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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-04-11 07:52:52 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-11 15:18:31 +0200 |
| commit | a283a52520569195c2d26d75455cddab758f530b (patch) | |
| tree | 3ea10360b06dad909dc5b9e48b7236bcf23f3fab | |
| parent | [PATCH] for_each_possible_cpu: sparc (diff) | |
| download | linux-a283a52520569195c2d26d75455cddab758f530b.tar.xz linux-a283a52520569195c2d26d75455cddab758f530b.zip | |
[PATCH] for_each_possible_cpu: sparc64
for_each_cpu() actually iterates across all possible CPUs. We've had mistakes
in the past where people were using for_each_cpu() where they should have been
iterating across only online or present CPUs. This is inefficient and
possibly buggy.
We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the
future.
This patch replaces for_each_cpu with for_each_possible_cpu.
for sparc64.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/sparc64/kernel/pci_sun4v.c | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/setup.c | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/smp.c | 6 | ||||
| -rw-r--r-- | include/asm-sparc64/percpu.h | 2 |
4 files changed, 6 insertions, 6 deletions
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c index 9372d4f376d5..9e94db2573a2 100644 --- a/arch/sparc64/kernel/pci_sun4v.c +++ b/arch/sparc64/kernel/pci_sun4v.c @@ -1092,7 +1092,7 @@ void sun4v_pci_init(int node, char *model_name) } } - for_each_cpu(i) { + for_each_possible_cpu(i) { unsigned long page = get_zeroed_page(GFP_ATOMIC); if (!page) diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c index 7d0e67c1ce50..005167f82419 100644 --- a/arch/sparc64/kernel/setup.c +++ b/arch/sparc64/kernel/setup.c @@ -535,7 +535,7 @@ static int __init topology_init(void) while (!cpu_find_by_instance(ncpus_probed, NULL, NULL)) ncpus_probed++; - for_each_cpu(i) { + for_each_possible_cpu(i) { struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL); if (p) { register_cpu(p, i, NULL); diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index eb36f7988ff7..90eaca3ec9a6 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -1280,7 +1280,7 @@ int setup_profiling_timer(unsigned int multiplier) return -EINVAL; spin_lock_irqsave(&prof_setup_lock, flags); - for_each_cpu(i) + for_each_possible_cpu(i) prof_multiplier(i) = multiplier; current_tick_offset = (timer_tick_offset / multiplier); spin_unlock_irqrestore(&prof_setup_lock, flags); @@ -1308,12 +1308,12 @@ void __init smp_prepare_cpus(unsigned int max_cpus) } } - for_each_cpu(i) { + for_each_possible_cpu(i) { if (tlb_type == hypervisor) { int j; /* XXX get this mapping from machine description */ - for_each_cpu(j) { + for_each_possible_cpu(j) { if ((j >> 2) == (i >> 2)) cpu_set(j, cpu_sibling_map[i]); } diff --git a/include/asm-sparc64/percpu.h b/include/asm-sparc64/percpu.h index 82032e159a76..baef13b58952 100644 --- a/include/asm-sparc64/percpu.h +++ b/include/asm-sparc64/percpu.h @@ -26,7 +26,7 @@ register unsigned long __local_per_cpu_offset asm("g5"); #define percpu_modcopy(pcpudst, src, size) \ do { \ unsigned int __i; \ - for_each_cpu(__i) \ + for_each_possible_cpu(__i) \ memcpy((pcpudst)+__per_cpu_offset(__i), \ (src), (size)); \ } while (0) |