From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751960Ab1IZPzb (ORCPT ); Mon, 26 Sep 2011 11:55:31 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:23792 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751692Ab1IZPza (ORCPT ); Mon, 26 Sep 2011 11:55:30 -0400 From: Andrew Vagin To: linux-kernel@vger.kernel.org Cc: Steven Rostedt , Frederic Weisbecker , Ingo Molnar , Peter Zijlstra , Paul Mackerras , Arnaldo Carvalho de Melo , avagin@openvz.org Subject: [PATCH 4/4] events: sched_stat_template saves call chains of a target task Date: Mon, 26 Sep 2011 19:55:35 +0400 Message-Id: <1317052535-1765247-5-git-send-email-avagin@openvz.org> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1317052535-1765247-1-git-send-email-avagin@openvz.org> References: <1317052535-1765247-1-git-send-email-avagin@openvz.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It's more useful, because sched:sched_stat_iowait: Before we can see that block layer notifies that i/o request completed. Now we can see which code wanted to read/write data. sched:sched_stat_sleep: Before we can see that delayed_work_timer_fn wakes up a task. Now we see where a task sleeps. Signed-off-by: Andrew Vagin --- include/trace/events/sched.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index f633478..7468c7a 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -296,6 +296,7 @@ DECLARE_EVENT_CLASS(sched_stat_template, __entry->delay = delay; ) TP_perf_assign( + __perf_task(tsk); __perf_count(delay); ), -- 1.7.1