.regions[j].base;
- if (res_base < size)
- break;
- base = memblock_align_down(res_base - size, align);
- }
+ base = min(memblockbase + memblocksize, max_addr);
+ res_base = memblock_alloc_region(memblockbase, base, size, align);
+ if (res_base != ~(u64)0)
+ return res_base;
}
return 0;
}
@@ -528,9 +529,3 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
-u64 __weak memblock_nid_range(u64 start, u64 end, int *nid)
-{
- *nid = 0;
-
- return end;
-}
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 17/43] memblock: Expose MEMBLOCK_ALLOC_ANYWHERE
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/mm/hash_utils_64.c | 2 +-
include/linux/memblock.h | 1 +
mm/memblock.c | 2 --
3 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 4072b87..a542ff5 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -625,7 +625,7 @@ static void __init htab_initialize(void)
if (machine_is(cell))
limit = 0x80000000;
else
- limit = 0;
+ limit = MEMBLOCK_ALLOC_ANYWHERE;
table = memblock_alloc_base(htab_size_bytes, htab_size_bytes, limit);
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 367dea6..3cf3304 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -50,6 +50,7 @@ extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
extern u64 __init memblock_alloc(u64 size, u64 align);
extern u64 __init memblock_alloc_base(u64 size,
u64, u64 max_addr);
+#define MEMBLOCK_ALLOC_ANYWHERE 0
extern u64 __init __memblock_alloc_base(u64 size,
u64 align, u64 max_addr);
extern u64 __init memblock_phys_mem_size(void);
diff --git a/mm/memblock.c b/mm/memblock.c
index e264e8c..0131684 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -15,8 +15,6 @@
#include <linux/bitops.h>
#include <linux/memblock.h>
-#define MEMBLOCK_ALLOC_ANYWHERE 0
-
struct memblock memblock;
static int memblock_debug;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 17/43] memblock: Expose MEMBLOCK_ALLOC_ANYWHERE
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/mm/hash_utils_64.c | 2 +-
include/linux/memblock.h | 1 +
mm/memblock.c | 2 --
3 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 4072b87..a542ff5 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -625,7 +625,7 @@ static void __init htab_initialize(void)
if (machine_is(cell))
limit = 0x80000000;
else
- limit = 0;
+ limit = MEMBLOCK_ALLOC_ANYWHERE;
table = memblock_alloc_base(htab_size_bytes, htab_size_bytes, limit);
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 367dea6..3cf3304 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -50,6 +50,7 @@ extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
extern u64 __init memblock_alloc(u64 size, u64 align);
extern u64 __init memblock_alloc_base(u64 size,
u64, u64 max_addr);
+#define MEMBLOCK_ALLOC_ANYWHERE 0
extern u64 __init __memblock_alloc_base(u64 size,
u64 align, u64 max_addr);
extern u64 __init memblock_phys_mem_size(void);
diff --git a/mm/memblock.c b/mm/memblock.c
index e264e8c..0131684 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -15,8 +15,6 @@
#include <linux/bitops.h>
#include <linux/memblock.h>
-#define MEMBLOCK_ALLOC_ANYWHERE 0
-
struct memblock memblock;
static int memblock_debug;
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 18/43] memblock: Introduce default allocation limit and use it to replace explicit ones
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This introduce memblock.current_limit which is used to limit allocations
from memblock_alloc() or memblock_alloc_base(..., MEMBLOCK_ALLOC_ACCESSIBLE).
The old MEMBLOCK_ALLOC_ANYWHERE changes value from 0 to ~(u64)0 and can still
be used with memblock_alloc_base() to allocate really anywhere.
It is -no-longer- cropped to MEMBLOCK_REAL_LIMIT which disappears.
Note to archs: I'm leaving the default limit to MEMBLOCK_ALLOC_ANYWHERE. I
strongly recommend that you ensure that you set an appropriate limit
during boot in order to guarantee that an memblock_alloc() at any time
results in something that is accessible with a simple __va().
The reason is that a subsequent patch will introduce the ability for
the array to resize itself by reallocating itself. The MEMBLOCK core will
honor the current limit when performing those allocations.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/microblaze/include/asm/memblock.h | 3 ---
arch/powerpc/include/asm/memblock.h | 7 -------
arch/powerpc/kernel/prom.c | 20 +++++++++++++++++++-
arch/powerpc/kernel/setup_32.c | 2 +-
arch/powerpc/mm/40x_mmu.c | 5 +++--
arch/powerpc/mm/fsl_booke_mmu.c | 3 ++-
arch/powerpc/mm/hash_utils_64.c | 3 ++-
arch/powerpc/mm/init_32.c | 29 +++++++----------------------
arch/powerpc/mm/ppc_mmu_32.c | 3 +--
arch/powerpc/mm/tlb_nohash.c | 2 ++
arch/sh/include/asm/memblock.h | 2 --
arch/sparc/include/asm/memblock.h | 2 --
include/linux/memblock.h | 16 +++++++++++++++-
mm/memblock.c | 19 +++++++++++--------
14 files changed, 63 insertions(+), 53 deletions(-)
diff --git a/arch/microblaze/include/asm/memblock.h b/arch/microblaze/include/asm/memblock.h
index f9c2fa3..20a8e25 100644
--- a/arch/microblaze/include/asm/memblock.h
+++ b/arch/microblaze/include/asm/memblock.h
@@ -9,9 +9,6 @@
#ifndef _ASM_MICROBLAZE_MEMBLOCK_H
#define _ASM_MICROBLAZE_MEMBLOCK_H
-/* MEMBLOCK limit is OFF */
-#define MEMBLOCK_REAL_LIMIT 0xFFFFFFFF
-
#endif /* _ASM_MICROBLAZE_MEMBLOCK_H */
diff --git a/arch/powerpc/include/asm/memblock.h b/arch/powerpc/include/asm/memblock.h
index 3c29728..43efc34 100644
--- a/arch/powerpc/include/asm/memblock.h
+++ b/arch/powerpc/include/asm/memblock.h
@@ -5,11 +5,4 @@
#define MEMBLOCK_DBG(fmt...) udbg_printf(fmt)
-#ifdef CONFIG_PPC32
-extern phys_addr_t lowmem_end_addr;
-#define MEMBLOCK_REAL_LIMIT lowmem_end_addr
-#else
-#define MEMBLOCK_REAL_LIMIT 0
-#endif
-
#endif /* _ASM_POWERPC_MEMBLOCK_H */
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index fed9bf6..3aec0b9 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -98,7 +98,7 @@ static void __init move_device_tree(void)
if ((memory_limit && (start + size) > memory_limit) ||
overlaps_crashkernel(start, size)) {
- p = __va(memblock_alloc_base(size, PAGE_SIZE, memblock.rmo_size));
+ p = __va(memblock_alloc(size, PAGE_SIZE));
memcpy(p, initial_boot_params, size);
initial_boot_params = (struct boot_param_header *)p;
DBG("Moved device tree to 0x%p\n", p);
@@ -655,6 +655,21 @@ static void __init phyp_dump_reserve_mem(void)
static inline void __init phyp_dump_reserve_mem(void) {}
#endif /* CONFIG_PHYP_DUMP && CONFIG_PPC_RTAS */
+static void set_boot_memory_limit(void)
+{
+#ifdef CONFIG_PPC32
+ /* 601 can only access 16MB at the moment */
+ if (PVR_VER(mfspr(SPRN_PVR)) == 1)
+ memblock_set_current_limit(0x01000000);
+ /* 8xx can only access 8MB at the moment */
+ else if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
+ memblock_set_current_limit(0x00800000);
+ else
+ memblock_set_current_limit(0x10000000);
+#else
+ memblock_set_current_limit(memblock.rmo_size);
+#endif
+}
void __init early_init_devtree(void *params)
{
@@ -683,6 +698,7 @@ void __init early_init_devtree(void *params)
/* Scan memory nodes and rebuild MEMBLOCKs */
memblock_init();
+
of_scan_flat_dt(early_init_dt_scan_root, NULL);
of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL);
@@ -718,6 +734,8 @@ void __init early_init_devtree(void *params)
DBG("Phys. mem: %llx\n", memblock_phys_mem_size());
+ set_boot_memory_limit();
+
/* We may need to relocate the flat tree, do it now.
* FIXME .. and the initrd too? */
move_device_tree();
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index a10ffc8..b7eb1de 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -246,7 +246,7 @@ static void __init irqstack_early_init(void)
unsigned int i;
/* interrupt stacks must be in lowmem, we get that for free on ppc32
- * as the memblock is limited to lowmem by MEMBLOCK_REAL_LIMIT */
+ * as the memblock is limited to lowmem by default */
for_each_possible_cpu(i) {
softirq_ctx[i] = (struct thread_info *)
__va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 1dc2fa5..58969b5 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -35,6 +35,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/highmem.h>
+#include <linux/memblock.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
@@ -47,6 +48,7 @@
#include <asm/bootx.h>
#include <asm/machdep.h>
#include <asm/setup.h>
+
#include "mmu_decl.h"
extern int __map_without_ltlbs;
@@ -139,8 +141,7 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
* coverage with normal-sized pages (or other reasons) do not
* attempt to allocate outside the allowed range.
*/
-
- __initial_memory_limit_addr = memstart_addr + mapped;
+ memblock_set_current_limit(memstart_addr + mapped);
return mapped;
}
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index cdc7526..e525f86 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -40,6 +40,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/highmem.h>
+#include <linux/memblock.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
@@ -212,5 +213,5 @@ void __init adjust_total_lowmem(void)
pr_cont("%lu Mb, residual: %dMb\n", tlbcam_sz(tlbcam_index - 1) >> 20,
(unsigned int)((total_lowmem - __max_low_memory) >> 20));
- __initial_memory_limit_addr = memstart_addr + __max_low_memory;
+ memblock_set_current_limit(memstart_addr + __max_low_memory);
}
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index a542ff5..b05890e 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -696,7 +696,8 @@ static void __init htab_initialize(void)
#endif /* CONFIG_U3_DART */
BUG_ON(htab_bolt_mapping(base, base + size, __pa(base),
prot, mmu_linear_psize, mmu_kernel_ssize));
- }
+ }
+ memblock_set_current_limit(MEMBLOCK_ALLOC_ANYWHERE);
/*
* If we have a memory_limit and we've allocated TCEs then we need to
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 6a6975d..59b208b 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -92,12 +92,6 @@ int __allow_ioremap_reserved;
unsigned long __max_low_memory = MAX_LOW_MEM;
/*
- * address of the limit of what is accessible with initial MMU setup -
- * 256MB usually, but only 16MB on 601.
- */
-phys_addr_t __initial_memory_limit_addr = (phys_addr_t)0x10000000;
-
-/*
* Check for command-line options that affect what MMU_init will do.
*/
void MMU_setup(void)
@@ -126,13 +120,6 @@ void __init MMU_init(void)
if (ppc_md.progress)
ppc_md.progress("MMU:enter", 0x111);
- /* 601 can only access 16MB at the moment */
- if (PVR_VER(mfspr(SPRN_PVR)) == 1)
- __initial_memory_limit_addr = 0x01000000;
- /* 8xx can only access 8MB at the moment */
- if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
- __initial_memory_limit_addr = 0x00800000;
-
/* parse args from command line */
MMU_setup();
@@ -190,20 +177,18 @@ void __init MMU_init(void)
#ifdef CONFIG_BOOTX_TEXT
btext_unmap();
#endif
+
+ /* Shortly after that, the entire linear mapping will be available */
+ memblock_set_current_limit(lowmem_end_addr);
}
/* This is only called until mem_init is done. */
void __init *early_get_page(void)
{
- void *p;
-
- if (init_bootmem_done) {
- p = alloc_bootmem_pages(PAGE_SIZE);
- } else {
- p = __va(memblock_alloc_base(PAGE_SIZE, PAGE_SIZE,
- __initial_memory_limit_addr));
- }
- return p;
+ if (init_bootmem_done)
+ return alloc_bootmem_pages(PAGE_SIZE);
+ else
+ return __va(memblock_alloc(PAGE_SIZE, PAGE_SIZE));
}
/* Free up now-unused memory */
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index f8a0182..7d34e17 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -223,8 +223,7 @@ void __init MMU_init_hw(void)
* Find some memory for the hash table.
*/
if ( ppc_md.progress ) ppc_md.progress("hash:find piece", 0x322);
- Hash = __va(memblock_alloc_base(Hash_size, Hash_size,
- __initial_memory_limit_addr));
+ Hash = __va(memblock_alloc(Hash_size, Hash_size));
cacheable_memzero(Hash, Hash_size);
_SDR1 = __pa(Hash) | SDR1_LOW_BITS;
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index d8695b0..7ba32e7 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -432,6 +432,8 @@ static void __early_init_mmu(int boot_cpu)
* the MMU configuration
*/
mb();
+
+ memblock_set_current_limit(linear_map_top);
}
void __init early_init_mmu(void)
diff --git a/arch/sh/include/asm/memblock.h b/arch/sh/include/asm/memblock.h
index dfe683b..e87063f 100644
--- a/arch/sh/include/asm/memblock.h
+++ b/arch/sh/include/asm/memblock.h
@@ -1,6 +1,4 @@
#ifndef __ASM_SH_MEMBLOCK_H
#define __ASM_SH_MEMBLOCK_H
-#define MEMBLOCK_REAL_LIMIT 0
-
#endif /* __ASM_SH_MEMBLOCK_H */
diff --git a/arch/sparc/include/asm/memblock.h b/arch/sparc/include/asm/memblock.h
index f12af88..c67b047 100644
--- a/arch/sparc/include/asm/memblock.h
+++ b/arch/sparc/include/asm/memblock.h
@@ -5,6 +5,4 @@
#define MEMBLOCK_DBG(fmt...) prom_printf(fmt)
-#define MEMBLOCK_REAL_LIMIT 0
-
#endif /* !(_SPARC64_MEMBLOCK_H) */
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 3cf3304..c4f6e53 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -34,6 +34,7 @@ struct memblock_type {
struct memblock {
unsigned long debug;
u64 rmo_size;
+ u64 current_limit;
struct memblock_type memory;
struct memblock_type reserved;
};
@@ -46,11 +47,16 @@ extern long memblock_add(u64 base, u64 size);
extern long memblock_remove(u64 base, u64 size);
extern long __init memblock_free(u64 base, u64 size);
extern long __init memblock_reserve(u64 base, u64 size);
+
extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
extern u64 __init memblock_alloc(u64 size, u64 align);
+
+/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
+#define MEMBLOCK_ALLOC_ANYWHERE (~(u64)0)
+#define MEMBLOCK_ALLOC_ACCESSIBLE 0
+
extern u64 __init memblock_alloc_base(u64 size,
u64, u64 max_addr);
-#define MEMBLOCK_ALLOC_ANYWHERE 0
extern u64 __init __memblock_alloc_base(u64 size,
u64 align, u64 max_addr);
extern u64 __init memblock_phys_mem_size(void);
@@ -66,6 +72,14 @@ extern void memblock_dump_all(void);
/* Provided by the architecture */
extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
+/**
+ * memblock_set_current_limit - Set the current allocation limit to allow
+ * limiting allocations to what is currently
+ * accessible during boot
+ * @limit: New limit value (physical address)
+ */
+extern void memblock_set_current_limit(u64 limit);
+
/*
* pfn conversion functions
diff --git a/mm/memblock.c b/mm/memblock.c
index 0131684..770c5bf 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -115,6 +115,8 @@ void __init memblock_init(void)
memblock.reserved.regions[0].base = 0;
memblock.reserved.regions[0].size = 0;
memblock.reserved.cnt = 1;
+
+ memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
}
void __init memblock_analyze(void)
@@ -373,7 +375,7 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
u64 __init memblock_alloc(u64 size, u64 align)
{
- return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ANYWHERE);
+ return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
}
u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
@@ -399,14 +401,9 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
size = memblock_align_up(size, align);
- /* On some platforms, make sure we allocate lowmem */
- /* Note that MEMBLOCK_REAL_LIMIT may be MEMBLOCK_ALLOC_ANYWHERE */
- if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
- max_addr = MEMBLOCK_REAL_LIMIT;
-
/* Pump up max_addr */
- if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
- max_addr = ~(u64)0;
+ if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
+ max_addr = memblock.current_limit;
/* We do a top-down search, this tends to limit memory
* fragmentation by keeping early boot allocs near the
@@ -527,3 +524,9 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
+
+void __init memblock_set_current_limit(u64 limit)
+{
+ memblock.current_limit = limit;
+}
+
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 18/43] memblock: Introduce default allocation limit and use it to replace explicit ones
@ 2010-08-06 5:14 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:14 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This introduce memblock.current_limit which is used to limit allocations
from memblock_alloc() or memblock_alloc_base(..., MEMBLOCK_ALLOC_ACCESSIBLE).
The old MEMBLOCK_ALLOC_ANYWHERE changes value from 0 to ~(u64)0 and can still
be used with memblock_alloc_base() to allocate really anywhere.
It is -no-longer- cropped to MEMBLOCK_REAL_LIMIT which disappears.
Note to archs: I'm leaving the default limit to MEMBLOCK_ALLOC_ANYWHERE. I
strongly recommend that you ensure that you set an appropriate limit
during boot in order to guarantee that an memblock_alloc() at any time
results in something that is accessible with a simple __va().
The reason is that a subsequent patch will introduce the ability for
the array to resize itself by reallocating itself. The MEMBLOCK core will
honor the current limit when performing those allocations.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/microblaze/include/asm/memblock.h | 3 ---
arch/powerpc/include/asm/memblock.h | 7 -------
arch/powerpc/kernel/prom.c | 20 +++++++++++++++++++-
arch/powerpc/kernel/setup_32.c | 2 +-
arch/powerpc/mm/40x_mmu.c | 5 +++--
arch/powerpc/mm/fsl_booke_mmu.c | 3 ++-
arch/powerpc/mm/hash_utils_64.c | 3 ++-
arch/powerpc/mm/init_32.c | 29 +++++++----------------------
arch/powerpc/mm/ppc_mmu_32.c | 3 +--
arch/powerpc/mm/tlb_nohash.c | 2 ++
arch/sh/include/asm/memblock.h | 2 --
arch/sparc/include/asm/memblock.h | 2 --
include/linux/memblock.h | 16 +++++++++++++++-
mm/memblock.c | 19 +++++++++++--------
14 files changed, 63 insertions(+), 53 deletions(-)
diff --git a/arch/microblaze/include/asm/memblock.h b/arch/microblaze/include/asm/memblock.h
index f9c2fa3..20a8e25 100644
--- a/arch/microblaze/include/asm/memblock.h
+++ b/arch/microblaze/include/asm/memblock.h
@@ -9,9 +9,6 @@
#ifndef _ASM_MICROBLAZE_MEMBLOCK_H
#define _ASM_MICROBLAZE_MEMBLOCK_H
-/* MEMBLOCK limit is OFF */
-#define MEMBLOCK_REAL_LIMIT 0xFFFFFFFF
-
#endif /* _ASM_MICROBLAZE_MEMBLOCK_H */
diff --git a/arch/powerpc/include/asm/memblock.h b/arch/powerpc/include/asm/memblock.h
index 3c29728..43efc34 100644
--- a/arch/powerpc/include/asm/memblock.h
+++ b/arch/powerpc/include/asm/memblock.h
@@ -5,11 +5,4 @@
#define MEMBLOCK_DBG(fmt...) udbg_printf(fmt)
-#ifdef CONFIG_PPC32
-extern phys_addr_t lowmem_end_addr;
-#define MEMBLOCK_REAL_LIMIT lowmem_end_addr
-#else
-#define MEMBLOCK_REAL_LIMIT 0
-#endif
-
#endif /* _ASM_POWERPC_MEMBLOCK_H */
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index fed9bf6..3aec0b9 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -98,7 +98,7 @@ static void __init move_device_tree(void)
if ((memory_limit && (start + size) > memory_limit) ||
overlaps_crashkernel(start, size)) {
- p = __va(memblock_alloc_base(size, PAGE_SIZE, memblock.rmo_size));
+ p = __va(memblock_alloc(size, PAGE_SIZE));
memcpy(p, initial_boot_params, size);
initial_boot_params = (struct boot_param_header *)p;
DBG("Moved device tree to 0x%p\n", p);
@@ -655,6 +655,21 @@ static void __init phyp_dump_reserve_mem(void)
static inline void __init phyp_dump_reserve_mem(void) {}
#endif /* CONFIG_PHYP_DUMP && CONFIG_PPC_RTAS */
+static void set_boot_memory_limit(void)
+{
+#ifdef CONFIG_PPC32
+ /* 601 can only access 16MB at the moment */
+ if (PVR_VER(mfspr(SPRN_PVR)) == 1)
+ memblock_set_current_limit(0x01000000);
+ /* 8xx can only access 8MB at the moment */
+ else if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
+ memblock_set_current_limit(0x00800000);
+ else
+ memblock_set_current_limit(0x10000000);
+#else
+ memblock_set_current_limit(memblock.rmo_size);
+#endif
+}
void __init early_init_devtree(void *params)
{
@@ -683,6 +698,7 @@ void __init early_init_devtree(void *params)
/* Scan memory nodes and rebuild MEMBLOCKs */
memblock_init();
+
of_scan_flat_dt(early_init_dt_scan_root, NULL);
of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL);
@@ -718,6 +734,8 @@ void __init early_init_devtree(void *params)
DBG("Phys. mem: %llx\n", memblock_phys_mem_size());
+ set_boot_memory_limit();
+
/* We may need to relocate the flat tree, do it now.
* FIXME .. and the initrd too? */
move_device_tree();
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index a10ffc8..b7eb1de 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -246,7 +246,7 @@ static void __init irqstack_early_init(void)
unsigned int i;
/* interrupt stacks must be in lowmem, we get that for free on ppc32
- * as the memblock is limited to lowmem by MEMBLOCK_REAL_LIMIT */
+ * as the memblock is limited to lowmem by default */
for_each_possible_cpu(i) {
softirq_ctx[i] = (struct thread_info *)
__va(memblock_alloc(THREAD_SIZE, THREAD_SIZE));
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 1dc2fa5..58969b5 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -35,6 +35,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/highmem.h>
+#include <linux/memblock.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
@@ -47,6 +48,7 @@
#include <asm/bootx.h>
#include <asm/machdep.h>
#include <asm/setup.h>
+
#include "mmu_decl.h"
extern int __map_without_ltlbs;
@@ -139,8 +141,7 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
* coverage with normal-sized pages (or other reasons) do not
* attempt to allocate outside the allowed range.
*/
-
- __initial_memory_limit_addr = memstart_addr + mapped;
+ memblock_set_current_limit(memstart_addr + mapped);
return mapped;
}
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index cdc7526..e525f86 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -40,6 +40,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/highmem.h>
+#include <linux/memblock.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
@@ -212,5 +213,5 @@ void __init adjust_total_lowmem(void)
pr_cont("%lu Mb, residual: %dMb\n", tlbcam_sz(tlbcam_index - 1) >> 20,
(unsigned int)((total_lowmem - __max_low_memory) >> 20));
- __initial_memory_limit_addr = memstart_addr + __max_low_memory;
+ memblock_set_current_limit(memstart_addr + __max_low_memory);
}
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index a542ff5..b05890e 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -696,7 +696,8 @@ static void __init htab_initialize(void)
#endif /* CONFIG_U3_DART */
BUG_ON(htab_bolt_mapping(base, base + size, __pa(base),
prot, mmu_linear_psize, mmu_kernel_ssize));
- }
+ }
+ memblock_set_current_limit(MEMBLOCK_ALLOC_ANYWHERE);
/*
* If we have a memory_limit and we've allocated TCEs then we need to
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 6a6975d..59b208b 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -92,12 +92,6 @@ int __allow_ioremap_reserved;
unsigned long __max_low_memory = MAX_LOW_MEM;
/*
- * address of the limit of what is accessible with initial MMU setup -
- * 256MB usually, but only 16MB on 601.
- */
-phys_addr_t __initial_memory_limit_addr = (phys_addr_t)0x10000000;
-
-/*
* Check for command-line options that affect what MMU_init will do.
*/
void MMU_setup(void)
@@ -126,13 +120,6 @@ void __init MMU_init(void)
if (ppc_md.progress)
ppc_md.progress("MMU:enter", 0x111);
- /* 601 can only access 16MB at the moment */
- if (PVR_VER(mfspr(SPRN_PVR)) == 1)
- __initial_memory_limit_addr = 0x01000000;
- /* 8xx can only access 8MB at the moment */
- if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
- __initial_memory_limit_addr = 0x00800000;
-
/* parse args from command line */
MMU_setup();
@@ -190,20 +177,18 @@ void __init MMU_init(void)
#ifdef CONFIG_BOOTX_TEXT
btext_unmap();
#endif
+
+ /* Shortly after that, the entire linear mapping will be available */
+ memblock_set_current_limit(lowmem_end_addr);
}
/* This is only called until mem_init is done. */
void __init *early_get_page(void)
{
- void *p;
-
- if (init_bootmem_done) {
- p = alloc_bootmem_pages(PAGE_SIZE);
- } else {
- p = __va(memblock_alloc_base(PAGE_SIZE, PAGE_SIZE,
- __initial_memory_limit_addr));
- }
- return p;
+ if (init_bootmem_done)
+ return alloc_bootmem_pages(PAGE_SIZE);
+ else
+ return __va(memblock_alloc(PAGE_SIZE, PAGE_SIZE));
}
/* Free up now-unused memory */
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index f8a0182..7d34e17 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -223,8 +223,7 @@ void __init MMU_init_hw(void)
* Find some memory for the hash table.
*/
if ( ppc_md.progress ) ppc_md.progress("hash:find piece", 0x322);
- Hash = __va(memblock_alloc_base(Hash_size, Hash_size,
- __initial_memory_limit_addr));
+ Hash = __va(memblock_alloc(Hash_size, Hash_size));
cacheable_memzero(Hash, Hash_size);
_SDR1 = __pa(Hash) | SDR1_LOW_BITS;
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index d8695b0..7ba32e7 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -432,6 +432,8 @@ static void __early_init_mmu(int boot_cpu)
* the MMU configuration
*/
mb();
+
+ memblock_set_current_limit(linear_map_top);
}
void __init early_init_mmu(void)
diff --git a/arch/sh/include/asm/memblock.h b/arch/sh/include/asm/memblock.h
index dfe683b..e87063f 100644
--- a/arch/sh/include/asm/memblock.h
+++ b/arch/sh/include/asm/memblock.h
@@ -1,6 +1,4 @@
#ifndef __ASM_SH_MEMBLOCK_H
#define __ASM_SH_MEMBLOCK_H
-#define MEMBLOCK_REAL_LIMIT 0
-
#endif /* __ASM_SH_MEMBLOCK_H */
diff --git a/arch/sparc/include/asm/memblock.h b/arch/sparc/include/asm/memblock.h
index f12af88..c67b047 100644
--- a/arch/sparc/include/asm/memblock.h
+++ b/arch/sparc/include/asm/memblock.h
@@ -5,6 +5,4 @@
#define MEMBLOCK_DBG(fmt...) prom_printf(fmt)
-#define MEMBLOCK_REAL_LIMIT 0
-
#endif /* !(_SPARC64_MEMBLOCK_H) */
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 3cf3304..c4f6e53 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -34,6 +34,7 @@ struct memblock_type {
struct memblock {
unsigned long debug;
u64 rmo_size;
+ u64 current_limit;
struct memblock_type memory;
struct memblock_type reserved;
};
@@ -46,11 +47,16 @@ extern long memblock_add(u64 base, u64 size);
extern long memblock_remove(u64 base, u64 size);
extern long __init memblock_free(u64 base, u64 size);
extern long __init memblock_reserve(u64 base, u64 size);
+
extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
extern u64 __init memblock_alloc(u64 size, u64 align);
+
+/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
+#define MEMBLOCK_ALLOC_ANYWHERE (~(u64)0)
+#define MEMBLOCK_ALLOC_ACCESSIBLE 0
+
extern u64 __init memblock_alloc_base(u64 size,
u64, u64 max_addr);
-#define MEMBLOCK_ALLOC_ANYWHERE 0
extern u64 __init __memblock_alloc_base(u64 size,
u64 align, u64 max_addr);
extern u64 __init memblock_phys_mem_size(void);
@@ -66,6 +72,14 @@ extern void memblock_dump_all(void);
/* Provided by the architecture */
extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
+/**
+ * memblock_set_current_limit - Set the current allocation limit to allow
+ * limiting allocations to what is currently
+ * accessible during boot
+ * @limit: New limit value (physical address)
+ */
+extern void memblock_set_current_limit(u64 limit);
+
/*
* pfn conversion functions
diff --git a/mm/memblock.c b/mm/memblock.c
index 0131684..770c5bf 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -115,6 +115,8 @@ void __init memblock_init(void)
memblock.reserved.regions[0].base = 0;
memblock.reserved.regions[0].size = 0;
memblock.reserved.cnt = 1;
+
+ memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
}
void __init memblock_analyze(void)
@@ -373,7 +375,7 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
u64 __init memblock_alloc(u64 size, u64 align)
{
- return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ANYWHERE);
+ return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
}
u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
@@ -399,14 +401,9 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
size = memblock_align_up(size, align);
- /* On some platforms, make sure we allocate lowmem */
- /* Note that MEMBLOCK_REAL_LIMIT may be MEMBLOCK_ALLOC_ANYWHERE */
- if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
- max_addr = MEMBLOCK_REAL_LIMIT;
-
/* Pump up max_addr */
- if (max_addr == MEMBLOCK_ALLOC_ANYWHERE)
- max_addr = ~(u64)0;
+ if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
+ max_addr = memblock.current_limit;
/* We do a top-down search, this tends to limit memory
* fragmentation by keeping early boot allocs near the
@@ -527,3 +524,9 @@ int memblock_is_region_reserved(u64 base, u64 size)
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
+
+void __init memblock_set_current_limit(u64 limit)
+{
+ memblock.current_limit = limit;
+}
+
--
1.7.0.4
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 19/43] memblock: Remove rmo_size, burry it in arch/powerpc where it belongs
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
The RMA (RMO is a misnomer) is a concept specific to ppc64 (in fact
server ppc64 though I hijack it on embedded ppc64 for similar purposes)
and represents the area of memory that can be accessed in real mode
(aka with MMU off), or on embedded, from the exception vectors (which
is bolted in the TLB) which pretty much boils down to the same thing.
We take that out of the generic MEMBLOCK data structure and move it into
arch/powerpc where it belongs, renaming it to "RMA" while at it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/include/asm/mmu.h | 12 ++++++++++++
arch/powerpc/kernel/head_40x.S | 6 +-----
arch/powerpc/kernel/paca.c | 2 +-
arch/powerpc/kernel/prom.c | 29 ++++++++---------------------
arch/powerpc/kernel/rtas.c | 2 +-
arch/powerpc/kernel/setup_64.c | 2 +-
arch/powerpc/mm/40x_mmu.c | 14 +++++++++++++-
arch/powerpc/mm/44x_mmu.c | 14 ++++++++++++++
arch/powerpc/mm/fsl_booke_mmu.c | 9 +++++++++
arch/powerpc/mm/hash_utils_64.c | 22 +++++++++++++++++++++-
arch/powerpc/mm/init_32.c | 14 ++++++++++++++
arch/powerpc/mm/init_64.c | 1 +
arch/powerpc/mm/ppc_mmu_32.c | 15 +++++++++++++++
arch/powerpc/mm/tlb_nohash.c | 14 ++++++++++++++
include/linux/memblock.h | 1 -
mm/memblock.c | 8 --------
16 files changed, 125 insertions(+), 40 deletions(-)
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 7ebf42e..bb40a06 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -2,6 +2,8 @@
#define _ASM_POWERPC_MMU_H_
#ifdef __KERNEL__
+#include <linux/types.h>
+
#include <asm/asm-compat.h>
#include <asm/feature-fixups.h>
@@ -82,6 +84,16 @@ extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
extern void early_init_mmu(void);
extern void early_init_mmu_secondary(void);
+extern void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size);
+
+#ifdef CONFIG_PPC64
+/* This is our real memory area size on ppc64 server, on embedded, we
+ * make it match the size our of bolted TLB area
+ */
+extern u64 ppc64_rma_size;
+#endif /* CONFIG_PPC64 */
+
#endif /* !__ASSEMBLY__ */
/* The kernel use the constants below to index in the page sizes array.
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index a90625f..8278e8b 100644
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -923,11 +923,7 @@ initial_mmu:
mtspr SPRN_PID,r0
sync
- /* Configure and load two entries into TLB slots 62 and 63.
- * In case we are pinning TLBs, these are reserved in by the
- * other TLB functions. If not reserving, then it doesn't
- * matter where they are loaded.
- */
+ /* Configure and load one entry into TLB slots 63 */
clrrwi r4,r4,10 /* Mask off the real page number */
ori r4,r4,(TLB_WR | TLB_EX) /* Set the write and execute bits */
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 139a773..b9ffd7d 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -117,7 +117,7 @@ void __init allocate_pacas(void)
* the first segment. On iSeries they must be within the area mapped
* by the HV, which is HvPagesToMap * HVPAGESIZE bytes.
*/
- limit = min(0x10000000ULL, memblock.rmo_size);
+ limit = min(0x10000000ULL, ppc64_rma_size);
if (firmware_has_feature(FW_FEATURE_ISERIES))
limit = min(limit, HvPagesToMap * HVPAGESIZE);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 3aec0b9..c3c6a88 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -66,6 +66,7 @@
int __initdata iommu_is_off;
int __initdata iommu_force_on;
unsigned long tce_alloc_start, tce_alloc_end;
+u64 ppc64_rma_size;
#endif
static int __init early_parse_mem(char *p)
@@ -492,7 +493,7 @@ static int __init early_init_dt_scan_memory_ppc(unsigned long node,
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
-#if defined(CONFIG_PPC64)
+#ifdef CONFIG_PPC64
if (iommu_is_off) {
if (base >= 0x80000000ul)
return;
@@ -501,9 +502,13 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
}
#endif
- memblock_add(base, size);
-
+ /* First MEMBLOCK added, do some special initializations */
+ if (memstart_addr == ~(phys_addr_t)0)
+ setup_initial_memory_limit(base, size);
memstart_addr = min((u64)memstart_addr, base);
+
+ /* Add the chunk to the MEMBLOCK list */
+ memblock_add(base, size);
}
u64 __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
@@ -655,22 +660,6 @@ static void __init phyp_dump_reserve_mem(void)
static inline void __init phyp_dump_reserve_mem(void) {}
#endif /* CONFIG_PHYP_DUMP && CONFIG_PPC_RTAS */
-static void set_boot_memory_limit(void)
-{
-#ifdef CONFIG_PPC32
- /* 601 can only access 16MB at the moment */
- if (PVR_VER(mfspr(SPRN_PVR)) == 1)
- memblock_set_current_limit(0x01000000);
- /* 8xx can only access 8MB at the moment */
- else if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
- memblock_set_current_limit(0x00800000);
- else
- memblock_set_current_limit(0x10000000);
-#else
- memblock_set_current_limit(memblock.rmo_size);
-#endif
-}
-
void __init early_init_devtree(void *params)
{
phys_addr_t limit;
@@ -734,8 +723,6 @@ void __init early_init_devtree(void *params)
DBG("Phys. mem: %llx\n", memblock_phys_mem_size());
- set_boot_memory_limit();
-
/* We may need to relocate the flat tree, do it now.
* FIXME .. and the initrd too? */
move_device_tree();
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index d0516db..1662777 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -934,7 +934,7 @@ void __init rtas_initialize(void)
*/
#ifdef CONFIG_PPC64
if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR)) {
- rtas_region = min(memblock.rmo_size, RTAS_INSTANTIATE_MAX);
+ rtas_region = min(ppc64_rma_size, RTAS_INSTANTIATE_MAX);
ibm_suspend_me_token = rtas_token("ibm,suspend-me");
}
#endif
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index d135f93..4360944 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -487,7 +487,7 @@ static void __init emergency_stack_init(void)
* bringup, we need to get at them in real mode. This means they
* must also be within the RMO region.
*/
- limit = min(slb0_limit(), memblock.rmo_size);
+ limit = min(slb0_limit(), ppc64_rma_size);
for_each_possible_cpu(i) {
unsigned long sp;
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 58969b5..5810967 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -141,7 +141,19 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
* coverage with normal-sized pages (or other reasons) do not
* attempt to allocate outside the allowed range.
*/
- memblock_set_current_limit(memstart_addr + mapped);
+ memblock_set_current_limit(mapped);
return mapped;
}
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 40x can only access 16MB at the moment (see head_40x.S) */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
+}
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index d8c6efb..024acab 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -24,6 +24,8 @@
*/
#include <linux/init.h>
+#include <linux/memblock.h>
+
#include <asm/mmu.h>
#include <asm/system.h>
#include <asm/page.h>
@@ -213,6 +215,18 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
return total_lowmem;
}
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 44x has a 256M TLB entry pinned at boot */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, PPC_PIN_SIZE));
+}
+
#ifdef CONFIG_SMP
void __cpuinit mmu_init_secondary(int cpu)
{
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index e525f86..0be8fe2 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -215,3 +215,12 @@ void __init adjust_total_lowmem(void)
memblock_set_current_limit(memstart_addr + __max_low_memory);
}
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ phys_addr_t limit = first_memblock_base + first_memblock_size;
+
+ /* 64M mapped initially according to head_fsl_booke.S */
+ memblock_set_current_limit(min_t(u64, limit, 0x04000000));
+}
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index b05890e..83f534d 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -649,7 +649,7 @@ static void __init htab_initialize(void)
#ifdef CONFIG_DEBUG_PAGEALLOC
linear_map_hash_count = memblock_end_of_DRAM() >> PAGE_SHIFT;
linear_map_hash_slots = __va(memblock_alloc_base(linear_map_hash_count,
- 1, memblock.rmo_size));
+ 1, ppc64_rma_size));
memset(linear_map_hash_slots, 0, linear_map_hash_count);
#endif /* CONFIG_DEBUG_PAGEALLOC */
@@ -1248,3 +1248,23 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
local_irq_restore(flags);
}
#endif /* CONFIG_DEBUG_PAGEALLOC */
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* On LPAR systems, the first entry is our RMA region,
+ * non-LPAR 64-bit hash MMU systems don't have a limitation
+ * on real mode access, but using the first entry works well
+ * enough. We also clamp it to 1G to avoid some funky things
+ * such as RTAS bugs etc...
+ */
+ ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000);
+
+ /* Finally limit subsequent allocations */
+ memblock_set_current_limit(ppc64_rma_size);
+}
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 59b208b..742da43 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -237,3 +237,17 @@ void free_initrd_mem(unsigned long start, unsigned long end)
}
#endif
+
+#ifdef CONFIG_8xx /* No 8xx specific .c file to put that in ... */
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 8xx can only access 8MB at the moment */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
+}
+#endif /* CONFIG_8xx */
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 71f1415..9e081ff 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -328,3 +328,4 @@ int __meminit vmemmap_populate(struct page *start_page,
return 0;
}
#endif /* CONFIG_SPARSEMEM_VMEMMAP */
+
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 7d34e17..11571e1 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -271,3 +271,18 @@ void __init MMU_init_hw(void)
if ( ppc_md.progress ) ppc_md.progress("hash:done", 0x205);
}
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 601 can only access 16MB at the moment */
+ if (PVR_VER(mfspr(SPRN_PVR)) == 1)
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01000000));
+ else /* Anything else has 256M mapped */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x10000000));
+}
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 7ba32e7..a086ed5 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -446,4 +446,18 @@ void __cpuinit early_init_mmu_secondary(void)
__early_init_mmu(0);
}
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* On Embedded 64-bit, we adjust the RMA size to match
+ * the bolted TLB entry. We know for now that only 1G
+ * entries are supported though that may eventually
+ * change. We crop it to the size of the first MEMBLOCK to
+ * avoid going over total available memory just in case...
+ */
+ ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000);
+
+ /* Finally limit subsequent allocations */
+ memblock_set_current_limit(ppc64_memblock_base + ppc64_rma_size);
+}
#endif /* CONFIG_PPC64 */
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c4f6e53..71b8edc 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -33,7 +33,6 @@ struct memblock_type {
struct memblock {
unsigned long debug;
- u64 rmo_size;
u64 current_limit;
struct memblock_type memory;
struct memblock_type reserved;
diff --git a/mm/memblock.c b/mm/memblock.c
index 770c5bf..73d903e 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -49,7 +49,6 @@ void memblock_dump_all(void)
return;
pr_info("MEMBLOCK configuration:\n");
- pr_info(" rmo_size = 0x%llx\n", (unsigned long long)memblock.rmo_size);
pr_info(" memory.size = 0x%llx\n", (unsigned long long)memblock.memory.size);
memblock_dump(&memblock.memory, "memory");
@@ -195,10 +194,6 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
long memblock_add(u64 base, u64 size)
{
- /* On pSeries LPAR systems, the first MEMBLOCK is our RMO region. */
- if (base == 0)
- memblock.rmo_size = size;
-
return memblock_add_region(&memblock.memory, base, size);
}
@@ -459,9 +454,6 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
break;
}
- if (memblock.memory.regions[0].size < memblock.rmo_size)
- memblock.rmo_size = memblock.memory.regions[0].size;
-
memory_limit = memblock_end_of_DRAM();
/* And truncate any reserves above the limit also. */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 19/43] memblock: Remove rmo_size, burry it in arch/powerpc where it belongs
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
The RMA (RMO is a misnomer) is a concept specific to ppc64 (in fact
server ppc64 though I hijack it on embedded ppc64 for similar purposes)
and represents the area of memory that can be accessed in real mode
(aka with MMU off), or on embedded, from the exception vectors (which
is bolted in the TLB) which pretty much boils down to the same thing.
We take that out of the generic MEMBLOCK data structure and move it into
arch/powerpc where it belongs, renaming it to "RMA" while at it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/include/asm/mmu.h | 12 ++++++++++++
arch/powerpc/kernel/head_40x.S | 6 +-----
arch/powerpc/kernel/paca.c | 2 +-
arch/powerpc/kernel/prom.c | 29 ++++++++---------------------
arch/powerpc/kernel/rtas.c | 2 +-
arch/powerpc/kernel/setup_64.c | 2 +-
arch/powerpc/mm/40x_mmu.c | 14 +++++++++++++-
arch/powerpc/mm/44x_mmu.c | 14 ++++++++++++++
arch/powerpc/mm/fsl_booke_mmu.c | 9 +++++++++
arch/powerpc/mm/hash_utils_64.c | 22 +++++++++++++++++++++-
arch/powerpc/mm/init_32.c | 14 ++++++++++++++
arch/powerpc/mm/init_64.c | 1 +
arch/powerpc/mm/ppc_mmu_32.c | 15 +++++++++++++++
arch/powerpc/mm/tlb_nohash.c | 14 ++++++++++++++
include/linux/memblock.h | 1 -
mm/memblock.c | 8 --------
16 files changed, 125 insertions(+), 40 deletions(-)
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index 7ebf42e..bb40a06 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -2,6 +2,8 @@
#define _ASM_POWERPC_MMU_H_
#ifdef __KERNEL__
+#include <linux/types.h>
+
#include <asm/asm-compat.h>
#include <asm/feature-fixups.h>
@@ -82,6 +84,16 @@ extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
extern void early_init_mmu(void);
extern void early_init_mmu_secondary(void);
+extern void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size);
+
+#ifdef CONFIG_PPC64
+/* This is our real memory area size on ppc64 server, on embedded, we
+ * make it match the size our of bolted TLB area
+ */
+extern u64 ppc64_rma_size;
+#endif /* CONFIG_PPC64 */
+
#endif /* !__ASSEMBLY__ */
/* The kernel use the constants below to index in the page sizes array.
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index a90625f..8278e8b 100644
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -923,11 +923,7 @@ initial_mmu:
mtspr SPRN_PID,r0
sync
- /* Configure and load two entries into TLB slots 62 and 63.
- * In case we are pinning TLBs, these are reserved in by the
- * other TLB functions. If not reserving, then it doesn't
- * matter where they are loaded.
- */
+ /* Configure and load one entry into TLB slots 63 */
clrrwi r4,r4,10 /* Mask off the real page number */
ori r4,r4,(TLB_WR | TLB_EX) /* Set the write and execute bits */
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 139a773..b9ffd7d 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -117,7 +117,7 @@ void __init allocate_pacas(void)
* the first segment. On iSeries they must be within the area mapped
* by the HV, which is HvPagesToMap * HVPAGESIZE bytes.
*/
- limit = min(0x10000000ULL, memblock.rmo_size);
+ limit = min(0x10000000ULL, ppc64_rma_size);
if (firmware_has_feature(FW_FEATURE_ISERIES))
limit = min(limit, HvPagesToMap * HVPAGESIZE);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 3aec0b9..c3c6a88 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -66,6 +66,7 @@
int __initdata iommu_is_off;
int __initdata iommu_force_on;
unsigned long tce_alloc_start, tce_alloc_end;
+u64 ppc64_rma_size;
#endif
static int __init early_parse_mem(char *p)
@@ -492,7 +493,7 @@ static int __init early_init_dt_scan_memory_ppc(unsigned long node,
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
-#if defined(CONFIG_PPC64)
+#ifdef CONFIG_PPC64
if (iommu_is_off) {
if (base >= 0x80000000ul)
return;
@@ -501,9 +502,13 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
}
#endif
- memblock_add(base, size);
-
+ /* First MEMBLOCK added, do some special initializations */
+ if (memstart_addr == ~(phys_addr_t)0)
+ setup_initial_memory_limit(base, size);
memstart_addr = min((u64)memstart_addr, base);
+
+ /* Add the chunk to the MEMBLOCK list */
+ memblock_add(base, size);
}
u64 __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
@@ -655,22 +660,6 @@ static void __init phyp_dump_reserve_mem(void)
static inline void __init phyp_dump_reserve_mem(void) {}
#endif /* CONFIG_PHYP_DUMP && CONFIG_PPC_RTAS */
-static void set_boot_memory_limit(void)
-{
-#ifdef CONFIG_PPC32
- /* 601 can only access 16MB at the moment */
- if (PVR_VER(mfspr(SPRN_PVR)) == 1)
- memblock_set_current_limit(0x01000000);
- /* 8xx can only access 8MB at the moment */
- else if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
- memblock_set_current_limit(0x00800000);
- else
- memblock_set_current_limit(0x10000000);
-#else
- memblock_set_current_limit(memblock.rmo_size);
-#endif
-}
-
void __init early_init_devtree(void *params)
{
phys_addr_t limit;
@@ -734,8 +723,6 @@ void __init early_init_devtree(void *params)
DBG("Phys. mem: %llx\n", memblock_phys_mem_size());
- set_boot_memory_limit();
-
/* We may need to relocate the flat tree, do it now.
* FIXME .. and the initrd too? */
move_device_tree();
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index d0516db..1662777 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -934,7 +934,7 @@ void __init rtas_initialize(void)
*/
#ifdef CONFIG_PPC64
if (machine_is(pseries) && firmware_has_feature(FW_FEATURE_LPAR)) {
- rtas_region = min(memblock.rmo_size, RTAS_INSTANTIATE_MAX);
+ rtas_region = min(ppc64_rma_size, RTAS_INSTANTIATE_MAX);
ibm_suspend_me_token = rtas_token("ibm,suspend-me");
}
#endif
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index d135f93..4360944 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -487,7 +487,7 @@ static void __init emergency_stack_init(void)
* bringup, we need to get at them in real mode. This means they
* must also be within the RMO region.
*/
- limit = min(slb0_limit(), memblock.rmo_size);
+ limit = min(slb0_limit(), ppc64_rma_size);
for_each_possible_cpu(i) {
unsigned long sp;
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 58969b5..5810967 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -141,7 +141,19 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
* coverage with normal-sized pages (or other reasons) do not
* attempt to allocate outside the allowed range.
*/
- memblock_set_current_limit(memstart_addr + mapped);
+ memblock_set_current_limit(mapped);
return mapped;
}
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 40x can only access 16MB at the moment (see head_40x.S) */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
+}
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index d8c6efb..024acab 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -24,6 +24,8 @@
*/
#include <linux/init.h>
+#include <linux/memblock.h>
+
#include <asm/mmu.h>
#include <asm/system.h>
#include <asm/page.h>
@@ -213,6 +215,18 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
return total_lowmem;
}
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 44x has a 256M TLB entry pinned at boot */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, PPC_PIN_SIZE));
+}
+
#ifdef CONFIG_SMP
void __cpuinit mmu_init_secondary(int cpu)
{
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index e525f86..0be8fe2 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -215,3 +215,12 @@ void __init adjust_total_lowmem(void)
memblock_set_current_limit(memstart_addr + __max_low_memory);
}
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ phys_addr_t limit = first_memblock_base + first_memblock_size;
+
+ /* 64M mapped initially according to head_fsl_booke.S */
+ memblock_set_current_limit(min_t(u64, limit, 0x04000000));
+}
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index b05890e..83f534d 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -649,7 +649,7 @@ static void __init htab_initialize(void)
#ifdef CONFIG_DEBUG_PAGEALLOC
linear_map_hash_count = memblock_end_of_DRAM() >> PAGE_SHIFT;
linear_map_hash_slots = __va(memblock_alloc_base(linear_map_hash_count,
- 1, memblock.rmo_size));
+ 1, ppc64_rma_size));
memset(linear_map_hash_slots, 0, linear_map_hash_count);
#endif /* CONFIG_DEBUG_PAGEALLOC */
@@ -1248,3 +1248,23 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
local_irq_restore(flags);
}
#endif /* CONFIG_DEBUG_PAGEALLOC */
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* On LPAR systems, the first entry is our RMA region,
+ * non-LPAR 64-bit hash MMU systems don't have a limitation
+ * on real mode access, but using the first entry works well
+ * enough. We also clamp it to 1G to avoid some funky things
+ * such as RTAS bugs etc...
+ */
+ ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000);
+
+ /* Finally limit subsequent allocations */
+ memblock_set_current_limit(ppc64_rma_size);
+}
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 59b208b..742da43 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -237,3 +237,17 @@ void free_initrd_mem(unsigned long start, unsigned long end)
}
#endif
+
+#ifdef CONFIG_8xx /* No 8xx specific .c file to put that in ... */
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 8xx can only access 8MB at the moment */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
+}
+#endif /* CONFIG_8xx */
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 71f1415..9e081ff 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -328,3 +328,4 @@ int __meminit vmemmap_populate(struct page *start_page,
return 0;
}
#endif /* CONFIG_SPARSEMEM_VMEMMAP */
+
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 7d34e17..11571e1 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -271,3 +271,18 @@ void __init MMU_init_hw(void)
if ( ppc_md.progress ) ppc_md.progress("hash:done", 0x205);
}
+
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* We don't currently support the first MEMBLOCK not mapping 0
+ * physical on those processors
+ */
+ BUG_ON(first_memblock_base != 0);
+
+ /* 601 can only access 16MB at the moment */
+ if (PVR_VER(mfspr(SPRN_PVR)) == 1)
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01000000));
+ else /* Anything else has 256M mapped */
+ memblock_set_current_limit(min_t(u64, first_memblock_size, 0x10000000));
+}
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 7ba32e7..a086ed5 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -446,4 +446,18 @@ void __cpuinit early_init_mmu_secondary(void)
__early_init_mmu(0);
}
+void setup_initial_memory_limit(phys_addr_t first_memblock_base,
+ phys_addr_t first_memblock_size)
+{
+ /* On Embedded 64-bit, we adjust the RMA size to match
+ * the bolted TLB entry. We know for now that only 1G
+ * entries are supported though that may eventually
+ * change. We crop it to the size of the first MEMBLOCK to
+ * avoid going over total available memory just in case...
+ */
+ ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000);
+
+ /* Finally limit subsequent allocations */
+ memblock_set_current_limit(ppc64_memblock_base + ppc64_rma_size);
+}
#endif /* CONFIG_PPC64 */
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c4f6e53..71b8edc 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -33,7 +33,6 @@ struct memblock_type {
struct memblock {
unsigned long debug;
- u64 rmo_size;
u64 current_limit;
struct memblock_type memory;
struct memblock_type reserved;
diff --git a/mm/memblock.c b/mm/memblock.c
index 770c5bf..73d903e 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -49,7 +49,6 @@ void memblock_dump_all(void)
return;
pr_info("MEMBLOCK configuration:\n");
- pr_info(" rmo_size = 0x%llx\n", (unsigned long long)memblock.rmo_size);
pr_info(" memory.size = 0x%llx\n", (unsigned long long)memblock.memory.size);
memblock_dump(&memblock.memory, "memory");
@@ -195,10 +194,6 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
long memblock_add(u64 base, u64 size)
{
- /* On pSeries LPAR systems, the first MEMBLOCK is our RMO region. */
- if (base == 0)
- memblock.rmo_size = size;
-
return memblock_add_region(&memblock.memory, base, size);
}
@@ -459,9 +454,6 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
break;
}
- if (memblock.memory.regions[0].size < memblock.rmo_size)
- memblock.rmo_size = memblock.memory.regions[0].size;
-
memory_limit = memblock_end_of_DRAM();
/* And truncate any reserves above the limit also. */
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 20/43] memblock: Change u64 to phys_addr_t
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Let's not waste space and cycles on archs that don't support >32-bit
physical address space.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 48 +++++++++---------
mm/memblock.c | 118 +++++++++++++++++++++++----------------------
2 files changed, 84 insertions(+), 82 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 71b8edc..b65045a 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -21,19 +21,19 @@
#define MAX_MEMBLOCK_REGIONS 128
struct memblock_region {
- u64 base;
- u64 size;
+ phys_addr_t base;
+ phys_addr_t size;
};
struct memblock_type {
unsigned long cnt;
- u64 size;
+ phys_addr_t size;
struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
};
struct memblock {
unsigned long debug;
- u64 current_limit;
+ phys_addr_t current_limit;
struct memblock_type memory;
struct memblock_type reserved;
};
@@ -42,34 +42,34 @@ extern struct memblock memblock;
extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
-extern long memblock_add(u64 base, u64 size);
-extern long memblock_remove(u64 base, u64 size);
-extern long __init memblock_free(u64 base, u64 size);
-extern long __init memblock_reserve(u64 base, u64 size);
+extern long memblock_add(phys_addr_t base, phys_addr_t size);
+extern long memblock_remove(phys_addr_t base, phys_addr_t size);
+extern long __init memblock_free(phys_addr_t base, phys_addr_t size);
+extern long __init memblock_reserve(phys_addr_t base, phys_addr_t size);
-extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
-extern u64 __init memblock_alloc(u64 size, u64 align);
+extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
+extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
-#define MEMBLOCK_ALLOC_ANYWHERE (~(u64)0)
+#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
#define MEMBLOCK_ALLOC_ACCESSIBLE 0
-extern u64 __init memblock_alloc_base(u64 size,
- u64, u64 max_addr);
-extern u64 __init __memblock_alloc_base(u64 size,
- u64 align, u64 max_addr);
-extern u64 __init memblock_phys_mem_size(void);
-extern u64 memblock_end_of_DRAM(void);
-extern void __init memblock_enforce_memory_limit(u64 memory_limit);
-extern int memblock_is_memory(u64 addr);
-extern int memblock_is_region_memory(u64 base, u64 size);
-extern int __init memblock_is_reserved(u64 addr);
-extern int memblock_is_region_reserved(u64 base, u64 size);
+extern phys_addr_t __init memblock_alloc_base(phys_addr_t size,
+ phys_addr_t, phys_addr_t max_addr);
+extern phys_addr_t __init __memblock_alloc_base(phys_addr_t size,
+ phys_addr_t align, phys_addr_t max_addr);
+extern phys_addr_t __init memblock_phys_mem_size(void);
+extern phys_addr_t memblock_end_of_DRAM(void);
+extern void __init memblock_enforce_memory_limit(phys_addr_t memory_limit);
+extern int memblock_is_memory(phys_addr_t addr);
+extern int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
+extern int __init memblock_is_reserved(phys_addr_t addr);
+extern int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
extern void memblock_dump_all(void);
/* Provided by the architecture */
-extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
+extern phys_addr_t memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid);
/**
* memblock_set_current_limit - Set the current allocation limit to allow
@@ -77,7 +77,7 @@ extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
* accessible during boot
* @limit: New limit value (physical address)
*/
-extern void memblock_set_current_limit(u64 limit);
+extern void memblock_set_current_limit(phys_addr_t limit);
/*
diff --git a/mm/memblock.c b/mm/memblock.c
index 73d903e..81da635 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -55,13 +55,14 @@ void memblock_dump_all(void)
memblock_dump(&memblock.reserved, "reserved");
}
-static unsigned long memblock_addrs_overlap(u64 base1, u64 size1, u64 base2,
- u64 size2)
+static unsigned long memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
+ phys_addr_t base2, phys_addr_t size2)
{
return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
}
-static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
+static long memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
+ phys_addr_t base2, phys_addr_t size2)
{
if (base2 == base1 + size1)
return 1;
@@ -72,12 +73,12 @@ static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
}
static long memblock_regions_adjacent(struct memblock_type *type,
- unsigned long r1, unsigned long r2)
+ unsigned long r1, unsigned long r2)
{
- u64 base1 = type->regions[r1].base;
- u64 size1 = type->regions[r1].size;
- u64 base2 = type->regions[r2].base;
- u64 size2 = type->regions[r2].size;
+ phys_addr_t base1 = type->regions[r1].base;
+ phys_addr_t size1 = type->regions[r1].size;
+ phys_addr_t base2 = type->regions[r2].base;
+ phys_addr_t size2 = type->regions[r2].size;
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
@@ -128,7 +129,7 @@ void __init memblock_analyze(void)
memblock.memory.size += memblock.memory.regions[i].size;
}
-static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
+static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
long adjacent, i;
@@ -141,8 +142,8 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
/* First try and coalesce this MEMBLOCK with another. */
for (i = 0; i < type->cnt; i++) {
- u64 rgnbase = type->regions[i].base;
- u64 rgnsize = type->regions[i].size;
+ phys_addr_t rgnbase = type->regions[i].base;
+ phys_addr_t rgnsize = type->regions[i].size;
if ((rgnbase == base) && (rgnsize == size))
/* Already have this region, so we're done */
@@ -192,16 +193,16 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
return 0;
}
-long memblock_add(u64 base, u64 size)
+long memblock_add(phys_addr_t base, phys_addr_t size)
{
return memblock_add_region(&memblock.memory, base, size);
}
-static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
+static long __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
- u64 rgnbegin, rgnend;
- u64 end = base + size;
+ phys_addr_t rgnbegin, rgnend;
+ phys_addr_t end = base + size;
int i;
rgnbegin = rgnend = 0; /* supress gcc warnings */
@@ -246,17 +247,17 @@ static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
return memblock_add_region(type, end, rgnend - end);
}
-long memblock_remove(u64 base, u64 size)
+long memblock_remove(phys_addr_t base, phys_addr_t size)
{
return __memblock_remove(&memblock.memory, base, size);
}
-long __init memblock_free(u64 base, u64 size)
+long __init memblock_free(phys_addr_t base, phys_addr_t size)
{
return __memblock_remove(&memblock.reserved, base, size);
}
-long __init memblock_reserve(u64 base, u64 size)
+long __init memblock_reserve(phys_addr_t base, phys_addr_t size)
{
struct memblock_type *_rgn = &memblock.reserved;
@@ -265,13 +266,13 @@ long __init memblock_reserve(u64 base, u64 size)
return memblock_add_region(_rgn, base, size);
}
-long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
+long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long i;
for (i = 0; i < type->cnt; i++) {
- u64 rgnbase = type->regions[i].base;
- u64 rgnsize = type->regions[i].size;
+ phys_addr_t rgnbase = type->regions[i].base;
+ phys_addr_t rgnsize = type->regions[i].size;
if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
break;
}
@@ -279,20 +280,20 @@ long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
return (i < type->cnt) ? i : -1;
}
-static u64 memblock_align_down(u64 addr, u64 size)
+static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
{
return addr & ~(size - 1);
}
-static u64 memblock_align_up(u64 addr, u64 size)
+static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
{
return (addr + (size - 1)) & ~(size - 1);
}
-static u64 __init memblock_alloc_region(u64 start, u64 end,
- u64 size, u64 align)
+static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t end,
+ phys_addr_t size, phys_addr_t align)
{
- u64 base, res_base;
+ phys_addr_t base, res_base;
long j;
base = memblock_align_down((end - size), align);
@@ -301,7 +302,7 @@ static u64 __init memblock_alloc_region(u64 start, u64 end,
if (j < 0) {
/* this area isn't reserved, take it */
if (memblock_add_region(&memblock.reserved, base, size) < 0)
- base = ~(u64)0;
+ base = ~(phys_addr_t)0;
return base;
}
res_base = memblock.reserved.regions[j].base;
@@ -310,42 +311,43 @@ static u64 __init memblock_alloc_region(u64 start, u64 end,
base = memblock_align_down(res_base - size, align);
}
- return ~(u64)0;
+ return ~(phys_addr_t)0;
}
-u64 __weak __init memblock_nid_range(u64 start, u64 end, int *nid)
+phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
{
*nid = 0;
return end;
}
-static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
- u64 size, u64 align, int nid)
+static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
+ phys_addr_t size,
+ phys_addr_t align, int nid)
{
- u64 start, end;
+ phys_addr_t start, end;
start = mp->base;
end = start + mp->size;
start = memblock_align_up(start, align);
while (start < end) {
- u64 this_end;
+ phys_addr_t this_end;
int this_nid;
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
- u64 ret = memblock_alloc_region(start, this_end, size, align);
- if (ret != ~(u64)0)
+ phys_addr_t ret = memblock_alloc_region(start, this_end, size, align);
+ if (ret != ~(phys_addr_t)0)
return ret;
}
start = this_end;
}
- return ~(u64)0;
+ return ~(phys_addr_t)0;
}
-u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
+phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
{
struct memblock_type *mem = &memblock.memory;
int i;
@@ -359,23 +361,23 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
size = memblock_align_up(size, align);
for (i = 0; i < mem->cnt; i++) {
- u64 ret = memblock_alloc_nid_region(&mem->regions[i],
+ phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
size, align, nid);
- if (ret != ~(u64)0)
+ if (ret != ~(phys_addr_t)0)
return ret;
}
return memblock_alloc(size, align);
}
-u64 __init memblock_alloc(u64 size, u64 align)
+phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
{
return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
}
-u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
- u64 alloc;
+ phys_addr_t alloc;
alloc = __memblock_alloc_base(size, align, max_addr);
@@ -386,11 +388,11 @@ u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
return alloc;
}
-u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
long i;
- u64 base = 0;
- u64 res_base;
+ phys_addr_t base = 0;
+ phys_addr_t res_base;
BUG_ON(0 == size);
@@ -405,26 +407,26 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
* top of memory
*/
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
- u64 memblockbase = memblock.memory.regions[i].base;
- u64 memblocksize = memblock.memory.regions[i].size;
+ phys_addr_t memblockbase = memblock.memory.regions[i].base;
+ phys_addr_t memblocksize = memblock.memory.regions[i].size;
if (memblocksize < size)
continue;
base = min(memblockbase + memblocksize, max_addr);
res_base = memblock_alloc_region(memblockbase, base, size, align);
- if (res_base != ~(u64)0)
+ if (res_base != ~(phys_addr_t)0)
return res_base;
}
return 0;
}
/* You must call memblock_analyze() before this. */
-u64 __init memblock_phys_mem_size(void)
+phys_addr_t __init memblock_phys_mem_size(void)
{
return memblock.memory.size;
}
-u64 memblock_end_of_DRAM(void)
+phys_addr_t memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;
@@ -432,10 +434,10 @@ u64 memblock_end_of_DRAM(void)
}
/* You must call memblock_analyze() after this. */
-void __init memblock_enforce_memory_limit(u64 memory_limit)
+void __init memblock_enforce_memory_limit(phys_addr_t memory_limit)
{
unsigned long i;
- u64 limit;
+ phys_addr_t limit;
struct memblock_region *p;
if (!memory_limit)
@@ -472,7 +474,7 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
}
}
-static int memblock_search(struct memblock_type *type, u64 addr)
+static int memblock_search(struct memblock_type *type, phys_addr_t addr)
{
unsigned int left = 0, right = type->cnt;
@@ -490,17 +492,17 @@ static int memblock_search(struct memblock_type *type, u64 addr)
return -1;
}
-int __init memblock_is_reserved(u64 addr)
+int __init memblock_is_reserved(phys_addr_t addr)
{
return memblock_search(&memblock.reserved, addr) != -1;
}
-int memblock_is_memory(u64 addr)
+int memblock_is_memory(phys_addr_t addr)
{
return memblock_search(&memblock.memory, addr) != -1;
}
-int memblock_is_region_memory(u64 base, u64 size)
+int memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
{
int idx = memblock_search(&memblock.reserved, base);
@@ -511,13 +513,13 @@ int memblock_is_region_memory(u64 base, u64 size)
memblock.reserved.regions[idx].size) >= (base + size);
}
-int memblock_is_region_reserved(u64 base, u64 size)
+int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size)
{
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
-void __init memblock_set_current_limit(u64 limit)
+void __init memblock_set_current_limit(phys_addr_t limit)
{
memblock.current_limit = limit;
}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 20/43] memblock: Change u64 to phys_addr_t
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Let's not waste space and cycles on archs that don't support >32-bit
physical address space.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 48 +++++++++---------
mm/memblock.c | 118 +++++++++++++++++++++++----------------------
2 files changed, 84 insertions(+), 82 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 71b8edc..b65045a 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -21,19 +21,19 @@
#define MAX_MEMBLOCK_REGIONS 128
struct memblock_region {
- u64 base;
- u64 size;
+ phys_addr_t base;
+ phys_addr_t size;
};
struct memblock_type {
unsigned long cnt;
- u64 size;
+ phys_addr_t size;
struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
};
struct memblock {
unsigned long debug;
- u64 current_limit;
+ phys_addr_t current_limit;
struct memblock_type memory;
struct memblock_type reserved;
};
@@ -42,34 +42,34 @@ extern struct memblock memblock;
extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
-extern long memblock_add(u64 base, u64 size);
-extern long memblock_remove(u64 base, u64 size);
-extern long __init memblock_free(u64 base, u64 size);
-extern long __init memblock_reserve(u64 base, u64 size);
+extern long memblock_add(phys_addr_t base, phys_addr_t size);
+extern long memblock_remove(phys_addr_t base, phys_addr_t size);
+extern long __init memblock_free(phys_addr_t base, phys_addr_t size);
+extern long __init memblock_reserve(phys_addr_t base, phys_addr_t size);
-extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid);
-extern u64 __init memblock_alloc(u64 size, u64 align);
+extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
+extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
-#define MEMBLOCK_ALLOC_ANYWHERE (~(u64)0)
+#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
#define MEMBLOCK_ALLOC_ACCESSIBLE 0
-extern u64 __init memblock_alloc_base(u64 size,
- u64, u64 max_addr);
-extern u64 __init __memblock_alloc_base(u64 size,
- u64 align, u64 max_addr);
-extern u64 __init memblock_phys_mem_size(void);
-extern u64 memblock_end_of_DRAM(void);
-extern void __init memblock_enforce_memory_limit(u64 memory_limit);
-extern int memblock_is_memory(u64 addr);
-extern int memblock_is_region_memory(u64 base, u64 size);
-extern int __init memblock_is_reserved(u64 addr);
-extern int memblock_is_region_reserved(u64 base, u64 size);
+extern phys_addr_t __init memblock_alloc_base(phys_addr_t size,
+ phys_addr_t, phys_addr_t max_addr);
+extern phys_addr_t __init __memblock_alloc_base(phys_addr_t size,
+ phys_addr_t align, phys_addr_t max_addr);
+extern phys_addr_t __init memblock_phys_mem_size(void);
+extern phys_addr_t memblock_end_of_DRAM(void);
+extern void __init memblock_enforce_memory_limit(phys_addr_t memory_limit);
+extern int memblock_is_memory(phys_addr_t addr);
+extern int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
+extern int __init memblock_is_reserved(phys_addr_t addr);
+extern int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
extern void memblock_dump_all(void);
/* Provided by the architecture */
-extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
+extern phys_addr_t memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid);
/**
* memblock_set_current_limit - Set the current allocation limit to allow
@@ -77,7 +77,7 @@ extern u64 memblock_nid_range(u64 start, u64 end, int *nid);
* accessible during boot
* @limit: New limit value (physical address)
*/
-extern void memblock_set_current_limit(u64 limit);
+extern void memblock_set_current_limit(phys_addr_t limit);
/*
diff --git a/mm/memblock.c b/mm/memblock.c
index 73d903e..81da635 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -55,13 +55,14 @@ void memblock_dump_all(void)
memblock_dump(&memblock.reserved, "reserved");
}
-static unsigned long memblock_addrs_overlap(u64 base1, u64 size1, u64 base2,
- u64 size2)
+static unsigned long memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
+ phys_addr_t base2, phys_addr_t size2)
{
return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
}
-static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
+static long memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
+ phys_addr_t base2, phys_addr_t size2)
{
if (base2 == base1 + size1)
return 1;
@@ -72,12 +73,12 @@ static long memblock_addrs_adjacent(u64 base1, u64 size1, u64 base2, u64 size2)
}
static long memblock_regions_adjacent(struct memblock_type *type,
- unsigned long r1, unsigned long r2)
+ unsigned long r1, unsigned long r2)
{
- u64 base1 = type->regions[r1].base;
- u64 size1 = type->regions[r1].size;
- u64 base2 = type->regions[r2].base;
- u64 size2 = type->regions[r2].size;
+ phys_addr_t base1 = type->regions[r1].base;
+ phys_addr_t size1 = type->regions[r1].size;
+ phys_addr_t base2 = type->regions[r2].base;
+ phys_addr_t size2 = type->regions[r2].size;
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
@@ -128,7 +129,7 @@ void __init memblock_analyze(void)
memblock.memory.size += memblock.memory.regions[i].size;
}
-static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
+static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
long adjacent, i;
@@ -141,8 +142,8 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
/* First try and coalesce this MEMBLOCK with another. */
for (i = 0; i < type->cnt; i++) {
- u64 rgnbase = type->regions[i].base;
- u64 rgnsize = type->regions[i].size;
+ phys_addr_t rgnbase = type->regions[i].base;
+ phys_addr_t rgnsize = type->regions[i].size;
if ((rgnbase == base) && (rgnsize == size))
/* Already have this region, so we're done */
@@ -192,16 +193,16 @@ static long memblock_add_region(struct memblock_type *type, u64 base, u64 size)
return 0;
}
-long memblock_add(u64 base, u64 size)
+long memblock_add(phys_addr_t base, phys_addr_t size)
{
return memblock_add_region(&memblock.memory, base, size);
}
-static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
+static long __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
- u64 rgnbegin, rgnend;
- u64 end = base + size;
+ phys_addr_t rgnbegin, rgnend;
+ phys_addr_t end = base + size;
int i;
rgnbegin = rgnend = 0; /* supress gcc warnings */
@@ -246,17 +247,17 @@ static long __memblock_remove(struct memblock_type *type, u64 base, u64 size)
return memblock_add_region(type, end, rgnend - end);
}
-long memblock_remove(u64 base, u64 size)
+long memblock_remove(phys_addr_t base, phys_addr_t size)
{
return __memblock_remove(&memblock.memory, base, size);
}
-long __init memblock_free(u64 base, u64 size)
+long __init memblock_free(phys_addr_t base, phys_addr_t size)
{
return __memblock_remove(&memblock.reserved, base, size);
}
-long __init memblock_reserve(u64 base, u64 size)
+long __init memblock_reserve(phys_addr_t base, phys_addr_t size)
{
struct memblock_type *_rgn = &memblock.reserved;
@@ -265,13 +266,13 @@ long __init memblock_reserve(u64 base, u64 size)
return memblock_add_region(_rgn, base, size);
}
-long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
+long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long i;
for (i = 0; i < type->cnt; i++) {
- u64 rgnbase = type->regions[i].base;
- u64 rgnsize = type->regions[i].size;
+ phys_addr_t rgnbase = type->regions[i].base;
+ phys_addr_t rgnsize = type->regions[i].size;
if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
break;
}
@@ -279,20 +280,20 @@ long memblock_overlaps_region(struct memblock_type *type, u64 base, u64 size)
return (i < type->cnt) ? i : -1;
}
-static u64 memblock_align_down(u64 addr, u64 size)
+static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
{
return addr & ~(size - 1);
}
-static u64 memblock_align_up(u64 addr, u64 size)
+static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
{
return (addr + (size - 1)) & ~(size - 1);
}
-static u64 __init memblock_alloc_region(u64 start, u64 end,
- u64 size, u64 align)
+static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t end,
+ phys_addr_t size, phys_addr_t align)
{
- u64 base, res_base;
+ phys_addr_t base, res_base;
long j;
base = memblock_align_down((end - size), align);
@@ -301,7 +302,7 @@ static u64 __init memblock_alloc_region(u64 start, u64 end,
if (j < 0) {
/* this area isn't reserved, take it */
if (memblock_add_region(&memblock.reserved, base, size) < 0)
- base = ~(u64)0;
+ base = ~(phys_addr_t)0;
return base;
}
res_base = memblock.reserved.regions[j].base;
@@ -310,42 +311,43 @@ static u64 __init memblock_alloc_region(u64 start, u64 end,
base = memblock_align_down(res_base - size, align);
}
- return ~(u64)0;
+ return ~(phys_addr_t)0;
}
-u64 __weak __init memblock_nid_range(u64 start, u64 end, int *nid)
+phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
{
*nid = 0;
return end;
}
-static u64 __init memblock_alloc_nid_region(struct memblock_region *mp,
- u64 size, u64 align, int nid)
+static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
+ phys_addr_t size,
+ phys_addr_t align, int nid)
{
- u64 start, end;
+ phys_addr_t start, end;
start = mp->base;
end = start + mp->size;
start = memblock_align_up(start, align);
while (start < end) {
- u64 this_end;
+ phys_addr_t this_end;
int this_nid;
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
- u64 ret = memblock_alloc_region(start, this_end, size, align);
- if (ret != ~(u64)0)
+ phys_addr_t ret = memblock_alloc_region(start, this_end, size, align);
+ if (ret != ~(phys_addr_t)0)
return ret;
}
start = this_end;
}
- return ~(u64)0;
+ return ~(phys_addr_t)0;
}
-u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
+phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
{
struct memblock_type *mem = &memblock.memory;
int i;
@@ -359,23 +361,23 @@ u64 __init memblock_alloc_nid(u64 size, u64 align, int nid)
size = memblock_align_up(size, align);
for (i = 0; i < mem->cnt; i++) {
- u64 ret = memblock_alloc_nid_region(&mem->regions[i],
+ phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
size, align, nid);
- if (ret != ~(u64)0)
+ if (ret != ~(phys_addr_t)0)
return ret;
}
return memblock_alloc(size, align);
}
-u64 __init memblock_alloc(u64 size, u64 align)
+phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
{
return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
}
-u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
- u64 alloc;
+ phys_addr_t alloc;
alloc = __memblock_alloc_base(size, align, max_addr);
@@ -386,11 +388,11 @@ u64 __init memblock_alloc_base(u64 size, u64 align, u64 max_addr)
return alloc;
}
-u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
+phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
long i;
- u64 base = 0;
- u64 res_base;
+ phys_addr_t base = 0;
+ phys_addr_t res_base;
BUG_ON(0 == size);
@@ -405,26 +407,26 @@ u64 __init __memblock_alloc_base(u64 size, u64 align, u64 max_addr)
* top of memory
*/
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
- u64 memblockbase = memblock.memory.regions[i].base;
- u64 memblocksize = memblock.memory.regions[i].size;
+ phys_addr_t memblockbase = memblock.memory.regions[i].base;
+ phys_addr_t memblocksize = memblock.memory.regions[i].size;
if (memblocksize < size)
continue;
base = min(memblockbase + memblocksize, max_addr);
res_base = memblock_alloc_region(memblockbase, base, size, align);
- if (res_base != ~(u64)0)
+ if (res_base != ~(phys_addr_t)0)
return res_base;
}
return 0;
}
/* You must call memblock_analyze() before this. */
-u64 __init memblock_phys_mem_size(void)
+phys_addr_t __init memblock_phys_mem_size(void)
{
return memblock.memory.size;
}
-u64 memblock_end_of_DRAM(void)
+phys_addr_t memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;
@@ -432,10 +434,10 @@ u64 memblock_end_of_DRAM(void)
}
/* You must call memblock_analyze() after this. */
-void __init memblock_enforce_memory_limit(u64 memory_limit)
+void __init memblock_enforce_memory_limit(phys_addr_t memory_limit)
{
unsigned long i;
- u64 limit;
+ phys_addr_t limit;
struct memblock_region *p;
if (!memory_limit)
@@ -472,7 +474,7 @@ void __init memblock_enforce_memory_limit(u64 memory_limit)
}
}
-static int memblock_search(struct memblock_type *type, u64 addr)
+static int memblock_search(struct memblock_type *type, phys_addr_t addr)
{
unsigned int left = 0, right = type->cnt;
@@ -490,17 +492,17 @@ static int memblock_search(struct memblock_type *type, u64 addr)
return -1;
}
-int __init memblock_is_reserved(u64 addr)
+int __init memblock_is_reserved(phys_addr_t addr)
{
return memblock_search(&memblock.reserved, addr) != -1;
}
-int memblock_is_memory(u64 addr)
+int memblock_is_memory(phys_addr_t addr)
{
return memblock_search(&memblock.memory, addr) != -1;
}
-int memblock_is_region_memory(u64 base, u64 size)
+int memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
{
int idx = memblock_search(&memblock.reserved, base);
@@ -511,13 +513,13 @@ int memblock_is_region_memory(u64 base, u64 size)
memblock.reserved.regions[idx].size) >= (base + size);
}
-int memblock_is_region_reserved(u64 base, u64 size)
+int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size)
{
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
-void __init memblock_set_current_limit(u64 limit)
+void __init memblock_set_current_limit(phys_addr_t limit)
{
memblock.current_limit = limit;
}
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 21/43] memblock: Remove unused memblock.debug struct member
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index b65045a..0fe6dd5 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -32,7 +32,6 @@ struct memblock_type {
};
struct memblock {
- unsigned long debug;
phys_addr_t current_limit;
struct memblock_type memory;
struct memblock_type reserved;
@@ -55,9 +54,11 @@ extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
#define MEMBLOCK_ALLOC_ACCESSIBLE 0
extern phys_addr_t __init memblock_alloc_base(phys_addr_t size,
- phys_addr_t, phys_addr_t max_addr);
+ phys_addr_t align,
+ phys_addr_t max_addr);
extern phys_addr_t __init __memblock_alloc_base(phys_addr_t size,
- phys_addr_t align, phys_addr_t max_addr);
+ phys_addr_t align,
+ phys_addr_t max_addr);
extern phys_addr_t __init memblock_phys_mem_size(void);
extern phys_addr_t memblock_end_of_DRAM(void);
extern void __init memblock_enforce_memory_limit(phys_addr_t memory_limit);
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 21/43] memblock: Remove unused memblock.debug struct member
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index b65045a..0fe6dd5 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -32,7 +32,6 @@ struct memblock_type {
};
struct memblock {
- unsigned long debug;
phys_addr_t current_limit;
struct memblock_type memory;
struct memblock_type reserved;
@@ -55,9 +54,11 @@ extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
#define MEMBLOCK_ALLOC_ACCESSIBLE 0
extern phys_addr_t __init memblock_alloc_base(phys_addr_t size,
- phys_addr_t, phys_addr_t max_addr);
+ phys_addr_t align,
+ phys_addr_t max_addr);
extern phys_addr_t __init __memblock_alloc_base(phys_addr_t size,
- phys_addr_t align, phys_addr_t max_addr);
+ phys_addr_t align,
+ phys_addr_t max_addr);
extern phys_addr_t __init memblock_phys_mem_size(void);
extern phys_addr_t memblock_end_of_DRAM(void);
extern void __init memblock_enforce_memory_limit(phys_addr_t memory_limit);
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 22/43] memblock: Remove memblock_type.size and add memblock.memory_size instead
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Right now, both the "memory" and "reserved" memblock_type structures have
a "size" member. It represents the calculated memory size in the former
case and is unused in the latter.
This moves it out to the main memblock structure instead
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/mm/mem.c | 2 +-
include/linux/memblock.h | 2 +-
mm/memblock.c | 8 ++++----
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 52df542..f661f6c 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -301,7 +301,7 @@ void __init mem_init(void)
swiotlb_init(1);
#endif
- num_physpages = memblock.memory.size >> PAGE_SHIFT;
+ num_physpages = memblock_phys_mem_size() >> PAGE_SHIFT;
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
#ifdef CONFIG_NEED_MULTIPLE_NODES
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 0fe6dd5..c9c7b0f 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -27,12 +27,12 @@ struct memblock_region {
struct memblock_type {
unsigned long cnt;
- phys_addr_t size;
struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
};
struct memblock {
phys_addr_t current_limit;
+ phys_addr_t memory_size; /* Updated by memblock_analyze() */
struct memblock_type memory;
struct memblock_type reserved;
};
diff --git a/mm/memblock.c b/mm/memblock.c
index 81da635..5ae413e 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -49,7 +49,7 @@ void memblock_dump_all(void)
return;
pr_info("MEMBLOCK configuration:\n");
- pr_info(" memory.size = 0x%llx\n", (unsigned long long)memblock.memory.size);
+ pr_info(" memory size = 0x%llx\n", (unsigned long long)memblock.memory_size);
memblock_dump(&memblock.memory, "memory");
memblock_dump(&memblock.reserved, "reserved");
@@ -123,10 +123,10 @@ void __init memblock_analyze(void)
{
int i;
- memblock.memory.size = 0;
+ memblock.memory_size = 0;
for (i = 0; i < memblock.memory.cnt; i++)
- memblock.memory.size += memblock.memory.regions[i].size;
+ memblock.memory_size += memblock.memory.regions[i].size;
}
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
@@ -423,7 +423,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
- return memblock.memory.size;
+ return memblock.memory_size;
}
phys_addr_t memblock_end_of_DRAM(void)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 22/43] memblock: Remove memblock_type.size and add memblock.memory_size instead
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Right now, both the "memory" and "reserved" memblock_type structures have
a "size" member. It represents the calculated memory size in the former
case and is unused in the latter.
This moves it out to the main memblock structure instead
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/mm/mem.c | 2 +-
include/linux/memblock.h | 2 +-
mm/memblock.c | 8 ++++----
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 52df542..f661f6c 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -301,7 +301,7 @@ void __init mem_init(void)
swiotlb_init(1);
#endif
- num_physpages = memblock.memory.size >> PAGE_SHIFT;
+ num_physpages = memblock_phys_mem_size() >> PAGE_SHIFT;
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
#ifdef CONFIG_NEED_MULTIPLE_NODES
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 0fe6dd5..c9c7b0f 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -27,12 +27,12 @@ struct memblock_region {
struct memblock_type {
unsigned long cnt;
- phys_addr_t size;
struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
};
struct memblock {
phys_addr_t current_limit;
+ phys_addr_t memory_size; /* Updated by memblock_analyze() */
struct memblock_type memory;
struct memblock_type reserved;
};
diff --git a/mm/memblock.c b/mm/memblock.c
index 81da635..5ae413e 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -49,7 +49,7 @@ void memblock_dump_all(void)
return;
pr_info("MEMBLOCK configuration:\n");
- pr_info(" memory.size = 0x%llx\n", (unsigned long long)memblock.memory.size);
+ pr_info(" memory size = 0x%llx\n", (unsigned long long)memblock.memory_size);
memblock_dump(&memblock.memory, "memory");
memblock_dump(&memblock.reserved, "reserved");
@@ -123,10 +123,10 @@ void __init memblock_analyze(void)
{
int i;
- memblock.memory.size = 0;
+ memblock.memory_size = 0;
for (i = 0; i < memblock.memory.cnt; i++)
- memblock.memory.size += memblock.memory.regions[i].size;
+ memblock.memory_size += memblock.memory.regions[i].size;
}
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
@@ -423,7 +423,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
- return memblock.memory.size;
+ return memblock.memory_size;
}
phys_addr_t memblock_end_of_DRAM(void)
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 23/43] memblock: Move memblock arrays to static storage in memblock.c and make their size a variable
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This is in preparation for having resizable arrays.
Note that we still allocate one more than needed, this is unchanged from
the previous implementation.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 7 ++++---
mm/memblock.c | 10 +++++++++-
2 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c9c7b0f..150be93 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -18,7 +18,7 @@
#include <asm/memblock.h>
-#define MAX_MEMBLOCK_REGIONS 128
+#define INIT_MEMBLOCK_REGIONS 128
struct memblock_region {
phys_addr_t base;
@@ -26,8 +26,9 @@ struct memblock_region {
};
struct memblock_type {
- unsigned long cnt;
- struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
+ unsigned long cnt; /* number of regions */
+ unsigned long max; /* size of the allocated array */
+ struct memblock_region *regions;
};
struct memblock {
diff --git a/mm/memblock.c b/mm/memblock.c
index 5ae413e..3c47450 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -18,6 +18,8 @@
struct memblock memblock;
static int memblock_debug;
+static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
+static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static int __init early_memblock(char *p)
{
@@ -104,6 +106,12 @@ static void memblock_coalesce_regions(struct memblock_type *type,
void __init memblock_init(void)
{
+ /* Hookup the initial arrays */
+ memblock.memory.regions = memblock_memory_init_regions;
+ memblock.memory.max = INIT_MEMBLOCK_REGIONS;
+ memblock.reserved.regions = memblock_reserved_init_regions;
+ memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
+
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
*/
@@ -169,7 +177,7 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
if (coalesced)
return coalesced;
- if (type->cnt >= MAX_MEMBLOCK_REGIONS)
+ if (type->cnt >= type->max)
return -1;
/* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 23/43] memblock: Move memblock arrays to static storage in memblock.c and make their size a variable
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This is in preparation for having resizable arrays.
Note that we still allocate one more than needed, this is unchanged from
the previous implementation.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 7 ++++---
mm/memblock.c | 10 +++++++++-
2 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c9c7b0f..150be93 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -18,7 +18,7 @@
#include <asm/memblock.h>
-#define MAX_MEMBLOCK_REGIONS 128
+#define INIT_MEMBLOCK_REGIONS 128
struct memblock_region {
phys_addr_t base;
@@ -26,8 +26,9 @@ struct memblock_region {
};
struct memblock_type {
- unsigned long cnt;
- struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
+ unsigned long cnt; /* number of regions */
+ unsigned long max; /* size of the allocated array */
+ struct memblock_region *regions;
};
struct memblock {
diff --git a/mm/memblock.c b/mm/memblock.c
index 5ae413e..3c47450 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -18,6 +18,8 @@
struct memblock memblock;
static int memblock_debug;
+static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
+static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static int __init early_memblock(char *p)
{
@@ -104,6 +106,12 @@ static void memblock_coalesce_regions(struct memblock_type *type,
void __init memblock_init(void)
{
+ /* Hookup the initial arrays */
+ memblock.memory.regions = memblock_memory_init_regions;
+ memblock.memory.max = INIT_MEMBLOCK_REGIONS;
+ memblock.reserved.regions = memblock_reserved_init_regions;
+ memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
+
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
*/
@@ -169,7 +177,7 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
if (coalesced)
return coalesced;
- if (type->cnt >= MAX_MEMBLOCK_REGIONS)
+ if (type->cnt >= type->max)
return -1;
/* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 24/43] memblock: Add debug markers at the end of the array
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Since we allocate one more than needed, why not do a bit of sanity checking
here to ensure we don't walk past the end of the array ?
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 3c47450..a925866 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/bitops.h>
+#include <linux/poison.h>
#include <linux/memblock.h>
struct memblock memblock;
@@ -112,6 +113,10 @@ void __init memblock_init(void)
memblock.reserved.regions = memblock_reserved_init_regions;
memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
+ /* Write a marker in the unused last array entry */
+ memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+ memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
*/
@@ -131,6 +136,12 @@ void __init memblock_analyze(void)
{
int i;
+ /* Check marker in the unused last array entry */
+ WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+ WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+
memblock.memory_size = 0;
for (i = 0; i < memblock.memory.cnt; i++)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 24/43] memblock: Add debug markers at the end of the array
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Since we allocate one more than needed, why not do a bit of sanity checking
here to ensure we don't walk past the end of the array ?
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 3c47450..a925866 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/bitops.h>
+#include <linux/poison.h>
#include <linux/memblock.h>
struct memblock memblock;
@@ -112,6 +113,10 @@ void __init memblock_init(void)
memblock.reserved.regions = memblock_reserved_init_regions;
memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
+ /* Write a marker in the unused last array entry */
+ memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+ memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
*/
@@ -131,6 +136,12 @@ void __init memblock_analyze(void)
{
int i;
+ /* Check marker in the unused last array entry */
+ WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+ WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+
memblock.memory_size = 0;
for (i = 0; i < memblock.memory.cnt; i++)
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 25/43] memblock: Make memblock_find_region() out of memblock_alloc_region()
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This function will be used to locate a free area to put the new memblock
arrays when attempting to resize them. memblock_alloc_region() is gone,
the two callsites now call memblock_add_region().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
v2. Fix membase_alloc_nid_region() conversion
---
mm/memblock.c | 20 +++++++++-----------
1 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index a925866..c1d2060 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -309,8 +309,8 @@ static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
return (addr + (size - 1)) & ~(size - 1);
}
-static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t end,
- phys_addr_t size, phys_addr_t align)
+static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,
+ phys_addr_t size, phys_addr_t align)
{
phys_addr_t base, res_base;
long j;
@@ -318,12 +318,8 @@ static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t e
base = memblock_align_down((end - size), align);
while (start <= base) {
j = memblock_overlaps_region(&memblock.reserved, base, size);
- if (j < 0) {
- /* this area isn't reserved, take it */
- if (memblock_add_region(&memblock.reserved, base, size) < 0)
- base = ~(phys_addr_t)0;
+ if (j < 0)
return base;
- }
res_base = memblock.reserved.regions[j].base;
if (res_base < size)
break;
@@ -356,8 +352,9 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
- phys_addr_t ret = memblock_alloc_region(start, this_end, size, align);
- if (ret != ~(phys_addr_t)0)
+ phys_addr_t ret = memblock_find_region(start, this_end, size, align);
+ if (ret != ~(phys_addr_t)0 &&
+ memblock_add_region(&memblock.reserved, ret, size) >= 0)
return ret;
}
start = this_end;
@@ -432,8 +429,9 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
if (memblocksize < size)
continue;
base = min(memblockbase + memblocksize, max_addr);
- res_base = memblock_alloc_region(memblockbase, base, size, align);
- if (res_base != ~(phys_addr_t)0)
+ res_base = memblock_find_region(memblockbase, base, size, align);
+ if (res_base != ~(phys_addr_t)0 &&
+ memblock_add_region(&memblock.reserved, res_base, size) >= 0)
return res_base;
}
return 0;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 25/43] memblock: Make memblock_find_region() out of memblock_alloc_region()
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This function will be used to locate a free area to put the new memblock
arrays when attempting to resize them. memblock_alloc_region() is gone,
the two callsites now call memblock_add_region().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
v2. Fix membase_alloc_nid_region() conversion
---
mm/memblock.c | 20 +++++++++-----------
1 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index a925866..c1d2060 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -309,8 +309,8 @@ static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
return (addr + (size - 1)) & ~(size - 1);
}
-static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t end,
- phys_addr_t size, phys_addr_t align)
+static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,
+ phys_addr_t size, phys_addr_t align)
{
phys_addr_t base, res_base;
long j;
@@ -318,12 +318,8 @@ static phys_addr_t __init memblock_alloc_region(phys_addr_t start, phys_addr_t e
base = memblock_align_down((end - size), align);
while (start <= base) {
j = memblock_overlaps_region(&memblock.reserved, base, size);
- if (j < 0) {
- /* this area isn't reserved, take it */
- if (memblock_add_region(&memblock.reserved, base, size) < 0)
- base = ~(phys_addr_t)0;
+ if (j < 0)
return base;
- }
res_base = memblock.reserved.regions[j].base;
if (res_base < size)
break;
@@ -356,8 +352,9 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
- phys_addr_t ret = memblock_alloc_region(start, this_end, size, align);
- if (ret != ~(phys_addr_t)0)
+ phys_addr_t ret = memblock_find_region(start, this_end, size, align);
+ if (ret != ~(phys_addr_t)0 &&
+ memblock_add_region(&memblock.reserved, ret, size) >= 0)
return ret;
}
start = this_end;
@@ -432,8 +429,9 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
if (memblocksize < size)
continue;
base = min(memblockbase + memblocksize, max_addr);
- res_base = memblock_alloc_region(memblockbase, base, size, align);
- if (res_base != ~(phys_addr_t)0)
+ res_base = memblock_find_region(memblockbase, base, size, align);
+ if (res_base != ~(phys_addr_t)0 &&
+ memblock_add_region(&memblock.reserved, res_base, size) >= 0)
return res_base;
}
return 0;
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 26/43] memblock: Define MEMBLOCK_ERROR internally instead of using ~(phys_addr_t)0
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index c1d2060..fc7f97b 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -22,6 +22,8 @@ static int memblock_debug;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
+#define MEMBLOCK_ERROR (~(phys_addr_t)0)
+
static int __init early_memblock(char *p)
{
if (p && strstr(p, "debug"))
@@ -326,7 +328,7 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en
base = memblock_align_down(res_base - size, align);
}
- return ~(phys_addr_t)0;
+ return MEMBLOCK_ERROR;
}
phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
@@ -353,14 +355,14 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
phys_addr_t ret = memblock_find_region(start, this_end, size, align);
- if (ret != ~(phys_addr_t)0 &&
+ if (ret != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, ret, size) >= 0)
return ret;
}
start = this_end;
}
- return ~(phys_addr_t)0;
+ return MEMBLOCK_ERROR;
}
phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
@@ -379,7 +381,7 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
for (i = 0; i < mem->cnt; i++) {
phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
size, align, nid);
- if (ret != ~(phys_addr_t)0)
+ if (ret != MEMBLOCK_ERROR)
return ret;
}
@@ -430,7 +432,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
continue;
base = min(memblockbase + memblocksize, max_addr);
res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != ~(phys_addr_t)0 &&
+ if (res_base != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, res_base, size) >= 0)
return res_base;
}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 26/43] memblock: Define MEMBLOCK_ERROR internally instead of using ~(phys_addr_t)0
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index c1d2060..fc7f97b 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -22,6 +22,8 @@ static int memblock_debug;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
+#define MEMBLOCK_ERROR (~(phys_addr_t)0)
+
static int __init early_memblock(char *p)
{
if (p && strstr(p, "debug"))
@@ -326,7 +328,7 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en
base = memblock_align_down(res_base - size, align);
}
- return ~(phys_addr_t)0;
+ return MEMBLOCK_ERROR;
}
phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
@@ -353,14 +355,14 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
this_end = memblock_nid_range(start, end, &this_nid);
if (this_nid == nid) {
phys_addr_t ret = memblock_find_region(start, this_end, size, align);
- if (ret != ~(phys_addr_t)0 &&
+ if (ret != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, ret, size) >= 0)
return ret;
}
start = this_end;
}
- return ~(phys_addr_t)0;
+ return MEMBLOCK_ERROR;
}
phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
@@ -379,7 +381,7 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
for (i = 0; i < mem->cnt; i++) {
phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
size, align, nid);
- if (ret != ~(phys_addr_t)0)
+ if (ret != MEMBLOCK_ERROR)
return ret;
}
@@ -430,7 +432,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
continue;
base = min(memblockbase + memblocksize, max_addr);
res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != ~(phys_addr_t)0 &&
+ if (res_base != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, res_base, size) >= 0)
return res_base;
}
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 27/43] memblock: Move memblock_init() to the bottom of the file
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
It's a real PITA to have to search for it in the middle
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 54 +++++++++++++++++++++++++++---------------------------
1 files changed, 27 insertions(+), 27 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index fc7f97b..ae856d4 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -107,33 +107,6 @@ static void memblock_coalesce_regions(struct memblock_type *type,
memblock_remove_region(type, r2);
}
-void __init memblock_init(void)
-{
- /* Hookup the initial arrays */
- memblock.memory.regions = memblock_memory_init_regions;
- memblock.memory.max = INIT_MEMBLOCK_REGIONS;
- memblock.reserved.regions = memblock_reserved_init_regions;
- memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
-
- /* Write a marker in the unused last array entry */
- memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
- memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
-
- /* Create a dummy zero size MEMBLOCK which will get coalesced away later.
- * This simplifies the memblock_add() code below...
- */
- memblock.memory.regions[0].base = 0;
- memblock.memory.regions[0].size = 0;
- memblock.memory.cnt = 1;
-
- /* Ditto. */
- memblock.reserved.regions[0].base = 0;
- memblock.reserved.regions[0].size = 0;
- memblock.reserved.cnt = 1;
-
- memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
-}
-
void __init memblock_analyze(void)
{
int i;
@@ -543,3 +516,30 @@ void __init memblock_set_current_limit(phys_addr_t limit)
memblock.current_limit = limit;
}
+void __init memblock_init(void)
+{
+ /* Hookup the initial arrays */
+ memblock.memory.regions = memblock_memory_init_regions;
+ memblock.memory.max = INIT_MEMBLOCK_REGIONS;
+ memblock.reserved.regions = memblock_reserved_init_regions;
+ memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
+
+ /* Write a marker in the unused last array entry */
+ memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+ memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+
+ /* Create a dummy zero size MEMBLOCK which will get coalesced away later.
+ * This simplifies the memblock_add() code below...
+ */
+ memblock.memory.regions[0].base = 0;
+ memblock.memory.regions[0].size = 0;
+ memblock.memory.cnt = 1;
+
+ /* Ditto. */
+ memblock.reserved.regions[0].base = 0;
+ memblock.reserved.regions[0].size = 0;
+ memblock.reserved.cnt = 1;
+
+ memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
+}
+
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 27/43] memblock: Move memblock_init() to the bottom of the file
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
It's a real PITA to have to search for it in the middle
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 54 +++++++++++++++++++++++++++---------------------------
1 files changed, 27 insertions(+), 27 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index fc7f97b..ae856d4 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -107,33 +107,6 @@ static void memblock_coalesce_regions(struct memblock_type *type,
memblock_remove_region(type, r2);
}
-void __init memblock_init(void)
-{
- /* Hookup the initial arrays */
- memblock.memory.regions = memblock_memory_init_regions;
- memblock.memory.max = INIT_MEMBLOCK_REGIONS;
- memblock.reserved.regions = memblock_reserved_init_regions;
- memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
-
- /* Write a marker in the unused last array entry */
- memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
- memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
-
- /* Create a dummy zero size MEMBLOCK which will get coalesced away later.
- * This simplifies the memblock_add() code below...
- */
- memblock.memory.regions[0].base = 0;
- memblock.memory.regions[0].size = 0;
- memblock.memory.cnt = 1;
-
- /* Ditto. */
- memblock.reserved.regions[0].base = 0;
- memblock.reserved.regions[0].size = 0;
- memblock.reserved.cnt = 1;
-
- memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
-}
-
void __init memblock_analyze(void)
{
int i;
@@ -543,3 +516,30 @@ void __init memblock_set_current_limit(phys_addr_t limit)
memblock.current_limit = limit;
}
+void __init memblock_init(void)
+{
+ /* Hookup the initial arrays */
+ memblock.memory.regions = memblock_memory_init_regions;
+ memblock.memory.max = INIT_MEMBLOCK_REGIONS;
+ memblock.reserved.regions = memblock_reserved_init_regions;
+ memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
+
+ /* Write a marker in the unused last array entry */
+ memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+ memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+
+ /* Create a dummy zero size MEMBLOCK which will get coalesced away later.
+ * This simplifies the memblock_add() code below...
+ */
+ memblock.memory.regions[0].base = 0;
+ memblock.memory.regions[0].size = 0;
+ memblock.memory.cnt = 1;
+
+ /* Ditto. */
+ memblock.reserved.regions[0].base = 0;
+ memblock.reserved.regions[0].size = 0;
+ memblock.reserved.cnt = 1;
+
+ memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
+}
+
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 28/43] memblock: split memblock_find_base() out of __memblock_alloc_base()
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This will be used by the array resize code and might prove useful
to some arch code as well at which point it can be made non-static.
Also add comment as to why aligning size is important
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
v2. Fix loss of size alignment
v3. Fix result code
---
mm/memblock.c | 58 +++++++++++++++++++++++++++++++++++++-------------------
1 files changed, 38 insertions(+), 20 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index ae856d4..b775fca 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -345,12 +345,15 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
BUG_ON(0 == size);
+ /* We align the size to limit fragmentation. Without this, a lot of
+ * small allocs quickly eat up the whole reserve array on sparc
+ */
+ size = memblock_align_up(size, align);
+
/* We do a bottom-up search for a region with the right
* nid since that's easier considering how memblock_nid_range()
* works
*/
- size = memblock_align_up(size, align);
-
for (i = 0; i < mem->cnt; i++) {
phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
size, align, nid);
@@ -366,20 +369,7 @@ phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
}
-phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- phys_addr_t alloc;
-
- alloc = __memblock_alloc_base(size, align, max_addr);
-
- if (alloc == 0)
- panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
- (unsigned long long) size, (unsigned long long) max_addr);
-
- return alloc;
-}
-
-phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
long i;
phys_addr_t base = 0;
@@ -387,8 +377,6 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
BUG_ON(0 == size);
- size = memblock_align_up(size, align);
-
/* Pump up max_addr */
if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
max_addr = memblock.current_limit;
@@ -405,13 +393,43 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
continue;
base = min(memblockbase + memblocksize, max_addr);
res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != MEMBLOCK_ERROR &&
- memblock_add_region(&memblock.reserved, res_base, size) >= 0)
+ if (res_base != MEMBLOCK_ERROR)
return res_base;
}
+ return MEMBLOCK_ERROR;
+}
+
+phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+{
+ phys_addr_t found;
+
+ /* We align the size to limit fragmentation. Without this, a lot of
+ * small allocs quickly eat up the whole reserve array on sparc
+ */
+ size = memblock_align_up(size, align);
+
+ found = memblock_find_base(size, align, max_addr);
+ if (found != MEMBLOCK_ERROR &&
+ memblock_add_region(&memblock.reserved, found, size) >= 0)
+ return found;
+
return 0;
}
+phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+{
+ phys_addr_t alloc;
+
+ alloc = __memblock_alloc_base(size, align, max_addr);
+
+ if (alloc == 0)
+ panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
+ (unsigned long long) size, (unsigned long long) max_addr);
+
+ return alloc;
+}
+
+
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 28/43] memblock: split memblock_find_base() out of __memblock_alloc_base()
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
This will be used by the array resize code and might prove useful
to some arch code as well at which point it can be made non-static.
Also add comment as to why aligning size is important
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
v2. Fix loss of size alignment
v3. Fix result code
---
mm/memblock.c | 58 +++++++++++++++++++++++++++++++++++++-------------------
1 files changed, 38 insertions(+), 20 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index ae856d4..b775fca 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -345,12 +345,15 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
BUG_ON(0 == size);
+ /* We align the size to limit fragmentation. Without this, a lot of
+ * small allocs quickly eat up the whole reserve array on sparc
+ */
+ size = memblock_align_up(size, align);
+
/* We do a bottom-up search for a region with the right
* nid since that's easier considering how memblock_nid_range()
* works
*/
- size = memblock_align_up(size, align);
-
for (i = 0; i < mem->cnt; i++) {
phys_addr_t ret = memblock_alloc_nid_region(&mem->regions[i],
size, align, nid);
@@ -366,20 +369,7 @@ phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
}
-phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- phys_addr_t alloc;
-
- alloc = __memblock_alloc_base(size, align, max_addr);
-
- if (alloc == 0)
- panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
- (unsigned long long) size, (unsigned long long) max_addr);
-
- return alloc;
-}
-
-phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
long i;
phys_addr_t base = 0;
@@ -387,8 +377,6 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
BUG_ON(0 == size);
- size = memblock_align_up(size, align);
-
/* Pump up max_addr */
if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
max_addr = memblock.current_limit;
@@ -405,13 +393,43 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
continue;
base = min(memblockbase + memblocksize, max_addr);
res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != MEMBLOCK_ERROR &&
- memblock_add_region(&memblock.reserved, res_base, size) >= 0)
+ if (res_base != MEMBLOCK_ERROR)
return res_base;
}
+ return MEMBLOCK_ERROR;
+}
+
+phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+{
+ phys_addr_t found;
+
+ /* We align the size to limit fragmentation. Without this, a lot of
+ * small allocs quickly eat up the whole reserve array on sparc
+ */
+ size = memblock_align_up(size, align);
+
+ found = memblock_find_base(size, align, max_addr);
+ if (found != MEMBLOCK_ERROR &&
+ memblock_add_region(&memblock.reserved, found, size) >= 0)
+ return found;
+
return 0;
}
+phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+{
+ phys_addr_t alloc;
+
+ alloc = __memblock_alloc_base(size, align, max_addr);
+
+ if (alloc == 0)
+ panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
+ (unsigned long long) size, (unsigned long long) max_addr);
+
+ return alloc;
+}
+
+
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 29/43] memblock: Move functions around into a more sensible order
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Some shuffling is needed for doing array resize so we may as well
put some sense into the ordering of the functions in the whole memblock.c
file. No code change. Added some comments.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 301 ++++++++++++++++++++++++++++++---------------------------
1 files changed, 159 insertions(+), 142 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index b775fca..e5f3f9b 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -24,40 +24,18 @@ static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIO
#define MEMBLOCK_ERROR (~(phys_addr_t)0)
-static int __init early_memblock(char *p)
-{
- if (p && strstr(p, "debug"))
- memblock_debug = 1;
- return 0;
-}
-early_param("memblock", early_memblock);
+/*
+ * Address comparison utilities
+ */
-static void memblock_dump(struct memblock_type *region, char *name)
+static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
{
- unsigned long long base, size;
- int i;
-
- pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
-
- for (i = 0; i < region->cnt; i++) {
- base = region->regions[i].base;
- size = region->regions[i].size;
-
- pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
- name, i, base, base + size - 1, size);
- }
+ return addr & ~(size - 1);
}
-void memblock_dump_all(void)
+static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
{
- if (!memblock_debug)
- return;
-
- pr_info("MEMBLOCK configuration:\n");
- pr_info(" memory size = 0x%llx\n", (unsigned long long)memblock.memory_size);
-
- memblock_dump(&memblock.memory, "memory");
- memblock_dump(&memblock.reserved, "reserved");
+ return (addr + (size - 1)) & ~(size - 1);
}
static unsigned long memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
@@ -88,6 +66,77 @@ static long memblock_regions_adjacent(struct memblock_type *type,
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
+long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+{
+ unsigned long i;
+
+ for (i = 0; i < type->cnt; i++) {
+ phys_addr_t rgnbase = type->regions[i].base;
+ phys_addr_t rgnsize = type->regions[i].size;
+ if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
+ break;
+ }
+
+ return (i < type->cnt) ? i : -1;
+}
+
+/*
+ * Find, allocate, deallocate or reserve unreserved regions. All allocations
+ * are top-down.
+ */
+
+static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,
+ phys_addr_t size, phys_addr_t align)
+{
+ phys_addr_t base, res_base;
+ long j;
+
+ base = memblock_align_down((end - size), align);
+ while (start <= base) {
+ j = memblock_overlaps_region(&memblock.reserved, base, size);
+ if (j < 0)
+ return base;
+ res_base = memblock.reserved.regions[j].base;
+ if (res_base < size)
+ break;
+ base = memblock_align_down(res_base - size, align);
+ }
+
+ return MEMBLOCK_ERROR;
+}
+
+static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+{
+ long i;
+ phys_addr_t base = 0;
+ phys_addr_t res_base;
+
+ BUG_ON(0 == size);
+
+ size = memblock_align_up(size, align);
+
+ /* Pump up max_addr */
+ if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
+ max_addr = memblock.current_limit;
+
+ /* We do a top-down search, this tends to limit memory
+ * fragmentation by keeping early boot allocs near the
+ * top of memory
+ */
+ for (i = memblock.memory.cnt - 1; i >= 0; i--) {
+ phys_addr_t memblockbase = memblock.memory.regions[i].base;
+ phys_addr_t memblocksize = memblock.memory.regions[i].size;
+
+ if (memblocksize < size)
+ continue;
+ base = min(memblockbase + memblocksize, max_addr);
+ res_base = memblock_find_region(memblockbase, base, size, align);
+ if (res_base != MEMBLOCK_ERROR)
+ return res_base;
+ }
+ return MEMBLOCK_ERROR;
+}
+
static void memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
@@ -107,22 +156,6 @@ static void memblock_coalesce_regions(struct memblock_type *type,
memblock_remove_region(type, r2);
}
-void __init memblock_analyze(void)
-{
- int i;
-
- /* Check marker in the unused last array entry */
- WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
- != (phys_addr_t)RED_INACTIVE);
- WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base
- != (phys_addr_t)RED_INACTIVE);
-
- memblock.memory_size = 0;
-
- for (i = 0; i < memblock.memory.cnt; i++)
- memblock.memory_size += memblock.memory.regions[i].size;
-}
-
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
@@ -260,49 +293,47 @@ long __init memblock_reserve(phys_addr_t base, phys_addr_t size)
return memblock_add_region(_rgn, base, size);
}
-long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
- unsigned long i;
+ phys_addr_t found;
- for (i = 0; i < type->cnt; i++) {
- phys_addr_t rgnbase = type->regions[i].base;
- phys_addr_t rgnsize = type->regions[i].size;
- if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
- break;
- }
+ /* We align the size to limit fragmentation. Without this, a lot of
+ * small allocs quickly eat up the whole reserve array on sparc
+ */
+ size = memblock_align_up(size, align);
- return (i < type->cnt) ? i : -1;
-}
+ found = memblock_find_base(size, align, max_addr);
+ if (found != MEMBLOCK_ERROR &&
+ memblock_add_region(&memblock.reserved, found, size) >= 0)
+ return found;
-static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
-{
- return addr & ~(size - 1);
+ return 0;
}
-static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
+phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
- return (addr + (size - 1)) & ~(size - 1);
+ phys_addr_t alloc;
+
+ alloc = __memblock_alloc_base(size, align, max_addr);
+
+ if (alloc == 0)
+ panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
+ (unsigned long long) size, (unsigned long long) max_addr);
+
+ return alloc;
}
-static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,
- phys_addr_t size, phys_addr_t align)
+phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
{
- phys_addr_t base, res_base;
- long j;
+ return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
+}
- base = memblock_align_down((end - size), align);
- while (start <= base) {
- j = memblock_overlaps_region(&memblock.reserved, base, size);
- if (j < 0)
- return base;
- res_base = memblock.reserved.regions[j].base;
- if (res_base < size)
- break;
- base = memblock_align_down(res_base - size, align);
- }
- return MEMBLOCK_ERROR;
-}
+/*
+ * Additional node-local allocators. Search for node memory is bottom up
+ * and walks memblock regions within that node bottom-up as well, but allocation
+ * within an memblock region is top-down.
+ */
phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
{
@@ -364,72 +395,6 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
return memblock_alloc(size, align);
}
-phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
-{
- return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
-}
-
-static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- long i;
- phys_addr_t base = 0;
- phys_addr_t res_base;
-
- BUG_ON(0 == size);
-
- /* Pump up max_addr */
- if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
- max_addr = memblock.current_limit;
-
- /* We do a top-down search, this tends to limit memory
- * fragmentation by keeping early boot allocs near the
- * top of memory
- */
- for (i = memblock.memory.cnt - 1; i >= 0; i--) {
- phys_addr_t memblockbase = memblock.memory.regions[i].base;
- phys_addr_t memblocksize = memblock.memory.regions[i].size;
-
- if (memblocksize < size)
- continue;
- base = min(memblockbase + memblocksize, max_addr);
- res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != MEMBLOCK_ERROR)
- return res_base;
- }
- return MEMBLOCK_ERROR;
-}
-
-phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- phys_addr_t found;
-
- /* We align the size to limit fragmentation. Without this, a lot of
- * small allocs quickly eat up the whole reserve array on sparc
- */
- size = memblock_align_up(size, align);
-
- found = memblock_find_base(size, align, max_addr);
- if (found != MEMBLOCK_ERROR &&
- memblock_add_region(&memblock.reserved, found, size) >= 0)
- return found;
-
- return 0;
-}
-
-phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- phys_addr_t alloc;
-
- alloc = __memblock_alloc_base(size, align, max_addr);
-
- if (alloc == 0)
- panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
- (unsigned long long) size, (unsigned long long) max_addr);
-
- return alloc;
-}
-
-
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
@@ -534,6 +499,50 @@ void __init memblock_set_current_limit(phys_addr_t limit)
memblock.current_limit = limit;
}
+static void memblock_dump(struct memblock_type *region, char *name)
+{
+ unsigned long long base, size;
+ int i;
+
+ pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
+
+ for (i = 0; i < region->cnt; i++) {
+ base = region->regions[i].base;
+ size = region->regions[i].size;
+
+ pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
+ name, i, base, base + size - 1, size);
+ }
+}
+
+void memblock_dump_all(void)
+{
+ if (!memblock_debug)
+ return;
+
+ pr_info("MEMBLOCK configuration:\n");
+ pr_info(" memory size = 0x%llx\n", (unsigned long long)memblock.memory_size);
+
+ memblock_dump(&memblock.memory, "memory");
+ memblock_dump(&memblock.reserved, "reserved");
+}
+
+void __init memblock_analyze(void)
+{
+ int i;
+
+ /* Check marker in the unused last array entry */
+ WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+ WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+
+ memblock.memory_size = 0;
+
+ for (i = 0; i < memblock.memory.cnt; i++)
+ memblock.memory_size += memblock.memory.regions[i].size;
+}
+
void __init memblock_init(void)
{
/* Hookup the initial arrays */
@@ -561,3 +570,11 @@ void __init memblock_init(void)
memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
}
+static int __init early_memblock(char *p)
+{
+ if (p && strstr(p, "debug"))
+ memblock_debug = 1;
+ return 0;
+}
+early_param("memblock", early_memblock);
+
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 29/43] memblock: Move functions around into a more sensible order
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Some shuffling is needed for doing array resize so we may as well
put some sense into the ordering of the functions in the whole memblock.c
file. No code change. Added some comments.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 301 ++++++++++++++++++++++++++++++---------------------------
1 files changed, 159 insertions(+), 142 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index b775fca..e5f3f9b 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -24,40 +24,18 @@ static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIO
#define MEMBLOCK_ERROR (~(phys_addr_t)0)
-static int __init early_memblock(char *p)
-{
- if (p && strstr(p, "debug"))
- memblock_debug = 1;
- return 0;
-}
-early_param("memblock", early_memblock);
+/*
+ * Address comparison utilities
+ */
-static void memblock_dump(struct memblock_type *region, char *name)
+static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
{
- unsigned long long base, size;
- int i;
-
- pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
-
- for (i = 0; i < region->cnt; i++) {
- base = region->regions[i].base;
- size = region->regions[i].size;
-
- pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
- name, i, base, base + size - 1, size);
- }
+ return addr & ~(size - 1);
}
-void memblock_dump_all(void)
+static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
{
- if (!memblock_debug)
- return;
-
- pr_info("MEMBLOCK configuration:\n");
- pr_info(" memory size = 0x%llx\n", (unsigned long long)memblock.memory_size);
-
- memblock_dump(&memblock.memory, "memory");
- memblock_dump(&memblock.reserved, "reserved");
+ return (addr + (size - 1)) & ~(size - 1);
}
static unsigned long memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
@@ -88,6 +66,77 @@ static long memblock_regions_adjacent(struct memblock_type *type,
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
+long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+{
+ unsigned long i;
+
+ for (i = 0; i < type->cnt; i++) {
+ phys_addr_t rgnbase = type->regions[i].base;
+ phys_addr_t rgnsize = type->regions[i].size;
+ if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
+ break;
+ }
+
+ return (i < type->cnt) ? i : -1;
+}
+
+/*
+ * Find, allocate, deallocate or reserve unreserved regions. All allocations
+ * are top-down.
+ */
+
+static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,
+ phys_addr_t size, phys_addr_t align)
+{
+ phys_addr_t base, res_base;
+ long j;
+
+ base = memblock_align_down((end - size), align);
+ while (start <= base) {
+ j = memblock_overlaps_region(&memblock.reserved, base, size);
+ if (j < 0)
+ return base;
+ res_base = memblock.reserved.regions[j].base;
+ if (res_base < size)
+ break;
+ base = memblock_align_down(res_base - size, align);
+ }
+
+ return MEMBLOCK_ERROR;
+}
+
+static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+{
+ long i;
+ phys_addr_t base = 0;
+ phys_addr_t res_base;
+
+ BUG_ON(0 == size);
+
+ size = memblock_align_up(size, align);
+
+ /* Pump up max_addr */
+ if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
+ max_addr = memblock.current_limit;
+
+ /* We do a top-down search, this tends to limit memory
+ * fragmentation by keeping early boot allocs near the
+ * top of memory
+ */
+ for (i = memblock.memory.cnt - 1; i >= 0; i--) {
+ phys_addr_t memblockbase = memblock.memory.regions[i].base;
+ phys_addr_t memblocksize = memblock.memory.regions[i].size;
+
+ if (memblocksize < size)
+ continue;
+ base = min(memblockbase + memblocksize, max_addr);
+ res_base = memblock_find_region(memblockbase, base, size, align);
+ if (res_base != MEMBLOCK_ERROR)
+ return res_base;
+ }
+ return MEMBLOCK_ERROR;
+}
+
static void memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
@@ -107,22 +156,6 @@ static void memblock_coalesce_regions(struct memblock_type *type,
memblock_remove_region(type, r2);
}
-void __init memblock_analyze(void)
-{
- int i;
-
- /* Check marker in the unused last array entry */
- WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
- != (phys_addr_t)RED_INACTIVE);
- WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base
- != (phys_addr_t)RED_INACTIVE);
-
- memblock.memory_size = 0;
-
- for (i = 0; i < memblock.memory.cnt; i++)
- memblock.memory_size += memblock.memory.regions[i].size;
-}
-
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
@@ -260,49 +293,47 @@ long __init memblock_reserve(phys_addr_t base, phys_addr_t size)
return memblock_add_region(_rgn, base, size);
}
-long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
- unsigned long i;
+ phys_addr_t found;
- for (i = 0; i < type->cnt; i++) {
- phys_addr_t rgnbase = type->regions[i].base;
- phys_addr_t rgnsize = type->regions[i].size;
- if (memblock_addrs_overlap(base, size, rgnbase, rgnsize))
- break;
- }
+ /* We align the size to limit fragmentation. Without this, a lot of
+ * small allocs quickly eat up the whole reserve array on sparc
+ */
+ size = memblock_align_up(size, align);
- return (i < type->cnt) ? i : -1;
-}
+ found = memblock_find_base(size, align, max_addr);
+ if (found != MEMBLOCK_ERROR &&
+ memblock_add_region(&memblock.reserved, found, size) >= 0)
+ return found;
-static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
-{
- return addr & ~(size - 1);
+ return 0;
}
-static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
+phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
{
- return (addr + (size - 1)) & ~(size - 1);
+ phys_addr_t alloc;
+
+ alloc = __memblock_alloc_base(size, align, max_addr);
+
+ if (alloc == 0)
+ panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
+ (unsigned long long) size, (unsigned long long) max_addr);
+
+ return alloc;
}
-static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,
- phys_addr_t size, phys_addr_t align)
+phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
{
- phys_addr_t base, res_base;
- long j;
+ return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
+}
- base = memblock_align_down((end - size), align);
- while (start <= base) {
- j = memblock_overlaps_region(&memblock.reserved, base, size);
- if (j < 0)
- return base;
- res_base = memblock.reserved.regions[j].base;
- if (res_base < size)
- break;
- base = memblock_align_down(res_base - size, align);
- }
- return MEMBLOCK_ERROR;
-}
+/*
+ * Additional node-local allocators. Search for node memory is bottom up
+ * and walks memblock regions within that node bottom-up as well, but allocation
+ * within an memblock region is top-down.
+ */
phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
{
@@ -364,72 +395,6 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
return memblock_alloc(size, align);
}
-phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
-{
- return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
-}
-
-static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- long i;
- phys_addr_t base = 0;
- phys_addr_t res_base;
-
- BUG_ON(0 == size);
-
- /* Pump up max_addr */
- if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
- max_addr = memblock.current_limit;
-
- /* We do a top-down search, this tends to limit memory
- * fragmentation by keeping early boot allocs near the
- * top of memory
- */
- for (i = memblock.memory.cnt - 1; i >= 0; i--) {
- phys_addr_t memblockbase = memblock.memory.regions[i].base;
- phys_addr_t memblocksize = memblock.memory.regions[i].size;
-
- if (memblocksize < size)
- continue;
- base = min(memblockbase + memblocksize, max_addr);
- res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != MEMBLOCK_ERROR)
- return res_base;
- }
- return MEMBLOCK_ERROR;
-}
-
-phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- phys_addr_t found;
-
- /* We align the size to limit fragmentation. Without this, a lot of
- * small allocs quickly eat up the whole reserve array on sparc
- */
- size = memblock_align_up(size, align);
-
- found = memblock_find_base(size, align, max_addr);
- if (found != MEMBLOCK_ERROR &&
- memblock_add_region(&memblock.reserved, found, size) >= 0)
- return found;
-
- return 0;
-}
-
-phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
- phys_addr_t alloc;
-
- alloc = __memblock_alloc_base(size, align, max_addr);
-
- if (alloc == 0)
- panic("ERROR: Failed to allocate 0x%llx bytes below 0x%llx.\n",
- (unsigned long long) size, (unsigned long long) max_addr);
-
- return alloc;
-}
-
-
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
@@ -534,6 +499,50 @@ void __init memblock_set_current_limit(phys_addr_t limit)
memblock.current_limit = limit;
}
+static void memblock_dump(struct memblock_type *region, char *name)
+{
+ unsigned long long base, size;
+ int i;
+
+ pr_info(" %s.cnt = 0x%lx\n", name, region->cnt);
+
+ for (i = 0; i < region->cnt; i++) {
+ base = region->regions[i].base;
+ size = region->regions[i].size;
+
+ pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
+ name, i, base, base + size - 1, size);
+ }
+}
+
+void memblock_dump_all(void)
+{
+ if (!memblock_debug)
+ return;
+
+ pr_info("MEMBLOCK configuration:\n");
+ pr_info(" memory size = 0x%llx\n", (unsigned long long)memblock.memory_size);
+
+ memblock_dump(&memblock.memory, "memory");
+ memblock_dump(&memblock.reserved, "reserved");
+}
+
+void __init memblock_analyze(void)
+{
+ int i;
+
+ /* Check marker in the unused last array entry */
+ WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+ WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base
+ != (phys_addr_t)RED_INACTIVE);
+
+ memblock.memory_size = 0;
+
+ for (i = 0; i < memblock.memory.cnt; i++)
+ memblock.memory_size += memblock.memory.regions[i].size;
+}
+
void __init memblock_init(void)
{
/* Hookup the initial arrays */
@@ -561,3 +570,11 @@ void __init memblock_init(void)
memblock.current_limit = MEMBLOCK_ALLOC_ANYWHERE;
}
+static int __init early_memblock(char *p)
+{
+ if (p && strstr(p, "debug"))
+ memblock_debug = 1;
+ return 0;
+}
+early_param("memblock", early_memblock);
+
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 30/43] memblock: Add array resizing support
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
When one of the array gets full, we resize it. After much thinking and
a few iterations of that code, I went back to on-demand resizing using
the (new) internal memblock_find_base() function, which is pretty much what
Yinghai initially proposed, though there some differences in the details.
To work this relies on the default alloc limit being set sensibly by
the architecture.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 102 insertions(+), 2 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index e5f3f9b..0787790 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -11,6 +11,7 @@
*/
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/poison.h>
@@ -18,12 +19,23 @@
struct memblock memblock;
-static int memblock_debug;
+static int memblock_debug, memblock_can_resize;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
#define MEMBLOCK_ERROR (~(phys_addr_t)0)
+/* inline so we don't get a warning when pr_debug is compiled out */
+static inline const char *memblock_type_name(struct memblock_type *type)
+{
+ if (type == &memblock.memory)
+ return "memory";
+ else if (type == &memblock.reserved)
+ return "reserved";
+ else
+ return "unknown";
+}
+
/*
* Address comparison utilities
*/
@@ -156,6 +168,79 @@ static void memblock_coalesce_regions(struct memblock_type *type,
memblock_remove_region(type, r2);
}
+/* Defined below but needed now */
+static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size);
+
+static int memblock_double_array(struct memblock_type *type)
+{
+ struct memblock_region *new_array, *old_array;
+ phys_addr_t old_size, new_size, addr;
+ int use_slab = slab_is_available();
+
+ /* We don't allow resizing until we know about the reserved regions
+ * of memory that aren't suitable for allocation
+ */
+ if (!memblock_can_resize)
+ return -1;
+
+ pr_debug("memblock: %s array full, doubling...", memblock_type_name(type));
+
+ /* Calculate new doubled size */
+ old_size = type->max * sizeof(struct memblock_region);
+ new_size = old_size << 1;
+
+ /* Try to find some space for it.
+ *
+ * WARNING: We assume that either slab_is_available() and we use it or
+ * we use MEMBLOCK for allocations. That means that this is unsafe to use
+ * when bootmem is currently active (unless bootmem itself is implemented
+ * on top of MEMBLOCK which isn't the case yet)
+ *
+ * This should however not be an issue for now, as we currently only
+ * call into MEMBLOCK while it's still active, or much later when slab is
+ * active for memory hotplug operations
+ */
+ if (use_slab) {
+ new_array = kmalloc(new_size, GFP_KERNEL);
+ addr = new_array == NULL ? MEMBLOCK_ERROR : __pa(new_array);
+ } else
+ addr = memblock_find_base(new_size, sizeof(phys_addr_t), MEMBLOCK_ALLOC_ACCESSIBLE);
+ if (addr == MEMBLOCK_ERROR) {
+ pr_err("memblock: Failed to double %s array from %ld to %ld entries !\n",
+ memblock_type_name(type), type->max, type->max * 2);
+ return -1;
+ }
+ new_array = __va(addr);
+
+ /* Found space, we now need to move the array over before
+ * we add the reserved region since it may be our reserved
+ * array itself that is full.
+ */
+ memcpy(new_array, type->regions, old_size);
+ memset(new_array + type->max, 0, old_size);
+ old_array = type->regions;
+ type->regions = new_array;
+ type->max <<= 1;
+
+ /* If we use SLAB that's it, we are done */
+ if (use_slab)
+ return 0;
+
+ /* Add the new reserved region now. Should not fail ! */
+ BUG_ON(memblock_add_region(&memblock.reserved, addr, new_size) < 0);
+
+ /* If the array wasn't our static init one, then free it. We only do
+ * that before SLAB is available as later on, we don't know whether
+ * to use kfree or free_bootmem_pages(). Shouldn't be a big deal
+ * anyways
+ */
+ if (old_array != memblock_memory_init_regions &&
+ old_array != memblock_reserved_init_regions)
+ memblock_free(__pa(old_array), old_size);
+
+ return 0;
+}
+
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
@@ -196,7 +281,11 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
if (coalesced)
return coalesced;
- if (type->cnt >= type->max)
+
+ /* If we are out of space, we fail. It's too late to resize the array
+ * but then this shouldn't have happened in the first place.
+ */
+ if (WARN_ON(type->cnt >= type->max))
return -1;
/* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */
@@ -217,6 +306,14 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
}
type->cnt++;
+ /* The array is full ? Try to resize it. If that fails, we undo
+ * our allocation and return an error
+ */
+ if (type->cnt == type->max && memblock_double_array(type)) {
+ type->cnt--;
+ return -1;
+ }
+
return 0;
}
@@ -541,6 +638,9 @@ void __init memblock_analyze(void)
for (i = 0; i < memblock.memory.cnt; i++)
memblock.memory_size += memblock.memory.regions[i].size;
+
+ /* We allow resizing from there */
+ memblock_can_resize = 1;
}
void __init memblock_init(void)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 30/43] memblock: Add array resizing support
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
When one of the array gets full, we resize it. After much thinking and
a few iterations of that code, I went back to on-demand resizing using
the (new) internal memblock_find_base() function, which is pretty much what
Yinghai initially proposed, though there some differences in the details.
To work this relies on the default alloc limit being set sensibly by
the architecture.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 102 insertions(+), 2 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index e5f3f9b..0787790 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -11,6 +11,7 @@
*/
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/poison.h>
@@ -18,12 +19,23 @@
struct memblock memblock;
-static int memblock_debug;
+static int memblock_debug, memblock_can_resize;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
#define MEMBLOCK_ERROR (~(phys_addr_t)0)
+/* inline so we don't get a warning when pr_debug is compiled out */
+static inline const char *memblock_type_name(struct memblock_type *type)
+{
+ if (type == &memblock.memory)
+ return "memory";
+ else if (type == &memblock.reserved)
+ return "reserved";
+ else
+ return "unknown";
+}
+
/*
* Address comparison utilities
*/
@@ -156,6 +168,79 @@ static void memblock_coalesce_regions(struct memblock_type *type,
memblock_remove_region(type, r2);
}
+/* Defined below but needed now */
+static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size);
+
+static int memblock_double_array(struct memblock_type *type)
+{
+ struct memblock_region *new_array, *old_array;
+ phys_addr_t old_size, new_size, addr;
+ int use_slab = slab_is_available();
+
+ /* We don't allow resizing until we know about the reserved regions
+ * of memory that aren't suitable for allocation
+ */
+ if (!memblock_can_resize)
+ return -1;
+
+ pr_debug("memblock: %s array full, doubling...", memblock_type_name(type));
+
+ /* Calculate new doubled size */
+ old_size = type->max * sizeof(struct memblock_region);
+ new_size = old_size << 1;
+
+ /* Try to find some space for it.
+ *
+ * WARNING: We assume that either slab_is_available() and we use it or
+ * we use MEMBLOCK for allocations. That means that this is unsafe to use
+ * when bootmem is currently active (unless bootmem itself is implemented
+ * on top of MEMBLOCK which isn't the case yet)
+ *
+ * This should however not be an issue for now, as we currently only
+ * call into MEMBLOCK while it's still active, or much later when slab is
+ * active for memory hotplug operations
+ */
+ if (use_slab) {
+ new_array = kmalloc(new_size, GFP_KERNEL);
+ addr = new_array == NULL ? MEMBLOCK_ERROR : __pa(new_array);
+ } else
+ addr = memblock_find_base(new_size, sizeof(phys_addr_t), MEMBLOCK_ALLOC_ACCESSIBLE);
+ if (addr == MEMBLOCK_ERROR) {
+ pr_err("memblock: Failed to double %s array from %ld to %ld entries !\n",
+ memblock_type_name(type), type->max, type->max * 2);
+ return -1;
+ }
+ new_array = __va(addr);
+
+ /* Found space, we now need to move the array over before
+ * we add the reserved region since it may be our reserved
+ * array itself that is full.
+ */
+ memcpy(new_array, type->regions, old_size);
+ memset(new_array + type->max, 0, old_size);
+ old_array = type->regions;
+ type->regions = new_array;
+ type->max <<= 1;
+
+ /* If we use SLAB that's it, we are done */
+ if (use_slab)
+ return 0;
+
+ /* Add the new reserved region now. Should not fail ! */
+ BUG_ON(memblock_add_region(&memblock.reserved, addr, new_size) < 0);
+
+ /* If the array wasn't our static init one, then free it. We only do
+ * that before SLAB is available as later on, we don't know whether
+ * to use kfree or free_bootmem_pages(). Shouldn't be a big deal
+ * anyways
+ */
+ if (old_array != memblock_memory_init_regions &&
+ old_array != memblock_reserved_init_regions)
+ memblock_free(__pa(old_array), old_size);
+
+ return 0;
+}
+
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
@@ -196,7 +281,11 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
if (coalesced)
return coalesced;
- if (type->cnt >= type->max)
+
+ /* If we are out of space, we fail. It's too late to resize the array
+ * but then this shouldn't have happened in the first place.
+ */
+ if (WARN_ON(type->cnt >= type->max))
return -1;
/* Couldn't coalesce the MEMBLOCK, so add it to the sorted table. */
@@ -217,6 +306,14 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
}
type->cnt++;
+ /* The array is full ? Try to resize it. If that fails, we undo
+ * our allocation and return an error
+ */
+ if (type->cnt == type->max && memblock_double_array(type)) {
+ type->cnt--;
+ return -1;
+ }
+
return 0;
}
@@ -541,6 +638,9 @@ void __init memblock_analyze(void)
for (i = 0; i < memblock.memory.cnt; i++)
memblock.memory_size += memblock.memory.regions[i].size;
+
+ /* We allow resizing from there */
+ memblock_can_resize = 1;
}
void __init memblock_init(void)
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 31/43] memblock: Add arch function to control coalescing of memblock memory regions
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Some archs such as ARM want to avoid coalescing accross things such
as the lowmem/highmem boundary or similar. This provides the option
to control it via an arch callback for which a weak default is provided
which always allows coalescing.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 ++
mm/memblock.c | 19 ++++++++++++++++++-
2 files changed, 20 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 150be93..e5e8f9d 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -72,6 +72,8 @@ extern void memblock_dump_all(void);
/* Provided by the architecture */
extern phys_addr_t memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid);
+extern int memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
+ phys_addr_t addr2, phys_addr_t size2);
/**
* memblock_set_current_limit - Set the current allocation limit to allow
diff --git a/mm/memblock.c b/mm/memblock.c
index 0787790..8715f09 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -241,6 +241,12 @@ static int memblock_double_array(struct memblock_type *type)
return 0;
}
+extern int __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
+ phys_addr_t addr2, phys_addr_t size2)
+{
+ return 1;
+}
+
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
@@ -262,6 +268,10 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
return 0;
adjacent = memblock_addrs_adjacent(base, size, rgnbase, rgnsize);
+ /* Check if arch allows coalescing */
+ if (adjacent != 0 && type == &memblock.memory &&
+ !memblock_memory_can_coalesce(base, size, rgnbase, rgnsize))
+ break;
if (adjacent > 0) {
type->regions[i].base -= size;
type->regions[i].size += size;
@@ -274,7 +284,14 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
}
}
- if ((i < type->cnt - 1) && memblock_regions_adjacent(type, i, i+1)) {
+ /* If we plugged a hole, we may want to also coalesce with the
+ * next region
+ */
+ if ((i < type->cnt - 1) && memblock_regions_adjacent(type, i, i+1) &&
+ ((type != &memblock.memory || memblock_memory_can_coalesce(type->regions[i].base,
+ type->regions[i].size,
+ type->regions[i+1].base,
+ type->regions[i+1].size)))) {
memblock_coalesce_regions(type, i, i+1);
coalesced++;
}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 31/43] memblock: Add arch function to control coalescing of memblock memory regions
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Some archs such as ARM want to avoid coalescing accross things such
as the lowmem/highmem boundary or similar. This provides the option
to control it via an arch callback for which a weak default is provided
which always allows coalescing.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 ++
mm/memblock.c | 19 ++++++++++++++++++-
2 files changed, 20 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 150be93..e5e8f9d 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -72,6 +72,8 @@ extern void memblock_dump_all(void);
/* Provided by the architecture */
extern phys_addr_t memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid);
+extern int memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
+ phys_addr_t addr2, phys_addr_t size2);
/**
* memblock_set_current_limit - Set the current allocation limit to allow
diff --git a/mm/memblock.c b/mm/memblock.c
index 0787790..8715f09 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -241,6 +241,12 @@ static int memblock_double_array(struct memblock_type *type)
return 0;
}
+extern int __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
+ phys_addr_t addr2, phys_addr_t size2)
+{
+ return 1;
+}
+
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
@@ -262,6 +268,10 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
return 0;
adjacent = memblock_addrs_adjacent(base, size, rgnbase, rgnsize);
+ /* Check if arch allows coalescing */
+ if (adjacent != 0 && type == &memblock.memory &&
+ !memblock_memory_can_coalesce(base, size, rgnbase, rgnsize))
+ break;
if (adjacent > 0) {
type->regions[i].base -= size;
type->regions[i].size += size;
@@ -274,7 +284,14 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
}
}
- if ((i < type->cnt - 1) && memblock_regions_adjacent(type, i, i+1)) {
+ /* If we plugged a hole, we may want to also coalesce with the
+ * next region
+ */
+ if ((i < type->cnt - 1) && memblock_regions_adjacent(type, i, i+1) &&
+ ((type != &memblock.memory || memblock_memory_can_coalesce(type->regions[i].base,
+ type->regions[i].size,
+ type->regions[i+1].base,
+ type->regions[i+1].size)))) {
memblock_coalesce_regions(type, i, i+1);
coalesced++;
}
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 32/43] memblock: Add "start" argument to memblock_find_base()
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
To constraint the search of a region between two boundaries,
which will be used by the new NUMA aware allocator among others.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 27 ++++++++++++++++-----------
1 files changed, 16 insertions(+), 11 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 8715f09..468ff43 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -117,19 +117,18 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en
return MEMBLOCK_ERROR;
}
-static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align,
+ phys_addr_t start, phys_addr_t end)
{
long i;
- phys_addr_t base = 0;
- phys_addr_t res_base;
BUG_ON(0 == size);
size = memblock_align_up(size, align);
/* Pump up max_addr */
- if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
- max_addr = memblock.current_limit;
+ if (end == MEMBLOCK_ALLOC_ACCESSIBLE)
+ end = memblock.current_limit;
/* We do a top-down search, this tends to limit memory
* fragmentation by keeping early boot allocs near the
@@ -138,13 +137,19 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
phys_addr_t memblockbase = memblock.memory.regions[i].base;
phys_addr_t memblocksize = memblock.memory.regions[i].size;
+ phys_addr_t bottom, top, found;
if (memblocksize < size)
continue;
- base = min(memblockbase + memblocksize, max_addr);
- res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != MEMBLOCK_ERROR)
- return res_base;
+ if ((memblockbase + memblocksize) <= start)
+ break;
+ bottom = max(memblockbase, start);
+ top = min(memblockbase + memblocksize, end);
+ if (bottom >= top)
+ continue;
+ found = memblock_find_region(bottom, top, size, align);
+ if (found != MEMBLOCK_ERROR)
+ return found;
}
return MEMBLOCK_ERROR;
}
@@ -204,7 +209,7 @@ static int memblock_double_array(struct memblock_type *type)
new_array = kmalloc(new_size, GFP_KERNEL);
addr = new_array == NULL ? MEMBLOCK_ERROR : __pa(new_array);
} else
- addr = memblock_find_base(new_size, sizeof(phys_addr_t), MEMBLOCK_ALLOC_ACCESSIBLE);
+ addr = memblock_find_base(new_size, sizeof(phys_addr_t), 0, MEMBLOCK_ALLOC_ACCESSIBLE);
if (addr == MEMBLOCK_ERROR) {
pr_err("memblock: Failed to double %s array from %ld to %ld entries !\n",
memblock_type_name(type), type->max, type->max * 2);
@@ -416,7 +421,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
*/
size = memblock_align_up(size, align);
- found = memblock_find_base(size, align, max_addr);
+ found = memblock_find_base(size, align, 0, max_addr);
if (found != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, found, size) >= 0)
return found;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 32/43] memblock: Add "start" argument to memblock_find_base()
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
To constraint the search of a region between two boundaries,
which will be used by the new NUMA aware allocator among others.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 27 ++++++++++++++++-----------
1 files changed, 16 insertions(+), 11 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 8715f09..468ff43 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -117,19 +117,18 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en
return MEMBLOCK_ERROR;
}
-static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
+static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align,
+ phys_addr_t start, phys_addr_t end)
{
long i;
- phys_addr_t base = 0;
- phys_addr_t res_base;
BUG_ON(0 == size);
size = memblock_align_up(size, align);
/* Pump up max_addr */
- if (max_addr == MEMBLOCK_ALLOC_ACCESSIBLE)
- max_addr = memblock.current_limit;
+ if (end == MEMBLOCK_ALLOC_ACCESSIBLE)
+ end = memblock.current_limit;
/* We do a top-down search, this tends to limit memory
* fragmentation by keeping early boot allocs near the
@@ -138,13 +137,19 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align
for (i = memblock.memory.cnt - 1; i >= 0; i--) {
phys_addr_t memblockbase = memblock.memory.regions[i].base;
phys_addr_t memblocksize = memblock.memory.regions[i].size;
+ phys_addr_t bottom, top, found;
if (memblocksize < size)
continue;
- base = min(memblockbase + memblocksize, max_addr);
- res_base = memblock_find_region(memblockbase, base, size, align);
- if (res_base != MEMBLOCK_ERROR)
- return res_base;
+ if ((memblockbase + memblocksize) <= start)
+ break;
+ bottom = max(memblockbase, start);
+ top = min(memblockbase + memblocksize, end);
+ if (bottom >= top)
+ continue;
+ found = memblock_find_region(bottom, top, size, align);
+ if (found != MEMBLOCK_ERROR)
+ return found;
}
return MEMBLOCK_ERROR;
}
@@ -204,7 +209,7 @@ static int memblock_double_array(struct memblock_type *type)
new_array = kmalloc(new_size, GFP_KERNEL);
addr = new_array == NULL ? MEMBLOCK_ERROR : __pa(new_array);
} else
- addr = memblock_find_base(new_size, sizeof(phys_addr_t), MEMBLOCK_ALLOC_ACCESSIBLE);
+ addr = memblock_find_base(new_size, sizeof(phys_addr_t), 0, MEMBLOCK_ALLOC_ACCESSIBLE);
if (addr == MEMBLOCK_ERROR) {
pr_err("memblock: Failed to double %s array from %ld to %ld entries !\n",
memblock_type_name(type), type->max, type->max * 2);
@@ -416,7 +421,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
*/
size = memblock_align_up(size, align);
- found = memblock_find_base(size, align, max_addr);
+ found = memblock_find_base(size, align, 0, max_addr);
if (found != MEMBLOCK_ERROR &&
memblock_add_region(&memblock.reserved, found, size) >= 0)
return found;
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 33/43] memblock: NUMA allocate can now use early_pfn_map
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
We now provide a default (weak) implementation of memblock_nid_range()
which uses the early_pfn_map[] if CONFIG_ARCH_POPULATES_NODE_MAP
is set. Sparc still needs to use its own method due to the way
the pages can be scattered between nodes.
This implementation is inefficient due to our main algorithm and
callback construct wanting to work on an ascending addresses bases
while early_pfn_map[] would rather work with nid's (it's unsorted
at that stage). But it should work and we can look into improving
it subsequently, possibly using arch compile options to chose a
different algorithm alltogether.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 3 +++
mm/memblock.c | 28 +++++++++++++++++++++++++++-
2 files changed, 30 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index e5e8f9d..82b0302 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -47,6 +47,9 @@ extern long memblock_remove(phys_addr_t base, phys_addr_t size);
extern long __init memblock_free(phys_addr_t base, phys_addr_t size);
extern long __init memblock_reserve(phys_addr_t base, phys_addr_t size);
+/* The numa aware allocator is only available if
+ * CONFIG_ARCH_POPULATES_NODE_MAP is set
+ */
extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
diff --git a/mm/memblock.c b/mm/memblock.c
index 468ff43..af7e4d9 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/poison.h>
+#include <linux/pfn.h>
#include <linux/memblock.h>
struct memblock memblock;
@@ -451,11 +452,36 @@ phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
/*
* Additional node-local allocators. Search for node memory is bottom up
* and walks memblock regions within that node bottom-up as well, but allocation
- * within an memblock region is top-down.
+ * within an memblock region is top-down. XXX I plan to fix that at some stage
+ *
+ * WARNING: Only available after early_node_map[] has been populated,
+ * on some architectures, that is after all the calls to add_active_range()
+ * have been done to populate it.
*/
phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
{
+#ifdef CONFIG_ARCH_POPULATES_NODE_MAP
+ /*
+ * This code originates from sparc which really wants use to walk by addresses
+ * and returns the nid. This is not very convenient for early_pfn_map[] users
+ * as the map isn't sorted yet, and it really wants to be walked by nid.
+ *
+ * For now, I implement the inefficient method below which walks the early
+ * map multiple times. Eventually we may want to use an ARCH config option
+ * to implement a completely different method for both case.
+ */
+ unsigned long start_pfn, end_pfn;
+ int i;
+
+ for (i = 0; i < MAX_NUMNODES; i++) {
+ get_pfn_range_for_nid(i, &start_pfn, &end_pfn);
+ if (start < PFN_PHYS(start_pfn) || start >= PFN_PHYS(end_pfn))
+ continue;
+ *nid = i;
+ return min(end, PFN_PHYS(end_pfn));
+ }
+#endif
*nid = 0;
return end;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 33/43] memblock: NUMA allocate can now use early_pfn_map
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
We now provide a default (weak) implementation of memblock_nid_range()
which uses the early_pfn_map[] if CONFIG_ARCH_POPULATES_NODE_MAP
is set. Sparc still needs to use its own method due to the way
the pages can be scattered between nodes.
This implementation is inefficient due to our main algorithm and
callback construct wanting to work on an ascending addresses bases
while early_pfn_map[] would rather work with nid's (it's unsorted
at that stage). But it should work and we can look into improving
it subsequently, possibly using arch compile options to chose a
different algorithm alltogether.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 3 +++
mm/memblock.c | 28 +++++++++++++++++++++++++++-
2 files changed, 30 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index e5e8f9d..82b0302 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -47,6 +47,9 @@ extern long memblock_remove(phys_addr_t base, phys_addr_t size);
extern long __init memblock_free(phys_addr_t base, phys_addr_t size);
extern long __init memblock_reserve(phys_addr_t base, phys_addr_t size);
+/* The numa aware allocator is only available if
+ * CONFIG_ARCH_POPULATES_NODE_MAP is set
+ */
extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
diff --git a/mm/memblock.c b/mm/memblock.c
index 468ff43..af7e4d9 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/poison.h>
+#include <linux/pfn.h>
#include <linux/memblock.h>
struct memblock memblock;
@@ -451,11 +452,36 @@ phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align)
/*
* Additional node-local allocators. Search for node memory is bottom up
* and walks memblock regions within that node bottom-up as well, but allocation
- * within an memblock region is top-down.
+ * within an memblock region is top-down. XXX I plan to fix that at some stage
+ *
+ * WARNING: Only available after early_node_map[] has been populated,
+ * on some architectures, that is after all the calls to add_active_range()
+ * have been done to populate it.
*/
phys_addr_t __weak __init memblock_nid_range(phys_addr_t start, phys_addr_t end, int *nid)
{
+#ifdef CONFIG_ARCH_POPULATES_NODE_MAP
+ /*
+ * This code originates from sparc which really wants use to walk by addresses
+ * and returns the nid. This is not very convenient for early_pfn_map[] users
+ * as the map isn't sorted yet, and it really wants to be walked by nid.
+ *
+ * For now, I implement the inefficient method below which walks the early
+ * map multiple times. Eventually we may want to use an ARCH config option
+ * to implement a completely different method for both case.
+ */
+ unsigned long start_pfn, end_pfn;
+ int i;
+
+ for (i = 0; i < MAX_NUMNODES; i++) {
+ get_pfn_range_for_nid(i, &start_pfn, &end_pfn);
+ if (start < PFN_PHYS(start_pfn) || start >= PFN_PHYS(end_pfn))
+ continue;
+ *nid = i;
+ return min(end, PFN_PHYS(end_pfn));
+ }
+#endif
*nid = 0;
return end;
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 34/43] memblock: Separate memblock_alloc_nid() and memblock_alloc_try_nid()
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
The former is now strict, it will fail if it cannot honor the allocation
within the node, while the later implements the previous semantic which
falls back to allocating anywhere.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sparc/mm/init_64.c | 4 ++--
include/linux/memblock.h | 6 +++++-
mm/memblock.c | 14 ++++++++++++++
3 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 0883113..dc584d2 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -820,7 +820,7 @@ static void __init allocate_node_data(int nid)
struct pglist_data *p;
#ifdef CONFIG_NEED_MULTIPLE_NODES
- paddr = memblock_alloc_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid);
+ paddr = memblock_alloc_try_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid);
if (!paddr) {
prom_printf("Cannot allocate pglist_data for nid[%d]\n", nid);
prom_halt();
@@ -840,7 +840,7 @@ static void __init allocate_node_data(int nid)
if (p->node_spanned_pages) {
num_pages = bootmem_bootmap_pages(p->node_spanned_pages);
- paddr = memblock_alloc_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid);
+ paddr = memblock_alloc_try_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid);
if (!paddr) {
prom_printf("Cannot allocate bootmap for nid[%d]\n",
nid);
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 82b0302..c8da03e 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -50,7 +50,11 @@ extern long __init memblock_reserve(phys_addr_t base, phys_addr_t size);
/* The numa aware allocator is only available if
* CONFIG_ARCH_POPULATES_NODE_MAP is set
*/
-extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
+extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align,
+ int nid);
+extern phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
+ int nid);
+
extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
diff --git a/mm/memblock.c b/mm/memblock.c
index af7e4d9..1802d97 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -537,9 +537,23 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
return ret;
}
+ return 0;
+}
+
+phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid)
+{
+ phys_addr_t res = memblock_alloc_nid(size, align, nid);
+
+ if (res)
+ return res;
return memblock_alloc(size, align);
}
+
+/*
+ * Remaining API functions
+ */
+
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 34/43] memblock: Separate memblock_alloc_nid() and memblock_alloc_try_nid()
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
The former is now strict, it will fail if it cannot honor the allocation
within the node, while the later implements the previous semantic which
falls back to allocating anywhere.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/sparc/mm/init_64.c | 4 ++--
include/linux/memblock.h | 6 +++++-
mm/memblock.c | 14 ++++++++++++++
3 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 0883113..dc584d2 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -820,7 +820,7 @@ static void __init allocate_node_data(int nid)
struct pglist_data *p;
#ifdef CONFIG_NEED_MULTIPLE_NODES
- paddr = memblock_alloc_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid);
+ paddr = memblock_alloc_try_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid);
if (!paddr) {
prom_printf("Cannot allocate pglist_data for nid[%d]\n", nid);
prom_halt();
@@ -840,7 +840,7 @@ static void __init allocate_node_data(int nid)
if (p->node_spanned_pages) {
num_pages = bootmem_bootmap_pages(p->node_spanned_pages);
- paddr = memblock_alloc_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid);
+ paddr = memblock_alloc_try_nid(num_pages << PAGE_SHIFT, PAGE_SIZE, nid);
if (!paddr) {
prom_printf("Cannot allocate bootmap for nid[%d]\n",
nid);
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 82b0302..c8da03e 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -50,7 +50,11 @@ extern long __init memblock_reserve(phys_addr_t base, phys_addr_t size);
/* The numa aware allocator is only available if
* CONFIG_ARCH_POPULATES_NODE_MAP is set
*/
-extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
+extern phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align,
+ int nid);
+extern phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align,
+ int nid);
+
extern phys_addr_t __init memblock_alloc(phys_addr_t size, phys_addr_t align);
/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
diff --git a/mm/memblock.c b/mm/memblock.c
index af7e4d9..1802d97 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -537,9 +537,23 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n
return ret;
}
+ return 0;
+}
+
+phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid)
+{
+ phys_addr_t res = memblock_alloc_nid(size, align, nid);
+
+ if (res)
+ return res;
return memblock_alloc(size, align);
}
+
+/*
+ * Remaining API functions
+ */
+
/* You must call memblock_analyze() before this. */
phys_addr_t __init memblock_phys_mem_size(void)
{
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 35/43] memblock: Make memblock_alloc_try_nid() fallback to MEMBLOCK_ALLOC_ANYWHERE
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
memblock_alloc_nid() used to fallback to allocating anywhere by using
memblock_alloc() as a fallback.
However, some of my previous patches limit memblock_alloc() to the region
covered by MEMBLOCK_ALLOC_ACCESSIBLE which is not quite what we want
for memblock_alloc_try_nid().
So we fix it by explicitely using MEMBLOCK_ALLOC_ANYWHERE.
Not that so far only sparc uses memblock_alloc_nid() and it hasn't been updated
to clamp the accessible zone yet. Thus the temporary "breakage" should have
no effect.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 1802d97..9de5fcd 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -546,7 +546,7 @@ phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, i
if (res)
return res;
- return memblock_alloc(size, align);
+ return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ANYWHERE);
}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 35/43] memblock: Make memblock_alloc_try_nid() fallback to MEMBLOCK_ALLOC_ANYWHERE
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
memblock_alloc_nid() used to fallback to allocating anywhere by using
memblock_alloc() as a fallback.
However, some of my previous patches limit memblock_alloc() to the region
covered by MEMBLOCK_ALLOC_ACCESSIBLE which is not quite what we want
for memblock_alloc_try_nid().
So we fix it by explicitely using MEMBLOCK_ALLOC_ANYWHERE.
Not that so far only sparc uses memblock_alloc_nid() and it hasn't been updated
to clamp the accessible zone yet. Thus the temporary "breakage" should have
no effect.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 1802d97..9de5fcd 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -546,7 +546,7 @@ phys_addr_t __init memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, i
if (res)
return res;
- return memblock_alloc(size, align);
+ return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ANYWHERE);
}
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 36/43] memblock: Add debugfs files to dump the arrays content
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 9de5fcd..cc15be2 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -16,6 +16,8 @@
#include <linux/bitops.h>
#include <linux/poison.h>
#include <linux/pfn.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#include <linux/memblock.h>
struct memblock memblock;
@@ -740,3 +742,52 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);
+#ifdef CONFIG_DEBUG_FS
+
+static int memblock_debug_show(struct seq_file *m, void *private)
+{
+ struct memblock_type *type = m->private;
+ struct memblock_region *reg;
+ int i;
+
+ for (i = 0; i < type->cnt; i++) {
+ reg = &type->regions[i];
+ seq_printf(m, "%4d: ", i);
+ if (sizeof(phys_addr_t) == 4)
+ seq_printf(m, "0x%08lx..0x%08lx\n",
+ (unsigned long)reg->base,
+ (unsigned long)(reg->base + reg->size - 1));
+ else
+ seq_printf(m, "0x%016llx..0x%016llx\n",
+ (unsigned long long)reg->base,
+ (unsigned long long)(reg->base + reg->size - 1));
+
+ }
+ return 0;
+}
+
+static int memblock_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, memblock_debug_show, inode->i_private);
+}
+
+static const struct file_operations memblock_debug_fops = {
+ .open = memblock_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init memblock_init_debugfs(void)
+{
+ struct dentry *root = debugfs_create_dir("memblock", NULL);
+ if (!root)
+ return -ENXIO;
+ debugfs_create_file("memory", S_IRUGO, root, &memblock.memory, &memblock_debug_fops);
+ debugfs_create_file("reserved", S_IRUGO, root, &memblock.reserved, &memblock_debug_fops);
+
+ return 0;
+}
+__initcall(memblock_init_debugfs);
+
+#endif /* CONFIG_DEBUG_FS */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 36/43] memblock: Add debugfs files to dump the arrays content
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 9de5fcd..cc15be2 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -16,6 +16,8 @@
#include <linux/bitops.h>
#include <linux/poison.h>
#include <linux/pfn.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#include <linux/memblock.h>
struct memblock memblock;
@@ -740,3 +742,52 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);
+#ifdef CONFIG_DEBUG_FS
+
+static int memblock_debug_show(struct seq_file *m, void *private)
+{
+ struct memblock_type *type = m->private;
+ struct memblock_region *reg;
+ int i;
+
+ for (i = 0; i < type->cnt; i++) {
+ reg = &type->regions[i];
+ seq_printf(m, "%4d: ", i);
+ if (sizeof(phys_addr_t) == 4)
+ seq_printf(m, "0x%08lx..0x%08lx\n",
+ (unsigned long)reg->base,
+ (unsigned long)(reg->base + reg->size - 1));
+ else
+ seq_printf(m, "0x%016llx..0x%016llx\n",
+ (unsigned long long)reg->base,
+ (unsigned long long)(reg->base + reg->size - 1));
+
+ }
+ return 0;
+}
+
+static int memblock_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, memblock_debug_show, inode->i_private);
+}
+
+static const struct file_operations memblock_debug_fops = {
+ .open = memblock_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init memblock_init_debugfs(void)
+{
+ struct dentry *root = debugfs_create_dir("memblock", NULL);
+ if (!root)
+ return -ENXIO;
+ debugfs_create_file("memory", S_IRUGO, root, &memblock.memory, &memblock_debug_fops);
+ debugfs_create_file("reserved", S_IRUGO, root, &memblock.reserved, &memblock_debug_fops);
+
+ return 0;
+}
+__initcall(memblock_init_debugfs);
+
+#endif /* CONFIG_DEBUG_FS */
--
1.7.0.4
--
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the body to majordomo@kvack.org. For more info on Linux MM,
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 37/43] memblock: Expose some memblock bits for use by x86
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
This exposes memblock_debug and associated memblock_dbg() macro,
along with memblock_can_resize so that x86 can use these when
ported to use memblock
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 5 +++++
mm/memblock.c | 3 ++-
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c8da03e..eed0f9b 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -39,6 +39,11 @@ struct memblock {
};
extern struct memblock memblock;
+extern int memblock_debug;
+extern int memblock_can_resize;
+
+#define memblock_dbg(fmt, ...) \
+ if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
diff --git a/mm/memblock.c b/mm/memblock.c
index cc15be2..5499ab1 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -22,7 +22,8 @@
struct memblock memblock;
-static int memblock_debug, memblock_can_resize;
+int memblock_debug;
+int memblock_can_resize;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 37/43] memblock: Expose some memblock bits for use by x86
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
This exposes memblock_debug and associated memblock_dbg() macro,
along with memblock_can_resize so that x86 can use these when
ported to use memblock
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 5 +++++
mm/memblock.c | 3 ++-
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c8da03e..eed0f9b 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -39,6 +39,11 @@ struct memblock {
};
extern struct memblock memblock;
+extern int memblock_debug;
+extern int memblock_can_resize;
+
+#define memblock_dbg(fmt, ...) \
+ if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
diff --git a/mm/memblock.c b/mm/memblock.c
index cc15be2..5499ab1 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -22,7 +22,8 @@
struct memblock memblock;
-static int memblock_debug, memblock_can_resize;
+int memblock_debug;
+int memblock_can_resize;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 38/43] memblock: Improve debug output when resizing the reserve array
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
Print out the location info in addition to which array is being
resized. Also use memblocK_dbg() to put that under control of
the memblock_debug flag.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 5499ab1..c3703ab 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -192,8 +192,6 @@ static int memblock_double_array(struct memblock_type *type)
if (!memblock_can_resize)
return -1;
- pr_debug("memblock: %s array full, doubling...", memblock_type_name(type));
-
/* Calculate new doubled size */
old_size = type->max * sizeof(struct memblock_region);
new_size = old_size << 1;
@@ -221,6 +219,9 @@ static int memblock_double_array(struct memblock_type *type)
}
new_array = __va(addr);
+ memblock_dbg("memblock: %s array is doubled to %ld at [%#010llx-%#010llx]",
+ memblock_type_name(type), type->max * 2, (u64)addr, (u64)addr + new_size - 1);
+
/* Found space, we now need to move the array over before
* we add the reserved region since it may be our reserved
* array itself that is full.
@@ -672,7 +673,7 @@ static void memblock_dump(struct memblock_type *region, char *name)
base = region->regions[i].base;
size = region->regions[i].size;
- pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
+ pr_info(" %s[%#x]\t[%#016llx-%#016llx], %#llx bytes\n",
name, i, base, base + size - 1, size);
}
}
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 38/43] memblock: Improve debug output when resizing the reserve array
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
Print out the location info in addition to which array is being
resized. Also use memblocK_dbg() to put that under control of
the memblock_debug flag.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
mm/memblock.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 5499ab1..c3703ab 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -192,8 +192,6 @@ static int memblock_double_array(struct memblock_type *type)
if (!memblock_can_resize)
return -1;
- pr_debug("memblock: %s array full, doubling...", memblock_type_name(type));
-
/* Calculate new doubled size */
old_size = type->max * sizeof(struct memblock_region);
new_size = old_size << 1;
@@ -221,6 +219,9 @@ static int memblock_double_array(struct memblock_type *type)
}
new_array = __va(addr);
+ memblock_dbg("memblock: %s array is doubled to %ld at [%#010llx-%#010llx]",
+ memblock_type_name(type), type->max * 2, (u64)addr, (u64)addr + new_size - 1);
+
/* Found space, we now need to move the array over before
* we add the reserved region since it may be our reserved
* array itself that is full.
@@ -672,7 +673,7 @@ static void memblock_dump(struct memblock_type *region, char *name)
base = region->regions[i].base;
size = region->regions[i].size;
- pr_info(" %s[0x%x]\t0x%016llx - 0x%016llx, 0x%llx bytes\n",
+ pr_info(" %s[%#x]\t[%#016llx-%#016llx], %#llx bytes\n",
name, i, base, base + size - 1, size);
}
}
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 39/43] memblock: Export MEMBLOCK_ERROR
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
will used by x86 memblock_x86_find_in_range_node and nobootmem replacement
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 3 ++-
mm/memblock.c | 2 --
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index eed0f9b..1a9c29c 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -18,7 +18,8 @@
#include <asm/memblock.h>
-#define INIT_MEMBLOCK_REGIONS 128
+#define INIT_MEMBLOCK_REGIONS 128
+#define MEMBLOCK_ERROR (~(phys_addr_t)0)
struct memblock_region {
phys_addr_t base;
diff --git a/mm/memblock.c b/mm/memblock.c
index c3703ab..85cfa1d 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -27,8 +27,6 @@ int memblock_can_resize;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
-#define MEMBLOCK_ERROR (~(phys_addr_t)0)
-
/* inline so we don't get a warning when pr_debug is compiled out */
static inline const char *memblock_type_name(struct memblock_type *type)
{
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 39/43] memblock: Export MEMBLOCK_ERROR
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
will used by x86 memblock_x86_find_in_range_node and nobootmem replacement
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 3 ++-
mm/memblock.c | 2 --
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index eed0f9b..1a9c29c 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -18,7 +18,8 @@
#include <asm/memblock.h>
-#define INIT_MEMBLOCK_REGIONS 128
+#define INIT_MEMBLOCK_REGIONS 128
+#define MEMBLOCK_ERROR (~(phys_addr_t)0)
struct memblock_region {
phys_addr_t base;
diff --git a/mm/memblock.c b/mm/memblock.c
index c3703ab..85cfa1d 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -27,8 +27,6 @@ int memblock_can_resize;
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
-#define MEMBLOCK_ERROR (~(phys_addr_t)0)
-
/* inline so we don't get a warning when pr_debug is compiled out */
static inline const char *memblock_type_name(struct memblock_type *type)
{
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 40/43] memblock: Make MEMBLOCK_ERROR be 0
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
And ensure we don't hand out 0 as a valid allocation. We put the
low limit at PAGE_SIZE arbitrarily.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 +-
mm/memblock.c | 6 ++++++
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 1a9c29c..dfa6449 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -19,7 +19,7 @@
#include <asm/memblock.h>
#define INIT_MEMBLOCK_REGIONS 128
-#define MEMBLOCK_ERROR (~(phys_addr_t)0)
+#define MEMBLOCK_ERROR 0
struct memblock_region {
phys_addr_t base;
diff --git a/mm/memblock.c b/mm/memblock.c
index 85cfa1d..cb520df 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -105,6 +105,12 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en
phys_addr_t base, res_base;
long j;
+ /* Prevent allocations returning 0 as it's also used to
+ * indicate an allocation failure
+ */
+ if (start == 0)
+ start = PAGE_SIZE;
+
base = memblock_align_down((end - size), align);
while (start <= base) {
j = memblock_overlaps_region(&memblock.reserved, base, size);
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 40/43] memblock: Make MEMBLOCK_ERROR be 0
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Benjamin Herrenschmidt
And ensure we don't hand out 0 as a valid allocation. We put the
low limit at PAGE_SIZE arbitrarily.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 +-
mm/memblock.c | 6 ++++++
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 1a9c29c..dfa6449 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -19,7 +19,7 @@
#include <asm/memblock.h>
#define INIT_MEMBLOCK_REGIONS 128
-#define MEMBLOCK_ERROR (~(phys_addr_t)0)
+#define MEMBLOCK_ERROR 0
struct memblock_region {
phys_addr_t base;
diff --git a/mm/memblock.c b/mm/memblock.c
index 85cfa1d..cb520df 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -105,6 +105,12 @@ static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t en
phys_addr_t base, res_base;
long j;
+ /* Prevent allocations returning 0 as it's also used to
+ * indicate an allocation failure
+ */
+ if (start == 0)
+ start = PAGE_SIZE;
+
base = memblock_align_down((end - size), align);
while (start <= base) {
j = memblock_overlaps_region(&memblock.reserved, base, size);
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 41/43] memblock: Protect memblock.h with CONFIG_HAVE_MEMBLOCK
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
This should make it easier to catch/debug incorrect use when
the CONFIG_ option isn't set.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index dfa6449..c24b278 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -2,6 +2,7 @@
#define _LINUX_MEMBLOCK_H
#ifdef __KERNEL__
+#ifdef CONFIG_HAVE_MEMBLOCK
/*
* Logical memory blocks.
*
@@ -148,6 +149,8 @@ static inline unsigned long memblock_region_pages(const struct memblock_region *
region++)
+#endif /* CONFIG_HAVE_MEMBLOCK */
+
#endif /* __KERNEL__ */
#endif /* _LINUX_MEMBLOCK_H */
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 41/43] memblock: Protect memblock.h with CONFIG_HAVE_MEMBLOCK
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
This should make it easier to catch/debug incorrect use when
the CONFIG_ option isn't set.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index dfa6449..c24b278 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -2,6 +2,7 @@
#define _LINUX_MEMBLOCK_H
#ifdef __KERNEL__
+#ifdef CONFIG_HAVE_MEMBLOCK
/*
* Logical memory blocks.
*
@@ -148,6 +149,8 @@ static inline unsigned long memblock_region_pages(const struct memblock_region *
region++)
+#endif /* CONFIG_HAVE_MEMBLOCK */
+
#endif /* __KERNEL__ */
#endif /* _LINUX_MEMBLOCK_H */
--
1.7.0.4
--
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 42/43] memblock: Option for the architecture to put memblock into the .init section
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
Arch code can define ARCH_DISCARD_MEMBLOCK in asm/memblock.h,
which in turns causes memblock code and data to go respectively
into the .init and .initdata sections. This will be used by the
x86 architecture.
If ARCH_DISCARD_MEMBLOCK is defined, the debugfs files to inspect
the memblock arrays after boot are not created.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 8 +++++++
mm/memblock.c | 48 +++++++++++++++++++++++-----------------------
2 files changed, 32 insertions(+), 24 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c24b278..3978e6a 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -149,6 +149,14 @@ static inline unsigned long memblock_region_pages(const struct memblock_region *
region++)
+#ifdef ARCH_DISCARD_MEMBLOCK
+#define __init_memblock __init
+#define __initdata_memblock __initdata
+#else
+#define __init_memblock
+#define __initdata_memblock
+#endif
+
#endif /* CONFIG_HAVE_MEMBLOCK */
#endif /* __KERNEL__ */
diff --git a/mm/memblock.c b/mm/memblock.c
index cb520df..a17faea 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -20,12 +20,12 @@
#include <linux/seq_file.h>
#include <linux/memblock.h>
-struct memblock memblock;
+struct memblock memblock __initdata_memblock;
-int memblock_debug;
-int memblock_can_resize;
-static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
-static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
+int memblock_debug __initdata_memblock;
+int memblock_can_resize __initdata_memblock;
+static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1] __initdata_memblock;
+static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1] __initdata_memblock;
/* inline so we don't get a warning when pr_debug is compiled out */
static inline const char *memblock_type_name(struct memblock_type *type)
@@ -42,23 +42,23 @@ static inline const char *memblock_type_name(struct memblock_type *type)
* Address comparison utilities
*/
-static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
+static phys_addr_t __init_memblock memblock_align_down(phys_addr_t addr, phys_addr_t size)
{
return addr & ~(size - 1);
}
-static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
+static phys_addr_t __init_memblock memblock_align_up(phys_addr_t addr, phys_addr_t size)
{
return (addr + (size - 1)) & ~(size - 1);
}
-static unsigned long memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
+static unsigned long __init_memblock memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
phys_addr_t base2, phys_addr_t size2)
{
return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
}
-static long memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
+static long __init_memblock memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
phys_addr_t base2, phys_addr_t size2)
{
if (base2 == base1 + size1)
@@ -69,7 +69,7 @@ static long memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
return 0;
}
-static long memblock_regions_adjacent(struct memblock_type *type,
+static long __init_memblock memblock_regions_adjacent(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
phys_addr_t base1 = type->regions[r1].base;
@@ -80,7 +80,7 @@ static long memblock_regions_adjacent(struct memblock_type *type,
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
-long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long i;
@@ -162,7 +162,7 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align
return MEMBLOCK_ERROR;
}
-static void memblock_remove_region(struct memblock_type *type, unsigned long r)
+static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
@@ -174,7 +174,7 @@ static void memblock_remove_region(struct memblock_type *type, unsigned long r)
}
/* Assumption: base addr of region 1 < base addr of region 2 */
-static void memblock_coalesce_regions(struct memblock_type *type,
+static void __init_memblock memblock_coalesce_regions(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
type->regions[r1].size += type->regions[r2].size;
@@ -184,7 +184,7 @@ static void memblock_coalesce_regions(struct memblock_type *type,
/* Defined below but needed now */
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size);
-static int memblock_double_array(struct memblock_type *type)
+static int __init_memblock memblock_double_array(struct memblock_type *type)
{
struct memblock_region *new_array, *old_array;
phys_addr_t old_size, new_size, addr;
@@ -255,13 +255,13 @@ static int memblock_double_array(struct memblock_type *type)
return 0;
}
-extern int __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
+extern int __init_memblock __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
phys_addr_t addr2, phys_addr_t size2)
{
return 1;
}
-static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+static long __init_memblock memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
long adjacent, i;
@@ -348,13 +348,13 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
return 0;
}
-long memblock_add(phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_add(phys_addr_t base, phys_addr_t size)
{
return memblock_add_region(&memblock.memory, base, size);
}
-static long __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+static long __init_memblock __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
phys_addr_t rgnbegin, rgnend;
phys_addr_t end = base + size;
@@ -402,7 +402,7 @@ static long __memblock_remove(struct memblock_type *type, phys_addr_t base, phys
return memblock_add_region(type, end, rgnend - end);
}
-long memblock_remove(phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_remove(phys_addr_t base, phys_addr_t size)
{
return __memblock_remove(&memblock.memory, base, size);
}
@@ -568,7 +568,7 @@ phys_addr_t __init memblock_phys_mem_size(void)
return memblock.memory_size;
}
-phys_addr_t memblock_end_of_DRAM(void)
+phys_addr_t __init_memblock memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;
@@ -655,7 +655,7 @@ int memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
memblock.reserved.regions[idx].size) >= (base + size);
}
-int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size)
+int __init_memblock memblock_is_region_reserved(phys_addr_t base, phys_addr_t size)
{
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
@@ -666,7 +666,7 @@ void __init memblock_set_current_limit(phys_addr_t limit)
memblock.current_limit = limit;
}
-static void memblock_dump(struct memblock_type *region, char *name)
+static void __init_memblock memblock_dump(struct memblock_type *region, char *name)
{
unsigned long long base, size;
int i;
@@ -682,7 +682,7 @@ static void memblock_dump(struct memblock_type *region, char *name)
}
}
-void memblock_dump_all(void)
+void __init_memblock memblock_dump_all(void)
{
if (!memblock_debug)
return;
@@ -748,7 +748,7 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);
-#ifdef CONFIG_DEBUG_FS
+#if defined(CONFIG_DEBUG_FS) && !defined(ARCH_DISCARD_MEMBLOCK)
static int memblock_debug_show(struct seq_file *m, void *private)
{
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 42/43] memblock: Option for the architecture to put memblock into the .init section
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
Arch code can define ARCH_DISCARD_MEMBLOCK in asm/memblock.h,
which in turns causes memblock code and data to go respectively
into the .init and .initdata sections. This will be used by the
x86 architecture.
If ARCH_DISCARD_MEMBLOCK is defined, the debugfs files to inspect
the memblock arrays after boot are not created.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 8 +++++++
mm/memblock.c | 48 +++++++++++++++++++++++-----------------------
2 files changed, 32 insertions(+), 24 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index c24b278..3978e6a 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -149,6 +149,14 @@ static inline unsigned long memblock_region_pages(const struct memblock_region *
region++)
+#ifdef ARCH_DISCARD_MEMBLOCK
+#define __init_memblock __init
+#define __initdata_memblock __initdata
+#else
+#define __init_memblock
+#define __initdata_memblock
+#endif
+
#endif /* CONFIG_HAVE_MEMBLOCK */
#endif /* __KERNEL__ */
diff --git a/mm/memblock.c b/mm/memblock.c
index cb520df..a17faea 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -20,12 +20,12 @@
#include <linux/seq_file.h>
#include <linux/memblock.h>
-struct memblock memblock;
+struct memblock memblock __initdata_memblock;
-int memblock_debug;
-int memblock_can_resize;
-static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
-static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
+int memblock_debug __initdata_memblock;
+int memblock_can_resize __initdata_memblock;
+static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1] __initdata_memblock;
+static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1] __initdata_memblock;
/* inline so we don't get a warning when pr_debug is compiled out */
static inline const char *memblock_type_name(struct memblock_type *type)
@@ -42,23 +42,23 @@ static inline const char *memblock_type_name(struct memblock_type *type)
* Address comparison utilities
*/
-static phys_addr_t memblock_align_down(phys_addr_t addr, phys_addr_t size)
+static phys_addr_t __init_memblock memblock_align_down(phys_addr_t addr, phys_addr_t size)
{
return addr & ~(size - 1);
}
-static phys_addr_t memblock_align_up(phys_addr_t addr, phys_addr_t size)
+static phys_addr_t __init_memblock memblock_align_up(phys_addr_t addr, phys_addr_t size)
{
return (addr + (size - 1)) & ~(size - 1);
}
-static unsigned long memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
+static unsigned long __init_memblock memblock_addrs_overlap(phys_addr_t base1, phys_addr_t size1,
phys_addr_t base2, phys_addr_t size2)
{
return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
}
-static long memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
+static long __init_memblock memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
phys_addr_t base2, phys_addr_t size2)
{
if (base2 == base1 + size1)
@@ -69,7 +69,7 @@ static long memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
return 0;
}
-static long memblock_regions_adjacent(struct memblock_type *type,
+static long __init_memblock memblock_regions_adjacent(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
phys_addr_t base1 = type->regions[r1].base;
@@ -80,7 +80,7 @@ static long memblock_regions_adjacent(struct memblock_type *type,
return memblock_addrs_adjacent(base1, size1, base2, size2);
}
-long memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long i;
@@ -162,7 +162,7 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align
return MEMBLOCK_ERROR;
}
-static void memblock_remove_region(struct memblock_type *type, unsigned long r)
+static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
@@ -174,7 +174,7 @@ static void memblock_remove_region(struct memblock_type *type, unsigned long r)
}
/* Assumption: base addr of region 1 < base addr of region 2 */
-static void memblock_coalesce_regions(struct memblock_type *type,
+static void __init_memblock memblock_coalesce_regions(struct memblock_type *type,
unsigned long r1, unsigned long r2)
{
type->regions[r1].size += type->regions[r2].size;
@@ -184,7 +184,7 @@ static void memblock_coalesce_regions(struct memblock_type *type,
/* Defined below but needed now */
static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size);
-static int memblock_double_array(struct memblock_type *type)
+static int __init_memblock memblock_double_array(struct memblock_type *type)
{
struct memblock_region *new_array, *old_array;
phys_addr_t old_size, new_size, addr;
@@ -255,13 +255,13 @@ static int memblock_double_array(struct memblock_type *type)
return 0;
}
-extern int __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
+extern int __init_memblock __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
phys_addr_t addr2, phys_addr_t size2)
{
return 1;
}
-static long memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+static long __init_memblock memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
unsigned long coalesced = 0;
long adjacent, i;
@@ -348,13 +348,13 @@ static long memblock_add_region(struct memblock_type *type, phys_addr_t base, ph
return 0;
}
-long memblock_add(phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_add(phys_addr_t base, phys_addr_t size)
{
return memblock_add_region(&memblock.memory, base, size);
}
-static long __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+static long __init_memblock __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
{
phys_addr_t rgnbegin, rgnend;
phys_addr_t end = base + size;
@@ -402,7 +402,7 @@ static long __memblock_remove(struct memblock_type *type, phys_addr_t base, phys
return memblock_add_region(type, end, rgnend - end);
}
-long memblock_remove(phys_addr_t base, phys_addr_t size)
+long __init_memblock memblock_remove(phys_addr_t base, phys_addr_t size)
{
return __memblock_remove(&memblock.memory, base, size);
}
@@ -568,7 +568,7 @@ phys_addr_t __init memblock_phys_mem_size(void)
return memblock.memory_size;
}
-phys_addr_t memblock_end_of_DRAM(void)
+phys_addr_t __init_memblock memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;
@@ -655,7 +655,7 @@ int memblock_is_region_memory(phys_addr_t base, phys_addr_t size)
memblock.reserved.regions[idx].size) >= (base + size);
}
-int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size)
+int __init_memblock memblock_is_region_reserved(phys_addr_t base, phys_addr_t size)
{
return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
}
@@ -666,7 +666,7 @@ void __init memblock_set_current_limit(phys_addr_t limit)
memblock.current_limit = limit;
}
-static void memblock_dump(struct memblock_type *region, char *name)
+static void __init_memblock memblock_dump(struct memblock_type *region, char *name)
{
unsigned long long base, size;
int i;
@@ -682,7 +682,7 @@ static void memblock_dump(struct memblock_type *region, char *name)
}
}
-void memblock_dump_all(void)
+void __init_memblock memblock_dump_all(void)
{
if (!memblock_debug)
return;
@@ -748,7 +748,7 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);
-#ifdef CONFIG_DEBUG_FS
+#if defined(CONFIG_DEBUG_FS) && !defined(ARCH_DISCARD_MEMBLOCK)
static int memblock_debug_show(struct seq_file *m, void *private)
{
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply related [flat|nested] 113+ messages in thread
* [PATCH 43/43] memblock: Add memblock_find_in_range()
2010-08-06 5:14 ` Benjamin Herrenschmidt
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
This is a wrapper for memblock_find_base() using slightly different
arguments (start,end instead of start,size for example) in order to
make it easier to convert existing arch/x86 code.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 ++
mm/memblock.c | 8 ++++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 3978e6a..4df09bd 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -47,6 +47,8 @@ extern int memblock_can_resize;
#define memblock_dbg(fmt, ...) \
if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
+u64 memblock_find_in_range(u64 start, u64 end, u64 size, u64 align);
+
extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
extern long memblock_add(phys_addr_t base, phys_addr_t size);
diff --git a/mm/memblock.c b/mm/memblock.c
index a17faea..b7ab10a 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -162,6 +162,14 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align
return MEMBLOCK_ERROR;
}
+/*
+ * Find a free area with specified alignment in a specific range.
+ */
+u64 __init_memblock memblock_find_in_range(u64 start, u64 end, u64 size, u64 align)
+{
+ return memblock_find_base(size, align, start, end);
+}
+
static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 113+ messages in thread* [PATCH 43/43] memblock: Add memblock_find_in_range()
@ 2010-08-06 5:15 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 113+ messages in thread
From: Benjamin Herrenschmidt @ 2010-08-06 5:15 UTC (permalink / raw)
To: linux-kernel; +Cc: linux-mm, torvalds, Yinghai Lu, Benjamin Herrenschmidt
From: Yinghai Lu <yinghai@kernel.org>
This is a wrapper for memblock_find_base() using slightly different
arguments (start,end instead of start,size for example) in order to
make it easier to convert existing arch/x86 code.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
include/linux/memblock.h | 2 ++
mm/memblock.c | 8 ++++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 3978e6a..4df09bd 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -47,6 +47,8 @@ extern int memblock_can_resize;
#define memblock_dbg(fmt, ...) \
if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
+u64 memblock_find_in_range(u64 start, u64 end, u64 size, u64 align);
+
extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
extern long memblock_add(phys_addr_t base, phys_addr_t size);
diff --git a/mm/memblock.c b/mm/memblock.c
index a17faea..b7ab10a 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -162,6 +162,14 @@ static phys_addr_t __init memblock_find_base(phys_addr_t size, phys_addr_t align
return MEMBLOCK_ERROR;
}
+/*
+ * Find a free area with specified alignment in a specific range.
+ */
+u64 __init_memblock memblock_find_in_range(u64 start, u64 end, u64 size, u64 align)
+{
+ return memblock_find_base(size, align, start, end);
+}
+
static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r)
{
unsigned long i;
--
1.7.0.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
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^ permalink raw reply related [flat|nested] 113+ messages in thread