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| author | zhangwei(Jovi) <jovi.zhangwei@huawei.com> | 2013-03-11 08:14:03 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-03-15 18:22:10 +0100 |
| commit | 52f6ad6dc3f4c6de598fe7cc9b629888d624aa52 (patch) | |
| tree | ae3d4edf8b44bf9e77e970e58411420e6e164b60 /kernel/trace/trace_output.c | |
| parent | tracing: Fix comment about prefix in arch_syscall_match_sym_name() (diff) | |
| download | linux-52f6ad6dc3f4c6de598fe7cc9b629888d624aa52.tar.xz linux-52f6ad6dc3f4c6de598fe7cc9b629888d624aa52.zip | |
tracing: Rename trace_event_mutex to trace_event_sem
trace_event_mutex is an rw semaphore now, not a mutex, change the name.
Link: http://lkml.kernel.org/r/513D843B.40109@huawei.com
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
[ Forward ported to my new code ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_output.c')
| -rw-r--r-- | kernel/trace/trace_output.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 19f48e7edc39..f475b2a7ac88 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -14,7 +14,7 @@ /* must be a power of 2 */ #define EVENT_HASHSIZE 128 -DECLARE_RWSEM(trace_event_mutex); +DECLARE_RWSEM(trace_event_sem); static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly; @@ -826,12 +826,12 @@ static int trace_search_list(struct list_head **list) void trace_event_read_lock(void) { - down_read(&trace_event_mutex); + down_read(&trace_event_sem); } void trace_event_read_unlock(void) { - up_read(&trace_event_mutex); + up_read(&trace_event_sem); } /** @@ -854,7 +854,7 @@ int register_ftrace_event(struct trace_event *event) unsigned key; int ret = 0; - down_write(&trace_event_mutex); + down_write(&trace_event_sem); if (WARN_ON(!event)) goto out; @@ -909,14 +909,14 @@ int register_ftrace_event(struct trace_event *event) ret = event->type; out: - up_write(&trace_event_mutex); + up_write(&trace_event_sem); return ret; } EXPORT_SYMBOL_GPL(register_ftrace_event); /* - * Used by module code with the trace_event_mutex held for write. + * Used by module code with the trace_event_sem held for write. */ int __unregister_ftrace_event(struct trace_event *event) { @@ -931,9 +931,9 @@ int __unregister_ftrace_event(struct trace_event *event) */ int unregister_ftrace_event(struct trace_event *event) { - down_write(&trace_event_mutex); + down_write(&trace_event_sem); __unregister_ftrace_event(event); - up_write(&trace_event_mutex); + up_write(&trace_event_sem); return 0; } |