perf: Fix CPU hotplug

Since we have UP_PREPARE, we should also have UP_CANCELED.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus <paulus@samba.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 657555a5f30fc9399513e9538a205d2e8bf0fff0..db5b56064687e453c0df1cc118b975ea047bdcae 100644 (file)
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -5761,15 +5761,15 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
 {
        unsigned int cpu = (long)hcpu;
 
-       switch (action) {
+       switch (action & ~CPU_TASKS_FROZEN) {
 
        case CPU_UP_PREPARE:
-       case CPU_UP_PREPARE_FROZEN:
+       case CPU_DOWN_FAILED:
                perf_event_init_cpu(cpu);
                break;
 
+       case CPU_UP_CANCELED:
        case CPU_DOWN_PREPARE:
-       case CPU_DOWN_PREPARE_FROZEN:
                perf_event_exit_cpu(cpu);
                break;