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 X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C11B8C43381 for ; Mon, 8 Feb 2021 18:22:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 84B6264E9C for ; Mon, 8 Feb 2021 18:22:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235597AbhBHSWG (ORCPT ); Mon, 8 Feb 2021 13:22:06 -0500 Received: from mga14.intel.com ([192.55.52.115]:62838 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234118AbhBHPp2 (ORCPT ); Mon, 8 Feb 2021 10:45:28 -0500 IronPort-SDR: vfGEzhnnLCvX0J4uzU+nu+6y9TiyrAiQjwO3e7B8eqQQQ9yAwS6zhdMR7W6/vt9zCriaJggUAB jmHRB4MGMNUw== X-IronPort-AV: E=McAfee;i="6000,8403,9889"; a="180952045" X-IronPort-AV: E=Sophos;i="5.81,162,1610438400"; d="scan'208";a="180952045" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Feb 2021 07:30:36 -0800 IronPort-SDR: Ynh3p6Wg355GnbjZEodKzkDRNON3zNkG5/zADujRs6pcN1jN6VTdu4t8FQxHYpeTi1zzXyDKep V3jNfnD3/3yQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,162,1610438400"; d="scan'208";a="358820873" Received: from otc-lr-04.jf.intel.com ([10.54.39.41]) by orsmga003.jf.intel.com with ESMTP; 08 Feb 2021 07:30:36 -0800 From: kan.liang@linux.intel.com To: peterz@infradead.org, acme@kernel.org, mingo@kernel.org, linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, bp@alien8.de, namhyung@kernel.org, jolsa@redhat.com, ak@linux.intel.com, yao.jin@linux.intel.com, alexander.shishkin@linux.intel.com, adrian.hunter@intel.com Subject: [PATCH 29/49] perf pmu: Add hybrid helper functions Date: Mon, 8 Feb 2021 07:25:26 -0800 Message-Id: <1612797946-18784-30-git-send-email-kan.liang@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1612797946-18784-1-git-send-email-kan.liang@linux.intel.com> References: <1612797946-18784-1-git-send-email-kan.liang@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jin Yao The functions perf_pmu__is_hybrid and perf_pmu__find_hybrid_pmu can be used to identify the hybrid platform and return the found hybrid cpu pmu. All the detected hybrid pmus have been saved in 'perf_pmu__hybrid_pmus' list. So we just need to search this list for a pmu name. perf_pmu__hybrid_type_to_pmu converts the user specified string to hybrid pmu name. This is used to support the '--cputype' option in next patches. perf_pmu__hybrid_exist checks if hybrid pmus exist. Reviewed-by: Andi Kleen Signed-off-by: Jin Yao --- tools/perf/util/pmu.c | 40 ++++++++++++++++++++++++++++++++++++++++ tools/perf/util/pmu.h | 11 +++++++++++ 2 files changed, 51 insertions(+) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index e97b121..04447f5 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1842,3 +1842,43 @@ int perf_pmu__caps_parse(struct perf_pmu *pmu) return nr_caps; } + +struct perf_pmu *perf_pmu__find_hybrid_pmu(const char *name) +{ + struct perf_pmu *pmu; + + if (!name) + return NULL; + + perf_pmu__for_each_hybrid_pmus(pmu) { + if (!strcmp(name, pmu->name)) + return pmu; + } + + return NULL; +} + +bool perf_pmu__is_hybrid(const char *name) +{ + return perf_pmu__find_hybrid_pmu(name) != NULL; +} + +char *perf_pmu__hybrid_type_to_pmu(const char *type) +{ + char *pmu_name = NULL; + + if (asprintf(&pmu_name, "cpu_%s", type) < 0) + return NULL; + + if (perf_pmu__is_hybrid(pmu_name)) + return pmu_name; + + /* + * The pmus may be not scanned yet, so check the sysfs. + */ + if (pmu_is_hybrid(pmu_name)) + return pmu_name; + + free(pmu_name); + return NULL;; +} diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 99bdb5d..bb74595 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -131,4 +131,15 @@ int perf_pmu__caps_parse(struct perf_pmu *pmu); #define perf_pmu__for_each_hybrid_pmus(pmu) \ list_for_each_entry(pmu, &perf_pmu__hybrid_pmus, hybrid_list) +struct perf_pmu *perf_pmu__find_hybrid_pmu(const char *name); + +bool perf_pmu__is_hybrid(const char *name); + +char *perf_pmu__hybrid_type_to_pmu(const char *type); + +static inline bool perf_pmu__hybrid_exist(void) +{ + return !list_empty(&perf_pmu__hybrid_pmus); +} + #endif /* __PMU_H */ -- 2.7.4