From: Steven Rostedt Date: Tue, 10 Mar 2009 16:04:02 +0000 (-0400) Subject: tracing: add back the available_events file X-Git-Tag: firefly_0821_release~13991^2~242^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2314c4ae1461c9e8b26cf8b9a851f280bc5769e1;p=firefly-linux-kernel-4.4.55.git tracing: add back the available_events file The event directory files type and available_types were no longer needed with the new TRACE_EVENT_FORMAT macros, they were deleted. But by accident the available_events file was also removed. This patch brings it back. Reported-by: KOSAKI Motohiro Signed-off-by: Steven Rostedt --- diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 85ec10fbb38d..769dfd00fc85 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -428,6 +428,13 @@ static const struct seq_operations show_set_event_seq_ops = { .stop = t_stop, }; +static const struct file_operations ftrace_avail_fops = { + .open = ftrace_event_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + static const struct file_operations ftrace_set_event_fops = { .open = ftrace_event_seq_open, .read = seq_read, @@ -569,6 +576,13 @@ static __init int event_trace_init(void) if (!d_tracer) return 0; + entry = debugfs_create_file("available_events", 0444, d_tracer, + (void *)&show_event_seq_ops, + &ftrace_avail_fops); + if (!entry) + pr_warning("Could not create debugfs " + "'available_events' entry\n"); + entry = debugfs_create_file("set_event", 0644, d_tracer, (void *)&show_set_event_seq_ops, &ftrace_set_event_fops);