tracing: Add per_cpu directory into tracing instances (121aaee7) · Commits · 戴 / test

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>

kernel/trace/trace.c

+5 −4

Original line number	Diff line number	Diff line
		@@ -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;
		}

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