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From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	David Ahern <dsahern@gmail.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH 2/2] perf stat: Fix --interval_clear option
Date: Mon,  2 Jul 2018 15:42:02 +0200
Message-ID: <20180702134202.17745-2-jolsa@kernel.org> (raw)
In-Reply-To: <20180702134202.17745-1-jolsa@kernel.org>

Currently we display extra header line, like:

  # perf stat -I 1000 -a --interval-clear
  #           time             counts unit events
         insn per cycle branch-misses of all branches
       2.964917103        3855.349912      cpu-clock (msec)          #    3.855 CPUs utilized
       2.964917103             23,993      context-switches          #    0.006 M/sec
       2.964917103              1,301      cpu-migrations            #    0.329 K/sec
       ...

Fixing the condition and getting proper:

  # perf stat -I 1000 -a --interval-clear
  #           time             counts unit events
       2.359048938        1432.492228      cpu-clock (msec)          #    1.432 CPUs utilized
       2.359048938              7,613      context-switches          #    0.002 M/sec
       2.359048938                419      cpu-migrations            #    0.133 K/sec
       ...

Fixes: 9660e08ee8cb ("perf stat: Add --interval-clear option")
Link: http://lkml.kernel.org/n/tip-cws96nsw02q7vmxqwgofc5ou@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/builtin-stat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 22547a490e1f..05be023c3f0e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1742,7 +1742,7 @@ static void print_interval(char *prefix, struct timespec *ts)
 		}
 	}
 
-	if ((num_print_interval == 0 && metric_only) || interval_clear)
+	if ((num_print_interval == 0 || interval_clear) && metric_only)
 		print_metric_headers(" ", true);
 	if (++num_print_interval == 25)
 		num_print_interval = 0;
-- 
2.17.1


  reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-02 13:42 [PATCH 1/2] perf tools: Fix compilation errors on gcc8 Jiri Olsa
2018-07-02 13:42 ` Jiri Olsa [this message]
2018-07-12 14:03   ` [tip:perf/urgent] perf stat: Fix --interval_clear option tip-bot for Jiri Olsa
2018-07-12 14:02 ` [tip:perf/urgent] perf tools: Fix compilation errors on gcc8 tip-bot for Jiri Olsa

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