diff options
| author | Borislav Petkov <bp@amd64.org> | 2012-03-29 19:11:40 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-06-14 21:22:12 +0200 |
| commit | 8d240dd88cca33b704adf3fe281aa64b5aac2dd8 (patch) | |
| tree | ed9431274d1274e134207edb5604669bbf638b73 /kernel/trace | |
| parent | perf/x86: Convert obsolete simple_strtoul() usage to kstrtoul() (diff) | |
| download | linux-8d240dd88cca33b704adf3fe281aa64b5aac2dd8.tar.xz linux-8d240dd88cca33b704adf3fe281aa64b5aac2dd8.zip | |
ftrace: Remove a superfluous check
register_ftrace_function() checks ftrace_disabled and calls
__register_ftrace_function which does it again.
Drop the first check and add the unlikely hint to the second one. Also,
drop the label as John correctly notices.
No functional change.
Link: http://lkml.kernel.org/r/20120329171140.GE6409@aftab
Cc: Borislav Petkov <bp@amd64.org>
Cc: John Kacur <jkacur@redhat.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/ftrace.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index a008663d86c8..b4f20fba09fc 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -312,7 +312,7 @@ static int remove_ftrace_list_ops(struct ftrace_ops **list, static int __register_ftrace_function(struct ftrace_ops *ops) { - if (ftrace_disabled) + if (unlikely(ftrace_disabled)) return -ENODEV; if (FTRACE_WARN_ON(ops == &global_ops)) @@ -4299,16 +4299,12 @@ int register_ftrace_function(struct ftrace_ops *ops) mutex_lock(&ftrace_lock); - if (unlikely(ftrace_disabled)) - goto out_unlock; - ret = __register_ftrace_function(ops); if (!ret) ret = ftrace_startup(ops, 0); - - out_unlock: mutex_unlock(&ftrace_lock); + return ret; } EXPORT_SYMBOL_GPL(register_ftrace_function); |