From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f177.google.com (mail-we0-f177.google.com [74.125.82.177]) by kanga.kvack.org (Postfix) with ESMTP id 8C2D06B0038 for ; Fri, 12 Sep 2014 08:22:05 -0400 (EDT) Received: by mail-we0-f177.google.com with SMTP id u57so642830wes.8 for ; Fri, 12 Sep 2014 05:22:05 -0700 (PDT) Received: from mail-wg0-x234.google.com (mail-wg0-x234.google.com [2a00:1450:400c:c00::234]) by mx.google.com with ESMTPS id qn9si4093694wjc.37.2014.09.12.05.22.04 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 12 Sep 2014 05:22:04 -0700 (PDT) Received: by mail-wg0-f52.google.com with SMTP id x13so631927wgg.11 for ; Fri, 12 Sep 2014 05:22:02 -0700 (PDT) Date: Fri, 12 Sep 2014 08:21:43 -0400 From: Niv Yehezkel Subject: Re: [PATCH] oom: break after selecting process to kill Message-ID: <20140912122143.GA20622@localhost.localdomain> References: <20140911213338.GA4098@localhost.localdomain> <20140912080853.GA12156@dhcp22.suse.cz> <20140912082329.GA12330@localhost.localdomain> <20140912121817.GE12156@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140912121817.GE12156@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: linux-mm@kvack.org, akpm@linux-foundation.org, rientjes@google.com, hannes@cmpxchg.org, oleg@redhat.com On Fri, Sep 12, 2014 at 02:18:17PM +0200, Michal Hocko wrote: > On Fri 12-09-14 04:23:29, Niv Yehezkel wrote: > [...] > > From 1e92f232e9367565d93629b54117b27b9bbfebda Mon Sep 17 00:00:00 2001 > > From: Niv Yehezkel > > Date: Fri, 12 Sep 2014 04:21:48 -0400 > > Subject: [PATCH] break after selecting process to kill > > > > > > Now the justification please ;) > > > Signed-off-by: Niv Yehezkel > > --- > > mm/oom_kill.c | 4 +++- > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > diff --git a/mm/oom_kill.c b/mm/oom_kill.c > > index 1e11df8..3203578 100644 > > --- a/mm/oom_kill.c > > +++ b/mm/oom_kill.c > > @@ -315,7 +315,7 @@ static struct task_struct *select_bad_process(unsigned int *ppoints, > > case OOM_SCAN_SELECT: > > chosen = p; > > chosen_points = ULONG_MAX; > > - /* fall through */ > > + break; > > case OOM_SCAN_CONTINUE: > > continue; > > case OOM_SCAN_ABORT: > > @@ -324,6 +324,8 @@ static struct task_struct *select_bad_process(unsigned int *ppoints, > > case OOM_SCAN_OK: > > break; > > }; > > + if (chosen_points == ULONG_MAX) > > + break; > > points = oom_badness(p, NULL, nodemask, totalpages); > > if (!points || points < chosen_points) > > continue; > > -- > > 1.7.10.4 > > > > > -- > Michal Hocko > SUSE Labs As mentioned earlier, there's no need to keep iterating over all running processes once the process with the highest score has been found. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org