linux-next: sched tree build warning

linux-next: sched tree build warning

[Stephen Rothwell]

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Hi all,

Today's linux-next build (powerpc ppc64_defconfig) produced this new
warning:

fs/proc/base.c: In function 'proc_pid_schedstat':
fs/proc/base.c:352: warning: format '%llu' expects type 'long long unsigned int', but argument 3 has type 'u64'

Introduced by commit 9c2c48020ec0dd6ecd27e5a1298f73b40d85a595
("schedstat: consolidate per-task cpu runtime stats").

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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Re: linux-next: sched tree build warning

[Ingo Molnar]

* Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> Hi all,
> 
> Today's linux-next build (powerpc ppc64_defconfig) produced this new
> warning:
> 
> fs/proc/base.c: In function 'proc_pid_schedstat':
> fs/proc/base.c:352: warning: format '%llu' expects type 'long long unsigned int', but argument 3 has type 'u64'
> 
> Introduced by commit 9c2c48020ec0dd6ecd27e5a1298f73b40d85a595
> ("schedstat: consolidate per-task cpu runtime stats").

that should be harmless - fix below.

Given that all these warnings generated by asm-generic/int-l64.h are 
bogus, all the time - the right and clean fix is to change the 
architectures that use it (s390, mips, ia64, sparc, powerpc, alpha) to 
asm-generic/int-ll64.h. It will break nothing - there will only be a 
one-time conversion to avoid similar build warnings.

	Ingo

----------------->
>From 826e08b0157c0ce8a80dfe3c0a6c5a1540dd0b1d Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 22 Dec 2008 07:37:41 +0100
Subject: [PATCH] sched: fix warning in fs/proc/base.c

Stephen Rothwell reported this new (harmless) build warning on platforms that
define u64 to long:

 fs/proc/base.c: In function 'proc_pid_schedstat':
 fs/proc/base.c:352: warning: format '%llu' expects type 'long long unsigned int', but argument 3 has type 'u64'

asm-generic/int-l64.h platforms strike again: that file should be eliminated.

Fix it by casting the parameters to long long.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 fs/proc/base.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 4d745ba..a48200c 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -347,8 +347,8 @@ static int proc_pid_wchan(struct task_struct *task, char *buffer)
 static int proc_pid_schedstat(struct task_struct *task, char *buffer)
 {
 	return sprintf(buffer, "%llu %llu %lu\n",
-			task->se.sum_exec_runtime,
-			task->sched_info.run_delay,
+			(unsigned long long)task->se.sum_exec_runtime,
+			(unsigned long long)task->sched_info.run_delay,
 			task->sched_info.pcount);
 }
 #endif

Re: linux-next: sched tree build warning

[Ken Chen]

On Sun, Dec 21, 2008 at 8:22 PM, Stephen Rothwell wrote:
> Hi all,
>
> Today's linux-next build (powerpc ppc64_defconfig) produced this new
> warning:
>
> fs/proc/base.c: In function 'proc_pid_schedstat':
> fs/proc/base.c:352: warning: format '%llu' expects type 'long long unsigned int',
> but argument 3 has type 'u64'
>
> Introduced by commit 9c2c48020ec0dd6ecd27e5a1298f73b40d85a595
> ("schedstat: consolidate per-task cpu runtime stats").

oh boy, this is the 2nd time that printing u64 bite me, I really need
to get hold of a machine that is non-x86_64.

Just saw Ingo's patch came in while I'm typing this email.  Thank you
Ingo for fixing this.

- Ken

Re: linux-next: sched tree build warning

[Ingo Molnar]

* Ken Chen <kenchen@google.com> wrote:

> On Sun, Dec 21, 2008 at 8:22 PM, Stephen Rothwell wrote:
> > Hi all,
> >
> > Today's linux-next build (powerpc ppc64_defconfig) produced this new
> > warning:
> >
> > fs/proc/base.c: In function 'proc_pid_schedstat':
> > fs/proc/base.c:352: warning: format '%llu' expects type 'long long unsigned int',
> > but argument 3 has type 'u64'
> >
> > Introduced by commit 9c2c48020ec0dd6ecd27e5a1298f73b40d85a595
> > ("schedstat: consolidate per-task cpu runtime stats").
> 
> oh boy, this is the 2nd time that printing u64 bite me, I really need to 
> get hold of a machine that is non-x86_64.
> 
> Just saw Ingo's patch came in while I'm typing this email.  Thank you 
> Ingo for fixing this.

the real solution is something like the patch below. That generates new 
(but harmless) warnings within the powerpc code but those are a one-off 
effort to fix and are not reoccuring.

Cc:-ed Paul Mackerras - Paul, am i missing anything?

	Ingo

--------------->
>From 3d835af97da5b6cb755ca4f8464f8e636cc321da Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 22 Dec 2008 08:02:06 +0100
Subject: [PATCH] powerpc: fix u64

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/powerpc/include/asm/types.h |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/include/asm/types.h b/arch/powerpc/include/asm/types.h
index c004c13..1cbfd7f 100644
--- a/arch/powerpc/include/asm/types.h
+++ b/arch/powerpc/include/asm/types.h
@@ -1,11 +1,7 @@
 #ifndef _ASM_POWERPC_TYPES_H
 #define _ASM_POWERPC_TYPES_H
 
-#ifdef __powerpc64__
-# include <asm-generic/int-l64.h>
-#else
-# include <asm-generic/int-ll64.h>
-#endif
+#include <asm-generic/int-ll64.h>
 
 #ifndef __ASSEMBLY__
 

Re: linux-next: sched tree build warning

[Stephen Rothwell]

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Hi Ingo,

On Mon, 22 Dec 2008 08:04:26 +0100 Ingo Molnar <mingo@elte.hu> wrote:
>
> the real solution is something like the patch below. That generates new 
> (but harmless) warnings within the powerpc code but those are a one-off 
> effort to fix and are not reoccuring.
> 
> Cc:-ed Paul Mackerras - Paul, am i missing anything?

You mean besides the patches that fix all those warnings? :-)

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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[patch] powerpc: change u64/s64 to a long long integer type

[Ingo Molnar]

* Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> Hi Ingo,
> 
> On Mon, 22 Dec 2008 08:04:26 +0100 Ingo Molnar <mingo@elte.hu> wrote:
> >
> > the real solution is something like the patch below. That generates new 
> > (but harmless) warnings within the powerpc code but those are a one-off 
> > effort to fix and are not reoccuring.
> > 
> > Cc:-ed Paul Mackerras - Paul, am i missing anything?
> 
> You mean besides the patches that fix all those warnings? :-)

i thought you as a PowerPC person would be more suited to fix them than 
me.

but it took me 30 minutes - much less than the total time just i had to 
spend on similar issues in the past. So this patch will be a real 
time-saver and it should have been done years ago.

Tested on ppc64-defconfig - i guess there's more to it but similarly 
trivial.

	Ingo

----------------------->
Subject: powerpc: change u64/s64 to a long long integer type
From: Ingo Molnar <mingo@elte.hu>
Date: Mon Dec 22 08:32:41 CET 2008

Convert arch/powerpc/ over to long long based u64:

 -#ifdef __powerpc64__
 -# include <asm-generic/int-l64.h>
 -#else
 -# include <asm-generic/int-ll64.h>
 -#endif
 +#include <asm-generic/int-ll64.h>

This will avoid reoccuring spurious warnings in core kernel code that 
comes when people test on their own hardware. (i.e. x86 in ~98% of the 
cases) This is what x86 uses and it generally helps keep 64-bit code 
32-bit clean too.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/powerpc/include/asm/rtas.h               |    2 -
 arch/powerpc/include/asm/types.h              |    6 ----
 arch/powerpc/kernel/dma-iommu.c               |    4 +-
 arch/powerpc/kernel/iommu.c                   |   12 ++++----
 arch/powerpc/kernel/lparcfg.c                 |   10 +++----
 arch/powerpc/kernel/prom.c                    |    4 +-
 arch/powerpc/kernel/prom_init.c               |    2 -
 arch/powerpc/kernel/setup_64.c                |    6 ++--
 arch/powerpc/mm/stab.c                        |    4 +-
 arch/powerpc/oprofile/cell/vma_map.c          |    2 -
 arch/powerpc/oprofile/op_model_pa6t.c         |    6 ++--
 arch/powerpc/platforms/cell/beat_htab.c       |   21 ++++++++-------
 arch/powerpc/platforms/cell/beat_interrupt.c  |    2 -
 arch/powerpc/platforms/cell/beat_udbg.c       |    4 +-
 arch/powerpc/platforms/cell/celleb_scc_epci.c |    4 +-
 arch/powerpc/platforms/cell/interrupt.c       |    2 -
 arch/powerpc/platforms/cell/io-workarounds.c  |    2 -
 arch/powerpc/platforms/cell/iommu.c           |    6 ++--
 arch/powerpc/platforms/cell/ras.c             |    8 ++---
 arch/powerpc/platforms/cell/spu_base.c        |    8 ++---
 arch/powerpc/platforms/cell/spu_callbacks.c   |    2 -
 arch/powerpc/platforms/iseries/iommu.c        |    4 +-
 arch/powerpc/platforms/pasemi/cpufreq.c       |    2 -
 arch/powerpc/platforms/pseries/iommu.c        |   35 ++++++++++++--------------
 arch/powerpc/sysdev/mpic.c                    |    2 -
 drivers/char/hvc_beat.c                       |    4 +-
 drivers/net/pasemi_mac.c                      |    6 ++--
 drivers/pcmcia/electra_cf.c                   |    2 -
 drivers/scsi/ibmvscsi/ibmvscsi.c              |   12 ++++----
 29 files changed, 90 insertions(+), 94 deletions(-)

Index: linux/arch/powerpc/include/asm/rtas.h
===================================================================
--- linux.orig/arch/powerpc/include/asm/rtas.h
+++ linux/arch/powerpc/include/asm/rtas.h
@@ -18,7 +18,7 @@
  */
 
 #define RTAS_UNKNOWN_SERVICE (-1)
-#define RTAS_INSTANTIATE_MAX (1UL<<30) /* Don't instantiate rtas at/above this value */
+#define RTAS_INSTANTIATE_MAX (1ULL<<30) /* Don't instantiate rtas at/above this value */
 
 /* Buffer size for ppc_rtas system call. */
 #define RTAS_RMOBUF_MAX (64 * 1024)
Index: linux/arch/powerpc/include/asm/types.h
===================================================================
--- linux.orig/arch/powerpc/include/asm/types.h
+++ linux/arch/powerpc/include/asm/types.h
@@ -1,11 +1,7 @@
 #ifndef _ASM_POWERPC_TYPES_H
 #define _ASM_POWERPC_TYPES_H
 
-#ifdef __powerpc64__
-# include <asm-generic/int-l64.h>
-#else
-# include <asm-generic/int-ll64.h>
-#endif
+#include <asm-generic/int-ll64.h>
 
 #ifndef __ASSEMBLY__
 
Index: linux/arch/powerpc/kernel/dma-iommu.c
===================================================================
--- linux.orig/arch/powerpc/kernel/dma-iommu.c
+++ linux/arch/powerpc/kernel/dma-iommu.c
@@ -79,10 +79,10 @@ static int dma_iommu_dma_supported(struc
 		       "Warning: IOMMU offset too big for device mask\n");
 		if (tbl)
 			printk(KERN_INFO
-			       "mask: 0x%08lx, table offset: 0x%08lx\n",
+			       "mask: 0x%08llx, table offset: 0x%08lx\n",
 				mask, tbl->it_offset);
 		else
-			printk(KERN_INFO "mask: 0x%08lx, table unavailable\n",
+			printk(KERN_INFO "mask: 0x%08llx, table unavailable\n",
 				mask);
 		return 0;
 	} else
Index: linux/arch/powerpc/kernel/iommu.c
===================================================================
--- linux.orig/arch/powerpc/kernel/iommu.c
+++ linux/arch/powerpc/kernel/iommu.c
@@ -239,12 +239,12 @@ static void __iommu_free(struct iommu_ta
 		if (printk_ratelimit()) {
 			printk(KERN_INFO "iommu_free: invalid entry\n");
 			printk(KERN_INFO "\tentry     = 0x%lx\n", entry); 
-			printk(KERN_INFO "\tdma_addr  = 0x%lx\n", (u64)dma_addr);
-			printk(KERN_INFO "\tTable     = 0x%lx\n", (u64)tbl);
-			printk(KERN_INFO "\tbus#      = 0x%lx\n", (u64)tbl->it_busno);
-			printk(KERN_INFO "\tsize      = 0x%lx\n", (u64)tbl->it_size);
-			printk(KERN_INFO "\tstartOff  = 0x%lx\n", (u64)tbl->it_offset);
-			printk(KERN_INFO "\tindex     = 0x%lx\n", (u64)tbl->it_index);
+			printk(KERN_INFO "\tdma_addr  = 0x%llx\n", (u64)dma_addr);
+			printk(KERN_INFO "\tTable     = 0x%llx\n", (u64)tbl);
+			printk(KERN_INFO "\tbus#      = 0x%llx\n", (u64)tbl->it_busno);
+			printk(KERN_INFO "\tsize      = 0x%llx\n", (u64)tbl->it_size);
+			printk(KERN_INFO "\tstartOff  = 0x%llx\n", (u64)tbl->it_offset);
+			printk(KERN_INFO "\tindex     = 0x%llx\n", (u64)tbl->it_index);
 			WARN_ON(1);
 		}
 		return;
Index: linux/arch/powerpc/kernel/lparcfg.c
===================================================================
--- linux.orig/arch/powerpc/kernel/lparcfg.c
+++ linux/arch/powerpc/kernel/lparcfg.c
@@ -240,7 +240,7 @@ static void parse_ppp_data(struct seq_fi
 	if (rc)
 		return;
 
-	seq_printf(m, "partition_entitled_capacity=%ld\n",
+	seq_printf(m, "partition_entitled_capacity=%lld\n",
 	           ppp_data.entitlement);
 	seq_printf(m, "group=%d\n", ppp_data.group_num);
 	seq_printf(m, "system_active_processors=%d\n",
@@ -265,7 +265,7 @@ static void parse_ppp_data(struct seq_fi
 		   ppp_data.unallocated_weight);
 	seq_printf(m, "capacity_weight=%d\n", ppp_data.weight);
 	seq_printf(m, "capped=%d\n", ppp_data.capped);
-	seq_printf(m, "unallocated_capacity=%ld\n",
+	seq_printf(m, "unallocated_capacity=%lld\n",
 		   ppp_data.unallocated_entitlement);
 }
 
@@ -509,10 +509,10 @@ static ssize_t update_ppp(u64 *entitleme
 	} else
 		return -EINVAL;
 
-	pr_debug("%s: current_entitled = %lu, current_weight = %u\n",
+	pr_debug("%s: current_entitled = %llu, current_weight = %u\n",
 		 __func__, ppp_data.entitlement, ppp_data.weight);
 
-	pr_debug("%s: new_entitled = %lu, new_weight = %u\n",
+	pr_debug("%s: new_entitled = %llu, new_weight = %u\n",
 		 __func__, new_entitled, new_weight);
 
 	retval = plpar_hcall_norets(H_SET_PPP, new_entitled, new_weight);
@@ -558,7 +558,7 @@ static ssize_t update_mpp(u64 *entitleme
 	pr_debug("%s: current_entitled = %lu, current_weight = %u\n",
 	         __func__, mpp_data.entitled_mem, mpp_data.mem_weight);
 
-	pr_debug("%s: new_entitled = %lu, new_weight = %u\n",
+	pr_debug("%s: new_entitled = %llu, new_weight = %u\n",
 		 __func__, new_entitled, new_weight);
 
 	rc = plpar_hcall_norets(H_SET_MPP, new_entitled, new_weight);
Index: linux/arch/powerpc/kernel/prom.c
===================================================================
--- linux.orig/arch/powerpc/kernel/prom.c
+++ linux/arch/powerpc/kernel/prom.c
@@ -824,11 +824,11 @@ static int __init early_init_dt_scan_cho
 #endif
 
 #ifdef CONFIG_KEXEC
-	lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
+	lprop = (unsigned long *)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
 	if (lprop)
 		crashk_res.start = *lprop;
 
-	lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-size", NULL);
+	lprop = (unsigned long *)of_get_flat_dt_prop(node, "linux,crashkernel-size", NULL);
 	if (lprop)
 		crashk_res.end = crashk_res.start + *lprop - 1;
 #endif
Index: linux/arch/powerpc/kernel/prom_init.c
===================================================================
--- linux.orig/arch/powerpc/kernel/prom_init.c
+++ linux/arch/powerpc/kernel/prom_init.c
@@ -1210,7 +1210,7 @@ static void __init prom_initialize_tce_t
 		/* Initialize the table to have a one-to-one mapping
 		 * over the allocated size.
 		 */
-		tce_entryp = (unsigned long *)base;
+		tce_entryp = (u64 *)base;
 		for (i = 0; i < (minsize >> 3) ;tce_entryp++, i++) {
 			tce_entry = (i << PAGE_SHIFT);
 			tce_entry |= 0x3;
Index: linux/arch/powerpc/kernel/setup_64.c
===================================================================
--- linux.orig/arch/powerpc/kernel/setup_64.c
+++ linux/arch/powerpc/kernel/setup_64.c
@@ -433,8 +433,8 @@ void __init setup_system(void)
 	printk("Starting Linux PPC64 %s\n", init_utsname()->version);
 
 	printk("-----------------------------------------------------\n");
-	printk("ppc64_pft_size                = 0x%lx\n", ppc64_pft_size);
-	printk("physicalMemorySize            = 0x%lx\n", lmb_phys_mem_size());
+	printk("ppc64_pft_size                = 0x%llx\n", ppc64_pft_size);
+	printk("physicalMemorySize            = 0x%llx\n", lmb_phys_mem_size());
 	if (ppc64_caches.dline_size != 0x80)
 		printk("ppc64_caches.dcache_line_size = 0x%x\n",
 		       ppc64_caches.dline_size);
@@ -492,7 +492,7 @@ static void __init emergency_stack_init(
 	 * bringup, we need to get at them in real mode. This means they
 	 * must also be within the RMO region.
 	 */
-	limit = min(0x10000000UL, lmb.rmo_size);
+	limit = min(0x10000000ULL, lmb.rmo_size);
 
 	for_each_possible_cpu(i) {
 		unsigned long sp;
Index: linux/arch/powerpc/mm/stab.c
===================================================================
--- linux.orig/arch/powerpc/mm/stab.c
+++ linux/arch/powerpc/mm/stab.c
@@ -251,8 +251,8 @@ void __init stabs_alloc(void)
 
 		paca[cpu].stab_addr = newstab;
 		paca[cpu].stab_real = virt_to_abs(newstab);
-		printk(KERN_INFO "Segment table for CPU %d at 0x%lx "
-		       "virtual, 0x%lx absolute\n",
+		printk(KERN_INFO "Segment table for CPU %d at 0x%llx "
+		       "virtual, 0x%llx absolute\n",
 		       cpu, paca[cpu].stab_addr, paca[cpu].stab_real);
 	}
 }
Index: linux/arch/powerpc/oprofile/cell/vma_map.c
===================================================================
--- linux.orig/arch/powerpc/oprofile/cell/vma_map.c
+++ linux/arch/powerpc/oprofile/cell/vma_map.c
@@ -92,7 +92,7 @@ vma_map_add(struct vma_to_fileoffset_map
  * A pointer to the first vma_map in the generated list
  * of vma_maps is returned.  */
 struct vma_to_fileoffset_map *create_vma_map(const struct spu *aSpu,
-					     unsigned long __spu_elf_start)
+					     u64 __spu_elf_start)
 {
 	static const unsigned char expected[EI_PAD] = {
 		[EI_MAG0] = ELFMAG0,
Index: linux/arch/powerpc/oprofile/op_model_pa6t.c
===================================================================
--- linux.orig/arch/powerpc/oprofile/op_model_pa6t.c
+++ linux/arch/powerpc/oprofile/op_model_pa6t.c
@@ -132,7 +132,7 @@ static int pa6t_reg_setup(struct op_coun
 	for (pmc = 0; pmc < cur_cpu_spec->num_pmcs; pmc++) {
 		/* counters are 40 bit. Move to cputable at some point? */
 		reset_value[pmc] = (0x1UL << 39) - ctr[pmc].count;
-		pr_debug("reset_value for pmc%u inited to 0x%lx\n",
+		pr_debug("reset_value for pmc%u inited to 0x%llx\n",
 				 pmc, reset_value[pmc]);
 	}
 
@@ -177,7 +177,7 @@ static int pa6t_start(struct op_counter_
 
 	oprofile_running = 1;
 
-	pr_debug("start on cpu %d, mmcr0 %lx\n", smp_processor_id(), mmcr0);
+	pr_debug("start on cpu %d, mmcr0 %llx\n", smp_processor_id(), mmcr0);
 
 	return 0;
 }
@@ -193,7 +193,7 @@ static void pa6t_stop(void)
 
 	oprofile_running = 0;
 
-	pr_debug("stop on cpu %d, mmcr0 %lx\n", smp_processor_id(), mmcr0);
+	pr_debug("stop on cpu %d, mmcr0 %llx\n", smp_processor_id(), mmcr0);
 }
 
 /* handle the perfmon overflow vector */
Index: linux/arch/powerpc/platforms/cell/beat_htab.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/beat_htab.c
+++ linux/arch/powerpc/platforms/cell/beat_htab.c
@@ -44,8 +44,8 @@ static DEFINE_SPINLOCK(beat_htab_lock);
 
 static inline unsigned int beat_read_mask(unsigned hpte_group)
 {
-	unsigned long hpte_v[5];
 	unsigned long rmask = 0;
+	u64 hpte_v[5];
 
 	beat_read_htab_entries(0, hpte_group + 0, hpte_v);
 	if (!(hpte_v[0] & HPTE_V_BOLTED))
@@ -93,8 +93,7 @@ static long beat_lpar_hpte_insert(unsign
 				  int psize, int ssize)
 {
 	unsigned long lpar_rc;
-	unsigned long slot;
-	unsigned long hpte_v, hpte_r;
+	u64 hpte_v, hpte_r, slot;
 
 	/* same as iseries */
 	if (vflags & HPTE_V_SECONDARY)
@@ -153,8 +152,9 @@ static long beat_lpar_hpte_remove(unsign
 
 static unsigned long beat_lpar_hpte_getword0(unsigned long slot)
 {
-	unsigned long dword0, dword[5];
+	unsigned long dword0;
 	unsigned long lpar_rc;
+	u64 dword[5];
 
 	lpar_rc = beat_read_htab_entries(0, slot & ~3UL, dword);
 
@@ -170,7 +170,7 @@ static void beat_lpar_hptab_clear(void)
 	unsigned long size_bytes = 1UL << ppc64_pft_size;
 	unsigned long hpte_count = size_bytes >> 4;
 	int i;
-	unsigned long dummy0, dummy1;
+	u64 dummy0, dummy1;
 
 	/* TODO: Use bulk call */
 	for (i = 0; i < hpte_count; i++)
@@ -189,7 +189,8 @@ static long beat_lpar_hpte_updatepp(unsi
 				    int psize, int ssize, int local)
 {
 	unsigned long lpar_rc;
-	unsigned long dummy0, dummy1, want_v;
+	u64 dummy0, dummy1;
+	unsigned long want_v;
 
 	want_v = hpte_encode_v(va, psize, MMU_SEGSIZE_256M);
 
@@ -255,7 +256,8 @@ static void beat_lpar_hpte_updateboltedp
 					  unsigned long ea,
 					  int psize, int ssize)
 {
-	unsigned long lpar_rc, slot, vsid, va, dummy0, dummy1;
+	unsigned long lpar_rc, slot, vsid, va;
+	u64 dummy0, dummy1;
 
 	vsid = get_kernel_vsid(ea, MMU_SEGSIZE_256M);
 	va = (vsid << 28) | (ea & 0x0fffffff);
@@ -276,7 +278,7 @@ static void beat_lpar_hpte_invalidate(un
 {
 	unsigned long want_v;
 	unsigned long lpar_rc;
-	unsigned long dummy1, dummy2;
+	u64 dummy1, dummy2;
 	unsigned long flags;
 
 	DBG_LOW("    inval : slot=%lx, va=%016lx, psize: %d, local: %d\n",
@@ -315,8 +317,7 @@ static long beat_lpar_hpte_insert_v3(uns
 				  int psize, int ssize)
 {
 	unsigned long lpar_rc;
-	unsigned long slot;
-	unsigned long hpte_v, hpte_r;
+	u64 hpte_v, hpte_r, slot;
 
 	/* same as iseries */
 	if (vflags & HPTE_V_SECONDARY)
Index: linux/arch/powerpc/platforms/cell/beat_interrupt.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/beat_interrupt.c
+++ linux/arch/powerpc/platforms/cell/beat_interrupt.c
@@ -99,7 +99,7 @@ static void beatic_end_irq(unsigned int 
 	err = beat_downcount_of_interrupt(irq_plug);
 	if (err != 0) {
 		if ((err & 0xFFFFFFFF) != 0xFFFFFFF5) /* -11: wrong state */
-			panic("Failed to downcount IRQ! Error = %16lx", err);
+			panic("Failed to downcount IRQ! Error = %16llx", err);
 
 		printk(KERN_ERR "IRQ over-downcounted, plug %d\n", irq_plug);
 	}
Index: linux/arch/powerpc/platforms/cell/beat_udbg.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/beat_udbg.c
+++ linux/arch/powerpc/platforms/cell/beat_udbg.c
@@ -40,8 +40,8 @@ static void udbg_putc_beat(char c)
 }
 
 /* Buffered chars getc */
-static long inbuflen;
-static long inbuf[2];	/* must be 2 longs */
+static u64 inbuflen;
+static u64 inbuf[2];	/* must be 2 longs */
 
 static int udbg_getc_poll_beat(void)
 {
Index: linux/arch/powerpc/platforms/cell/celleb_scc_epci.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/celleb_scc_epci.c
+++ linux/arch/powerpc/platforms/cell/celleb_scc_epci.c
@@ -405,7 +405,7 @@ static int __init celleb_setup_epci(stru
 	hose->cfg_addr = ioremap(r.start, (r.end - r.start + 1));
 	if (!hose->cfg_addr)
 		goto error;
-	pr_debug("EPCI: cfg_addr map 0x%016lx->0x%016lx + 0x%016lx\n",
+	pr_debug("EPCI: cfg_addr map 0x%016llx->0x%016lx + 0x%016llx\n",
 		 r.start, (unsigned long)hose->cfg_addr, (r.end - r.start + 1));
 
 	if (of_address_to_resource(node, 2, &r))
@@ -413,7 +413,7 @@ static int __init celleb_setup_epci(stru
 	hose->cfg_data = ioremap(r.start, (r.end - r.start + 1));
 	if (!hose->cfg_data)
 		goto error;
-	pr_debug("EPCI: cfg_data map 0x%016lx->0x%016lx + 0x%016lx\n",
+	pr_debug("EPCI: cfg_data map 0x%016llx->0x%016lx + 0x%016llx\n",
 		 r.start, (unsigned long)hose->cfg_data, (r.end - r.start + 1));
 
 	hose->ops = &celleb_epci_ops;
Index: linux/arch/powerpc/platforms/cell/interrupt.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/interrupt.c
+++ linux/arch/powerpc/platforms/cell/interrupt.c
@@ -148,7 +148,7 @@ static unsigned int iic_get_irq(void)
 
 	iic = &__get_cpu_var(iic);
 	*(unsigned long *) &pending =
-		in_be64((unsigned long __iomem *) &iic->regs->pending_destr);
+		in_be64((unsigned long long __iomem *) &iic->regs->pending_destr);
 	if (!(pending.flags & CBE_IIC_IRQ_VALID))
 		return NO_IRQ;
 	virq = irq_linear_revmap(iic_host, iic_pending_to_hwnum(pending));
Index: linux/arch/powerpc/platforms/cell/io-workarounds.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/io-workarounds.c
+++ linux/arch/powerpc/platforms/cell/io-workarounds.c
@@ -130,7 +130,7 @@ static const struct ppc_pci_io __devinit
 
 };
 
-static void __iomem *iowa_ioremap(unsigned long addr, unsigned long size,
+static void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size,
 						unsigned long flags)
 {
 	struct iowa_bus *bus;
Index: linux/arch/powerpc/platforms/cell/iommu.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/iommu.c
+++ linux/arch/powerpc/platforms/cell/iommu.c
@@ -150,7 +150,7 @@ static int cbe_nr_iommus;
 static void invalidate_tce_cache(struct cbe_iommu *iommu, unsigned long *pte,
 		long n_ptes)
 {
-	unsigned long __iomem *reg;
+	u64 __iomem *reg;
 	unsigned long val;
 	long n;
 
@@ -855,7 +855,7 @@ static int __init cell_iommu_init_disabl
 	 */
 	if (np && size < lmb_end_of_DRAM()) {
 		printk(KERN_WARNING "iommu: force-enabled, dma window"
-		       " (%ldMB) smaller than total memory (%ldMB)\n",
+		       " (%ldMB) smaller than total memory (%lldMB)\n",
 		       size >> 20, lmb_end_of_DRAM() >> 20);
 		return -ENODEV;
 	}
@@ -985,7 +985,7 @@ static void cell_dma_dev_setup_fixed(str
 	addr = cell_iommu_get_fixed_address(dev) + dma_iommu_fixed_base;
 	archdata->dma_data = (void *)addr;
 
-	dev_dbg(dev, "iommu: fixed addr = %lx\n", addr);
+	dev_dbg(dev, "iommu: fixed addr = %llx\n", addr);
 }
 
 static void insert_16M_pte(unsigned long addr, unsigned long *ptab,
Index: linux/arch/powerpc/platforms/cell/ras.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/ras.c
+++ linux/arch/powerpc/platforms/cell/ras.c
@@ -38,16 +38,16 @@ static void dump_fir(int cpu)
 	/* Todo: do some nicer parsing of bits and based on them go down
 	 * to other sub-units FIRs and not only IIC
 	 */
-	printk(KERN_ERR "Global Checkstop FIR    : 0x%016lx\n",
+	printk(KERN_ERR "Global Checkstop FIR    : 0x%016llx\n",
 	       in_be64(&pregs->checkstop_fir));
-	printk(KERN_ERR "Global Recoverable FIR  : 0x%016lx\n",
+	printk(KERN_ERR "Global Recoverable FIR  : 0x%016llx\n",
 	       in_be64(&pregs->checkstop_fir));
-	printk(KERN_ERR "Global MachineCheck FIR : 0x%016lx\n",
+	printk(KERN_ERR "Global MachineCheck FIR : 0x%016llx\n",
 	       in_be64(&pregs->spec_att_mchk_fir));
 
 	if (iregs == NULL)
 		return;
-	printk(KERN_ERR "IOC FIR                 : 0x%016lx\n",
+	printk(KERN_ERR "IOC FIR                 : 0x%016llx\n",
 	       in_be64(&iregs->ioc_fir));
 
 }
Index: linux/arch/powerpc/platforms/cell/spu_base.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/spu_base.c
+++ linux/arch/powerpc/platforms/cell/spu_base.c
@@ -139,10 +139,10 @@ static void spu_restart_dma(struct spu *
 {
 	struct spu_priv2 __iomem *priv2 = spu->priv2;
 
-	if (!test_bit(SPU_CONTEXT_SWITCH_PENDING, &spu->flags))
+	if (!test_bit(SPU_CONTEXT_SWITCH_PENDING, (unsigned long *)&spu->flags))
 		out_be64(&priv2->mfc_control_RW, MFC_CNTL_RESTART_DMA_COMMAND);
 	else {
-		set_bit(SPU_CONTEXT_FAULT_PENDING, &spu->flags);
+		set_bit(SPU_CONTEXT_FAULT_PENDING, (unsigned long *)&spu->flags);
 		mb();
 	}
 }
@@ -151,7 +151,7 @@ static inline void spu_load_slb(struct s
 {
 	struct spu_priv2 __iomem *priv2 = spu->priv2;
 
-	pr_debug("%s: adding SLB[%d] 0x%016lx 0x%016lx\n",
+	pr_debug("%s: adding SLB[%d] 0x%016llx 0x%016llx\n",
 			__func__, slbe, slb->vsid, slb->esid);
 
 	out_be64(&priv2->slb_index_W, slbe);
@@ -221,7 +221,7 @@ static int __spu_trap_data_map(struct sp
 {
 	int ret;
 
-	pr_debug("%s, %lx, %lx\n", __func__, dsisr, ea);
+	pr_debug("%s, %llx, %lx\n", __func__, dsisr, ea);
 
 	/*
 	 * Handle kernel space hash faults immediately. User hash
Index: linux/arch/powerpc/platforms/cell/spu_callbacks.c
===================================================================
--- linux.orig/arch/powerpc/platforms/cell/spu_callbacks.c
+++ linux/arch/powerpc/platforms/cell/spu_callbacks.c
@@ -54,7 +54,7 @@ long spu_sys_callback(struct spu_syscall
 	long (*syscall)(u64 a1, u64 a2, u64 a3, u64 a4, u64 a5, u64 a6);
 
 	if (s->nr_ret >= ARRAY_SIZE(spu_syscall_table)) {
-		pr_debug("%s: invalid syscall #%ld", __func__, s->nr_ret);
+		pr_debug("%s: invalid syscall #%lld", __func__, s->nr_ret);
 		return -ENOSYS;
 	}
 
Index: linux/arch/powerpc/platforms/iseries/iommu.c
===================================================================
--- linux.orig/arch/powerpc/platforms/iseries/iommu.c
+++ linux/arch/powerpc/platforms/iseries/iommu.c
@@ -66,7 +66,7 @@ static int tce_build_iSeries(struct iomm
 
 		rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, tce);
 		if (rc)
-			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%llx\n",
 					rc);
 		index++;
 		uaddr += TCE_PAGE_SIZE;
@@ -81,7 +81,7 @@ static void tce_free_iSeries(struct iomm
 	while (npages--) {
 		rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, 0);
 		if (rc)
-			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%llx\n",
 					rc);
 		index++;
 	}
Index: linux/arch/powerpc/platforms/pasemi/cpufreq.c
===================================================================
--- linux.orig/arch/powerpc/platforms/pasemi/cpufreq.c
+++ linux/arch/powerpc/platforms/pasemi/cpufreq.c
@@ -112,7 +112,7 @@ static int get_gizmo_latency(void)
 
 static void set_astate(int cpu, unsigned int astate)
 {
-	u64 flags;
+	unsigned long flags;
 
 	/* Return if called before init has run */
 	if (unlikely(!sdcasr_mapbase))
Index: linux/arch/powerpc/platforms/pseries/iommu.c
===================================================================
--- linux.orig/arch/powerpc/platforms/pseries/iommu.c
+++ linux/arch/powerpc/platforms/pseries/iommu.c
@@ -127,10 +127,10 @@ static int tce_build_pSeriesLP(struct io
 		}
 
 		if (rc && printk_ratelimit()) {
-			printk("tce_build_pSeriesLP: plpar_tce_put failed. rc=%ld\n", rc);
-			printk("\tindex   = 0x%lx\n", (u64)tbl->it_index);
-			printk("\ttcenum  = 0x%lx\n", (u64)tcenum);
-			printk("\ttce val = 0x%lx\n", tce );
+			printk("tce_build_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc);
+			printk("\tindex   = 0x%llx\n", (u64)tbl->it_index);
+			printk("\ttcenum  = 0x%llx\n", (u64)tcenum);
+			printk("\ttce val = 0x%llx\n", tce );
 			show_stack(current, (unsigned long *)__get_SP());
 		}
 
@@ -210,10 +210,10 @@ static int tce_buildmulti_pSeriesLP(stru
 	}
 
 	if (rc && printk_ratelimit()) {
-		printk("tce_buildmulti_pSeriesLP: plpar_tce_put failed. rc=%ld\n", rc);
-		printk("\tindex   = 0x%lx\n", (u64)tbl->it_index);
-		printk("\tnpages  = 0x%lx\n", (u64)npages);
-		printk("\ttce[0] val = 0x%lx\n", tcep[0]);
+		printk("tce_buildmulti_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc);
+		printk("\tindex   = 0x%llx\n", (u64)tbl->it_index);
+		printk("\tnpages  = 0x%llx\n", (u64)npages);
+		printk("\ttce[0] val = 0x%llx\n", tcep[0]);
 		show_stack(current, (unsigned long *)__get_SP());
 	}
 	return ret;
@@ -227,9 +227,9 @@ static void tce_free_pSeriesLP(struct io
 		rc = plpar_tce_put((u64)tbl->it_index, (u64)tcenum << 12, 0);
 
 		if (rc && printk_ratelimit()) {
-			printk("tce_free_pSeriesLP: plpar_tce_put failed. rc=%ld\n", rc);
-			printk("\tindex   = 0x%lx\n", (u64)tbl->it_index);
-			printk("\ttcenum  = 0x%lx\n", (u64)tcenum);
+			printk("tce_free_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc);
+			printk("\tindex   = 0x%llx\n", (u64)tbl->it_index);
+			printk("\ttcenum  = 0x%llx\n", (u64)tcenum);
 			show_stack(current, (unsigned long *)__get_SP());
 		}
 
@@ -246,9 +246,9 @@ static void tce_freemulti_pSeriesLP(stru
 
 	if (rc && printk_ratelimit()) {
 		printk("tce_freemulti_pSeriesLP: plpar_tce_stuff failed\n");
-		printk("\trc      = %ld\n", rc);
-		printk("\tindex   = 0x%lx\n", (u64)tbl->it_index);
-		printk("\tnpages  = 0x%lx\n", (u64)npages);
+		printk("\trc      = %lld\n", rc);
+		printk("\tindex   = 0x%llx\n", (u64)tbl->it_index);
+		printk("\tnpages  = 0x%llx\n", (u64)npages);
 		show_stack(current, (unsigned long *)__get_SP());
 	}
 }
@@ -261,10 +261,9 @@ static unsigned long tce_get_pSeriesLP(s
 	rc = plpar_tce_get((u64)tbl->it_index, (u64)tcenum << 12, &tce_ret);
 
 	if (rc && printk_ratelimit()) {
-		printk("tce_get_pSeriesLP: plpar_tce_get failed. rc=%ld\n",
-			rc);
-		printk("\tindex   = 0x%lx\n", (u64)tbl->it_index);
-		printk("\ttcenum  = 0x%lx\n", (u64)tcenum);
+		printk("tce_get_pSeriesLP: plpar_tce_get failed. rc=%lld\n", rc);
+		printk("\tindex   = 0x%llx\n", (u64)tbl->it_index);
+		printk("\ttcenum  = 0x%llx\n", (u64)tcenum);
 		show_stack(current, (unsigned long *)__get_SP());
 	}
 
Index: linux/arch/powerpc/sysdev/mpic.c
===================================================================
--- linux.orig/arch/powerpc/sysdev/mpic.c
+++ linux/arch/powerpc/sysdev/mpic.c
@@ -435,7 +435,7 @@ static void __init mpic_scan_ht_msi(stru
 		addr = addr | ((u64)readl(base + HT_MSI_ADDR_HI) << 32);
 	}
 
-	printk(KERN_DEBUG "mpic:   - HT:%02x.%x %s MSI mapping found @ 0x%lx\n",
+	printk(KERN_DEBUG "mpic:   - HT:%02x.%x %s MSI mapping found @ 0x%llx\n",
 		PCI_SLOT(devfn), PCI_FUNC(devfn),
 		flags & HT_MSI_FLAGS_ENABLE ? "enabled" : "disabled", addr);
 
Index: linux/drivers/char/hvc_beat.c
===================================================================
--- linux.orig/drivers/char/hvc_beat.c
+++ linux/drivers/char/hvc_beat.c
@@ -44,7 +44,7 @@ static int hvc_beat_get_chars(uint32_t v
 	static unsigned char q[sizeof(unsigned long) * 2]
 		__attribute__((aligned(sizeof(unsigned long))));
 	static int qlen = 0;
-	unsigned long got;
+	u64 got;
 
 again:
 	if (qlen) {
@@ -63,7 +63,7 @@ again:
 		}
 	}
 	if (beat_get_term_char(vtermno, &got,
-		((unsigned long *)q), ((unsigned long *)q) + 1) == 0) {
+		((u64 *)q), ((u64 *)q) + 1) == 0) {
 		qlen = got;
 		goto again;
 	}
Index: linux/drivers/net/pasemi_mac.c
===================================================================
--- linux.orig/drivers/net/pasemi_mac.c
+++ linux/drivers/net/pasemi_mac.c
@@ -712,7 +712,7 @@ static inline void pasemi_mac_rx_error(c
 	rcmdsta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
 	ccmdsta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(chan->chno));
 
-	printk(KERN_ERR "pasemi_mac: rx error. macrx %016lx, rx status %lx\n",
+	printk(KERN_ERR "pasemi_mac: rx error. macrx %016llx, rx status %llx\n",
 		macrx, *chan->status);
 
 	printk(KERN_ERR "pasemi_mac: rcmdsta %08x ccmdsta %08x\n",
@@ -730,8 +730,8 @@ static inline void pasemi_mac_tx_error(c
 
 	cmdsta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(chan->chno));
 
-	printk(KERN_ERR "pasemi_mac: tx error. mactx 0x%016lx, "\
-		"tx status 0x%016lx\n", mactx, *chan->status);
+	printk(KERN_ERR "pasemi_mac: tx error. mactx 0x%016llx, "\
+		"tx status 0x%016llx\n", mactx, *chan->status);
 
 	printk(KERN_ERR "pasemi_mac: tcmdsta 0x%08x\n", cmdsta);
 }
Index: linux/drivers/pcmcia/electra_cf.c
===================================================================
--- linux.orig/drivers/pcmcia/electra_cf.c
+++ linux/drivers/pcmcia/electra_cf.c
@@ -297,7 +297,7 @@ static int __devinit electra_cf_probe(st
 		goto fail3;
 	}
 
-	dev_info(device, "at mem 0x%lx io 0x%lx irq %d\n",
+	dev_info(device, "at mem 0x%lx io 0x%llx irq %d\n",
 		 cf->mem_phys, io.start, cf->irq);
 
 	cf->active = 1;
Index: linux/drivers/scsi/ibmvscsi/ibmvscsi.c
===================================================================
--- linux.orig/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ linux/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -1060,7 +1060,7 @@ static int ibmvscsi_eh_abort_handler(str
 	}
 
 	sdev_printk(KERN_INFO, cmd->device,
-                    "aborting command. lun 0x%lx, tag 0x%lx\n",
+                    "aborting command. lun 0x%llx, tag 0x%llx\n",
 		    (((u64) lun) << 48), (u64) found_evt);
 
 	wait_for_completion(&evt->comp);
@@ -1081,7 +1081,7 @@ static int ibmvscsi_eh_abort_handler(str
 	if (rsp_rc) {
 		if (printk_ratelimit())
 			sdev_printk(KERN_WARNING, cmd->device,
-				    "abort code %d for task tag 0x%lx\n",
+				    "abort code %d for task tag 0x%llx\n",
 				    rsp_rc, tsk_mgmt->task_tag);
 		return FAILED;
 	}
@@ -1101,12 +1101,12 @@ static int ibmvscsi_eh_abort_handler(str
 
 	if (found_evt == NULL) {
 		spin_unlock_irqrestore(hostdata->host->host_lock, flags);
-		sdev_printk(KERN_INFO, cmd->device, "aborted task tag 0x%lx completed\n",
+		sdev_printk(KERN_INFO, cmd->device, "aborted task tag 0x%llx completed\n",
 			    tsk_mgmt->task_tag);
 		return SUCCESS;
 	}
 
-	sdev_printk(KERN_INFO, cmd->device, "successfully aborted task tag 0x%lx\n",
+	sdev_printk(KERN_INFO, cmd->device, "successfully aborted task tag 0x%llx\n",
 		    tsk_mgmt->task_tag);
 
 	cmd->result = (DID_ABORT << 16);
@@ -1181,7 +1181,7 @@ static int ibmvscsi_eh_device_reset_hand
 		return FAILED;
 	}
 
-	sdev_printk(KERN_INFO, cmd->device, "resetting device. lun 0x%lx\n",
+	sdev_printk(KERN_INFO, cmd->device, "resetting device. lun 0x%llx\n",
 		    (((u64) lun) << 48));
 
 	wait_for_completion(&evt->comp);
@@ -1202,7 +1202,7 @@ static int ibmvscsi_eh_device_reset_hand
 	if (rsp_rc) {
 		if (printk_ratelimit())
 			sdev_printk(KERN_WARNING, cmd->device,
-				    "reset code %d for task tag 0x%lx\n",
+				    "reset code %d for task tag 0x%llx\n",
 				    rsp_rc, tsk_mgmt->task_tag);
 		return FAILED;
 	}

Re: linux-next: sched tree build warning

[Paul Mackerras]

Ingo Molnar writes:

> the real solution is something like the patch below. That generates new 
> (but harmless) warnings within the powerpc code but those are a one-off 
> effort to fix and are not reoccuring.
> 
> Cc:-ed Paul Mackerras - Paul, am i missing anything?

That does change the formal types of things exported to userland, and
hence technically breaks the ABI, which is why I am cautious about
this idea.  Whether or not that causes real problems in practice I'm
not sure, but I would want to at least check with the glibc developers
first.

One solution to might be to use an #ifdef __KERNEL__ so that userland
still sees the long types but kernel code sees long longs.

Paul.

Re: linux-next: sched tree build warning

[Ingo Molnar]

* Paul Mackerras <paulus@samba.org> wrote:

> Ingo Molnar writes:
> 
> > the real solution is something like the patch below. That generates new 
> > (but harmless) warnings within the powerpc code but those are a one-off 
> > effort to fix and are not reoccuring.
> > 
> > Cc:-ed Paul Mackerras - Paul, am i missing anything?
> 
> That does change the formal types of things exported to userland, and 
> hence technically breaks the ABI, which is why I am cautious about this 
> idea.  Whether or not that causes real problems in practice I'm not 
> sure, but I would want to at least check with the glibc developers 
> first.
> 
> One solution to might be to use an #ifdef __KERNEL__ so that userland 
> still sees the long types but kernel code sees long longs.

which APIs do you mean exactly, could you give me an example please and 
the type of breakage you suspect?

I cannot see how the binary representation could ever change from this. 
(and that is all that an ABI is about - it is an application Binary 
interface. I.e. there's no ABI breakage.)

	Ingo

Re: linux-next: sched tree build warning

[Paul Mackerras]

Ingo Molnar writes:

> which APIs do you mean exactly, could you give me an example please and 
> the type of breakage you suspect?

Any struct with a __u64 or __s64 in it that gets exported to userland
will have a different type signature with the change, hence has the
potential to cause compile warnings or errors on correct code
(e.g. warnings on printf's that use %ld to print an __s64 field on
ppc64).  It's possible that C++ stuff will fail to link because of
mangled names coming out differently.  And so on.

> I cannot see how the binary representation could ever change from this. 
> (and that is all that an ABI is about - it is an application Binary 
> interface. I.e. there's no ABI breakage.)

Yes, the bits are the same, but that doesn't mean the types are the
same.  And we do export type definitions.

I once wanted to change the ppc32 size_t definition from unsigned int
to unsigned long to match up with ppc64.  That caused more pain than
it was worth because of exactly this issue (and also because gcc has
fixed ideas about size_t) so I abandoned it.  That's why I'm cautious
about changing user-visible types.  I'm not saying we can't do it, I'm
saying we shouldn't do it unilaterally.

Paul.

Re: linux-next: sched tree build warning

[Ingo Molnar]

* Paul Mackerras <paulus@samba.org> wrote:

> > I cannot see how the binary representation could ever change from 
> > this. (and that is all that an ABI is about - it is an application 
> > Binary interface. I.e. there's no ABI breakage.)
> 
> Yes, the bits are the same, but that doesn't mean the types are the 
> same.  And we do export type definitions.
> 
> I once wanted to change the ppc32 size_t definition from unsigned int to 
> unsigned long to match up with ppc64.  That caused more pain than it was 
> worth because of exactly this issue (and also because gcc has fixed 
> ideas about size_t) so I abandoned it.  That's why I'm cautious about 
> changing user-visible types.  I'm not saying we can't do it, I'm saying 
> we shouldn't do it unilaterally.

okay, so what's the timeline to double check those details and to get this 
fix upstream?

	Ingo

Re: linux-next: sched tree build warning

[Paul Mackerras]

Ingo Molnar writes:

> okay, so what's the timeline to double check those details and to get this 
> fix upstream?

Dunno - I have sent a query to our glibc guys, but it is vacation
season, which may delay things...

Paul.

Re: [patch] powerpc: change u64/s64 to a long long integer type

[Andrew Morton]

On Mon, 22 Dec 2008 09:03:41 +0100
Ingo Molnar <mingo@elte.hu> wrote:

> Subject: powerpc: change u64/s64 to a long long integer type

<applause>

There are lots of other architctures that need doing though.

Re: [patch] powerpc: change u64/s64 to a long long integer type

[Sam Ravnborg]

On Mon, Dec 22, 2008 at 02:43:19PM -0800, Andrew Morton wrote:
> On Mon, 22 Dec 2008 09:03:41 +0100
> Ingo Molnar <mingo@elte.hu> wrote:
> 
> > Subject: powerpc: change u64/s64 to a long long integer type
> 
> <applause>
> 
> There are lots of other architctures that need doing though.

I have missed the introduction.
Can you explain why?

I have done a bit of sparc hacking lately and was wondering if
sparc needs something similar.

cd arch/sparc
git grep u64 | grep -v __u64 | wc -l
448

[On the unified tree]

	Sam

Re: [patch] powerpc: change u64/s64 to a long long integer type

[H. Peter Anvin]

Sam Ravnborg wrote:
> On Mon, Dec 22, 2008 at 02:43:19PM -0800, Andrew Morton wrote:
>> On Mon, 22 Dec 2008 09:03:41 +0100
>> Ingo Molnar <mingo@elte.hu> wrote:
>>
>>> Subject: powerpc: change u64/s64 to a long long integer type
>> <applause>
>>
>> There are lots of other architctures that need doing though.
> 
> I have missed the introduction.
> Can you explain why?
> 
> I have done a bit of sparc hacking lately and was wondering if
> sparc needs something similar.
> 
> cd arch/sparc
> git grep u64 | grep -v __u64 | wc -l
> 448
> 

This should only affect 64-bit architectures.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

Re: [patch] powerpc: change u64/s64 to a long long integer type

[Andrew Morton]

On Tue, 23 Dec 2008 00:00:35 +0100
Sam Ravnborg <sam@ravnborg.org> wrote:

> On Mon, Dec 22, 2008 at 02:43:19PM -0800, Andrew Morton wrote:
> > On Mon, 22 Dec 2008 09:03:41 +0100
> > Ingo Molnar <mingo@elte.hu> wrote:
> > 
> > > Subject: powerpc: change u64/s64 to a long long integer type
> > 
> > <applause>
> > 
> > There are lots of other architctures that need doing though.
> 
> I have missed the introduction.
> Can you explain why?

People keep on doing

	printk("%llu", some_u64);

testing it only on x86_64 and this generates a warning storm on
powerpc, sparc64, etc.  Because they use `long', not `long long'.

And not just a little bit - this bug gets repeated maybe ten times per
week - it's insane.

If we make all architectures use `long long' then the above code
becomes correct and warning-free on all architectures.

And we then get to remove all the open-coded (unsigned long long) casts
which we added all over the tree (hundreds of them).

> I have done a bit of sparc hacking lately and was wondering if
> sparc needs something similar.
> 
> cd arch/sparc
> git grep u64 | grep -v __u64 | wc -l
> 448
> 
> [On the unified tree]

Yes, quite a few 64-bit architectures are using `long' for their
s64/u64 types.  We should convert them all to `long long'.

That's quite trivial to do, but it causes a lot of warnings due to code
in arch-speciic files which does

	printk("%lu", some_u64);

which will then generate a warning.  Or an error if the archtiecture
uses -Werror, which several do.  So we need to simultaneously convert
all those to %llu.  (Or %Lu, which saves a byte :))


	

Re: [patch] powerpc: change u64/s64 to a long long integer type

[Sam Ravnborg]

On Mon, Dec 22, 2008 at 03:03:37PM -0800, H. Peter Anvin wrote:
> Sam Ravnborg wrote:
> > On Mon, Dec 22, 2008 at 02:43:19PM -0800, Andrew Morton wrote:
> >> On Mon, 22 Dec 2008 09:03:41 +0100
> >> Ingo Molnar <mingo@elte.hu> wrote:
> >>
> >>> Subject: powerpc: change u64/s64 to a long long integer type
> >> <applause>
> >>
> >> There are lots of other architctures that need doing though.
> > 
> > I have missed the introduction.
> > Can you explain why?
> > 
> > I have done a bit of sparc hacking lately and was wondering if
> > sparc needs something similar.
> > 
> > cd arch/sparc
> > git grep u64 | grep -v __u64 | wc -l
> > 448
> > 
> 
> This should only affect 64-bit architectures.

In the sparc-next tree:

ls arch/sparc64
ls: arch/sparc64: No such file or directory

We have unified sparc and sparc64 so they are in the same arch directory now.
This will hit mainline in the upcoming merge window.

This has happended over at the sparclinux mailing list as this was
sparc/sparc64 specific stuff so no wonder you have not heard about it.

	Sam

[PATCH] sparc64: use unsigned long long for u64

[Sam Ravnborg]

Andrew Morton wrote:

    People keep on doing

            printk("%llu", some_u64);

    testing it only on x86_64 and this generates a warning storm on
    powerpc, sparc64, etc.  Because they use `long', not `long long'.

    Quite a few 64-bit architectures are using `long' for their
    s64/u64 types.  We should convert them all to `long long'.

Update types.h so we use unsigned long long for u64 and
fix all warnings in sparc64 code.
Tested with an allnoconfig, defconfig and allmodconfig builds.

This patch introduces additional warnings in several drivers.
These will be dealt with in separate patches.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
---

It may take a few days before the drivers gets fixed.
Christmas is approaching fast by now.

	Sam

 arch/sparc/include/asm/timer_64.h |    2 +-
 arch/sparc/include/asm/types.h    |    2 +-
 arch/sparc/kernel/ds.c            |   34 +++++++++++++++++-----------------
 arch/sparc/kernel/iommu.c         |    2 +-
 arch/sparc/kernel/mdesc.c         |   14 +++++++-------
 arch/sparc/kernel/of_device_64.c  |    2 +-
 arch/sparc/kernel/pci.c           |    2 +-
 arch/sparc/kernel/pci_common.c    |    2 +-
 arch/sparc/kernel/pci_msi.c       |    4 ++--
 arch/sparc/kernel/pci_schizo.c    |    2 +-
 arch/sparc/kernel/pci_sun4v.c     |    2 +-
 arch/sparc/kernel/power.c         |    2 +-
 arch/sparc/kernel/prom_irqtrans.c |    2 +-
 arch/sparc/kernel/psycho_common.c |    2 +-
 arch/sparc/kernel/smp_64.c        |    4 ++--
 arch/sparc/kernel/time_64.c       |   12 ++++++------
 arch/sparc/kernel/traps_64.c      |   20 ++++++++++----------
 arch/sparc/kernel/vio.c           |    4 ++--
 arch/sparc/mm/init_64.c           |   16 ++++++++--------
 19 files changed, 65 insertions(+), 65 deletions(-)

diff --git a/arch/sparc/include/asm/timer_64.h b/arch/sparc/include/asm/timer_64.h
index 5b779fd..ef3c368 100644
--- a/arch/sparc/include/asm/timer_64.h
+++ b/arch/sparc/include/asm/timer_64.h
@@ -10,7 +10,7 @@
 #include <linux/init.h>
 
 struct sparc64_tick_ops {
-	unsigned long (*get_tick)(void);
+	unsigned long long (*get_tick)(void);
 	int (*add_compare)(unsigned long);
 	unsigned long softint_mask;
 	void (*disable_irq)(void);
diff --git a/arch/sparc/include/asm/types.h b/arch/sparc/include/asm/types.h
index 8c28fde..2237118 100644
--- a/arch/sparc/include/asm/types.h
+++ b/arch/sparc/include/asm/types.h
@@ -11,7 +11,7 @@
 #if defined(__sparc__) && defined(__arch64__)
 
 /*** SPARC 64 bit ***/
-#include <asm-generic/int-l64.h>
+#include <asm-generic/int-ll64.h>
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
index f52e053..57c3984 100644
--- a/arch/sparc/kernel/ds.c
+++ b/arch/sparc/kernel/ds.c
@@ -286,7 +286,7 @@ static void md_update_data(struct ds_info *dp,
 
 	rp = (struct ds_md_update_req *) (dpkt + 1);
 
-	printk(KERN_INFO "ds-%lu: Machine description update.\n", dp->id);
+	printk(KERN_INFO "ds-%llu: Machine description update.\n", dp->id);
 
 	mdesc_update();
 
@@ -325,7 +325,7 @@ static void domain_shutdown_data(struct ds_info *dp,
 
 	rp = (struct ds_shutdown_req *) (dpkt + 1);
 
-	printk(KERN_ALERT "ds-%lu: Shutdown request from "
+	printk(KERN_ALERT "ds-%llu: Shutdown request from "
 	       "LDOM manager received.\n", dp->id);
 
 	memset(&pkt, 0, sizeof(pkt));
@@ -365,7 +365,7 @@ static void domain_panic_data(struct ds_info *dp,
 
 	rp = (struct ds_panic_req *) (dpkt + 1);
 
-	printk(KERN_ALERT "ds-%lu: Panic request from "
+	printk(KERN_ALERT "ds-%llu: Panic request from "
 	       "LDOM manager received.\n", dp->id);
 
 	memset(&pkt, 0, sizeof(pkt));
@@ -549,7 +549,7 @@ static int __cpuinit dr_cpu_configure(struct ds_info *dp,
 	for_each_cpu_mask(cpu, *mask) {
 		int err;
 
-		printk(KERN_INFO "ds-%lu: Starting cpu %d...\n",
+		printk(KERN_INFO "ds-%llu: Starting cpu %d...\n",
 		       dp->id, cpu);
 		err = cpu_up(cpu);
 		if (err) {
@@ -565,7 +565,7 @@ static int __cpuinit dr_cpu_configure(struct ds_info *dp,
 				res = DR_CPU_RES_CPU_NOT_RESPONDING;
 			}
 
-			printk(KERN_INFO "ds-%lu: CPU startup failed err=%d\n",
+			printk(KERN_INFO "ds-%llu: CPU startup failed err=%d\n",
 			       dp->id, err);
 			dr_cpu_mark(resp, cpu, ncpus, res, stat);
 		}
@@ -605,7 +605,7 @@ static int dr_cpu_unconfigure(struct ds_info *dp,
 	for_each_cpu_mask(cpu, *mask) {
 		int err;
 
-		printk(KERN_INFO "ds-%lu: Shutting down cpu %d...\n",
+		printk(KERN_INFO "ds-%llu: Shutting down cpu %d...\n",
 		       dp->id, cpu);
 		err = cpu_down(cpu);
 		if (err)
@@ -684,7 +684,7 @@ static void ds_pri_data(struct ds_info *dp,
 
 	rp = (struct ds_pri_msg *) (dpkt + 1);
 
-	printk(KERN_INFO "ds-%lu: PRI REQ [%lx:%lx], len=%d\n",
+	printk(KERN_INFO "ds-%llu: PRI REQ [%llx:%llx], len=%d\n",
 	       dp->id, rp->req_num, rp->type, len);
 }
 
@@ -816,7 +816,7 @@ void ldom_set_var(const char *var, const char *value)
 
 		if (ds_var_doorbell == 0 ||
 		    ds_var_response != DS_VAR_SUCCESS)
-			printk(KERN_ERR "ds-%lu: var-config [%s:%s] "
+			printk(KERN_ERR "ds-%llu: var-config [%s:%s] "
 			       "failed, response(%d).\n",
 			       dp->id, var, value,
 			       ds_var_response);
@@ -850,7 +850,7 @@ void ldom_power_off(void)
 
 static void ds_conn_reset(struct ds_info *dp)
 {
-	printk(KERN_ERR "ds-%lu: ds_conn_reset() from %p\n",
+	printk(KERN_ERR "ds-%llu: ds_conn_reset() from %p\n",
 	       dp->id, __builtin_return_address(0));
 }
 
@@ -912,11 +912,11 @@ static int ds_handshake(struct ds_info *dp, struct ds_msg_tag *pkt)
 		struct ds_cap_state *cp = find_cap(dp, ap->handle);
 
 		if (!cp) {
-			printk(KERN_ERR "ds-%lu: REG ACK for unknown "
-			       "handle %lx\n", dp->id, ap->handle);
+			printk(KERN_ERR "ds-%llu: REG ACK for unknown "
+			       "handle %llx\n", dp->id, ap->handle);
 			return 0;
 		}
-		printk(KERN_INFO "ds-%lu: Registered %s service.\n",
+		printk(KERN_INFO "ds-%llu: Registered %s service.\n",
 		       dp->id, cp->service_id);
 		cp->state = CAP_STATE_REGISTERED;
 	} else if (pkt->type == DS_REG_NACK) {
@@ -924,8 +924,8 @@ static int ds_handshake(struct ds_info *dp, struct ds_msg_tag *pkt)
 		struct ds_cap_state *cp = find_cap(dp, np->handle);
 
 		if (!cp) {
-			printk(KERN_ERR "ds-%lu: REG NACK for "
-			       "unknown handle %lx\n",
+			printk(KERN_ERR "ds-%llu: REG NACK for "
+			       "unknown handle %llx\n",
 			       dp->id, np->handle);
 			return 0;
 		}
@@ -982,8 +982,8 @@ static void process_ds_work(void)
 		int req_len = qp->req_len;
 
 		if (!cp) {
-			printk(KERN_ERR "ds-%lu: Data for unknown "
-			       "handle %lu\n",
+			printk(KERN_ERR "ds-%llu: Data for unknown "
+			       "handle %llu\n",
 			       dp->id, dpkt->handle);
 
 			spin_lock_irqsave(&ds_lock, flags);
@@ -1085,7 +1085,7 @@ static void ds_event(void *arg, int event)
 	}
 
 	if (event != LDC_EVENT_DATA_READY) {
-		printk(KERN_WARNING "ds-%lu: Unexpected LDC event %d\n",
+		printk(KERN_WARNING "ds-%llu: Unexpected LDC event %d\n",
 		       dp->id, event);
 		spin_unlock_irqrestore(&ds_lock, flags);
 		return;
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
index 1cc1995..d8900e1 100644
--- a/arch/sparc/kernel/iommu.c
+++ b/arch/sparc/kernel/iommu.c
@@ -434,7 +434,7 @@ static void strbuf_flush(struct strbuf *strbuf, struct iommu *iommu,
 		val = iommu_read(matchreg);
 		if (unlikely(val)) {
 			printk(KERN_WARNING "strbuf_flush: ctx flush "
-			       "timeout matchreg[%lx] ctx[%lx]\n",
+			       "timeout matchreg[%llx] ctx[%lx]\n",
 			       val, ctx);
 			goto do_page_flush;
 		}
diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
index 3c539a6..3f79f0c 100644
--- a/arch/sparc/kernel/mdesc.c
+++ b/arch/sparc/kernel/mdesc.c
@@ -536,24 +536,24 @@ static void __init report_platform_properties(void)
 
 	v = mdesc_get_property(hp, pn, "hostid", NULL);
 	if (v)
-		printk("PLATFORM: hostid [%08lx]\n", *v);
+		printk("PLATFORM: hostid [%08llx]\n", *v);
 	v = mdesc_get_property(hp, pn, "serial#", NULL);
 	if (v)
-		printk("PLATFORM: serial# [%08lx]\n", *v);
+		printk("PLATFORM: serial# [%08llx]\n", *v);
 	v = mdesc_get_property(hp, pn, "stick-frequency", NULL);
-	printk("PLATFORM: stick-frequency [%08lx]\n", *v);
+	printk("PLATFORM: stick-frequency [%08llx]\n", *v);
 	v = mdesc_get_property(hp, pn, "mac-address", NULL);
 	if (v)
-		printk("PLATFORM: mac-address [%lx]\n", *v);
+		printk("PLATFORM: mac-address [%llx]\n", *v);
 	v = mdesc_get_property(hp, pn, "watchdog-resolution", NULL);
 	if (v)
-		printk("PLATFORM: watchdog-resolution [%lu ms]\n", *v);
+		printk("PLATFORM: watchdog-resolution [%llu ms]\n", *v);
 	v = mdesc_get_property(hp, pn, "watchdog-max-timeout", NULL);
 	if (v)
-		printk("PLATFORM: watchdog-max-timeout [%lu ms]\n", *v);
+		printk("PLATFORM: watchdog-max-timeout [%llu ms]\n", *v);
 	v = mdesc_get_property(hp, pn, "max-cpus", NULL);
 	if (v)
-		printk("PLATFORM: max-cpus [%lu]\n", *v);
+		printk("PLATFORM: max-cpus [%llu]\n", *v);
 
 #ifdef CONFIG_SMP
 	{
diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c
index 0f616ae..d8b8ad9 100644
--- a/arch/sparc/kernel/of_device_64.c
+++ b/arch/sparc/kernel/of_device_64.c
@@ -554,7 +554,7 @@ static void __init build_device_resources(struct of_device *op,
 		memset(r, 0, sizeof(*r));
 
 		if (of_resource_verbose)
-			printk("%s reg[%d] -> %lx\n",
+			printk("%s reg[%d] -> %llx\n",
 			       op->node->full_name, index,
 			       result);
 
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index bdb7c0a..923e9bb 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -223,7 +223,7 @@ static void pci_parse_of_addrs(struct of_device *op,
 			continue;
 		i = addrs[0] & 0xff;
 		if (ofpci_verbose)
-			printk("  start: %lx, end: %lx, i: %x\n",
+			printk("  start: %llx, end: %llx, i: %x\n",
 			       op_res->start, op_res->end, i);
 
 		if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c
index 23b8808..64e6edf 100644
--- a/arch/sparc/kernel/pci_common.c
+++ b/arch/sparc/kernel/pci_common.c
@@ -457,7 +457,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
 		prom_halt();
 	}
 
-	printk("%s: PCI IO[%lx] MEM[%lx]\n",
+	printk("%s: PCI IO[%llx] MEM[%llx]\n",
 	       pbm->name,
 	       pbm->io_space.start,
 	       pbm->mem_space.start);
diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c
index 2e680f3..a4d38cf 100644
--- a/arch/sparc/kernel/pci_msi.c
+++ b/arch/sparc/kernel/pci_msi.c
@@ -426,8 +426,8 @@ void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
 		       pbm->name,
 		       pbm->msi_first, pbm->msi_num, pbm->msi_data_mask,
 		       pbm->msix_data_width);
-		printk(KERN_INFO "%s: MSI addr32[0x%lx:0x%x] "
-		       "addr64[0x%lx:0x%x]\n",
+		printk(KERN_INFO "%s: MSI addr32[0x%llx:0x%x] "
+		       "addr64[0x%llx:0x%x]\n",
 		       pbm->name,
 		       pbm->msi32_start, pbm->msi32_len,
 		       pbm->msi64_start, pbm->msi64_len);
diff --git a/arch/sparc/kernel/pci_schizo.c b/arch/sparc/kernel/pci_schizo.c
index 45d9dba..2b5cdde 100644
--- a/arch/sparc/kernel/pci_schizo.c
+++ b/arch/sparc/kernel/pci_schizo.c
@@ -794,7 +794,7 @@ static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
 		   pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
 
 	if (!(errlog & BUS_ERROR_UNMAP)) {
-		printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n",
+		printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016llx]\n",
 		       pbm->name, errlog);
 
 		return IRQ_HANDLED;
diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c
index 34a1fde..0ef0ab3 100644
--- a/arch/sparc/kernel/pci_sun4v.c
+++ b/arch/sparc/kernel/pci_sun4v.c
@@ -73,7 +73,7 @@ static long iommu_batch_flush(struct iommu_batch *p)
 		if (unlikely(num < 0)) {
 			if (printk_ratelimit())
 				printk("iommu_batch_flush: IOMMU map of "
-				       "[%08lx:%08lx:%lx:%lx:%lx] failed with "
+				       "[%08lx:%08llx:%lx:%lx:%lx] failed with "
 				       "status %ld\n",
 				       devhandle, HV_PCI_TSBID(0, entry),
 				       npages, prot, __pa(pglist), num);
diff --git a/arch/sparc/kernel/power.c b/arch/sparc/kernel/power.c
index 076cad7..ae88f06 100644
--- a/arch/sparc/kernel/power.c
+++ b/arch/sparc/kernel/power.c
@@ -40,7 +40,7 @@ static int __devinit power_probe(struct of_device *op, const struct of_device_id
 
 	power_reg = of_ioremap(res, 0, 0x4, "power");
 
-	printk(KERN_INFO "%s: Control reg at %lx\n",
+	printk(KERN_INFO "%s: Control reg at %llx\n",
 	       op->node->name, res->start);
 
 	if (has_button_interrupt(irq, op->node)) {
diff --git a/arch/sparc/kernel/prom_irqtrans.c b/arch/sparc/kernel/prom_irqtrans.c
index 96958c4..5702ad4 100644
--- a/arch/sparc/kernel/prom_irqtrans.c
+++ b/arch/sparc/kernel/prom_irqtrans.c
@@ -346,7 +346,7 @@ static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
 			break;
 	}
 	if (limit <= 0) {
-		printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
+		printk("tomatillo_wsync_handler: DMA won't sync [%llx:%llx]\n",
 		       val, mask);
 	}
 
diff --git a/arch/sparc/kernel/psycho_common.c b/arch/sparc/kernel/psycho_common.c
index 7909964..f6193bc 100644
--- a/arch/sparc/kernel/psycho_common.c
+++ b/arch/sparc/kernel/psycho_common.c
@@ -331,7 +331,7 @@ irqreturn_t psycho_pcierr_intr(int irq, void *dev_id)
 	       (afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL,
 	       (afsr & PSYCHO_PCIAFSR_MID) >> 25UL,
 	       (afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0);
-	printk(KERN_ERR "%s: PCI AFAR [%016lx]\n", pbm->name, afar);
+	printk(KERN_ERR "%s: PCI AFAR [%016llx]\n", pbm->name, afar);
 	printk(KERN_ERR "%s: PCI Secondary errors [", pbm->name);
 	reported = 0;
 	if (afsr & PSYCHO_PCIAFSR_SMA) {
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index bfe99d8..6aa3aa1 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -453,7 +453,7 @@ again:
 	__asm__ __volatile__("wrpr %0, 0x0, %%pstate"
 			     : : "r" (pstate));
 	if (stuck == 0) {
-		printk("CPU[%d]: mondo stuckage result[%016lx]\n",
+		printk("CPU[%d]: mondo stuckage result[%016llx]\n",
 		       smp_processor_id(), result);
 	} else {
 		udelay(2);
@@ -588,7 +588,7 @@ retry:
 			/* Busy bits will not clear, continue instead
 			 * of freezing up on this cpu.
 			 */
-			printk("CPU[%d]: mondo stuckage result[%016lx]\n",
+			printk("CPU[%d]: mondo stuckage result[%016llx]\n",
 			       smp_processor_id(), dispatch_stat);
 		} else {
 			int i, this_busy_nack = 0;
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
index 141da37..22a1f63 100644
--- a/arch/sparc/kernel/time_64.c
+++ b/arch/sparc/kernel/time_64.c
@@ -106,7 +106,7 @@ static void tick_init_tick(void)
 	tick_disable_irq();
 }
 
-static unsigned long tick_get_tick(void)
+static unsigned long long tick_get_tick(void)
 {
 	unsigned long ret;
 
@@ -208,7 +208,7 @@ static void stick_init_tick(void)
 	stick_disable_irq();
 }
 
-static unsigned long stick_get_tick(void)
+static unsigned long long stick_get_tick(void)
 {
 	unsigned long ret;
 
@@ -352,7 +352,7 @@ static void hbtick_init_tick(void)
 	hbtick_disable_irq();
 }
 
-static unsigned long hbtick_get_tick(void)
+static unsigned long long hbtick_get_tick(void)
 {
 	return __hbird_read_stick() & ~TICK_PRIV_BIT;
 }
@@ -422,7 +422,7 @@ static int __devinit rtc_probe(struct of_device *op, const struct of_device_id *
 {
 	struct resource *r;
 
-	printk(KERN_INFO "%s: RTC regs at 0x%lx\n",
+	printk(KERN_INFO "%s: RTC regs at 0x%llx\n",
 	       op->node->full_name, op->resource[0].start);
 
 	/* The CMOS RTC driver only accepts IORESOURCE_IO, so cons
@@ -478,7 +478,7 @@ static struct platform_device rtc_bq4802_device = {
 static int __devinit bq4802_probe(struct of_device *op, const struct of_device_id *match)
 {
 
-	printk(KERN_INFO "%s: BQ4802 regs at 0x%lx\n",
+	printk(KERN_INFO "%s: BQ4802 regs at 0x%llx\n",
 	       op->node->full_name, op->resource[0].start);
 
 	rtc_bq4802_device.resource = &op->resource[0];
@@ -542,7 +542,7 @@ static int __devinit mostek_probe(struct of_device *op, const struct of_device_i
 	    strcmp(dp->parent->parent->name, "central") != 0)
 		return -ENODEV;
 
-	printk(KERN_INFO "%s: Mostek regs at 0x%lx\n",
+	printk(KERN_INFO "%s: Mostek regs at 0x%llx\n",
 	       dp->full_name, op->resource[0].start);
 
 	m48t59_rtc.resource = &op->resource[0];
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index 4638af2..bca3b4e 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -1168,20 +1168,20 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in
 	}
 
 	/* Now dump the cache snapshots. */
-	printk("%s" "ERROR(%d): D-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx]\n",
+	printk("%s" "ERROR(%d): D-cache idx[%x] tag[%016llx] utag[%016llx] stag[%016llx]\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       (int) info->dcache_index,
 	       info->dcache_tag,
 	       info->dcache_utag,
 	       info->dcache_stag);
-	printk("%s" "ERROR(%d): D-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
+	printk("%s" "ERROR(%d): D-cache data0[%016llx] data1[%016llx] data2[%016llx] data3[%016llx]\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       info->dcache_data[0],
 	       info->dcache_data[1],
 	       info->dcache_data[2],
 	       info->dcache_data[3]);
-	printk("%s" "ERROR(%d): I-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx] "
-	       "u[%016lx] l[%016lx]\n",
+	printk("%s" "ERROR(%d): I-cache idx[%x] tag[%016llx] utag[%016llx] stag[%016llx] "
+	       "u[%016llx] l[%016llx]\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       (int) info->icache_index,
 	       info->icache_tag,
@@ -1189,22 +1189,22 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in
 	       info->icache_stag,
 	       info->icache_upper,
 	       info->icache_lower);
-	printk("%s" "ERROR(%d): I-cache INSN0[%016lx] INSN1[%016lx] INSN2[%016lx] INSN3[%016lx]\n",
+	printk("%s" "ERROR(%d): I-cache INSN0[%016llx] INSN1[%016llx] INSN2[%016llx] INSN3[%016llx]\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       info->icache_data[0],
 	       info->icache_data[1],
 	       info->icache_data[2],
 	       info->icache_data[3]);
-	printk("%s" "ERROR(%d): I-cache INSN4[%016lx] INSN5[%016lx] INSN6[%016lx] INSN7[%016lx]\n",
+	printk("%s" "ERROR(%d): I-cache INSN4[%016llx] INSN5[%016llx] INSN6[%016llx] INSN7[%016llx]\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       info->icache_data[4],
 	       info->icache_data[5],
 	       info->icache_data[6],
 	       info->icache_data[7]);
-	printk("%s" "ERROR(%d): E-cache idx[%x] tag[%016lx]\n",
+	printk("%s" "ERROR(%d): E-cache idx[%x] tag[%016llx]\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       (int) info->ecache_index, info->ecache_tag);
-	printk("%s" "ERROR(%d): E-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
+	printk("%s" "ERROR(%d): E-cache data0[%016llx] data1[%016llx] data2[%016llx] data3[%016llx]\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       info->ecache_data[0],
 	       info->ecache_data[1],
@@ -1794,7 +1794,7 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
 	int cnt;
 
 	printk("%s: Reporting on cpu %d\n", pfx, cpu);
-	printk("%s: err_handle[%lx] err_stick[%lx] err_type[%08x:%s]\n",
+	printk("%s: err_handle[%llx] err_stick[%llx] err_type[%08x:%s]\n",
 	       pfx,
 	       ent->err_handle, ent->err_stick,
 	       ent->err_type,
@@ -1818,7 +1818,7 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
 		"privileged" : ""),
 	       ((ent->err_attrs & SUN4V_ERR_ATTRS_RES_QUEUE_FULL) ?
 		"queue-full" : ""));
-	printk("%s: err_raddr[%016lx] err_size[%u] err_cpu[%u]\n",
+	printk("%s: err_raddr[%016llx] err_size[%u] err_cpu[%u]\n",
 	       pfx,
 	       ent->err_raddr, ent->err_size, ent->err_cpu);
 
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index 92b1f8e..753d128 100644
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -263,10 +263,10 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
 		dev_set_name(&vdev->dev, "%s", bus_id_name);
 		vdev->dev_no = ~(u64)0;
 	} else if (!cfg_handle) {
-		dev_set_name(&vdev->dev, "%s-%lu", bus_id_name, *id);
+		dev_set_name(&vdev->dev, "%s-%llu", bus_id_name, *id);
 		vdev->dev_no = *id;
 	} else {
-		dev_set_name(&vdev->dev, "%s-%lu-%lu", bus_id_name,
+		dev_set_name(&vdev->dev, "%s-%llu-%llu", bus_id_name,
 			     *cfg_handle, *id);
 		vdev->dev_no = *cfg_handle;
 	}
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 6ea73da..be157a7 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -769,8 +769,8 @@ static int find_node(unsigned long addr)
 	return -1;
 }
 
-static unsigned long nid_range(unsigned long start, unsigned long end,
-			       int *nid)
+static unsigned long long nid_range(unsigned long long start,
+				    unsigned long long end, int *nid)
 {
 	*nid = find_node(start);
 	start += PAGE_SIZE;
@@ -788,8 +788,8 @@ static unsigned long nid_range(unsigned long start, unsigned long end,
 	return start;
 }
 #else
-static unsigned long nid_range(unsigned long start, unsigned long end,
-			       int *nid)
+static unsigned long long nid_range(unsigned long long start,
+				    unsigned long long end, int *nid)
 {
 	*nid = 0;
 	return end;
@@ -1016,8 +1016,8 @@ static int __init grab_mlgroups(struct mdesc_handle *md)
 		val = mdesc_get_property(md, node, "address-mask", NULL);
 		m->mask = *val;
 
-		numadbg("MLGROUP[%d]: node[%lx] latency[%lx] "
-			"match[%lx] mask[%lx]\n",
+		numadbg("MLGROUP[%d]: node[%llx] latency[%llx] "
+			"match[%llx] mask[%llx]\n",
 			count - 1, m->node, m->latency, m->match, m->mask);
 	}
 
@@ -1056,7 +1056,7 @@ static int __init grab_mblocks(struct mdesc_handle *md)
 					 "address-congruence-offset", NULL);
 		m->offset = *val;
 
-		numadbg("MBLOCK[%d]: base[%lx] size[%lx] offset[%lx]\n",
+		numadbg("MBLOCK[%d]: base[%llx] size[%llx] offset[%llx]\n",
 			count - 1, m->base, m->size, m->offset);
 	}
 
@@ -1127,7 +1127,7 @@ static int __init numa_attach_mlgroup(struct mdesc_handle *md, u64 grp,
 	n->mask = candidate->mask;
 	n->val = candidate->match;
 
-	numadbg("NUMA NODE[%d]: mask[%lx] val[%lx] (latency[%lx])\n",
+	numadbg("NUMA NODE[%d]: mask[%lx] val[%lx] (latency[%llx])\n",
 		index, n->mask, n->val, candidate->latency);
 
 	return 0;
-- 
1.6.0.2.GIT

[PATCH] sparc64: fix unsigned long long warnings in drivers

[Sam Ravnborg]

Fix warnings caused by the unsigned long long usage in sparc
specific drivers.

The drivers were considered sparc specific more or less from the
filename alone.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---

This turned out easier than expected.
There were a few generic related warnings that I did not touch.
I can split it up in smaller chunks if preferred.

	Sam

 drivers/block/sunvdc.c          |    8 ++++----
 drivers/char/hw_random/n2-drv.c |    2 +-
 drivers/net/sunvnet.c           |    8 ++++----
 drivers/sbus/char/display7seg.c |    2 +-
 sound/sparc/cs4231.c            |    2 +-
 5 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c
index 953c0b8..5861e33 100644
--- a/drivers/block/sunvdc.c
+++ b/drivers/block/sunvdc.c
@@ -153,7 +153,7 @@ static int vdc_send_attr(struct vio_driver_state *vio)
 	pkt.vdisk_block_size = port->vdisk_block_size;
 	pkt.max_xfer_size = port->max_xfer_size;
 
-	viodbg(HS, "SEND ATTR xfer_mode[0x%x] blksz[%u] max_xfer[%lu]\n",
+	viodbg(HS, "SEND ATTR xfer_mode[0x%x] blksz[%u] max_xfer[%llu]\n",
 	       pkt.xfer_mode, pkt.vdisk_block_size, pkt.max_xfer_size);
 
 	return vio_ldc_send(&port->vio, &pkt, sizeof(pkt));
@@ -164,8 +164,8 @@ static int vdc_handle_attr(struct vio_driver_state *vio, void *arg)
 	struct vdc_port *port = to_vdc_port(vio);
 	struct vio_disk_attr_info *pkt = arg;
 
-	viodbg(HS, "GOT ATTR stype[0x%x] ops[%lx] disk_size[%lu] disk_type[%x] "
-	       "xfer_mode[0x%x] blksz[%u] max_xfer[%lu]\n",
+	viodbg(HS, "GOT ATTR stype[0x%x] ops[%llx] disk_size[%llu] disk_type[%x] "
+	       "xfer_mode[0x%x] blksz[%u] max_xfer[%llu]\n",
 	       pkt->tag.stype, pkt->operations,
 	       pkt->vdisk_size, pkt->vdisk_type,
 	       pkt->xfer_mode, pkt->vdisk_block_size,
@@ -753,7 +753,7 @@ static int __devinit vdc_port_probe(struct vio_dev *vdev,
 
 	err = -ENODEV;
 	if ((vdev->dev_no << PARTITION_SHIFT) & ~(u64)MINORMASK) {
-		printk(KERN_ERR PFX "Port id [%lu] too large.\n",
+		printk(KERN_ERR PFX "Port id [%llu] too large.\n",
 		       vdev->dev_no);
 		goto err_out_release_mdesc;
 	}
diff --git a/drivers/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c
index 8859aea..9b3e09c 100644
--- a/drivers/char/hw_random/n2-drv.c
+++ b/drivers/char/hw_random/n2-drv.c
@@ -482,7 +482,7 @@ static void n2rng_dump_test_buffer(struct n2rng *np)
 	int i;
 
 	for (i = 0; i < SELFTEST_BUFFER_WORDS; i++)
-		dev_err(&np->op->dev, "Test buffer slot %d [0x%016lx]\n",
+		dev_err(&np->op->dev, "Test buffer slot %d [0x%016llx]\n",
 			i, np->test_buffer[i]);
 }
 
diff --git a/drivers/net/sunvnet.c b/drivers/net/sunvnet.c
index a720065..c5335cf 100644
--- a/drivers/net/sunvnet.c
+++ b/drivers/net/sunvnet.c
@@ -336,7 +336,7 @@ static int vnet_walk_rx_one(struct vnet_port *port,
 	if (IS_ERR(desc))
 		return PTR_ERR(desc);
 
-	viodbg(DATA, "vio_walk_rx_one desc[%02x:%02x:%08x:%08x:%lx:%lx]\n",
+	viodbg(DATA, "vio_walk_rx_one desc[%02x:%02x:%08x:%08x:%llx:%llx]\n",
 	       desc->hdr.state, desc->hdr.ack,
 	       desc->size, desc->ncookies,
 	       desc->cookies[0].cookie_addr,
@@ -394,14 +394,14 @@ static int vnet_rx(struct vnet_port *port, void *msgbuf)
 	struct vio_dring_state *dr = &port->vio.drings[VIO_DRIVER_RX_RING];
 	struct vio_driver_state *vio = &port->vio;
 
-	viodbg(DATA, "vnet_rx stype_env[%04x] seq[%016lx] rcv_nxt[%016lx]\n",
+	viodbg(DATA, "vnet_rx stype_env[%04x] seq[%016llx] rcv_nxt[%016llx]\n",
 	       pkt->tag.stype_env, pkt->seq, dr->rcv_nxt);
 
 	if (unlikely(pkt->tag.stype_env != VIO_DRING_DATA))
 		return 0;
 	if (unlikely(pkt->seq != dr->rcv_nxt)) {
-		printk(KERN_ERR PFX "RX out of sequence seq[0x%lx] "
-		       "rcv_nxt[0x%lx]\n", pkt->seq, dr->rcv_nxt);
+		printk(KERN_ERR PFX "RX out of sequence seq[0x%llx] "
+		       "rcv_nxt[0x%llx]\n", pkt->seq, dr->rcv_nxt);
 		return 0;
 	}
 
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 2550af4..1d46205 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -214,7 +214,7 @@ static int __devinit d7s_probe(struct of_device *op,
 
 	writeb(regs,  p->regs);
 
-	printk(KERN_INFO PFX "7-Segment Display%s at [%s:0x%lx] %s\n", 
+	printk(KERN_INFO PFX "7-Segment Display%s at [%s:0x%llx] %s\n", 
 	       op->node->full_name,
 	       (regs & D7S_FLIP) ? " (FLIPPED)" : "",
 	       op->resource[0].start,
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index d44bf98..41c3875 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -2057,7 +2057,7 @@ static int __devinit cs4231_ebus_probe(struct of_device *op, const struct of_dev
 	if (err)
 		return err;
 
-	sprintf(card->longname, "%s at 0x%lx, irq %d",
+	sprintf(card->longname, "%s at 0x%llx, irq %d",
 		card->shortname,
 		op->resource[0].start,
 		op->irqs[0]);
-- 
1.6.0.2.GIT

Re: [PATCH] sparc64: use unsigned long long for u64

[Ken Chen]

On Tue, Dec 23, 2008 at 5:17 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
> Andrew Morton wrote:
>
>    People keep on doing
>
>            printk("%llu", some_u64);
>
>    testing it only on x86_64 and this generates a warning storm on
>    powerpc, sparc64, etc.  Because they use `long', not `long long'.
>
>    Quite a few 64-bit architectures are using `long' for their
>    s64/u64 types.  We should convert them all to `long long'.
>
> Update types.h so we use unsigned long long for u64 and
> fix all warnings in sparc64 code.
> Tested with an allnoconfig, defconfig and allmodconfig builds.
>
> This patch introduces additional warnings in several drivers.
> These will be dealt with in separate patches.
>
> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> ---
>
> It may take a few days before the drivers gets fixed.
> Christmas is approaching fast by now.
>
>        Sam
>
> diff --git a/arch/sparc/include/asm/timer_64.h b/arch/sparc/include/asm/timer_64.h
> index 5b779fd..ef3c368 100644
> --- a/arch/sparc/include/asm/timer_64.h
> +++ b/arch/sparc/include/asm/timer_64.h
> @@ -10,7 +10,7 @@
>  #include <linux/init.h>
>
>  struct sparc64_tick_ops {
> -       unsigned long (*get_tick)(void);
> +       unsigned long long (*get_tick)(void);

wait, why does this need to be changed?


People having problem with:

        u64 data;
        seq_printf(m, "%llu ", data);

This compiles fine with arch that defines u64 to unsigned long long
(like x86), but generate compile time warning on arch that defines u64
to unsigned long.

Isn't that you just need to convert format string to %llu for u64 type?

- Ken

Re: [PATCH] sparc64: use unsigned long long for u64

[Sam Ravnborg]

On Tue, Dec 23, 2008 at 09:05:44AM -0800, Ken Chen wrote:
> On Tue, Dec 23, 2008 at 5:17 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
> > Andrew Morton wrote:
> >
> >    People keep on doing
> >
> >            printk("%llu", some_u64);
> >
> >    testing it only on x86_64 and this generates a warning storm on
> >    powerpc, sparc64, etc.  Because they use `long', not `long long'.
> >
> >    Quite a few 64-bit architectures are using `long' for their
> >    s64/u64 types.  We should convert them all to `long long'.
> >
> > Update types.h so we use unsigned long long for u64 and
> > fix all warnings in sparc64 code.
> > Tested with an allnoconfig, defconfig and allmodconfig builds.
> >
> > This patch introduces additional warnings in several drivers.
> > These will be dealt with in separate patches.
> >
> > Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
> > Cc: Andrew Morton <akpm@linux-foundation.org>
> > ---
> >
> > It may take a few days before the drivers gets fixed.
> > Christmas is approaching fast by now.
> >
> >        Sam
> >
> > diff --git a/arch/sparc/include/asm/timer_64.h b/arch/sparc/include/asm/timer_64.h
> > index 5b779fd..ef3c368 100644
> > --- a/arch/sparc/include/asm/timer_64.h
> > +++ b/arch/sparc/include/asm/timer_64.h
> > @@ -10,7 +10,7 @@
> >  #include <linux/init.h>
> >
> >  struct sparc64_tick_ops {
> > -       unsigned long (*get_tick)(void);
> > +       unsigned long long (*get_tick)(void);
> 
> wait, why does this need to be changed?

We have:
        clocksource_tick.read = tick_ops->get_tick;

And clocksource_tick is of type clocksource:

struct clocksource {
	...
        cycle_t (*read)(void);

And cycle_t is:
/* clocksource cycle base type */
typedef u64 cycle_t;

And u64 is now:
unsigned long long - thus we need to fix prototype
of get_tick to fix the warnings.

A cast could do it - but fixing the real problem
is better here.

	Sam

Re: [PATCH] sparc64: use unsigned long long for u64

[Ken Chen]

On Tue, Dec 23, 2008 at 9:26 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
>> wait, why does this need to be changed?
>
> We have:
>        clocksource_tick.read = tick_ops->get_tick;
>
> And clocksource_tick is of type clocksource:
>
> struct clocksource {
>        ...
>        cycle_t (*read)(void);
>
> And cycle_t is:
> /* clocksource cycle base type */
> typedef u64 cycle_t;
>
> And u64 is now:
> unsigned long long - thus we need to fix prototype
> of get_tick to fix the warnings.
>
> A cast could do it - but fixing the real problem
> is better here.

Sounds good to me.  It was just a question.  Thank you for the explanation.

- Ken

Re: [PATCH] sparc64: use unsigned long long for u64

[Sam Ravnborg]

On Tue, Dec 23, 2008 at 09:29:52AM -0800, Ken Chen wrote:
> On Tue, Dec 23, 2008 at 9:26 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
> >> wait, why does this need to be changed?
> >
> > We have:
> >        clocksource_tick.read = tick_ops->get_tick;
> >
> > And clocksource_tick is of type clocksource:
> >
> > struct clocksource {
> >        ...
> >        cycle_t (*read)(void);
> >
> > And cycle_t is:
> > /* clocksource cycle base type */
> > typedef u64 cycle_t;
> >
> > And u64 is now:
> > unsigned long long - thus we need to fix prototype
> > of get_tick to fix the warnings.
> >
> > A cast could do it - but fixing the real problem
> > is better here.
> 
> Sounds good to me.  It was just a question.  Thank you for the explanation.

Hey - it triggered me to take a deeper look at it.
And thanks for actually reading the patch - it's always good that
an extra pair of eyes look over it even it is only quick browsing.

	Sam

Re: [PATCH] sparc64: use unsigned long long for u64

[David Miller]

From: Sam Ravnborg <sam@ravnborg.org>
Date: Tue, 23 Dec 2008 14:17:46 +0100

> It may take a few days before the drivers gets fixed.
> Christmas is approaching fast by now.

Even with this and your driver patch applied, the tree
doesn't build successfully:

cc1: warnings being treated as errors
arch/sparc/kernel/psycho_common.c: In function ‘psycho_check_stc_error’:
arch/sparc/kernel/psycho_common.c:104: warning: format ‘%016lx’ expects type ‘long unsigned int’, but argument 4 has type ‘long long unsigned int’

Did you remove sparc's -Werror when doing test builds
of these changes? :-)

Either way these need some work before they should be
added to any tree.

Andrew you probably want to toss these from your tree
since at a minimum they will break the sparc64 build.

Sam will fix them up and resubmit, and I'll apply them,
don't worry. :)

Re: [PATCH] sparc64: use unsigned long long for u64

[Sam Ravnborg]

On Sat, Dec 27, 2008 at 12:54:52AM -0800, David Miller wrote:
> From: Sam Ravnborg <sam@ravnborg.org>
> Date: Tue, 23 Dec 2008 14:17:46 +0100
> 
> > It may take a few days before the drivers gets fixed.
> > Christmas is approaching fast by now.
> 
> Even with this and your driver patch applied, the tree
> doesn't build successfully:
> 
> cc1: warnings being treated as errors
> arch/sparc/kernel/psycho_common.c: In function ‘psycho_check_stc_error’:
> arch/sparc/kernel/psycho_common.c:104: warning: format ‘%016lx’ expects type ‘long unsigned int’, but argument 4 has type ‘long long unsigned int’
> 
> Did you remove sparc's -Werror when doing test builds
> of these changes? :-)
No - it is worse than that.
My gcc does not complain about the above.

Just to check that I was not fouled by some preprocessor magic
here is the preprocessed code:

   printk("<3>" "%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)"
          "V(%d)W(%d)]\n",
          pbm->name,
          i,
          ((tagval & 0x0fffffff00000000UL) >> 19UL),
          (tagval & 0x00000000ffffe000UL),
          ((tagval & 0x0000000000000002UL) ? 1 : 0),
          ((tagval & 0x0000000000000001UL) ? 1 : 0));


tagval is u64.

So it looks like my gcc does not promote:
((tagval & 0x0fffffff00000000UL) >> 19UL) to unsigned long long int
but your gcc does?

My gcc (build with Dan Kegel's crosstool):
$ /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/bin/sparc64-unknown-linux-gnu-gcc -v
Reading specs from /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/lib/gcc/sparc64-unknown-linux-gnu/3.4.5/specs
Configured with: /home/sam/devel/crosstool-0.43/build/sparc64-unknown-linux-gnu/gcc-3.4.5-glibc-2.3.6/gcc-3.4.5/configure --target=sparc64-unknown-linux-gnu --host=i686-host_pc-linux-gnu --prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu --disable-multilib --with-cpu=ultrasparc3 --enable-cxx-flags=-mcpu=ultrasparc3 --with-headers=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu/include --with-local-prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu --disable-nls --enable-threads=posix --enable-symvers=gnu --enable-__cxa_atexit --enable-languages=c --enable-shared --enable-c99 --enable-long-long
Thread model: posix
gcc version 3.4.5

> 
> Either way these need some work before they should be
> added to any tree.
> 
> Andrew you probably want to toss these from your tree
> since at a minimum they will break the sparc64 build.
> 
> Sam will fix them up and resubmit, and I'll apply them,
> don't worry. :)
Yup - I added Andrew on cc: only as information.

	Sam

Re: [PATCH] sparc64: use unsigned long long for u64

[David Miller]

From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 27 Dec 2008 10:24:04 +0100

> So it looks like my gcc does not promote:
> ((tagval & 0x0fffffff00000000UL) >> 19UL) to unsigned long long int
> but your gcc does?
> 
> My gcc (build with Dan Kegel's crosstool):
> $ /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/bin/sparc64-unknown-linux-gnu-gcc -v
> Reading specs from /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/lib/gcc/sparc64-unknown-linux-gnu/3.4.5/specs
> Configured with: /home/sam/devel/crosstool-0.43/build/sparc64-unknown-linux-gnu/gcc-3.4.5-glibc-2.3.6/gcc-3.4.5/configure --target=sparc64-unknown-linux-gnu --host=i686-host_pc-linux-gnu --prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu --disable-multilib --with-cpu=ultrasparc3 --enable-cxx-flags=-mcpu=ultrasparc3 --with-headers=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu/include --with-local-prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu --disable-nls --enable-threads=posix --enable-symvers=gnu --enable-__cxa_atexit --enable-languages=c --enable-shared --enable-c99 --enable-long-long
> Thread model: posix
> gcc version 3.4.5

I'm using a native gcc-4.1.3 here:

gcc (GCC) 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)

When you cross build 32-bit to 64-bit, a small but non-zero
number of warning checks and optimizations are not performed
and I think that is what you're hitting here.

Re: [PATCH] sparc64: use unsigned long long for u64

[Sam Ravnborg]

On Sat, Dec 27, 2008 at 01:37:12AM -0800, David Miller wrote:
> From: Sam Ravnborg <sam@ravnborg.org>
> Date: Sat, 27 Dec 2008 10:24:04 +0100
> 
> > So it looks like my gcc does not promote:
> > ((tagval & 0x0fffffff00000000UL) >> 19UL) to unsigned long long int
> > but your gcc does?
> > 
> > My gcc (build with Dan Kegel's crosstool):
> > $ /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/bin/sparc64-unknown-linux-gnu-gcc -v
> > Reading specs from /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/lib/gcc/sparc64-unknown-linux-gnu/3.4.5/specs
> > Configured with: /home/sam/devel/crosstool-0.43/build/sparc64-unknown-linux-gnu/gcc-3.4.5-glibc-2.3.6/gcc-3.4.5/configure --target=sparc64-unknown-linux-gnu --host=i686-host_pc-linux-gnu --prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu --disable-multilib --with-cpu=ultrasparc3 --enable-cxx-flags=-mcpu=ultrasparc3 --with-headers=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu/include --with-local-prefix=/opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/sparc64-unknown-linux-gnu --disable-nls --enable-threads=posix --enable-symvers=gnu --enable-__cxa_atexit --enable-languages=c --enable-shared --enable-c99 --enable-long-long
> > Thread model: posix
> > gcc version 3.4.5
> 
> I'm using a native gcc-4.1.3 here:
> 
> gcc (GCC) 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)
> 
> When you cross build 32-bit to 64-bit, a small but non-zero
> number of warning checks and optimizations are not performed
> and I think that is what you're hitting here.

OK.
I have ordered a used Sun Blade 100(*) that should show up
before new eve.
So when I have it and it is up and running I will redo this
patch set. That will likely take a few weeks though.

(*) Any distribution recommendations? I will only use it for
    sparc kernel development so nothing fancy...

	Sam

Re: [PATCH] sparc64: use unsigned long long for u64

[David Miller]

From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 27 Dec 2008 10:49:55 +0100

> I have ordered a used Sun Blade 100(*) that should show up
> before new eve.
> So when I have it and it is up and running I will redo this
> patch set. That will likely take a few weeks though.

Another option, of course, is to use 64-bit cross tools
on an x86_64 system if you have access to one of those.

> (*) Any distribution recommendations? I will only use it for
>     sparc kernel development so nothing fancy...

Debian testing works fine, and that's what I'm typing this
on.

Re: [PATCH] sparc64: use unsigned long long for u64

[Sam Ravnborg]

On Sat, Dec 27, 2008 at 08:25:52PM -0800, David Miller wrote:
> From: Sam Ravnborg <sam@ravnborg.org>
> Date: Sat, 27 Dec 2008 10:49:55 +0100
> 
> > I have ordered a used Sun Blade 100(*) that should show up
> > before new eve.
> > So when I have it and it is up and running I will redo this
> > patch set. That will likely take a few weeks though.
> 
> Another option, of course, is to use 64-bit cross tools
> on an x86_64 system if you have access to one of those.
It needs a new motherboard and I used my savings on a Sun blade...

> 
> > (*) Any distribution recommendations? I will only use it for
> >     sparc kernel development so nothing fancy...
> 
> Debian testing works fine, and that's what I'm typing this
> on.
Thanks!

	Sam

Re: [patch] powerpc: change u64/s64 to a long long integer type

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 4180 bytes --]

Hi Ingo,

On Mon, 22 Dec 2008 09:03:41 +0100 Ingo Molnar <mingo@elte.hu> wrote:
>
> Subject: powerpc: change u64/s64 to a long long integer type
> From: Ingo Molnar <mingo@elte.hu>
> Date: Mon Dec 22 08:32:41 CET 2008
> 
> Convert arch/powerpc/ over to long long based u64:
> 
>  -#ifdef __powerpc64__
>  -# include <asm-generic/int-l64.h>
>  -#else
>  -# include <asm-generic/int-ll64.h>
>  -#endif
>  +#include <asm-generic/int-ll64.h>
> 
> This will avoid reoccuring spurious warnings in core kernel code that 
> comes when people test on their own hardware. (i.e. x86 in ~98% of the 
> cases) This is what x86 uses and it generally helps keep 64-bit code 
> 32-bit clean too.

Thanks for this great start.  Just a few comments ...

Firstly, it would be nice if we could split this into things we can do
now (e.g. logical bug fixes) and things that must be done at the time of
the u64 type change (e.g. the printk's etc).  That will make the second
patch hopefully somewhat smaller.

> Index: linux/arch/powerpc/kernel/prom.c
> ===================================================================
> --- linux.orig/arch/powerpc/kernel/prom.c
> +++ linux/arch/powerpc/kernel/prom.c
> @@ -824,11 +824,11 @@ static int __init early_init_dt_scan_cho
>  #endif
>  
>  #ifdef CONFIG_KEXEC
> -	lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
> +	lprop = (unsigned long *)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
>  	if (lprop)
>  		crashk_res.start = *lprop;
>  
> -	lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-size", NULL);
> +	lprop = (unsigned long *)of_get_flat_dt_prop(node, "linux,crashkernel-size", NULL);

These casts are actually not needed at all as of_get_flat_dt_prop()
returns "void *".

> Index: linux/arch/powerpc/oprofile/cell/vma_map.c
> ===================================================================
> --- linux.orig/arch/powerpc/oprofile/cell/vma_map.c
> +++ linux/arch/powerpc/oprofile/cell/vma_map.c
> @@ -92,7 +92,7 @@ vma_map_add(struct vma_to_fileoffset_map
>   * A pointer to the first vma_map in the generated list
>   * of vma_maps is returned.  */
>  struct vma_to_fileoffset_map *create_vma_map(const struct spu *aSpu,
> -					     unsigned long __spu_elf_start)
> +					     u64 __spu_elf_start)

Wouldn't it make more sense to change the prototype to match the
implementation and the only caller (which passes an "unsigned long")?

> Index: linux/arch/powerpc/platforms/cell/interrupt.c
> ===================================================================
> --- linux.orig/arch/powerpc/platforms/cell/interrupt.c
> +++ linux/arch/powerpc/platforms/cell/interrupt.c
> @@ -148,7 +148,7 @@ static unsigned int iic_get_irq(void)
>  
>  	iic = &__get_cpu_var(iic);
>  	*(unsigned long *) &pending =
> -		in_be64((unsigned long __iomem *) &iic->regs->pending_destr);
> +		in_be64((unsigned long long __iomem *) &iic->regs->pending_destr);

in_be64()'s argument is "const volatile u64 __iomem *" so the
original "unsigned long" should have been "u64".

> Index: linux/arch/powerpc/platforms/cell/spu_base.c
> ===================================================================
> --- linux.orig/arch/powerpc/platforms/cell/spu_base.c
> +++ linux/arch/powerpc/platforms/cell/spu_base.c
> @@ -139,10 +139,10 @@ static void spu_restart_dma(struct spu *
>  {
>  	struct spu_priv2 __iomem *priv2 = spu->priv2;
>  
> -	if (!test_bit(SPU_CONTEXT_SWITCH_PENDING, &spu->flags))
> +	if (!test_bit(SPU_CONTEXT_SWITCH_PENDING, (unsigned long *)&spu->flags))
>  		out_be64(&priv2->mfc_control_RW, MFC_CNTL_RESTART_DMA_COMMAND);
>  	else {
> -		set_bit(SPU_CONTEXT_FAULT_PENDING, &spu->flags);
> +		set_bit(SPU_CONTEXT_FAULT_PENDING, (unsigned long *)&spu->flags);

I have submitted a different patch for this.  The bitops work on unsigned
longs, so I changed the "flags" to be unsigned long.

So, would you like me to push this along - including splitting it up a
bit (keeping your Signed-off-by, of course)?
-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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Re: [patch] powerpc: change u64/s64 to a long long integer type

[Ingo Molnar]

* Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> So, would you like me to push this along - including splitting it up a
> bit (keeping your Signed-off-by, of course)?

Sure, feel free - this should really be done by someone with more PowerPC 
interest/experience than me.

	Ingo

Re: linux-next: sched tree build warning

[Ingo Molnar]

* David Rientjes <rientjes@google.com> wrote:

> On Thu, 7 May 2009, Stephen Rothwell wrote:
> 
> > Hi all,
> > 
> > Today's linux-next build (powerpc ppc64_defconfig) produced this warning:
> > 
> > kernel/sched.c: In function 'sched_show_task':
> > kernel/sched.c:6677: warning: format '%08x' expects type 'unsigned int', but argument 5 has type 'long unsigned int'
> > 
> > Introduced by commit 12b5c43486202dd4ff3cfd59a190984a0dd7f6fd ("sched:
> > emit thread info flags with stack trace") from the sched tree.
> > 
> > thread_info::flags is "unsigned long" on all architectures except alpha
> > (where it is "unsigned int"), ia64 and x86 (where it is "__u32").
> > 
> 
> Thanks Stephen.  There's a hacky way around this if Ingo will put 
> up with it.

> -	printk(KERN_CONT "%5lu %5d %6d 0x%08x\n", free,
> +	printk(KERN_CONT "%5lu %5d %6d 0x%08lx\n", free,
>  		task_pid_nr(p), task_pid_nr(p->real_parent),
> -		task_thread_info(p)->flags);
> +		(unsigned long)task_thread_info(p)->flags);

applied, thanks.

	Ingo

Re: linux-next: sched tree build warning

[David Rientjes]

On Thu, 7 May 2009, Stephen Rothwell wrote:

> Hi all,
> 
> Today's linux-next build (powerpc ppc64_defconfig) produced this warning:
> 
> kernel/sched.c: In function 'sched_show_task':
> kernel/sched.c:6677: warning: format '%08x' expects type 'unsigned int', but argument 5 has type 'long unsigned int'
> 
> Introduced by commit 12b5c43486202dd4ff3cfd59a190984a0dd7f6fd ("sched:
> emit thread info flags with stack trace") from the sched tree.
> 
> thread_info::flags is "unsigned long" on all architectures except alpha
> (where it is "unsigned int"), ia64 and x86 (where it is "__u32").
> 

Thanks Stephen.  There's a hacky way around this if Ingo will put up with 
it.



No architecture uses more than 32 bits for thread info flags, yet most 
declare it with type `unsigned long'.  Thus, we only show 32 bits but cast 
the variable to unsigned long for all architectures.

Signed-off-by: David Rientjes <rientjes@google.com>
---
diff --git a/kernel/sched.c b/kernel/sched.c
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6490,9 +6490,9 @@ void sched_show_task(struct task_struct *p)
 #ifdef CONFIG_DEBUG_STACK_USAGE
 	free = stack_not_used(p);
 #endif
-	printk(KERN_CONT "%5lu %5d %6d 0x%08x\n", free,
+	printk(KERN_CONT "%5lu %5d %6d 0x%08lx\n", free,
 		task_pid_nr(p), task_pid_nr(p->real_parent),
-		task_thread_info(p)->flags);
+		(unsigned long)task_thread_info(p)->flags);
 
 	show_stack(p, NULL);
 }

linux-next: sched tree build warning

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 643 bytes --]

Hi all,

Today's linux-next build (powerpc ppc64_defconfig) produced this warning:

kernel/sched.c: In function 'sched_show_task':
kernel/sched.c:6677: warning: format '%08x' expects type 'unsigned int', but argument 5 has type 'long unsigned int'

Introduced by commit 12b5c43486202dd4ff3cfd59a190984a0dd7f6fd ("sched:
emit thread info flags with stack trace") from the sched tree.

thread_info::flags is "unsigned long" on all architectures except alpha
(where it is "unsigned int"), ia64 and x86 (where it is "__u32").

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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Re: linux-next: sched tree build warning

[Rusty Russell]

On Tue, 21 Apr 2009 09:57:06 am Stephen Rothwell wrote:
> Should this call to first_cpu be cpumask_first?

Always.  Old cpu ops should die.  (I didn't actually read this code,
but it's a truism).

Thanks,
Rusty.

Re: linux-next: sched tree build warning

[Ingo Molnar]

* Gautham R Shenoy <ego@in.ibm.com> wrote:

> On Tue, Apr 21, 2009 at 10:27:06AM +1000, Stephen Rothwell wrote:
> > Hi all,
> > 
> > Today's linux-next build (powerpc ppc64_defconfig) produced this new
> > warning:
> > 
> > kernel/sched.c: In function 'find_new_ilb':
> > kernel/sched.c:4355: warning: passing argument 1 of '__first_cpu' from incompatible pointer type
> > 
> > Possibly caused by commit f711f6090a81cbd396b63de90f415d33f563af9b
> > ("sched: Nominate idle load balancer from a semi-idle package") from the
> > sched tree.  Should this call to first_cpu be cpumask_first?
> 
> Yes, it should be cpumask_first. Patch appended.
> 
> -->
> sched: Replace first_cpu() with cpumask_first() in ILB nomination code.
> 
> From: Gautham R Shenoy <ego@in.ibm.com>
> 
> For !(CONFIG_SCHED_MC || CONFIG_SCHED_SMT), find_new_ilb() nominates the
> Idle load balancer as the first cpu from the nohz.cpu_mask.
> 
> This code uses the older API first_cpu(). Replace it with cpumask_first(),
> which is the correct API here.
> 
> Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
> ---
> 
>  kernel/sched.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> 
> diff --git a/kernel/sched.c b/kernel/sched.c
> index bbf367d..6df8dd5 100644
> --- a/kernel/sched.c
> +++ b/kernel/sched.c
> @@ -4344,7 +4344,7 @@ out_done:
>  #else /*  (CONFIG_SCHED_MC || CONFIG_SCHED_SMT) */
>  static inline int find_new_ilb(int call_cpu)
>  {
> -	return first_cpu(nohz.cpu_mask);
> +	return cpumask_first(nohz.cpu_mask);

Given that this is not an onstack cpumask the type mismatch is 
harmless in effect but obviously needs fixed.

I've applied your fix to tip:sched/core - thanks guys.

	Ingo

Re: linux-next: sched tree build warning

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 267 bytes --]

Hi Gautham,

On Tue, 21 Apr 2009 08:40:49 +0530 Gautham R Shenoy <ego@in.ibm.com> wrote:
>
> Yes, it should be cpumask_first. Patch appended.

Thanks.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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Re: linux-next: sched tree build warning

[Gautham R Shenoy]

On Tue, Apr 21, 2009 at 10:27:06AM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next build (powerpc ppc64_defconfig) produced this new
> warning:
> 
> kernel/sched.c: In function 'find_new_ilb':
> kernel/sched.c:4355: warning: passing argument 1 of '__first_cpu' from incompatible pointer type
> 
> Possibly caused by commit f711f6090a81cbd396b63de90f415d33f563af9b
> ("sched: Nominate idle load balancer from a semi-idle package") from the
> sched tree.  Should this call to first_cpu be cpumask_first?

Yes, it should be cpumask_first. Patch appended.

-->
sched: Replace first_cpu() with cpumask_first() in ILB nomination code.

From: Gautham R Shenoy <ego@in.ibm.com>

For !(CONFIG_SCHED_MC || CONFIG_SCHED_SMT), find_new_ilb() nominates the
Idle load balancer as the first cpu from the nohz.cpu_mask.

This code uses the older API first_cpu(). Replace it with cpumask_first(),
which is the correct API here.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
---

 kernel/sched.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


diff --git a/kernel/sched.c b/kernel/sched.c
index bbf367d..6df8dd5 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4344,7 +4344,7 @@ out_done:
 #else /*  (CONFIG_SCHED_MC || CONFIG_SCHED_SMT) */
 static inline int find_new_ilb(int call_cpu)
 {
-	return first_cpu(nohz.cpu_mask);
+	return cpumask_first(nohz.cpu_mask);
 }
 #endif
 

> 
> -- 
> Cheers,
> Stephen Rothwell                    sfr@canb.auug.org.au
> http://www.canb.auug.org.au/~sfr/



-- 
Thanks and Regards
gautham

linux-next: sched tree build warning

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 551 bytes --]

Hi all,

Today's linux-next build (powerpc ppc64_defconfig) produced this new
warning:

kernel/sched.c: In function 'find_new_ilb':
kernel/sched.c:4355: warning: passing argument 1 of '__first_cpu' from incompatible pointer type

Possibly caused by commit f711f6090a81cbd396b63de90f415d33f563af9b
("sched: Nominate idle load balancer from a semi-idle package") from the
sched tree.  Should this call to first_cpu be cpumask_first?

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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