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| author |   Peter Zijlstra <peterz@infradead.org> | 2011-06-16 12:23:22 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2011-10-06 12:46:56 +0200 |
| commit | fa17b507f142d37aeac322a95f6f7c6375f25601 (patch) | |
| tree | 5ff8b9d7087175aca85dff3393932fe9b5497425 /kernel/sched.c | |
| parent | sched: Request for idle balance during nohz idle load balance (diff) | |
| download | linux-dev-fa17b507f142d37aeac322a95f6f7c6375f25601.tar.xz linux-dev-fa17b507f142d37aeac322a95f6f7c6375f25601.zip | |
sched: Wrap scheduler p->cpus_allowed access
This task is preparatory for the migrate_disable() implementation, but
stands on its own and provides a cleanup.
It currently only converts those sites required for task-placement.
Kosaki-san once mentioned replacing cpus_allowed with a proper
cpumask_t instead of the NR_CPUS sized array it currently is, that
would also require something like this.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Link: http://lkml.kernel.org/n/tip-e42skvaddos99psip0vce41o@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
| -rw-r--r-- | kernel/sched.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 7bc9b0e84eb3..45174ca5c8ea 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -2544,11 +2544,11 @@ static int select_fallback_rq(int cpu, struct task_struct *p) /* Look for allowed, online CPU in same node. */ for_each_cpu_and(dest_cpu, nodemask, cpu_active_mask) - if (cpumask_test_cpu(dest_cpu, &p->cpus_allowed)) + if (cpumask_test_cpu(dest_cpu, tsk_cpus_allowed(p))) return dest_cpu; /* Any allowed, online CPU? */ - dest_cpu = cpumask_any_and(&p->cpus_allowed, cpu_active_mask); + dest_cpu = cpumask_any_and(tsk_cpus_allowed(p), cpu_active_mask); if (dest_cpu < nr_cpu_ids) return dest_cpu; @@ -2585,7 +2585,7 @@ int select_task_rq(struct task_struct *p, int sd_flags, int wake_flags) * [ this allows ->select_task() to simply return task_cpu(p) and * not worry about this generic constraint ] */ - if (unlikely(!cpumask_test_cpu(cpu, &p->cpus_allowed) || + if (unlikely(!cpumask_test_cpu(cpu, tsk_cpus_allowed(p)) || !cpu_online(cpu))) cpu = select_fallback_rq(task_cpu(p), p); @@ -6262,7 +6262,7 @@ static int __migrate_task(struct task_struct *p, int src_cpu, int dest_cpu) if (task_cpu(p) != src_cpu) goto done; /* Affinity changed (again). */ - if (!cpumask_test_cpu(dest_cpu, &p->cpus_allowed)) + if (!cpumask_test_cpu(dest_cpu, tsk_cpus_allowed(p))) goto fail; /* |