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-rw-r--r--arch/x86/kernel/cpu/perf_event.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index c6bde7d..5fb490c 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -811,7 +811,6 @@ void hw_perf_enable(void)
* step2: reprogram moved events into new counters
*/
for (i = 0; i < n_running; i++) {
-
event = cpuc->event_list[i];
hwc = &event->hw;
@@ -826,21 +825,16 @@ void hw_perf_enable(void)
continue;
x86_pmu_stop(event);
-
- hwc->idx = -1;
}
for (i = 0; i < cpuc->n_events; i++) {
-
event = cpuc->event_list[i];
hwc = &event->hw;
- if (i < n_running &&
- match_prev_assignment(hwc, cpuc, i))
- continue;
-
- if (hwc->idx == -1)
+ if (!match_prev_assignment(hwc, cpuc, i))
x86_assign_hw_event(event, cpuc, i);
+ else if (i < n_running)
+ continue;
x86_pmu_start(event);
}