Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751578AbaBKMO1 (ORCPT ); Tue, 11 Feb 2014 07:14:27 -0500 Received: from mx1.redhat.com ([209.132.183.28]:62439 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751014AbaBKMOZ (ORCPT ); Tue, 11 Feb 2014 07:14:25 -0500 Date: Tue, 11 Feb 2014 10:14:11 -0200 From: Arnaldo Carvalho de Melo To: Peter Hurley Cc: David Ahern , Stephane Eranian , LKML , Peter Zijlstra , "mingo@elte.hu" , Jiri Olsa , Eric Dumazet Subject: Re: [BUG] perf top: --stdio causes continuous refresh Message-ID: <20140211121411.GA4368@infradead.org> References: <20140206135627.GA26955@infradead.org> <20140206140705.GB26955@infradead.org> <20140206140936.GC26955@infradead.org> <52F3CAE3.7060007@gmail.com> <20140210210358.GD3202@infradead.org> <52F987CE.7010300@hurleysoftware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <52F987CE.7010300@hurleysoftware.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.20 (2009-12-10) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Mon, Feb 10, 2014 at 09:15:42PM -0500, Peter Hurley escreveu: > >Bisected it down to: > >eb3e4668bd9e0bbda592e830e889f137e44ec9e4 is the first bad commit > >Author: Peter Hurley > >Date: Mon Dec 2 14:24:42 2013 -0500 > > n_tty: Un-inline slow-path n_tty_receive_char() > >In a hurry now, will continue later, trying to understand what is the problem > >introduced by the above cset... > >Need to revert just this one to confirm that it is the culprit, etc. > Thanks for the report and bisect. Seems unlikely this commit is the > cause, but very likely to be some change I made since 3.13, since > I can repro on 3.14-rc1 but not on 3.13.2 -stable. I can also repro > this on 3.12 + the patch stack from me for 3.13 and 3.14. > I'm looking into this now. I just reverted just this cset and the problem persisted, so I'll wait for you on this one :-) - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/