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Diffstat (limited to 'kernel/trace/trace_syscalls.c')
-rw-r--r--kernel/trace/trace_syscalls.c10
1 files changed, 0 insertions, 10 deletions
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index e4b6d11bdf78..ea90eb5f6f17 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -431,11 +431,6 @@ static void unreg_event_syscall_enter(struct ftrace_event_file *file,
431 if (!tr->sys_refcount_enter) 431 if (!tr->sys_refcount_enter)
432 unregister_trace_sys_enter(ftrace_syscall_enter, tr); 432 unregister_trace_sys_enter(ftrace_syscall_enter, tr);
433 mutex_unlock(&syscall_trace_lock); 433 mutex_unlock(&syscall_trace_lock);
434 /*
435 * Callers expect the event to be completely disabled on
436 * return, so wait for current handlers to finish.
437 */
438 synchronize_sched();
439} 434}
440 435
441static int reg_event_syscall_exit(struct ftrace_event_file *file, 436static int reg_event_syscall_exit(struct ftrace_event_file *file,
@@ -474,11 +469,6 @@ static void unreg_event_syscall_exit(struct ftrace_event_file *file,
474 if (!tr->sys_refcount_exit) 469 if (!tr->sys_refcount_exit)
475 unregister_trace_sys_exit(ftrace_syscall_exit, tr); 470 unregister_trace_sys_exit(ftrace_syscall_exit, tr);
476 mutex_unlock(&syscall_trace_lock); 471 mutex_unlock(&syscall_trace_lock);
477 /*
478 * Callers expect the event to be completely disabled on
479 * return, so wait for current handlers to finish.
480 */
481 synchronize_sched();
482} 472}
483 473
484static int __init init_syscall_trace(struct ftrace_event_call *call) 474static int __init init_syscall_trace(struct ftrace_event_call *call)