From nobody Thu Sep 11 12:49:23 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 4EA29C04FE0 for ; Wed, 2 Aug 2023 07:54:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233773AbjHBHy4 (ORCPT ); Wed, 2 Aug 2023 03:54:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233619AbjHBHy1 (ORCPT ); Wed, 2 Aug 2023 03:54:27 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7357B4EEF; Wed, 2 Aug 2023 00:52:25 -0700 (PDT) Received: from kwepemm600003.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RG4140YWlzrS5S; Wed, 2 Aug 2023 15:51:20 +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 15.1.2507.27; Wed, 2 Aug 2023 15:52:22 +0800 From: Yang Jihong To: , , , , , , , , , , , , , , , CC: Subject: [PATCH v4 1/7] perf evlist: Add perf_evlist__go_system_wide() helper Date: Wed, 2 Aug 2023 07:49:42 +0000 Message-ID: <20230802074948.136468-2-yangjihong1@huawei.com> X-Mailer: git-send-email 2.30.GIT In-Reply-To: <20230802074948.136468-1-yangjihong1@huawei.com> References: <20230802074948.136468-1-yangjihong1@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.67.174.95] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) 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" For dummy events that keep tracking, we may need to modify its cpu_maps. For example, change the cpu_maps to record sideband events for all CPUS. Add perf_evlist__go_system_wide() helper to support this scenario. Signed-off-by: Yang Jihong --- tools/lib/perf/evlist.c | 9 +++++++++ tools/lib/perf/include/internal/evlist.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c index b8b066d0dc5e..3acbbccc1901 100644 --- a/tools/lib/perf/evlist.c +++ b/tools/lib/perf/evlist.c @@ -738,3 +738,12 @@ int perf_evlist__nr_groups(struct perf_evlist *evlist) } return nr_groups; } + +void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_e= vsel *evsel) +{ + if (!evsel->system_wide) { + evsel->system_wide =3D true; + if (evlist->needs_map_propagation) + __perf_evlist__propagate_maps(evlist, evsel); + } +} diff --git a/tools/lib/perf/include/internal/evlist.h b/tools/lib/perf/incl= ude/internal/evlist.h index 3339bc2f1765..d86ffe8ed483 100644 --- a/tools/lib/perf/include/internal/evlist.h +++ b/tools/lib/perf/include/internal/evlist.h @@ -135,4 +135,6 @@ int perf_evlist__id_add_fd(struct perf_evlist *evlist, void perf_evlist__reset_id_hash(struct perf_evlist *evlist); =20 void __perf_evlist__set_leader(struct list_head *list, struct perf_evsel *= leader); + +void perf_evlist__go_system_wide(struct perf_evlist *evlist, struct perf_e= vsel *evsel); #endif /* __LIBPERF_INTERNAL_EVLIST_H */ --=20 2.30.GIT