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>

2 files changed, 3 insertions, 4 deletions

diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c
index d9c60f80aa0d..9e25573242cf 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 e3c80e925896..6ed223447a3f 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