From mboxrd@z Thu Jan 1 00:00:00 1970 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 BD86EC433EF for ; Tue, 24 May 2022 07:55:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235498AbiEXHzl (ORCPT ); Tue, 24 May 2022 03:55:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60260 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235469AbiEXHzQ (ORCPT ); Tue, 24 May 2022 03:55:16 -0400 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D17438722C for ; Tue, 24 May 2022 00:55:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1653378915; x=1684914915; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=wlVX3TF3v9W6UCNas3Sk52q6mw1x+2oACY9LNZJEDXk=; b=V/5Om1kxErbxTyQnfySAYaUiaKvJSvP6uste0b5sru0OweSVZafu1POQ Cs7c3SPaU2gBQLWk1eKgrn8GaUrkpvR2IZ1eBYh6P7NowzmEWH9o/K971 RzG56cX42GX+Y43ImkBhd7cUH7kfsvXifm8dIjr5twXz9wZhoQ5J5jlrf 7lkC4v9/J9ulwGBgQiioUG2Bnrk1yjf0SCBC1wSBqgmgIie3IoMMUuTdA Yy1VDauc5YlQebayB0l7MU2Z7rcchANbCgrNvnHhRnKg/NE9M3aRD/72l dpQMJwnClg90DnbXA2YzW0Ey3ZulnibPpC4SEij+F85IzLumMDwzAzjUL A==; X-IronPort-AV: E=McAfee;i="6400,9594,10356"; a="273455439" X-IronPort-AV: E=Sophos;i="5.91,248,1647327600"; d="scan'208";a="273455439" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2022 00:55:15 -0700 X-IronPort-AV: E=Sophos;i="5.91,248,1647327600"; d="scan'208";a="717072384" Received: from ahunter6-mobl1.ger.corp.intel.com (HELO ahunter-VirtualBox.home\044ger.corp.intel.com) ([10.252.52.210]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 May 2022 00:55:13 -0700 From: Adrian Hunter To: Arnaldo Carvalho de Melo Cc: Jiri Olsa , Ian Rogers , Alexey Bayduraev , Namhyung Kim , Leo Yan , linux-kernel@vger.kernel.org Subject: [PATCH V4 05/15] perf evlist: Add evlist__add_dummy_on_all_cpus() Date: Tue, 24 May 2022 10:54:26 +0300 Message-Id: <20220524075436.29144-6-adrian.hunter@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220524075436.29144-1-adrian.hunter@intel.com> References: <20220524075436.29144-1-adrian.hunter@intel.com> MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add evlist__add_dummy_on_all_cpus() to enable creating a system-wide dummy event that sets up the system-wide maps before map propagation. For convenience, add evlist__add_aux_dummy() so that the logic can be used whether or not the event needs to be system-wide. Acked-by: Namhyung Kim Signed-off-by: Adrian Hunter --- tools/perf/util/evlist.c | 45 ++++++++++++++++++++++++++++++++++++++++ tools/perf/util/evlist.h | 5 +++++ 2 files changed, 50 insertions(+) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index efad0e691045..48af7d379d82 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -264,6 +264,51 @@ int evlist__add_dummy(struct evlist *evlist) return 0; } +static void evlist__add_on_all_cpus(struct evlist *evlist, struct evsel *evsel) +{ + evsel->core.system_wide = true; + + /* + * All CPUs. + * + * Note perf_event_open() does not accept CPUs that are not online, so + * in fact this CPU list will include only all online CPUs. + */ + perf_cpu_map__put(evsel->core.own_cpus); + evsel->core.own_cpus = perf_cpu_map__new(NULL); + perf_cpu_map__put(evsel->core.cpus); + evsel->core.cpus = perf_cpu_map__get(evsel->core.own_cpus); + + /* No threads */ + perf_thread_map__put(evsel->core.threads); + evsel->core.threads = perf_thread_map__new_dummy(); + + evlist__add(evlist, evsel); +} + +struct evsel *evlist__add_aux_dummy(struct evlist *evlist, bool system_wide) +{ + struct evsel *evsel = evlist__dummy_event(evlist); + + if (!evsel) + return NULL; + + evsel->core.attr.exclude_kernel = 1; + evsel->core.attr.exclude_guest = 1; + evsel->core.attr.exclude_hv = 1; + evsel->core.attr.freq = 0; + evsel->core.attr.sample_period = 1; + evsel->no_aux_samples = true; + evsel->name = strdup("dummy:u"); + + if (system_wide) + evlist__add_on_all_cpus(evlist, evsel); + else + evlist__add(evlist, evsel); + + return evsel; +} + static int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs) { struct evsel *evsel, *n; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 4062f5aebfc1..1bde9ccf4e7d 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -114,6 +114,11 @@ int arch_evlist__add_default_attrs(struct evlist *evlist); struct evsel *arch_evlist__leader(struct list_head *list); int evlist__add_dummy(struct evlist *evlist); +struct evsel *evlist__add_aux_dummy(struct evlist *evlist, bool system_wide); +static inline struct evsel *evlist__add_dummy_on_all_cpus(struct evlist *evlist) +{ + return evlist__add_aux_dummy(evlist, true); +} int evlist__add_sb_event(struct evlist *evlist, struct perf_event_attr *attr, evsel__sb_cb_t cb, void *data); -- 2.25.1