Messages in this thread Patch in this message | | | Date | Thu, 09 Jun 2011 13:27:52 -0400 | From | Steven Rostedt <> | Subject | [PATCH 08/15] tracing, function: Fix trace header to follow context-info option |
| |
From: Jiri Olsa <jolsa@redhat.com>
The header display of function tracer does not follow the context-info option, so field names are displayed even if this option is off.
Added check for TRACE_ITER_CONTEXT_INFO trace_flags.
With following commands: # echo function > ./current_tracer # echo 0 > options/context-info # cat trace
This is what it looked like before: # tracer: function # # TASK-PID CPU# TIMESTAMP FUNCTION # | | | | | add_preempt_count <-schedule rcu_note_context_switch <-schedule ...
This is what it looks like now: # tracer: function # _raw_spin_unlock_irqrestore <-hrtimer_try_to_cancel ...
Signed-off-by: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1307113131-10045-4-git-send-email-jolsa@redhat.com Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- kernel/trace/trace.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index b926578..3d5e17a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2052,6 +2052,9 @@ void trace_default_header(struct seq_file *m) { struct trace_iterator *iter = m->private; + if (!(trace_flags & TRACE_ITER_CONTEXT_INFO)) + return; + if (iter->iter_flags & TRACE_FILE_LAT_FMT) { /* print nothing if the buffers are empty */ if (trace_empty(iter)) -- 1.7.4.4
| |