diff options
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 19ae6c931c52..55d18791a72d 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -1327,7 +1327,7 @@ static void put_ctx(struct perf_event_context *ctx) * function. * * Lock order: - * exec_update_mutex + * exec_update_lock * task_struct::perf_event_mutex * perf_event_context::mutex * perf_event::child_mutex; @@ -11959,14 +11959,14 @@ SYSCALL_DEFINE5(perf_event_open, } if (task) { - err = mutex_lock_interruptible(&task->signal->exec_update_mutex); + err = down_read_interruptible(&task->signal->exec_update_lock); if (err) goto err_file; /* * Preserve ptrace permission check for backwards compatibility. * - * We must hold exec_update_mutex across this and any potential + * We must hold exec_update_lock across this and any potential * perf_install_in_context() call for this new event to * serialize against exec() altering our credentials (and the * perf_event_exit_task() that could imply). @@ -12129,7 +12129,7 @@ SYSCALL_DEFINE5(perf_event_open, mutex_unlock(&ctx->mutex); if (task) { - mutex_unlock(&task->signal->exec_update_mutex); + up_read(&task->signal->exec_update_lock); put_task_struct(task); } @@ -12153,7 +12153,7 @@ err_locked: mutex_unlock(&ctx->mutex); err_cred: if (task) - mutex_unlock(&task->signal->exec_update_mutex); + up_read(&task->signal->exec_update_lock); err_file: fput(event_file); err_context: @@ -12470,7 +12470,7 @@ static void perf_event_exit_task_context(struct task_struct *child, int ctxn) /* * When a child task exits, feed back event values to parent events. * - * Can be called with exec_update_mutex held when called from + * Can be called with exec_update_lock held when called from * setup_new_exec(). */ void perf_event_exit_task(struct task_struct *child) |