From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757393AbZA2J6u (ORCPT ); Thu, 29 Jan 2009 04:58:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753096AbZA2J6m (ORCPT ); Thu, 29 Jan 2009 04:58:42 -0500 Received: from casper.infradead.org ([85.118.1.10]:47612 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751302AbZA2J6l (ORCPT ); Thu, 29 Jan 2009 04:58:41 -0500 Subject: Re: [patch-rt 4/4] sched: mark SCHED_HRTICK broken From: Peter Zijlstra To: Thomas Gleixner Cc: LKML , Steven Rostedt , Ingo Molnar , Carsten Emde In-Reply-To: <20090128212709.371517363@linutronix.de> References: <20090128211912.300823284@linutronix.de> <20090128212709.371517363@linutronix.de> Content-Type: text/plain Date: Thu, 29 Jan 2009 10:58:28 +0100 Message-Id: <1233223108.4495.0.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.24.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2009-01-28 at 21:29 +0000, Thomas Gleixner wrote: > plain text document attachment > (do-not-configure-sched-hrtick-since-it-is-currently-broken.patch) > SCHED_HRTICK is broken and not yet fixed in mainline. WTF is it still > enabled in -rt ? It got fixed in mainline, but past .26. That said, we still disabled in in mainline because of performance issues. > Suggested-by: Peter Zijlstra > Tested-by: Carsten Emde > Signed-off-by: Thomas Gleixner > --- > kernel/Kconfig.hz | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > Index: linux-2.6.26/kernel/Kconfig.hz > =================================================================== > --- linux-2.6.26.orig/kernel/Kconfig.hz > +++ linux-2.6.26/kernel/Kconfig.hz > @@ -55,4 +55,4 @@ config HZ > default 1000 if HZ_1000 > > config SCHED_HRTICK > - def_bool HIGH_RES_TIMERS && X86 > + def_bool HIGH_RES_TIMERS && X86 && BROKEN >