tracing/kprobes: Avoid self tests if tracing is disabled on boot up

If tracing is disabled on boot up, the kernel should not execute tracing
self tests. The kernel should check whether tracing is disabled or not
before executing any of the tracing self tests.

Link: http://lkml.kernel.org/p/20140605223520.32311.56097.stgit@yunodevel

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Yoshihiro YUNOMAE 2014-06-06 07:35:20 +09:00 committed by Steven Rostedt
parent dc81e5e3ab
commit 748ec3a20e
1 changed files with 3 additions and 0 deletions

View File

@ -1377,6 +1377,9 @@ static __init int kprobe_trace_self_tests_init(void)
struct trace_kprobe *tk;
struct ftrace_event_file *file;
if (tracing_is_disabled())
return -ENODEV;
target = kprobe_trace_selftest_target;
pr_info("Testing kprobe tracing: ");