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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
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Subject: Re: [tip:timers/urgent] Revert: Unify CLOCK_MONOTONIC and CLOCK_BOOTTIME
Date: Thu, 26 Apr 2018 08:48:00 +0200
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References: <tip-757d5a9b3052a4eebd029f207f1e1df59bef7b7d@git.kernel.org> <5695751.Ycq0WTIcbj@aspire.rjw.lan> <20180425184140.6b6e524d@vmware.local.home>
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On Thursday, April 26, 2018 12:41:40 AM CEST Steven Rostedt wrote:
> On Wed, 25 Apr 2018 22:57:12 +0200
> "Rafael J. Wysocki" <rjw@rjwysocki.net> wrote:
> 
> > FWIW, I run (64-bit) OpenSUSE 42.3 on the failing machine (Acer Aspire S5) with
> > my own kernel (custom config based on the distro one).
> > 
> > The problem here is that the machine doesn't resume from S2R.  It appears to
> > just hang somewhere around where we return to user space.  However, to trigger
> > the issue it needs to stay in suspend for several minutes (not sure how many
> > exactly).  If it is just back-to-back suspend/resume, it will resume correctly.
> 
> I guess the question that needs to be asked is, have you tried a kernel
> with this commit reverted and it works?

Yes, I have.

> I'd play a bit going back and
> forth between two kernels, one with the commit and one without and no
> other differences, to make sure that is indeed the problem commit.

I've done that.

It is the problem commit.

Thanks,
Rafael