From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: Re: [3/3] 2.6.21-rc7: known regressions (v2) Date: Wed, 25 Apr 2007 20:33:05 -0400 Message-ID: <200704252033.06288.lenb@kernel.org> References: <20070425040605.6d6b4a82.akpm@linux-foundation.org> <1177524532.6401.17.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1177524532.6401.17.camel@localhost.localdomain> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: john stultz Cc: Len Brown , Mikael Pettersson , Ingo Molnar , Linux Kernel Mailing List , Adrian Bunk , linux-pm@lists.linux-foundation.org, Guilherme Schroeder , Andrew Morton , Linus Torvalds , Thomas Gleixner , ak@suse.de List-Id: linux-pm@vger.kernel.org On Wednesday 25 April 2007 14:08, john stultz wrote: > On Wed, 2007-04-25 at 04:06 -0700, Andrew Morton wrote: > > On Mon, 23 Apr 2007 23:49:09 +0200 Adrian Bunk wrote: > > > > > This email lists some known regressions in Linus' tree compared to 2.6.20. > > > > > > If you find your name in the Cc header, you are either submitter of one > > > of the bugs, maintainer of an affectected subsystem or driver, a patch > > > of you caused a breakage or I'm considering you in any other way > > > possibly involved with one or more of these issues. > > > > > > Due to the huge amount of recipients, please trim the Cc when answering. > > > > > > > > > Subject : HPET enabled freeze my machine at boot > > > workaround: clocksource=acpi_pm > > > References : http://lkml.org/lkml/2007/4/19/370 > > > Submitter : Guilherme Schroeder > > > Caused-By : Thomas Gleixner > > > commit 5d8b34fdcb384161552d01ee8f34af5ff11f9684 > > > Handled-By : John Stultz > > > Status : problem is being debugged > > > > > > > > > Subject : acpi_pm clocksource loses time on x86-64 > > > References : http://lkml.org/lkml/2007/4/17/143 > > > Submitter : Mikael Pettersson > > > Handled-By : John Stultz > > > Status : problem is being debugged > > > > > > > > > Subject : suspend to disk hangs (CONFIG_NO_HZ) > > > References : http://lkml.org/lkml/2007/3/25/217 > > > Submitter : Jeff Chua > > > Status : unknown > > > > That's still rather a lot of bustage from the timekeeping changes. Is > > anything really happening here or have we all given up? > > > The ACPI PM one is *really* odd as its the same clocksource driver on > both arches. I had Mikael cut out the clocksource frequency adjustments, > and confirmed both i386 and x86_64 are using the same base freq > (confirmed via printks). If this chipset's PM-timer loses "several minutes per hour" on x86_64, I would expect it to do the same on i386. I can't imagine what the difference could be. Any possibility it is the 24-bit version and we do something funky on wraparound? -Len > It almost seems like when booting x86_64 the ACPI PM counter is running > slowly! > > Len: Have you ever heard of such a thing? It seems quite unlikely... > > > WRT the HPET freeze issue, I'm still digging there. In that case it > appears the HPET isn't counting, so timekeeping just stops. I was > thinking it might be HRT messing w/ the wrong HPET registers, but so far > that hasn't shaken out. > > I'll spend some more time on these today and see if we get any further. > > thanks > -john > > > - > 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/ >