This is a note to let you know that I've just added the patch titled

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

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: perf-stat-fix-cvs-output-format-for-non-supported-counters.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 40c21898ba5372c14ef71717040529794a91ccc2 Mon Sep 17 00:00:00 2001

From: Ilya Pronin ipronin@twitter.com Date: Mon, 5 Mar 2018 22:43:53 -0800 Subject: perf stat: Fix CVS output format for non-supported counters

From: Ilya Pronin ipronin@twitter.com

commit 40c21898ba5372c14ef71717040529794a91ccc2 upstream.

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 ipronin@twitter.com Acked-by: Jiri Olsa jolsa@redhat.com Cc: Andi Kleen ak@linux.intel.com Link: http://lkml.kernel.org/r/20180306064353.31930-1-xiyou.wangcong@gmail.com Fixes: 92a61f6412d3 ("perf stat: Implement CSV metrics output") Signed-off-by: Cong Wang xiyou.wangcong@gmail.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/perf/builtin-stat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -967,7 +967,7 @@ 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);

Patches currently in stable-queue which might be from ipronin@twitter.com are

queue-4.15/perf-stat-fix-cvs-output-format-for-non-supported-counters.patch