[tip:perfcounters/core] perf report: Print out the total number of events

[tip-bot for Ingo Molnar]

Commit-ID:  05ca061eb9704ad9b0739f88046276792b75f2c1
Gitweb:     http://git.kernel.org/tip/05ca061eb9704ad9b0739f88046276792b75f2c1
Author:     Ingo Molnar <mingo@xxxxxxx>
AuthorDate: Thu, 4 Jun 2009 14:21:16 +0200
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Thu, 4 Jun 2009 14:21:16 +0200

perf report: Print out the total number of events

So that the statistical quality of the profile can be estimated at a glance.

Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>


---
 Documentation/perf_counter/builtin-report.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 15fe9da..be392e0 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -722,6 +722,8 @@ static size_t output__fprintf(FILE *fp, uint64_t total_samples)
 	size_t ret = 0;
 
 	fprintf(fp, "#\n");
+	fprintf(fp, "# (%Ld profiler events)\n", (__u64)total_samples);
+	fprintf(fp, "#\n");
 
 	fprintf(fp, "# Overhead");
 	list_for_each_entry(se, &hist_entry__sort_list, list)
--
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