From 0e5519548fdc8eadc3eacb49b1908d44d347fb2b Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Tue, 28 Mar 2006 14:50:51 -0800 Subject: [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 Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/setup_64.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/powerpc/kernel/setup_64.c') 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); -- cgit v1.2.3