From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755536AbcIMHqE (ORCPT ); Tue, 13 Sep 2016 03:46:04 -0400 Received: from LGEAMRELO12.lge.com ([156.147.23.52]:40581 "EHLO lgeamrelo12.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754450AbcIMHp4 (ORCPT ); Tue, 13 Sep 2016 03:45:56 -0400 X-Original-SENDERIP: 156.147.1.121 X-Original-MAILFROM: namhyung@kernel.org X-Original-SENDERIP: 10.177.227.17 X-Original-MAILFROM: namhyung@kernel.org From: Namhyung Kim To: Arnaldo Carvalho de Melo Cc: Ingo Molnar , Peter Zijlstra , Jiri Olsa , LKML , Andi Kleen Subject: [PATCH 1/7] perf hist: Introduce hists__match_hierarchy() Date: Tue, 13 Sep 2016 16:45:46 +0900 Message-Id: <20160913074552.13284-2-namhyung@kernel.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20160913074552.13284-1-namhyung@kernel.org> References: <20160913074552.13284-1-namhyung@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The hists__match_hierarchy() is to find matching hist entries in a group. A matching entry has same values for all sort keys given. With event group, a leader event should show other members in a group. So each entry in the leader should be able to find its pair entries which have same values. With hierarchy mode, it needs to search all matching children in a hierarchy. An example output would look like below: # Overhead Command / Shared Object / Symbol # ...................... .................................. # 25.74% 27.18% sh 19.96% 24.14% libc-2.24.so 9.55% 14.64% [.] __strcmp_sse2 1.54% 0.00% [.] __tfind 1.07% 1.13% [.] _int_malloc ... In the above example, two overhead were shown - one for leader and another for member. They were matched since their command, dso and symbol have same values. Signed-off-by: Namhyung Kim --- tools/perf/util/hist.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index de15dbcdcecf..be3f5ce31303 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -2174,6 +2174,51 @@ static struct hist_entry *hists__find_entry(struct hists *hists, return NULL; } +static struct hist_entry *hists__find_hierarchy_entry(struct rb_root *root, + struct hist_entry *he) +{ + struct rb_node *n = root->rb_node; + + while (n) { + struct hist_entry *iter; + struct perf_hpp_fmt *fmt; + int64_t cmp = 0; + + iter = rb_entry(n, struct hist_entry, rb_node_in); + perf_hpp_list__for_each_sort_list(he->hpp_list, fmt) { + cmp = fmt->collapse(fmt, iter, he); + if (cmp) + break; + } + + if (cmp < 0) + n = n->rb_left; + else if (cmp > 0) + n = n->rb_right; + else + return iter; + } + + return NULL; +} + +static void hists__match_hierarchy(struct rb_root *leader_root, + struct rb_root *other_root) +{ + struct rb_node *nd; + struct hist_entry *pos, *pair; + + for (nd = rb_first(leader_root); nd; nd = rb_next(nd)) { + pos = rb_entry(nd, struct hist_entry, rb_node_in); + pair = hists__find_hierarchy_entry(other_root, pos); + + if (pair) { + hist_entry__add_pair(pair, pos); + hists__match_hierarchy(&pos->hroot_in, &pair->hroot_in); + } + } +} + /* * Look for pairs to link to the leader buckets (hist_entries): */ @@ -2183,6 +2228,12 @@ void hists__match(struct hists *leader, struct hists *other) struct rb_node *nd; struct hist_entry *pos, *pair; + if (symbol_conf.report_hierarchy) { + /* hierarchy report always collapses entries */ + return hists__match_hierarchy(&leader->entries_collapsed, + &other->entries_collapsed); + } + if (hists__has(leader, need_collapse)) root = &leader->entries_collapsed; else -- 2.9.3