linux-kernel - [PATCH 10/10] perf, tools, record: Always allow to overide default period v2

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Date:	Wed, 16 Apr 2014 11:49:32 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	jolsa@...hat.com
Cc:	acme@...radead.org, linux-kernel@...r.kernel.org,
	namhyung@...nel.org, Andi Kleen <ak@...ux.intel.com>,
	fweisbec@...il.com
Subject: [PATCH 10/10] perf, tools, record: Always allow to overide default period v2

From: Andi Kleen <ak@...ux.intel.com>

Fix the logic to allow overriding event default periods with -c or -F
on the command line.  I'm not sure I understand this if() fully, but
this change makes all cases I tested work (tracepoint with default, default,
,-c, -F)

This fixed specifying -c / -F with json event list events,
which have a default period. It should do the same
for trace point events.

Cc: fweisbec@...il.com
v2: Simplify, just change || to &&
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/util/evsel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 5c28d82..d9ceede 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -592,7 +592,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
 	 * We default some events to a 1 default interval. But keep
 	 * it a weak assumption overridable by the user.
 	 */
-	if (!attr->sample_period || (opts->user_freq != UINT_MAX &&
+	if (!attr->sample_period && (opts->user_freq != UINT_MAX &&
 				     opts->user_interval != ULLONG_MAX)) {
 		if (opts->freq) {
 			perf_evsel__set_sample_bit(evsel, PERIOD);
-- 
1.8.5.3

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