diff options
Diffstat (limited to 'kernel/trace/trace_syscalls.c')
-rw-r--r-- | kernel/trace/trace_syscalls.c | 10 |
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 | ||
441 | static int reg_event_syscall_exit(struct ftrace_event_file *file, | 436 | static 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 | ||
484 | static int __init init_syscall_trace(struct ftrace_event_call *call) | 474 | static int __init init_syscall_trace(struct ftrace_event_call *call) |