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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2006-04-10 22:52:52 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-11 06:18:31 -0700
commita283a52520569195c2d26d75455cddab758f530b (patch)
tree3ea10360b06dad909dc5b9e48b7236bcf23f3fab /arch/sparc64
parentfff8efe7b71efd88829782be64dc42c25c70ad53 (diff)
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[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>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/kernel/pci_sun4v.c2
-rw-r--r--arch/sparc64/kernel/setup.c2
-rw-r--r--arch/sparc64/kernel/smp.c6
3 files changed, 5 insertions, 5 deletions
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index 9372d4f..9e94db2 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 7d0e67c..005167f 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 eb36f79..90eaca3 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]);
}