From nobody Tue Feb 10 16:57:54 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 9CD06C7EE22 for ; Thu, 11 May 2023 07:53:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237678AbjEKHxi (ORCPT ); Thu, 11 May 2023 03:53:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237092AbjEKHxb (ORCPT ); Thu, 11 May 2023 03:53:31 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07B9926A5; Thu, 11 May 2023 00:53:28 -0700 (PDT) Received: from kwepemm600003.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4QH3tR2B5bzTkD6; Thu, 11 May 2023 15:48:47 +0800 (CST) Received: from localhost.localdomain (10.67.174.95) by kwepemm600003.china.huawei.com (7.193.23.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Thu, 11 May 2023 15:53:26 +0800 From: Yang Jihong To: , , , , , , , , , , , , CC: Subject: [PATCH v2 1/4] perf trace-event-info: Add tracepoint_id_to_name() helper Date: Thu, 11 May 2023 07:51:51 +0000 Message-ID: <20230511075154.240163-2-yangjihong1@huawei.com> X-Mailer: git-send-email 2.30.GIT In-Reply-To: <20230511075154.240163-1-yangjihong1@huawei.com> References: <20230511075154.240163-1-yangjihong1@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.67.174.95] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600003.china.huawei.com (7.193.23.202) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add tracepoint_id_to_name() helper to search for the trace events directory by given event id and return the corresponding tracepoint. Signed-off-by: Yang Jihong --- tools/perf/util/trace-event-info.c | 11 +++++++++++ tools/perf/util/trace-event.h | 6 ++++++ 2 files changed, 17 insertions(+) diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-eve= nt-info.c index c24b3a15e319..a5c65cb02a28 100644 --- a/tools/perf/util/trace-event-info.c +++ b/tools/perf/util/trace-event-info.c @@ -466,6 +466,17 @@ static struct tracepoint_path *tracepoint_id_to_path(u= 64 config) return NULL; } =20 +char *tracepoint_id_to_name(u64 config) +{ + char *buf =3D NULL; + struct tracepoint_path *path =3D tracepoint_id_to_path(config); + + if ((path !=3D NULL) && (asprintf(&buf, "%s:%s", path->system, path->name= ) > 0)) + return buf; + + return NULL; +} + static struct tracepoint_path *tracepoint_name_to_path(const char *name) { struct tracepoint_path *path =3D zalloc(sizeof(*path)); diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index a0cff184b1cd..a69ee29419f3 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -62,6 +62,12 @@ unsigned long long eval_flag(const char *flag); =20 int read_tracing_data(int fd, struct list_head *pattrs); =20 +/* + * Return the tracepoint name in the format "subsystem:event_name", + * callers should free the returned string. + */ +char *tracepoint_id_to_name(u64 config); + struct tracing_data { /* size is only valid if temp is 'true' */ ssize_t size; --=20 2.30.GIT