From 917bdd1c9b7b0f4c22f2504c2f0c1074c8ab9df7 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 17 Sep 2010 11:28:49 +0200 Subject: [PATCH] perf: Fix perf_event_exit_cpu_context() Use the right cpu-context.. spotted by preempt warning on hot-unplug Signed-off-by: Peter Zijlstra Cc: Stephane Eranian Cc: Robert Richter LKML-Reference: <20100917093009.461794357@chello.nl> Signed-off-by: Ingo Molnar --- kernel/perf_event.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 6d7eef5f3c41..27332e5f51a7 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -6269,14 +6269,13 @@ static void perf_event_exit_cpu_context(int cpu) idx = srcu_read_lock(&pmus_srcu); list_for_each_entry_rcu(pmu, &pmus, entry) { - ctx = &this_cpu_ptr(pmu->pmu_cpu_context)->ctx; + ctx = &per_cpu_ptr(pmu->pmu_cpu_context, cpu)->ctx; mutex_lock(&ctx->mutex); smp_call_function_single(cpu, __perf_event_exit_context, ctx, 1); mutex_unlock(&ctx->mutex); } srcu_read_unlock(&pmus_srcu, idx); - } static void perf_event_exit_cpu(int cpu) -- 2.20.1