1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 045cc0bb4c17..1d665a0b202c 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -835,6 +835,10 @@ void hw_perf_enable(void)
                         event = cpuc->event_list[i];
                         hwc = &event->hw;
 
+                        if (i < n_running &&
+                            match_prev_assignment(hwc, cpuc, i))
+                                continue;
+
                         if (hwc->idx == -1)
                                 x86_assign_hw_event(event, cpuc, i);