Messages in this thread Patch in this message | | | Date | Tue, 1 Oct 2019 09:19:21 +0200 | From | Peter Zijlstra <> | Subject | Re: [GIT PULL] scheduler fixes |
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On Mon, Sep 30, 2019 at 04:45:49PM -0700, John Stultz wrote: > Reverting the following patches:
> "sched/membarrier: Fix p->mm->membarrier_state racy load"
ARGH, I fudged it... please try:
diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index a39bed2c784f..168479a7d61b 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -174,7 +174,6 @@ static int membarrier_private_expedited(int flags) */ if (cpu == raw_smp_processor_id()) continue; - rcu_read_lock(); p = rcu_dereference(cpu_rq(cpu)->curr); if (p && p->mm == mm) __cpumask_set_cpu(cpu, tmpmask);
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