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=-12.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED 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 009A4C43381 for ; Sat, 9 Mar 2019 20:08:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C12A2206BA for ; Sat, 9 Mar 2019 20:08:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726542AbfCIUIH (ORCPT ); Sat, 9 Mar 2019 15:08:07 -0500 Received: from terminus.zytor.com ([198.137.202.136]:44653 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726298AbfCIUIG (ORCPT ); Sat, 9 Mar 2019 15:08:06 -0500 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x29K7meZ3206055 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 9 Mar 2019 12:07:49 -0800 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x29K7m0Y3206052; Sat, 9 Mar 2019 12:07:48 -0800 Date: Sat, 9 Mar 2019 12:07:48 -0800 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Jiri Olsa Message-ID: Cc: peterz@infradead.org, jonas.rabenstein@studium.uni-erlangen.de, mingo@kernel.org, ravi.bangoria@linux.ibm.com, linux-kernel@vger.kernel.org, namhyung@kernel.org, jolsa@kernel.org, ak@linux.intel.com, hpa@zytor.com, tglx@linutronix.de, nasastry@in.ibm.com, acme@redhat.com, alexander.shishkin@linux.intel.com Reply-To: peterz@infradead.org, tglx@linutronix.de, jonas.rabenstein@studium.uni-erlangen.de, ak@linux.intel.com, jolsa@kernel.org, hpa@zytor.com, alexander.shishkin@linux.intel.com, ravi.bangoria@linux.ibm.com, namhyung@kernel.org, linux-kernel@vger.kernel.org, nasastry@in.ibm.com, acme@redhat.com, mingo@kernel.org In-Reply-To: <20190305152536.21035-5-jolsa@kernel.org> References: <20190305152536.21035-5-jolsa@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf tools: Read and store caps/max_precise in perf_pmu Git-Commit-ID: 90a86bde97ba050cb3c9ccb215252ee2d2d705fa X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Archived-At: List-Archive: List-Post: Commit-ID: 90a86bde97ba050cb3c9ccb215252ee2d2d705fa Gitweb: https://git.kernel.org/tip/90a86bde97ba050cb3c9ccb215252ee2d2d705fa Author: Jiri Olsa AuthorDate: Tue, 5 Mar 2019 16:25:32 +0100 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 6 Mar 2019 18:18:17 -0300 perf tools: Read and store caps/max_precise in perf_pmu Read the caps/max_precise value and store it in struct perf_pmu to be used when setting the maximum precise_ip field in following patch. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jonas Rabenstein Cc: Nageswara R Sastry Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ravi Bangoria Link: http://lkml.kernel.org/r/20190305152536.21035-5-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/pmu.c | 14 ++++++++++++++ tools/perf/util/pmu.h | 1 + 2 files changed, 15 insertions(+) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 51d437f55d18..6199a3174ab9 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -752,6 +752,19 @@ perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) return NULL; } +static int pmu_max_precise(const char *name) +{ + char path[PATH_MAX]; + int max_precise = -1; + + scnprintf(path, PATH_MAX, + "bus/event_source/devices/%s/caps/max_precise", + name); + + sysfs__read_int(path, &max_precise); + return max_precise; +} + static struct perf_pmu *pmu_lookup(const char *name) { struct perf_pmu *pmu; @@ -784,6 +797,7 @@ static struct perf_pmu *pmu_lookup(const char *name) pmu->name = strdup(name); pmu->type = type; pmu->is_uncore = pmu_is_uncore(name); + pmu->max_precise = pmu_max_precise(name); pmu_add_cpu_aliases(&aliases, pmu); INIT_LIST_HEAD(&pmu->format); diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 47253c3daf55..bd9ec2704a57 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -26,6 +26,7 @@ struct perf_pmu { __u32 type; bool selectable; bool is_uncore; + int max_precise; struct perf_event_attr *default_config; struct cpu_map *cpus; struct list_head format; /* HEAD struct perf_pmu_format -> list */