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| author |   KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-03-28 14:50:51 -0800 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2006-03-29 13:44:15 +1100 |
| commit | 0e5519548fdc8eadc3eacb49b1908d44d347fb2b (patch) | |
| tree | 176d01babed4ece005f6c4715c464411c4262e9b /arch/powerpc/kernel/setup_64.c | |
| parent | [PATCH] lock PTE before updating it in 440/BookE page fault handler (diff) | |
| download | linux-dev-0e5519548fdc8eadc3eacb49b1908d44d347fb2b.tar.xz linux-dev-0e5519548fdc8eadc3eacb49b1908d44d347fb2b.zip | |
[PATCH] for_each_possible_cpu: powerpc
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.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 05b152299396..59aa92cd6fa4 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -474,7 +474,7 @@ static void __init irqstack_early_init(void) * interrupt stacks must be under 256MB, we cannot afford to take * SLB misses on them. */ - for_each_cpu(i) { + for_each_possible_cpu(i) { softirq_ctx[i] = (struct thread_info *) __va(lmb_alloc_base(THREAD_SIZE, THREAD_SIZE, 0x10000000)); @@ -507,7 +507,7 @@ static void __init emergency_stack_init(void) */ limit = min(0x10000000UL, lmb.rmo_size); - for_each_cpu(i) + for_each_possible_cpu(i) paca[i].emergency_sp = __va(lmb_alloc_base(HW_PAGE_SIZE, 128, limit)) + HW_PAGE_SIZE; } @@ -624,7 +624,7 @@ void __init setup_per_cpu_areas(void) size = PERCPU_ENOUGH_ROOM; #endif - for_each_cpu(i) { + for_each_possible_cpu(i) { ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size); if (!ptr) panic("Cannot allocate cpu data for CPU %d\n", i); |