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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 697DCC433E0 for ; Tue, 26 May 2020 06:11:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4C580208A7 for ; Tue, 26 May 2020 06:11:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728120AbgEZGLj (ORCPT ); Tue, 26 May 2020 02:11:39 -0400 Received: from mga06.intel.com ([134.134.136.31]:16985 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726207AbgEZGLg (ORCPT ); Tue, 26 May 2020 02:11:36 -0400 IronPort-SDR: WeYBoT7mdsE0xCcsfTC8aN58UAuqKyRubJVlW06bxR5g3u1tNv+rghxSu8mcGMETvEvlka8QmI ItddAac3D+Yw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 May 2020 23:11:35 -0700 IronPort-SDR: z9UQCckOyJt6mjENNnQWUwijYTPL/KR5G4uoEMcvdyI6xCMVoH0+FZwzPMWPTDcGjqziKwRAbR JeJNQHZY01Aw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,436,1583222400"; d="scan'208";a="291068677" Received: from kbl-ppc.sh.intel.com ([10.239.159.118]) by fmsmga004.fm.intel.com with ESMTP; 25 May 2020 23:11:33 -0700 From: Jin Yao To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org, mingo@redhat.com, alexander.shishkin@linux.intel.com Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com, kan.liang@intel.com, yao.jin@intel.com, Jin Yao Subject: [PATCH v4 4/7] perf util: Link stream pair Date: Tue, 26 May 2020 14:09:17 +0800 Message-Id: <20200526060920.26490-5-yao.jin@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200526060920.26490-1-yao.jin@linux.intel.com> References: <20200526060920.26490-1-yao.jin@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In previous patch, we have created an evsel_streams for one event, and top N hottest streams will be saved in a stream array in evsel_streams. This patch compares total streams among two evsel_streams. Once two streams are fully matched, they will be linked as a pair. From the pair, we can know which streams are matched. Signed-off-by: Jin Yao --- tools/perf/util/stream.c | 53 ++++++++++++++++++++++++++++++++++++++++ tools/perf/util/stream.h | 4 +++ 2 files changed, 57 insertions(+) diff --git a/tools/perf/util/stream.c b/tools/perf/util/stream.c index 7f538d1085ef..76896a790798 100644 --- a/tools/perf/util/stream.c +++ b/tools/perf/util/stream.c @@ -161,3 +161,56 @@ struct evsel_streams *evsel_streams_get(struct evsel_streams *es, return NULL; } + +static struct stream *stream_callchain_match(struct stream *base_stream, + struct evsel_streams *es_pair) +{ + for (int i = 0; i < es_pair->nr_streams; i++) { + struct stream *pair_stream = &es_pair->streams[i]; + + if (callchain_cnode_matched(base_stream->cnode, + pair_stream->cnode)) { + return pair_stream; + } + } + + return NULL; +} + +static struct stream *stream_match(struct stream *base_stream, + struct evsel_streams *es_pair, + enum stream_type stream_type) +{ + if (stream_type == STREAM_CALLCHAIN) + return stream_callchain_match(base_stream, es_pair); + + return NULL; +} + +static void stream_link(struct stream *base_stream, struct stream *pair_stream, + enum stream_type stream_type) +{ + if (stream_type == STREAM_CALLCHAIN) { + base_stream->pair_cnode = pair_stream->cnode; + pair_stream->pair_cnode = base_stream->cnode; + } +} + +void match_evsel_streams(struct evsel_streams *es_base, + struct evsel_streams *es_pair) +{ + if (es_base->stream_type != es_pair->stream_type) + return; + + for (int i = 0; i < es_base->nr_streams; i++) { + struct stream *base_stream = &es_base->streams[i]; + struct stream *pair_stream; + + pair_stream = stream_match(base_stream, es_pair, + es_base->stream_type); + if (pair_stream) { + stream_link(base_stream, pair_stream, + es_base->stream_type); + } + } +} diff --git a/tools/perf/util/stream.h b/tools/perf/util/stream.h index 705aa7cde3de..53f34e63f8fb 100644 --- a/tools/perf/util/stream.h +++ b/tools/perf/util/stream.h @@ -11,6 +11,7 @@ enum stream_type { struct stream { struct callchain_node *cnode; + struct callchain_node *pair_cnode; }; struct evsel_streams { @@ -30,4 +31,7 @@ struct evsel_streams *perf_evlist__create_streams(struct evlist *evlist, struct evsel_streams *evsel_streams_get(struct evsel_streams *es, int nr_evsel, int evsel_idx); +void match_evsel_streams(struct evsel_streams *es_base, + struct evsel_streams *es_pair); + #endif /* __PERF_STREAM_H */ -- 2.17.1