Commit 7425664b authored Jan 10, 2018 by Jin Yao Committed by Arnaldo Carvalho de Melo Jan 17, 2018

perf report: Add an indication of what time slices are used



Add a time slices indication to the perf report header.

For example,

  # perf report --stdio --time 10%

  # Total Lost Samples: 0
  #
  # Samples: 9K of event 'cycles:ppp' (time slices: 10%)
  # Event count (approx.): 8951288803

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Suggested--by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1515596433-24653-6-git-send-email-yao.jin@linux.intel.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 3002812e

tools/perf/builtin-report.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -404,6 +404,9 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
		if (evname != NULL)
		ret += fprintf(fp, " of event '%s'", evname);

		if (rep->time_str)
		ret += fprintf(fp, " (time slices: %s)", rep->time_str);

		if (symbol_conf.show_ref_callgraph &&
		strstr(evname, "call-graph=no")) {
		ret += fprintf(fp, ", show reference callgraph");

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