From nobody Wed Sep 10 05:38:30 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25EECC74A4B for ; Sun, 12 Mar 2023 02:17:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230027AbjCLCRb (ORCPT ); Sat, 11 Mar 2023 21:17:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229914AbjCLCRY (ORCPT ); Sat, 11 Mar 2023 21:17:24 -0500 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43A214E5FD for ; Sat, 11 Mar 2023 18:16:53 -0800 (PST) Received: by mail-pl1-x649.google.com with SMTP id q1-20020a170902dac100b0019f1e3ea83dso1949182plx.4 for ; Sat, 11 Mar 2023 18:16:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1678587409; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=rAHr1Ym6m8HDaHWKquUTUVzIVoHfjpMPERLVKzK3KKk=; b=c6h0GsVHgKGDH1bcn7dxWPUgQfME7wApLuocb4Vg1jAr0QTtoPc8e9f0zRcXnzmDDZ xy7Oum6JHYQGP16fOo9sgIa+V6zKtAWjoU8HFlTqpKye6XjeqWwSaRK/3VqzagDG4/wb u4Udxv4YQorgEuOfWfTvH3ymWelcv44KtfMGAAvfqO3NLdFPRNQKHUCdpBFnVkdUAHsQ N7N8OPs6ZvFYSn4+SpJ4VjlV7cmWeIdP3R/g4Ne4dFWN98kzF1yHMcfqxsOGUnIaiOCu NOWWL8IHYQvlGvcWP+HMLRdWvQCWB/uEVWTsTuN/nLgEnHQ5nM1WiaLfxpyxDzPYxEfT buRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678587409; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=rAHr1Ym6m8HDaHWKquUTUVzIVoHfjpMPERLVKzK3KKk=; b=UNYDweelNtww8qgaN/3ny8xbyI7ihYBIlQ2gBsOn6VuLfJJ+uc4uMihw3gPhdT+n9E yElzCNN2n7sW6hQSqROGhos9yC2mamtdVU2jGRIV7LM6ZYZv7vzAEMcpTc/cYJoX9YNI vVth+sxntkazrl0wfXRpNmhTK+i4L3Hcdfrlz7FAEy+fO0chwoEd3+X9861NR1MMCR2H pwcJk/Akq15M9CGJgmbRA3zFYsTXfQcP1p3N41N0vbNYfPQOsjxww5dk5k/76es8W0zU O4b2cVgeE+8ulhvnvb08PvXL0EADaSt7I3nNvhSft4H90kDmS1T69Q/Bu/dNS0VwBaUk wiUA== X-Gm-Message-State: AO0yUKUUlWC5e9vkysbHWt4P+iP1u0MDfq/sCXDp0l6rboO/uDbZJXFP 45d50110WfMbMHRt+AnehMEwUgpo8Nxp X-Google-Smtp-Source: AK7set89GTn3xlU//DaHxsNTMW5n8cfLHRpRjrEJ4zsc3vMEzoFODRhs4WHPl8Qk3HhTDo7CO2zZ03Wlmv35 X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:b42b:2e07:afb:877e]) (user=irogers job=sendgmr) by 2002:a62:8607:0:b0:619:46b3:7903 with SMTP id x7-20020a628607000000b0061946b37903mr10924410pfd.3.1678587408990; Sat, 11 Mar 2023 18:16:48 -0800 (PST) Date: Sat, 11 Mar 2023 18:15:39 -0800 In-Reply-To: <20230312021543.3060328-1-irogers@google.com> Message-Id: <20230312021543.3060328-8-irogers@google.com> Mime-Version: 1.0 References: <20230312021543.3060328-1-irogers@google.com> X-Mailer: git-send-email 2.40.0.rc1.284.g88254d51c5-goog Subject: [PATCH v5 07/11] perf parse-events: Pass ownership of the group name From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Mark Rutland , Adrian Hunter , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Kan Liang , Zhengjun Xing , Ravi Bangoria , "Steinar H. Gunderson" , Kim Phillips , Florian Fischer , James Clark , Suzuki Poulouse , Sean Christopherson , Leo Yan , John Garry , Kajol Jain , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Stephane Eranian , Ian Rogers Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- 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, =20 handled: ret =3D 1; + free(name); out: free(leaders); return ret; @@ -1786,7 +1787,7 @@ void parse_events__set_leader(char *name, struct list= _head *list, =20 leader =3D arch_evlist__leader(list); __perf_evlist__set_leader(list, &leader->core); - leader->group_name =3D name ? strdup(name) : NULL; + leader->group_name =3D name; list_move(&leader->core.node, list); } =20 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 =3D $3; =20 inc_group_count(list, _parse_state); + /* Takes ownership of $1. */ parse_events__set_leader($1, list, _parse_state); - free($1); $$ =3D list; } | --=20 2.40.0.rc1.284.g88254d51c5-goog