From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754994AbaHNIta (ORCPT ); Thu, 14 Aug 2014 04:49:30 -0400 Received: from terminus.zytor.com ([198.137.202.10]:36528 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754530AbaHNIt0 (ORCPT ); Thu, 14 Aug 2014 04:49:26 -0400 Date: Thu, 14 Aug 2014 01:48:54 -0700 From: tip-bot for Namhyung Kim Message-ID: Cc: acme@redhat.com, linux-kernel@vger.kernel.org, paulus@samba.org, hpa@zytor.com, mingo@kernel.org, andi@firstfloor.org, a.p.zijlstra@chello.nl, namhyung.kim@lge.com, namhyung@kernel.org, jolsa@redhat.com, fweisbec@gmail.com, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, paulus@samba.org, linux-kernel@vger.kernel.org, acme@redhat.com, andi@firstfloor.org, a.p.zijlstra@chello.nl, namhyung.kim@lge.com, namhyung@kernel.org, jolsa@redhat.com, fweisbec@gmail.com, tglx@linutronix.de In-Reply-To: <1407909761-10822-1-git-send-email-namhyung@kernel.org> References: <1407909761-10822-1-git-send-email-namhyung@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf hists browser: Fix a small callchain display bug Git-Commit-ID: 82162b5ae3d152fd7d887b36213f5b6785fe1294 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 List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 82162b5ae3d152fd7d887b36213f5b6785fe1294 Gitweb: http://git.kernel.org/tip/82162b5ae3d152fd7d887b36213f5b6785fe1294 Author: Namhyung Kim AuthorDate: Wed, 13 Aug 2014 15:02:41 +0900 Committer: Arnaldo Carvalho de Melo CommitDate: Wed, 13 Aug 2014 17:12:56 -0300 perf hists browser: Fix a small callchain display bug The currently when perf TUI report shows callchain, the first level chains have bogus '+' sign even though only the last one has children. Since they are on a single line of the chain, toggling intermediate entries has no effect. Fix it to show '+' sign at the last entry only. Note that non-first level callchain entries don't have this problem. Before: --------------------------------------------------------------------------- Children Self Command Shared Object Symbols - 40.70% 0.00% swapper [kernel.kallsyms] [k] cpuidle_wrap_enter + cpuidle_wrap_enter + cpuidle_enter_tk + cpuidle_idle_call + cpu_idle After: --------------------------------------------------------------------------- Children Self Command Shared Object Symbols - 40.70% 0.00% swapper [kernel.kallsyms] [k] cpuidle_wrap_enter cpuidle_wrap_enter cpuidle_enter_tk cpuidle_idle_call + cpu_idle Signed-off-by: Namhyung Kim Acked-by: Ingo Molnar Cc: Andi Kleen Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/1407909761-10822-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/ui/browsers/hists.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index 045c1e1..1818d12 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -228,8 +228,10 @@ static void callchain_node__init_have_children(struct callchain_node *node) { struct callchain_list *chain; - list_for_each_entry(chain, &node->val, list) + if (!list_empty(&node->val)) { + chain = list_entry(node->val.prev, struct callchain_list, list); chain->ms.has_children = !RB_EMPTY_ROOT(&node->rb_root); + } callchain_node__init_have_children_rb_tree(node); }