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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-09 10:37:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-09 10:37:28 -0700
commit17b2e9bf27d417bc186cc922b4d6d5eaa048f9d8 (patch)
tree7ae99be289ec2ffe68aa38926d9e9a13e4387ee0 /kernel/sched_cpupri.c
parent422a253483aa5de71a2bcdc27b0aa023053f97f8 (diff)
parente3c8ca8336707062f3f7cb1cd7e6b3c753baccdd (diff)
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: do not count frozen tasks toward load sched: refresh MAINTAINERS entry sched: Print sched_group::__cpu_power in sched_domain_debug cpuacct: add per-cgroup utime/stime statistics posixtimers, sched: Fix posix clock monotonicity sched_rt: don't allocate cpumask in fastpath cpuacct: make cpuacct hierarchy walk in cpuacct_charge() safe when rcupreempt is used -v2
Diffstat (limited to 'kernel/sched_cpupri.c')
-rw-r--r--kernel/sched_cpupri.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c
index 1e00bfacf9b8..cdd3c89574cd 100644
--- a/kernel/sched_cpupri.c
+++ b/kernel/sched_cpupri.c
@@ -55,7 +55,7 @@ static int convert_prio(int prio)
* cpupri_find - find the best (lowest-pri) CPU in the system
* @cp: The cpupri context
* @p: The task
- * @lowest_mask: A mask to fill in with selected CPUs
+ * @lowest_mask: A mask to fill in with selected CPUs (or NULL)
*
* Note: This function returns the recommended CPUs as calculated during the
* current invokation. By the time the call returns, the CPUs may have in
@@ -81,7 +81,8 @@ int cpupri_find(struct cpupri *cp, struct task_struct *p,
if (cpumask_any_and(&p->cpus_allowed, vec->mask) >= nr_cpu_ids)
continue;
- cpumask_and(lowest_mask, &p->cpus_allowed, vec->mask);
+ if (lowest_mask)
+ cpumask_and(lowest_mask, &p->cpus_allowed, vec->mask);
return 1;
}