From: Steven Rostedt (Red Hat) <srostedt@redhat.com>
Date: Wed, 6 Mar 2013 02:52:25 +0000 (-0500)
Subject: tracing: Add per_cpu directory into tracing instances
X-Git-Tag: firefly_0821_release~3680^2~671^2~48
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=121aaee7b0a82605d33af200c7e9ebab6fd6e444;p=firefly-linux-kernel-4.4.55.git

tracing: Add per_cpu directory into tracing instances

Add the per_cpu directory to the created tracing instances:

  cd /sys/kernel/debug/tracing/instances
  mkdir foo
  ls foo/per_cpu/cpu0
buffer_size_kb	snapshot_raw  trace	  trace_pipe_raw
snapshot	stats	      trace_pipe

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 17671bc9a4b1..c547ebbe36ff 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5506,6 +5506,7 @@ static __init void create_trace_instances(struct dentry *d_tracer)
 static void
 init_tracer_debugfs(struct trace_array *tr, struct dentry *d_tracer)
 {
+	int cpu;
 
 	trace_create_file("trace_options", 0644, d_tracer,
 			  tr, &tracing_iter_fops);
@@ -5538,12 +5539,15 @@ init_tracer_debugfs(struct trace_array *tr, struct dentry *d_tracer)
 	trace_create_file("snapshot", 0644, d_tracer,
 			  (void *)&tr->trace_cpu, &snapshot_fops);
 #endif
+
+	for_each_tracing_cpu(cpu)
+		tracing_init_debugfs_percpu(tr, cpu);
+
 }
 
 static __init int tracer_init_debugfs(void)
 {
 	struct dentry *d_tracer;
-	int cpu;
 
 	trace_access_lock_init();
 
@@ -5583,9 +5587,6 @@ static __init int tracer_init_debugfs(void)
 
 	create_trace_options_dir(&global_trace);
 
-	for_each_tracing_cpu(cpu)
-		tracing_init_debugfs_percpu(&global_trace, cpu);
-
 	return 0;
 }