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Message-Id: <20230308225912.1960990-8-irogers@google.com>
Date: Wed, 8 Mar 2023 14:59:08 -0800
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Adrian Hunter <adrian.hunter@...el.com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Kan Liang <kan.liang@...ux.intel.com>,
Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
Ravi Bangoria <ravi.bangoria@....com>,
"Steinar H. Gunderson" <sesse@...gle.com>,
Kim Phillips <kim.phillips@....com>,
Florian Fischer <florian.fischer@...q.space>,
James Clark <james.clark@....com>,
Suzuki Poulouse <suzuki.poulose@....com>,
Sean Christopherson <seanjc@...gle.com>,
Leo Yan <leo.yan@...aro.org>,
John Garry <john.g.garry@...cle.com>,
Kajol Jain <kjain@...ux.ibm.com>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Stephane Eranian <eranian@...gle.com>,
Ian Rogers <irogers@...gle.com>
Subject: [PATCH v4 07/11] perf parse-events: Pass ownership of the group name
Pass ownership of the group name rather than copying and freeing the
original. This saves a memory allocation and copy.
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/util/parse-events.c | 3 ++-
tools/perf/util/parse-events.y | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 0336ff27c15f..1be454697d57 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1761,6 +1761,7 @@ parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
handled:
ret = 1;
+ free(name);
out:
free(leaders);
return ret;
@@ -1786,7 +1787,7 @@ void parse_events__set_leader(char *name, struct list_head *list,
leader = arch_evlist__leader(list);
__perf_evlist__set_leader(list, &leader->core);
- leader->group_name = name ? strdup(name) : NULL;
+ leader->group_name = name;
list_move(&leader->core.node, list);
}
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index be8c51770051..541b8dde2063 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -202,8 +202,8 @@ PE_NAME '{' events '}'
struct list_head *list = $3;
inc_group_count(list, _parse_state);
+ /* Takes ownership of $1. */
parse_events__set_leader($1, list, _parse_state);
- free($1);
$$ = list;
}
|
--
2.40.0.rc0.216.gc4246ad0f0-goog
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