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authorMilton Miller <miltonm@bga.com>2007-10-15 17:00:19 +0200
committerIngo Molnar <mingo@elte.hu>2007-10-15 17:00:19 +0200
commit97b6ea7b6369d51a451a7d5747a7939a593fdd9c (patch)
tree7cc4b183909a1bdcbae6274862552938c180f740
parent5cf9f062c8e33d5a09eaa447550330162b2a96ed (diff)
sched: domain sysctl fixes: use for_each_online_cpu()
init_sched_domain_sysctl was walking cpus 0-n and referencing per_cpu variables. If the cpus_possible mask is not contigious this will result in a crash referencing unallocated data. If the online mask is not contigious then we would show offline cpus and miss online ones. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/sched.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index d29950a6041..374f42170d6 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5326,11 +5326,12 @@ static void init_sched_domain_sysctl(void)
sd_ctl_dir[0].child = entry;
- for (i = 0; i < cpu_num; i++, entry++) {
+ for_each_online_cpu(i) {
snprintf(buf, 32, "cpu%d", i);
entry->procname = kstrdup(buf, GFP_KERNEL);
entry->mode = 0555;
entry->child = sd_alloc_ctl_cpu_table(i);
+ entry++;
}
sd_sysctl_header = register_sysctl_table(sd_ctl_root);
}