Re: [tip:sched/urgent] x86, tsc: Fix a preemption leak inrestore_sched_clock_state()

[Ingo Molnar]

* Nico Schottelius <nico-linux-20100709@xxxxxxxxxxxxxxx> wrote:

> Good morning,
> 
> tip-bot for Peter Zijlstra [Sat, Sep 11, 2010 at 07:49:07AM +0000]:
> > Commit-ID:  55496c896b8a695140045099d4e0175cf09d4eae
> > Gitweb:     http://git.kernel.org/tip/55496c896b8a695140045099d4e0175cf09d4eae
> > Author:     Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> > AuthorDate: Fri, 10 Sep 2010 22:32:53 +0200
> > Committer:  Ingo Molnar <mingo@xxxxxxx>
> > CommitDate: Sat, 11 Sep 2010 09:47:07 +0200
> > 
> > x86, tsc: Fix a preemption leak in restore_sched_clock_state()
> 
> running 2.6.36-rc3-00464-g84e1d83 now, which includes that fix.
> 
> So far no resume issues, but the backlight does not power on again,
> if the lid is opened.

That's probably unrelated.

> Manually triggering display backlight increase (via fn-home) changes 
> it to 100% though.
> 
> I've not seen that behaviour for a very long time and never on the 
> X201. It has been an issue on the X200, which means probably around 
> 2.6.30.

Might make sense to bisect it ... as long as you remember to do this at 
every bisection step that has the hung-suspend bug:

  git cherry-pick 55496c896b8a695140045099d4e0175cf09d4eae

Thanks,

	Ingo
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