trace: Call tracing_reset_online_cpus before tracer->init()
Impact: cleanup
To make it easy for ftrace plugin writers, as this was open coded in
the existing plugins
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Frédéric Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index eaca5ad..84ca9d8 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -226,15 +226,6 @@
stop_stack_timer(cpu);
}
-static void start_stack_trace(struct trace_array *tr)
-{
- mutex_lock(&sample_timer_lock);
- tracing_reset_online_cpus(tr);
- start_stack_timers();
- tracer_enabled = 1;
- mutex_unlock(&sample_timer_lock);
-}
-
static void stop_stack_trace(struct trace_array *tr)
{
mutex_lock(&sample_timer_lock);
@@ -247,7 +238,10 @@
{
sysprof_trace = tr;
- start_stack_trace(tr);
+ mutex_lock(&sample_timer_lock);
+ start_stack_timers();
+ tracer_enabled = 1;
+ mutex_unlock(&sample_timer_lock);
return 0;
}