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perf stat: Fix CVS output format for non-supported counters

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When printing stats in CSV mode, 'perf stat' appends extra separators
when a counter is not supported:

<not supported>,,L1-dcache-store-misses,mesos/bd442f34-2b4a-47df-b966-9b281f9f56fc,0,100.00,,,,

Which causes a failure when parsing fields. The numbers of separators
should be the same for each line, no matter if the counter is or not
supported.

Signed-off-by: Ilya Pronin <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Andi Kleen <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 92a61f6412 ("perf stat: Implement CSV metrics output")
Signed-off-by: Cong Wang <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Ilya Pronin 2018-03-05 22:43:53 -08:00 • committed by Arnaldo Carvalho de Melo
commit 40c21898ba
1 changed files with 1 additions and 1 deletions
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2
tools/perf/builtin-stat.c
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@ -917,7 +917,7 @@ static void print_metric_csv(void *ctx,
char buf[64], *vals, *ends;
if (unit == NULL || fmt == NULL) {
fprintf(out, "%s%s%s%s", csv_sep, csv_sep, csv_sep, csv_sep);
fprintf(out, "%s%s", csv_sep, csv_sep);
return;
}
snprintf(buf, sizeof(buf), fmt, val);