diff options
Diffstat (limited to 'kernel/events/hw_breakpoint.c')
-rw-r--r-- | kernel/events/hw_breakpoint.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c index bb38c4d3ee12..9a7b487c6fe2 100644 --- a/kernel/events/hw_breakpoint.c +++ b/kernel/events/hw_breakpoint.c | |||
@@ -453,7 +453,16 @@ int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *att | |||
453 | int old_type = bp->attr.bp_type; | 453 | int old_type = bp->attr.bp_type; |
454 | int err = 0; | 454 | int err = 0; |
455 | 455 | ||
456 | perf_event_disable(bp); | 456 | /* |
457 | * modify_user_hw_breakpoint can be invoked with IRQs disabled and hence it | ||
458 | * will not be possible to raise IPIs that invoke __perf_event_disable. | ||
459 | * So call the function directly after making sure we are targeting the | ||
460 | * current task. | ||
461 | */ | ||
462 | if (irqs_disabled() && bp->ctx && bp->ctx->task == current) | ||
463 | __perf_event_disable(bp); | ||
464 | else | ||
465 | perf_event_disable(bp); | ||
457 | 466 | ||
458 | bp->attr.bp_addr = attr->bp_addr; | 467 | bp->attr.bp_addr = attr->bp_addr; |
459 | bp->attr.bp_type = attr->bp_type; | 468 | bp->attr.bp_type = attr->bp_type; |