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=-1.0 required=3.0 tests=MAILING_LIST_MULTI,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 A8334C07520 for ; Thu, 13 Sep 2018 12:55:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6CE7C20C0A for ; Thu, 13 Sep 2018 12:55:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6CE7C20C0A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727842AbeIMSE1 (ORCPT ); Thu, 13 Sep 2018 14:04:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:54272 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727749AbeIMSEZ (ORCPT ); Thu, 13 Sep 2018 14:04:25 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 0A31830842A8; Thu, 13 Sep 2018 12:55:05 +0000 (UTC) Received: from krava.brq.redhat.com (unknown [10.43.17.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id F1D78600C8; Thu, 13 Sep 2018 12:55:02 +0000 (UTC) From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: Adrian Hunter , lkml , Ingo Molnar , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Andi Kleen , Alexey Budankov Subject: [PATCH 05/48] perf tools: Use a software dummy event to track task/mmap events Date: Thu, 13 Sep 2018 14:54:07 +0200 Message-Id: <20180913125450.21342-6-jolsa@kernel.org> In-Reply-To: <20180913125450.21342-1-jolsa@kernel.org> References: <20180913125450.21342-1-jolsa@kernel.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Thu, 13 Sep 2018 12:55:05 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Namhyung Kim Add APIs for software dummy event to track task/comm/mmap events separately. The perf record will use them to save such events in a separate mmap buffer to make it easy to index. This is just a preparation of multi-thread support which will come later. Cc: Adrian Hunter Link: http://lkml.kernel.org/n/tip-qo7opc5kb3ueuicyjdyqupkh@git.kernel.org Signed-off-by: Namhyung Kim Signed-off-by: Jiri Olsa --- tools/perf/util/evlist.c | 30 ++++++++++++++++++++++++++++++ tools/perf/util/evlist.h | 1 + tools/perf/util/evsel.h | 15 +++++++++++++++ 3 files changed, 46 insertions(+) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index be440df29615..7428d65650c9 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -267,6 +267,36 @@ int perf_evlist__add_dummy(struct perf_evlist *evlist) return 0; } +int perf_evlist__add_dummy_tracking(struct perf_evlist *evlist) +{ + struct perf_event_attr attr = { + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_DUMMY, + .exclude_kernel = 1, + }; + struct perf_evsel *evsel; + + event_attr_init(&attr); + + evsel = perf_evsel__new(&attr); + if (evsel == NULL) + goto error; + + /* use strdup() because free(evsel) assumes name is allocated */ + evsel->name = strdup("dummy"); + if (!evsel->name) + goto error_free; + + perf_evlist__add(evlist, evsel); + perf_evlist__set_tracking_event(evlist, evsel); + + return 0; +error_free: + perf_evsel__delete(evsel); +error: + return -ENOMEM; +} + static int perf_evlist__add_attrs(struct perf_evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs) { diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index dc66436add98..c11cb80e7847 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -76,6 +76,7 @@ static inline int perf_evlist__add_default(struct perf_evlist *evlist) return __perf_evlist__add_default(evlist, true); } +int perf_evlist__add_dummy_tracking(struct perf_evlist *evlist); int __perf_evlist__add_default_attrs(struct perf_evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs); diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 4f8430a85531..6e18b9ff997d 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -411,6 +411,21 @@ static inline bool perf_evsel__is_clock(struct perf_evsel *evsel) perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK); } +/** + * perf_evsel__is_dummy_tracking - Return whether given evsel is a dummy + * event for tracking meta events only + * + * @evsel - evsel selector to be tested + * + * Return %true if event is a dummy tracking event + */ +static inline bool perf_evsel__is_dummy_tracking(struct perf_evsel *evsel) +{ + return evsel->attr.type == PERF_TYPE_SOFTWARE && + evsel->attr.config == PERF_COUNT_SW_DUMMY && + evsel->attr.task == 1 && evsel->attr.mmap == 1; +} + struct perf_attr_details { bool freq; bool verbose; -- 2.17.1