linux-kernel - [PATCH v1 1/6] perf annotate: Delete session for debug builds

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Date:   Tue, 28 Mar 2023 16:55:38 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, James Clark <james.clark@....com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        German Gomez <german.gomez@....com>,
        Sandipan Das <sandipan.das@....com>,
        Andres Freund <andres@...razel.de>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: [PATCH v1 1/6] perf annotate: Delete session for debug builds

Use the debug build indicator as the guide to free the session. This
implements a behavior described in a comment, which is consequentially
removed.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/builtin-annotate.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 4750fac7bf93..98d1b6379230 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -692,16 +692,12 @@ int cmd_annotate(int argc, const char **argv)
 
 out_delete:
 	/*
-	 * Speed up the exit process, for large files this can
-	 * take quite a while.
-	 *
-	 * XXX Enable this when using valgrind or if we ever
-	 * librarize this command.
-	 *
-	 * Also experiment with obstacks to see how much speed
-	 * up we'll get here.
-	 *
-	 * perf_session__delete(session);
+	 * Speed up the exit process by only deleting for debug builds. For
+	 * large files this can save time.
 	 */
+#ifndef NDEBUG
+	perf_session__delete(annotate.session);
+#endif
+
 	return ret;
 }
-- 
2.40.0.348.gf938b09366-goog