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linux/kernel
Jiri Olsa 749230b06a tracing, function_graph: Add context-info support for function_graph tracer
The function_graph tracer does not follow global context-info option.
Adding TRACE_ITER_CONTEXT_INFO trace_flags check to enable it.

With following commands:
	# echo function_graph > ./current_tracer
	# echo 0 > options/context-info
	# cat trace

This is what it looked like before:
# tracer: function_graph
#
#     TIME        CPU  DURATION                  FUNCTION CALLS
#      |          |     |   |                     |   |   |   |
 1)   0.079 us    |          } /* __vma_link_rb */
 1)   0.056 us    |          copy_page_range();
 1)               |          security_vm_enough_memory() {
...

This is what it looks like now:
# tracer: function_graph
#
  } /* update_ts_time_stats */
  timekeeping_max_deferment();
...

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1307113131-10045-6-git-send-email-jolsa@redhat.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-06-14 22:48:49 -04:00
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