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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-29 14:46:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-29 14:46:05 -0700
commit7fda0412c5f7afdd1a5ff518f98dee5157266d8a (patch)
treed312af46758fa9b59431a479d258b54184a00591 /kernel/cpuset.c
parent6b8212a313dae341ef3a2e413dfec5c4dea59617 (diff)
parent160594e99dbbb0a5600ad922c630952c7c1c14bf (diff)
downloadop-kernel-dev-7fda0412c5f7afdd1a5ff518f98dee5157266d8a.zip
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Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar. * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpusets: Remove an unused variable sched/rt: Improve pick_next_highest_task_rt() sched: Fix select_fallback_rq() vs cpu_active/cpu_online sched/x86/smp: Do not enable IRQs over calibrate_delay() sched: Fix compiler warning about declared inline after use MAINTAINERS: Update email address for SCHEDULER and PERF EVENTS
Diffstat (limited to 'kernel/cpuset.c')
-rw-r--r--kernel/cpuset.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 1010cc6..b96ad75 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -2162,10 +2162,9 @@ void cpuset_cpus_allowed(struct task_struct *tsk, struct cpumask *pmask)
mutex_unlock(&callback_mutex);
}
-int cpuset_cpus_allowed_fallback(struct task_struct *tsk)
+void cpuset_cpus_allowed_fallback(struct task_struct *tsk)
{
const struct cpuset *cs;
- int cpu;
rcu_read_lock();
cs = task_cs(tsk);
@@ -2186,22 +2185,10 @@ int cpuset_cpus_allowed_fallback(struct task_struct *tsk)
* changes in tsk_cs()->cpus_allowed. Otherwise we can temporary
* set any mask even if it is not right from task_cs() pov,
* the pending set_cpus_allowed_ptr() will fix things.
+ *
+ * select_fallback_rq() will fix things ups and set cpu_possible_mask
+ * if required.
*/
-
- cpu = cpumask_any_and(&tsk->cpus_allowed, cpu_active_mask);
- if (cpu >= nr_cpu_ids) {
- /*
- * Either tsk->cpus_allowed is wrong (see above) or it
- * is actually empty. The latter case is only possible
- * if we are racing with remove_tasks_in_empty_cpuset().
- * Like above we can temporary set any mask and rely on
- * set_cpus_allowed_ptr() as synchronization point.
- */
- do_set_cpus_allowed(tsk, cpu_possible_mask);
- cpu = cpumask_any(cpu_active_mask);
- }
-
- return cpu;
}
void cpuset_init_current_mems_allowed(void)
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