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Date: Tue, 11 Sep 2007 11:25:31 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: "Rafael J. Wysocki" <rjw@...k.pl> Cc: Thomas Gleixner <tglx@...utronix.de>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, john stultz <johnstul@...ibm.com>, Ingo Molnar <mingo@...e.hu>, Len Brown <lenb@...nel.org>, Venkatesh Pallipadi <venkatesh.pallipadi@...el.com> Subject: Re: clockevents: fix resume logic On Tue, 11 Sep 2007 14:09:12 +0200 "Rafael J. Wysocki" <rjw@...k.pl> wrote: > On Tuesday, 11 September 2007 13:22, Andrew Morton wrote: > > On Tue, 11 Sep 2007 13:23:55 +0200 "Rafael J. Wysocki" <rjw@...k.pl> wrote: > > > > > On Tuesday, 11 September 2007 12:31, Andrew Morton wrote: > > > > On Tue, 11 Sep 2007 11:16:04 +0200 Thomas Gleixner <tglx@...utronix.de> wrote: > > > > > > > > > On Tue, 2007-09-11 at 01:35 -0700, Andrew Morton wrote: > > > > > > On Tue, 11 Sep 2007 01:20:05 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote: > > > > > > > > > > > > > On Tue, 11 Sep 2007 09:47:20 +0200 Thomas Gleixner <tglx@...utronix.de> wrote: > > > > > > > > > > > > > > > On Tue, 2007-09-11 at 09:23 +0200, Thomas Gleixner wrote: > > > > > > > > > > I went back to the original patch which I sent to Linus and it matches > > > > > > > > > > 18de5bc4c1f1f1fa5e14f354a7603bd6e9d4e3b6. So all I can think is that there > > > > > > > > > > must have been something else in the tree which I tested which fixed the > > > > > > > > > > bug which 18de5bc4c1f1f1fa5e14f354a7603bd6e9d4e3b6 introduced. argh. > > > > > > > > > > > > > > > > > > > > Can you think what would cause the symptoms which I described? > > > > > > > > > > > > > > > > > > It seems that time is not updated. Timer interrupt not active or some > > > > > > > > > other odd thing. I figure out what's going on when I find a box which > > > > > > > > > exposes the problem. > > > > > > > > > > > > > > 2.6.22-rc6-mm1's git-acpi.patch contains something which fixes this bug. > > > > > > > > > > > > Len's current tree fixes it too. > > > > > > Do you mean this one: > > > > > > http://git.kernel.org/?p=linux/kernel/git/lenb/linux-acpi-2.6.git > > > > Nope. > > > > Here's the algorthm: go to the latest -mm tree and look at the first line > > of broken-out/git-acpi.patch: > > > > GIT f94aac9883f9b02700270cf286577a9bccf98f47 git+ssh://master.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git#test > > > > that gives the URL, the branch and the top-level commit. All the -mm git > > trees have that first line. > > > > > > > > Anyway, I was able to extract all the diffs and generate a patch series. > > The below patch fixes current mainline on the Vaio. > > It evidently assumes cpuidle to be present, which is not in the mainline. Bear in mind that the cpuidle patch fixes resume-from-ram when cpuidle is disabled in config. > It seems to me that the total effect of this one and the hackpatch is that > the C states are not handled any more. hm. dmesg without the cpuidle patch: http://userweb.kernel.org/~akpm/dmesg-bad.txt dmesg with the cpuidle patch: http://userweb.kernel.org/~akpm/dmesg-good.txt difference: http://userweb.kernel.org/~akpm/dmesg-diff.txt there doesn't seem to be a lot of difference in the time handling, except there are large changes in when things happen in the bootup sequence. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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