Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754083AbbGFHme (ORCPT ); Mon, 6 Jul 2015 03:42:34 -0400 Received: from www.linutronix.de ([62.245.132.108]:53352 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750967AbbGFHmb (ORCPT ); Mon, 6 Jul 2015 03:42:31 -0400 Date: Mon, 6 Jul 2015 09:42:18 +0200 (CEST) From: Thomas Gleixner To: Adrian Hunter cc: Andi Kleen , Andy Lutomirski , LKML , Linus Torvalds , X86 ML , "H. Peter Anvin" , Len Brown , George Spelvin , Ingo Molnar , a.p.zijlstra@chello.nl, arjan@infradead.org, bp@alien8.de, penberg@iki.fi, akpm@linux-foundation.org Subject: Re: [PATCH RFC] x86, tsc: Allow for high latency in quick_pit_calibrate() In-Reply-To: <559A24DA.7040004@intel.com> Message-ID: References: <20150602194350.GN1187@tassilo.jf.intel.com> <20150602202037.GO1187@tassilo.jf.intel.com> <20150602233820.GP1187@tassilo.jf.intel.com> <20150603003938.GQ1187@tassilo.jf.intel.com> <20150603033013.GR1187@tassilo.jf.intel.com> <556EB717.9070607@intel.com> <5587EFC5.5010303@intel.com> <559A24DA.7040004@intel.com> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1393 Lines: 37 On Mon, 6 Jul 2015, Adrian Hunter wrote: > On 22/06/15 16:14, Thomas Gleixner wrote: > > On Mon, 22 Jun 2015, Adrian Hunter wrote: > >> On 03/06/15 19:23, Thomas Gleixner wrote: > >>> On Wed, 3 Jun 2015, Adrian Hunter wrote: > >>> > >>>> On 03/06/15 06:30, Andi Kleen wrote: > >>>>>> Then the changelog should say that I think. The current text says > >>>>>> "Fast TSC calibration will always fail", which, to me, suggests that > >>>>>> either the slow calibration will work or that the changelog message > >>>>>> should be changed. > >>>>> > >>>>> Ok. No, the slow calibration works I believe. > >>>> > >>>> Yeah, so the (only?) downside is the 50ms wasted on Fast TSC > >>>> calibration. What about this? > >>> > >>> I'm certainly happy to apply this one. > >> > >> George Spelvin began investigating improving quick_pit_calibrate() but Ingo > >> anyway suggested this patch as the first, so can this be applied? > > > > Oh, yes. I simply forgot to pick it up. Thanks for the reminder. > > Sorry to bother you, but I don't still don't see the patch anywhere? That patch seems to be highly merge resistant. It's queued now. Thanks, tglx -- 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/