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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-24 10:46:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-24 10:46:55 -0700 |
| commit | 17fdfd0851617b6c18c0913364caf2a54171ce85 (patch) | |
| tree | e2c2859f18604e6e1d5406eb08bf2451019be848 | |
| parent | a8432588fc1e406e800e8bf88bebf4cd390b7f46 (diff) | |
| parent | 6ed0106667d76589cb648c27edb4f4ffbf9d59ca (diff) | |
Merge tag 'trace-fixes-v3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"Masami Hiramatsu fixed another bug. This time returning a proper
result in event_enable_func(). After checking the return status of
try_module_get(), it returned the status of try_module_get().
But try_module_get() returns 0 on failure, which is success for
event_enable_func()"
* tag 'trace-fixes-v3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Return -EBUSY when event_enable_func() fails to get module
| -rw-r--r-- | kernel/trace/trace_events.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 7a0cf68027cc..27963e2bf4bf 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -2072,8 +2072,10 @@ event_enable_func(struct ftrace_hash *hash, out_reg: /* Don't let event modules unload while probe registered */ ret = try_module_get(file->event_call->mod); - if (!ret) + if (!ret) { + ret = -EBUSY; goto out_free; + } ret = __ftrace_event_enable_disable(file, 1, 1); if (ret < 0) |