[for-next][PATCH 13/17] tracing: Add per_cpu directory into tracing instances

From: Steven Rostedt
Date: Thu Mar 07 2013 - 22:11:16 EST


From: "Steven Rostedt (Red Hat)" <srostedt@xxxxxxxxxx>

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@xxxxxxxxxxx>
---
kernel/trace/trace.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 163743a..e6547ea 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -5470,6 +5470,7 @@ 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);
@@ -5502,12 +5503,15 @@ 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();

@@ -5547,9 +5551,6 @@ 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;
}

--
1.7.10.4


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