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[PATCH] for_each_possible_cpu: ppc

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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 14:50:52 -08:00 committed by Paul Mackerras
parent 0e5519548f
commit b848e0a07d
2 changed files with 2 additions and 2 deletions
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2
arch/ppc/kernel/setup.c
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@ -474,7 +474,7 @@ int __init ppc_init(void)
if ( ppc_md.progress ) ppc_md.progress(" ", 0xffff);
/* register CPU devices */
for_each_cpu(i)
for_each_possible_cpu(i)
register_cpu(&cpu_devices[i], i, NULL);
/* call platform init */

2
arch/ppc/kernel/smp.c
View File

@ -311,7 +311,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
/* Backup CPU 0 state */
__save_cpu_setup();
for_each_cpu(cpu) {
for_each_possible_cpu(cpu) {
if (cpu == smp_processor_id())
continue;
/* create a process for the processor */