From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753664AbaBDIlD (ORCPT ); Tue, 4 Feb 2014 03:41:03 -0500 Received: from merlin.infradead.org ([205.233.59.134]:38852 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750780AbaBDIkx (ORCPT ); Tue, 4 Feb 2014 03:40:53 -0500 Date: Tue, 4 Feb 2014 09:39:19 +0100 From: Peter Zijlstra To: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro , linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, rientjes@google.com, dchinner@redhat.com Subject: Re: [PATCH v4] oom: add tracepoints for oom_score_adj Message-ID: <20140204083918.GA31442@dyad.arnhem.chello.nl> References: <20111207095434.5f2fed4b.kamezawa.hiroyu@jp.fujitsu.com> <4EDF99B2.6040007@jp.fujitsu.com> <20111208104705.b2e50039.kamezawa.hiroyu@jp.fujitsu.com> <20111208153230.9c68eab3.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20111208153230.9c68eab3.kamezawa.hiroyu@jp.fujitsu.com> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 08, 2011 at 03:32:30PM +0900, KAMEZAWA Hiroyuki wrote: > From 5dc1f8c879ae424d5853af255df8860494209e39 Mon Sep 17 00:00:00 2001 > From: KAMEZAWA Hiroyuki > Date: Wed, 7 Dec 2011 09:58:16 +0900 > Subject: [PATCH] oom: trace point for oom_score_adj > > oom_score_adj is set to prevent a task from being killed by OOM-Killer. > Some daemons sets this value and their children inerit it sometimes. > Because inheritance of oom_score_adj is done automatically, users > can be confused at seeing the value and finds it's hard to debug. > > This patch adds trace point for oom_score_adj. This adds 3 trace > points. at > - update oom_score_adj > - fork() > - rename task->comm(typically, exec()) > And nobody was bothered by the fact that we already had fork and exec tracepoints?