diff options
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 954c36e28101..ba5bd6a78fe7 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4729,7 +4729,7 @@ static void perf_remove_from_owner(struct perf_event *event); static void perf_event_exit_event(struct perf_event *event, struct perf_event_context *ctx, struct task_struct *task, - bool revoke); + unsigned long detach_flags); /* * Removes all events from the current task that have been marked @@ -4756,7 +4756,7 @@ static void perf_event_remove_on_exec(struct perf_event_context *ctx) modified = true; - perf_event_exit_event(event, ctx, ctx->task, false); + perf_event_exit_event(event, ctx, ctx->task, DETACH_GROUP); } raw_spin_lock_irqsave(&ctx->lock, flags); @@ -7150,6 +7150,8 @@ static int map_range(struct perf_buffer *rb, struct vm_area_struct *vma) int err = 0; unsigned long pagenum; + guard(mutex)(&rb->aux_mutex); + /* * We map this as a VM_PFNMAP VMA. * @@ -12937,7 +12939,7 @@ static void __pmu_detach_event(struct pmu *pmu, struct perf_event *event, /* * De-schedule the event and mark it REVOKED. */ - perf_event_exit_event(event, ctx, ctx->task, true); + perf_event_exit_event(event, ctx, ctx->task, DETACH_REVOKE); /* * All _free_event() bits that rely on event->pmu: @@ -14525,12 +14527,13 @@ static void perf_event_exit_event(struct perf_event *event, struct perf_event_context *ctx, struct task_struct *task, - bool revoke) + unsigned long detach_flags) { struct perf_event *parent_event = event->parent; - unsigned long detach_flags = DETACH_EXIT; unsigned int attach_state; + detach_flags |= DETACH_EXIT; + if (parent_event) { /* * Do not destroy the 'original' grouping; because of the @@ -14553,8 +14556,8 @@ perf_event_exit_event(struct perf_event *event, sync_child_event(event, task); } - if (revoke) - detach_flags |= DETACH_GROUP | DETACH_REVOKE; + if (detach_flags & DETACH_REVOKE) + detach_flags |= DETACH_GROUP; perf_remove_from_context(event, detach_flags); /* @@ -14642,7 +14645,7 @@ static void perf_event_exit_task_context(struct task_struct *task, bool exit) perf_event_task(task, ctx, 0); list_for_each_entry_safe(child_event, next, &ctx->event_list, event_entry) - perf_event_exit_event(child_event, ctx, exit ? task : NULL, false); + perf_event_exit_event(child_event, ctx, exit ? task : NULL, 0); mutex_unlock(&ctx->mutex); |