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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 21:23:33 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 21:23:33 +0300
commit65b2074f84be2287e020839e93b4cdaaf60eb37c (patch)
treed020c3c37fa5b112ee531b324214236bef9feec6 /kernel/printk.c
parent28d9bfc37c861aa9c8386dff1ac7e9a10e5c5162 (diff)
parent6bf4123760a5aece6e4829ce90b70b6ffd751d65 (diff)
downloadlinux-65b2074f84be2287e020839e93b4cdaaf60eb37c.tar.xz
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits) sched: Change wait_for_completion_*_timeout() to return a signed long sched, autogroup: Fix reference leak sched, autogroup: Fix potential access to freed memory sched: Remove redundant CONFIG_CGROUP_SCHED ifdef sched: Fix interactivity bug by charging unaccounted run-time on entity re-weight sched: Move periodic share updates to entity_tick() printk: Use this_cpu_{read|write} api on printk_pending sched: Make pushable_tasks CONFIG_SMP dependant sched: Add 'autogroup' scheduling feature: automated per session task groups sched: Fix unregister_fair_sched_group() sched: Remove unused argument dest_cpu to migrate_task() mutexes, sched: Introduce arch_mutex_cpu_relax() sched: Add some clock info to sched_debug cpu: Remove incorrect BUG_ON cpu: Remove unused variable sched: Fix UP build breakage sched: Make task dump print all 15 chars of proc comm sched: Update tg->shares after cpu.shares write sched: Allow update_cfs_load() to update global load sched: Implement demand based update_cfs_load() ...
Diffstat (limited to 'kernel/printk.c')
-rw-r--r--kernel/printk.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index a23315dc4498..ab3ffc5b3b64 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1074,17 +1074,17 @@ static DEFINE_PER_CPU(int, printk_pending);
void printk_tick(void)
{
- if (__get_cpu_var(printk_pending)) {
- __get_cpu_var(printk_pending) = 0;
+ if (__this_cpu_read(printk_pending)) {
+ __this_cpu_write(printk_pending, 0);
wake_up_interruptible(&log_wait);
}
}
int printk_needs_cpu(int cpu)
{
- if (unlikely(cpu_is_offline(cpu)))
+ if (cpu_is_offline(cpu))
printk_tick();
- return per_cpu(printk_pending, cpu);
+ return __this_cpu_read(printk_pending);
}
void wake_up_klogd(void)