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authorLi Zefan <lizf@cn.fujitsu.com>2009-12-08 11:17:29 +0800
committerFrederic Weisbecker <fweisbec@gmail.com>2009-12-13 18:37:28 +0100
commite00bf2ec60605eb95687b7a0c3b83c87c48541dc (patch)
treee0b63423355286bc14cee438b39e9ba681f7327a /kernel
parent8d18eaaff5acaa58369be342c86e607643ce10c7 (diff)
downloadop-kernel-dev-e00bf2ec60605eb95687b7a0c3b83c87c48541dc.zip
op-kernel-dev-e00bf2ec60605eb95687b7a0c3b83c87c48541dc.tar.gz
tracing: Change event->profile_count to be int type
Like total_profile_count, struct ftrace_event_call::profile_count is protected by event_mutex, so it doesn't need to be atomic_t. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Jason Baron <jbaron@redhat.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4B1DC549.5010705@cn.fujitsu.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_event_profile.c6
-rw-r--r--kernel/trace/trace_kprobe.c1
2 files changed, 3 insertions, 4 deletions
diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c
index d9c60f8..9e25573 100644
--- a/kernel/trace/trace_event_profile.c
+++ b/kernel/trace/trace_event_profile.c
@@ -25,7 +25,7 @@ static int ftrace_profile_enable_event(struct ftrace_event_call *event)
char *buf;
int ret = -ENOMEM;
- if (atomic_inc_return(&event->profile_count))
+ if (event->profile_count++ > 0)
return 0;
if (!total_profile_count) {
@@ -56,7 +56,7 @@ fail_buf_nmi:
perf_trace_buf = NULL;
}
fail_buf:
- atomic_dec(&event->profile_count);
+ event->profile_count--;
return ret;
}
@@ -83,7 +83,7 @@ static void ftrace_profile_disable_event(struct ftrace_event_call *event)
{
char *buf, *nmi_buf;
- if (!atomic_add_negative(-1, &event->profile_count))
+ if (--event->profile_count > 0)
return;
event->profile_disable(event);
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index e3c80e9..6ed2234 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1426,7 +1426,6 @@ static int register_probe_event(struct trace_probe *tp)
call->unregfunc = probe_event_disable;
#ifdef CONFIG_EVENT_PROFILE
- atomic_set(&call->profile_count, -1);
call->profile_enable = probe_profile_enable;
call->profile_disable = probe_profile_disable;
#endif
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