linux-kernel - [PATCH 22/26] perf auxtrace: Fix period type 'i' not working

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Message-Id: <1438912715-4000-23-git-send-email-acme@kernel.org>
Date:	Thu,  6 Aug 2015 22:58:31 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Adrian Hunter <adrian.hunter@...el.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 22/26] perf auxtrace: Fix period type 'i' not working

From: Adrian Hunter <adrian.hunter@...el.com>

PERF_ITRACE_PERIOD_INSTRUCTIONS is zero so it got overwritten by the
default period type.

Fix by checking if the period type was set rather than if the value was
zero when applying the default.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Link: http://lkml.kernel.org/r/1437150840-31811-12-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/auxtrace.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index 83d9dd96fe08..a25b3609cef8 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -942,6 +942,7 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
 	struct itrace_synth_opts *synth_opts = opt->value;
 	const char *p;
 	char *endptr;
+	bool period_type_set = false;
 
 	synth_opts->set = true;
 
@@ -970,10 +971,12 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
 				case 'i':
 					synth_opts->period_type =
 						PERF_ITRACE_PERIOD_INSTRUCTIONS;
+					period_type_set = true;
 					break;
 				case 't':
 					synth_opts->period_type =
 						PERF_ITRACE_PERIOD_TICKS;
+					period_type_set = true;
 					break;
 				case 'm':
 					synth_opts->period *= 1000;
@@ -986,6 +989,7 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
 						goto out_err;
 					synth_opts->period_type =
 						PERF_ITRACE_PERIOD_NANOSECS;
+					period_type_set = true;
 					break;
 				case '\0':
 					goto out;
@@ -1039,7 +1043,7 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str,
 	}
 out:
 	if (synth_opts->instructions) {
-		if (!synth_opts->period_type)
+		if (!period_type_set)
 			synth_opts->period_type =
 					PERF_ITRACE_DEFAULT_PERIOD_TYPE;
 		if (!synth_opts->period)
-- 
2.1.0

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