From nobody Sat Apr 11 07:07:33 2026 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 F0947C678D4 for ; Thu, 2 Mar 2023 04:14:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229813AbjCBEOy (ORCPT ); Wed, 1 Mar 2023 23:14:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229962AbjCBENo (ORCPT ); Wed, 1 Mar 2023 23:13:44 -0500 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E6774608A for ; Wed, 1 Mar 2023 20:13:42 -0800 (PST) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-536bbaeceeaso300768047b3.11 for ; Wed, 01 Mar 2023 20:13:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1677730418; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=s8e2GbMOJCiKu31bRYD395XKtu1B0wMiO24x2A+fRDY=; b=Aqy8a7r86cYMeWfSGW4ApM7jCJHRfZfX6lC7MGITzZBZFk8BccoaKzvaKBEOPPT5OB nfNFTcCbajzSA10N/Bsznosyz9V/I9PYHFY9iZkv53xckgR/vBLv5Fa/n5EpjzYEQb9f N2ZFXeSQynryaBhzqg7m331cZpt+UsWZ/SfXSv+K2XoHzrVEOAoMDlquiKBgqS2D7vd7 QjAxm3DeeXtAAMqkHttbbFO9w37uv3BPpYUfH5sHFjXV4qM64d4gN3eiG+RyJu+jRI86 DUuwNpdvxXEixmNLix17/YVV2lXeT9dnMhiadzZf2JDJCvh+GCfhGf2TKTN+H+NTHG+B oc5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1677730418; 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=s8e2GbMOJCiKu31bRYD395XKtu1B0wMiO24x2A+fRDY=; b=MEHdTc9NFRuGpeWnb4mf22/V0cvZEqM0Pmk4W/P/IjfE8AhfJyqoWZGoxyQx4iXjED 7ZK5s1bOiL0pGXeA62kw+FCli6NH7YzmFEIMUCix8UV4KTNiaQOagUfP7bpfD3ijsTuO MC4XcZ6RouX995DrqhpjkrVwcpDOHv4wwxDDB1zrxJ2Ojs9GWY6Ogh5nai8WZa1MzwEv RAKxLRKUypFj75vQdF3ku7aGVkOr+v4286nunhzeAX6SDiwa06X6fP909ftupD41GZdu +xjE38skfYh2diTJggPLKqoj324tQD916hTTu0QEEUwJ98fn2P4B3vFb9VhYPH8cm1Ju 6crQ== X-Gm-Message-State: AO0yUKULpqPQGz2U/1UcTJ26Fg0empvAvP5ioGbOghVAvh39utSERtw7 pTf3FjcQ4YImNzmZ01bXyOxqkFe7QQM7 X-Google-Smtp-Source: AK7set/3Ple0PpXkqYIrXmPMzXDI7RYhZscTwrY6yWIaY05VqKoWtRvy3KcSVdAjUeCSIcoVWmRAIDoP/Kqz X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:bdf9:f5cb:d05:c4d5]) (user=irogers job=sendgmr) by 2002:a05:6902:88:b0:a27:3ecd:6 with SMTP id h8-20020a056902008800b00a273ecd0006mr532396ybs.1.1677730418420; Wed, 01 Mar 2023 20:13:38 -0800 (PST) Date: Wed, 1 Mar 2023 20:12:09 -0800 In-Reply-To: <20230302041211.852330-1-irogers@google.com> Message-Id: <20230302041211.852330-9-irogers@google.com> Mime-Version: 1.0 References: <20230302041211.852330-1-irogers@google.com> X-Mailer: git-send-email 2.39.2.722.g9855ee24e9-goog Subject: [PATCH v1 08/10] perf parse-events: Pass ownership of the group name From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Kan Liang , Zhengjun Xing , Ravi Bangoria , Adrian Hunter , "Steinar H. Gunderson" , Qi Liu , 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 2.39.2.722.g9855ee24e9-goog