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[PATCH] for_each_possible_cpu: powerpc

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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>
This commit is contained in:
KAMEZAWA Hiroyuki
2006-03-28 14:50:51 -08:00
committed by Paul Mackerras
parent bab70a4af7
commit 0e5519548f
14 changed files with 21 additions and 21 deletions
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6
arch/powerpc/kernel/setup_64.c
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@@ -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);