From: Mike Rapoport <rppt@linux.vnet.ibm.com>
To: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
"David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Ingo Molnar <mingo@redhat.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Michal Hocko <mhocko@suse.com>,
Paul Burton <paul.burton@mips.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tony Luck <tony.luck@intel.com>,
linux-ia64@vger.kernel.org, linux-mips@linux-mips.org,
linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org,
linux-kernel@vger.kernel.org,
Mike Rapoport <rppt@linux.vnet.ibm.com>
Subject: [RFC PATCH 27/29] mm: remove nobootmem
Date: Wed, 5 Sep 2018 18:59:42 +0300 [thread overview]
Message-ID: <1536163184-26356-28-git-send-email-rppt@linux.vnet.ibm.com> (raw)
In-Reply-To: <1536163184-26356-1-git-send-email-rppt@linux.vnet.ibm.com>
Move a few remaining functions from nobootmem.c to memblock.c and remove
nobootmem
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
---
mm/Makefile | 1 -
mm/memblock.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++
mm/nobootmem.c | 128 ---------------------------------------------------------
3 files changed, 104 insertions(+), 129 deletions(-)
delete mode 100644 mm/nobootmem.c
diff --git a/mm/Makefile b/mm/Makefile
index 0a3e72e..fb96c45 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -42,7 +42,6 @@ obj-y := filemap.o mempool.o oom_kill.o fadvise.o \
debug.o $(mmu-y)
obj-y += init-mm.o
-obj-y += nobootmem.o
obj-y += memblock.o
ifdef CONFIG_MMU
diff --git a/mm/memblock.c b/mm/memblock.c
index 55d7d50..3f76d40 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -82,6 +82,16 @@
* initialization compltes.
*/
+#ifndef CONFIG_NEED_MULTIPLE_NODES
+struct pglist_data __refdata contig_page_data;
+EXPORT_SYMBOL(contig_page_data);
+#endif
+
+unsigned long max_low_pfn;
+unsigned long min_low_pfn;
+unsigned long max_pfn;
+unsigned long long max_possible_pfn;
+
static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock;
static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock;
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
@@ -1959,6 +1969,100 @@ static int __init early_memblock(char *p)
}
early_param("memblock", early_memblock);
+static void __init __free_pages_memory(unsigned long start, unsigned long end)
+{
+ int order;
+
+ while (start < end) {
+ order = min(MAX_ORDER - 1UL, __ffs(start));
+
+ while (start + (1UL << order) > end)
+ order--;
+
+ memblock_free_pages(pfn_to_page(start), start, order);
+
+ start += (1UL << order);
+ }
+}
+
+static unsigned long __init __free_memory_core(phys_addr_t start,
+ phys_addr_t end)
+{
+ unsigned long start_pfn = PFN_UP(start);
+ unsigned long end_pfn = min_t(unsigned long,
+ PFN_DOWN(end), max_low_pfn);
+
+ if (start_pfn >= end_pfn)
+ return 0;
+
+ __free_pages_memory(start_pfn, end_pfn);
+
+ return end_pfn - start_pfn;
+}
+
+static unsigned long __init free_low_memory_core_early(void)
+{
+ unsigned long count = 0;
+ phys_addr_t start, end;
+ u64 i;
+
+ memblock_clear_hotplug(0, -1);
+
+ for_each_reserved_mem_region(i, &start, &end)
+ reserve_bootmem_region(start, end);
+
+ /*
+ * We need to use NUMA_NO_NODE instead of NODE_DATA(0)->node_id
+ * because in some case like Node0 doesn't have RAM installed
+ * low ram will be on Node1
+ */
+ for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, &start, &end,
+ NULL)
+ count += __free_memory_core(start, end);
+
+ return count;
+}
+
+static int reset_managed_pages_done __initdata;
+
+void reset_node_managed_pages(pg_data_t *pgdat)
+{
+ struct zone *z;
+
+ for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++)
+ z->managed_pages = 0;
+}
+
+void __init reset_all_zones_managed_pages(void)
+{
+ struct pglist_data *pgdat;
+
+ if (reset_managed_pages_done)
+ return;
+
+ for_each_online_pgdat(pgdat)
+ reset_node_managed_pages(pgdat);
+
+ reset_managed_pages_done = 1;
+}
+
+/**
+ * memblock_free_all - release free pages to the buddy allocator
+ *
+ * Return: the number of pages actually released.
+ */
+unsigned long __init memblock_free_all(void)
+{
+ unsigned long pages;
+
+ reset_all_zones_managed_pages();
+
+ pages = free_low_memory_core_early();
+ totalram_pages += pages;
+
+ return pages;
+}
+
#if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_ARCH_DISCARD_MEMBLOCK)
static int memblock_debug_show(struct seq_file *m, void *private)
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
deleted file mode 100644
index 9608bc5..0000000
--- a/mm/nobootmem.c
+++ /dev/null
@@ -1,128 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * bootmem - A boot-time physical memory allocator and configurator
- *
- * Copyright (C) 1999 Ingo Molnar
- * 1999 Kanoj Sarcar, SGI
- * 2008 Johannes Weiner
- *
- * Access to this subsystem has to be serialized externally (which is true
- * for the boot process anyway).
- */
-#include <linux/init.h>
-#include <linux/pfn.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/kmemleak.h>
-#include <linux/range.h>
-#include <linux/memblock.h>
-#include <linux/bootmem.h>
-
-#include <asm/bug.h>
-#include <asm/io.h>
-
-#include "internal.h"
-
-#ifndef CONFIG_NEED_MULTIPLE_NODES
-struct pglist_data __refdata contig_page_data;
-EXPORT_SYMBOL(contig_page_data);
-#endif
-
-unsigned long max_low_pfn;
-unsigned long min_low_pfn;
-unsigned long max_pfn;
-unsigned long long max_possible_pfn;
-
-static void __init __free_pages_memory(unsigned long start, unsigned long end)
-{
- int order;
-
- while (start < end) {
- order = min(MAX_ORDER - 1UL, __ffs(start));
-
- while (start + (1UL << order) > end)
- order--;
-
- memblock_free_pages(pfn_to_page(start), start, order);
-
- start += (1UL << order);
- }
-}
-
-static unsigned long __init __free_memory_core(phys_addr_t start,
- phys_addr_t end)
-{
- unsigned long start_pfn = PFN_UP(start);
- unsigned long end_pfn = min_t(unsigned long,
- PFN_DOWN(end), max_low_pfn);
-
- if (start_pfn >= end_pfn)
- return 0;
-
- __free_pages_memory(start_pfn, end_pfn);
-
- return end_pfn - start_pfn;
-}
-
-static unsigned long __init free_low_memory_core_early(void)
-{
- unsigned long count = 0;
- phys_addr_t start, end;
- u64 i;
-
- memblock_clear_hotplug(0, -1);
-
- for_each_reserved_mem_region(i, &start, &end)
- reserve_bootmem_region(start, end);
-
- /*
- * We need to use NUMA_NO_NODE instead of NODE_DATA(0)->node_id
- * because in some case like Node0 doesn't have RAM installed
- * low ram will be on Node1
- */
- for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, &start, &end,
- NULL)
- count += __free_memory_core(start, end);
-
- return count;
-}
-
-static int reset_managed_pages_done __initdata;
-
-void reset_node_managed_pages(pg_data_t *pgdat)
-{
- struct zone *z;
-
- for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++)
- z->managed_pages = 0;
-}
-
-void __init reset_all_zones_managed_pages(void)
-{
- struct pglist_data *pgdat;
-
- if (reset_managed_pages_done)
- return;
-
- for_each_online_pgdat(pgdat)
- reset_node_managed_pages(pgdat);
-
- reset_managed_pages_done = 1;
-}
-
-/**
- * memblock_free_all - release free pages to the buddy allocator
- *
- * Return: the number of pages actually released.
- */
-unsigned long __init memblock_free_all(void)
-{
- unsigned long pages;
-
- reset_all_zones_managed_pages();
-
- pages = free_low_memory_core_early();
- totalram_pages += pages;
-
- return pages;
-}
--
2.7.4
next prev parent reply other threads:[~2018-09-05 16:06 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-05 15:59 [RFC PATCH 00/29] mm: remove bootmem allocator Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 01/29] mips: switch to NO_BOOTMEM Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 02/29] mm: remove CONFIG_NO_BOOTMEM Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 03/29] mm: remove CONFIG_HAVE_MEMBLOCK Mike Rapoport
2018-09-19 9:04 ` Jonathan Cameron
2018-09-19 9:04 ` Jonathan Cameron
2018-09-19 10:34 ` Mike Rapoport
2018-09-19 10:45 ` Jonathan Cameron
2018-09-19 10:45 ` Jonathan Cameron
2018-09-19 10:55 ` Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 04/29] mm: remove bootmem allocator implementation Mike Rapoport
2018-09-06 7:30 ` Michal Hocko
2018-09-06 8:31 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 05/29] mm: nobootmem: remove dead code Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 06/29] memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc* Mike Rapoport
2018-09-06 7:35 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 07/29] memblock: remove _virt from APIs returning virtual address Mike Rapoport
2018-09-05 17:04 ` Rob Herring
2018-09-05 17:20 ` Mike Rapoport
2018-09-06 7:28 ` Michal Hocko
2018-09-06 12:43 ` Mike Rapoport
2018-09-06 13:01 ` Michal Hocko
2018-09-06 13:39 ` Mike Rapoport
2018-09-06 13:46 ` Michal Hocko
2018-09-07 8:42 ` Mike Rapoport
2018-09-07 8:47 ` Michal Hocko
2018-09-07 9:19 ` Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 08/29] memblock: replace alloc_bootmem_align with memblock_alloc Mike Rapoport
2018-09-06 7:39 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 09/29] memblock: replace alloc_bootmem_low with memblock_alloc_low Mike Rapoport
2018-09-06 7:41 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 10/29] memblock: replace __alloc_bootmem_node_nopanic with memblock_alloc_try_nid_nopanic Mike Rapoport
2018-09-06 7:49 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 11/29] memblock: replace alloc_bootmem_pages_nopanic with memblock_alloc_nopanic Mike Rapoport
2018-09-06 7:53 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 12/29] memblock: replace alloc_bootmem_low with memblock_alloc_low Mike Rapoport
2018-09-06 7:55 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 13/29] memblock: replace __alloc_bootmem_nopanic with memblock_alloc_from_nopanic Mike Rapoport
2018-09-06 7:57 ` Michal Hocko
2018-09-06 12:44 ` Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 14/29] memblock: add align parameter to memblock_alloc_node() Mike Rapoport
2018-09-06 8:06 ` Michal Hocko
2018-09-06 12:49 ` Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 15/29] memblock: replace alloc_bootmem_pages_node with memblock_alloc_node Mike Rapoport
2018-09-06 8:08 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 16/29] memblock: replace __alloc_bootmem_node with appropriate memblock_ API Mike Rapoport
2018-09-06 8:38 ` Michal Hocko
2018-09-06 12:50 ` Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 17/29] memblock: replace alloc_bootmem_node with memblock_alloc_node Mike Rapoport
2018-09-06 8:41 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 18/29] memblock: replace alloc_bootmem_low_pages with memblock_alloc_low Mike Rapoport
2018-09-06 8:43 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 19/29] memblock: replace alloc_bootmem_pages with memblock_alloc Mike Rapoport
2018-09-06 8:44 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 20/29] memblock: replace __alloc_bootmem with memblock_alloc_from Mike Rapoport
2018-09-06 8:52 ` Michal Hocko
2018-09-06 12:58 ` Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 21/29] memblock: replace alloc_bootmem with memblock_alloc Mike Rapoport
2018-09-06 8:55 ` Michal Hocko
2018-09-06 13:14 ` Mike Rapoport
2018-09-05 15:59 ` [RFC PATCH 22/29] mm: nobootmem: remove bootmem allocation APIs Mike Rapoport
2018-09-06 8:56 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 23/29] memblock: replace free_bootmem{_node} with memblock_free Mike Rapoport
2018-09-06 8:57 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 24/29] memblock: replace free_bootmem_late with memblock_free_late Mike Rapoport
2018-09-06 9:02 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 25/29] memblock: rename free_all_bootmem to memblock_free_all Mike Rapoport
2018-09-06 9:04 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 26/29] memblock: rename __free_pages_bootmem to memblock_free_pages Mike Rapoport
2018-09-06 9:06 ` Michal Hocko
2018-09-05 15:59 ` Mike Rapoport [this message]
2018-09-06 9:08 ` [RFC PATCH 27/29] mm: remove nobootmem Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 28/29] memblock: replace BOOTMEM_ALLOC_* with MEMBLOCK variants Mike Rapoport
2018-09-06 9:08 ` Michal Hocko
2018-09-05 15:59 ` [RFC PATCH 29/29] mm: remove include/linux/bootmem.h Mike Rapoport
2018-09-06 2:33 ` [RFC PATCH 00/29] mm: remove bootmem allocator Greentime Hu
2018-09-06 13:30 ` Mike Rapoport
2018-09-06 9:15 ` Michal Hocko
2018-09-06 13:04 ` Pasha Tatashin
2018-09-06 13:21 ` Mike Rapoport
2018-09-06 13:16 ` Mike Rapoport
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