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Groups > linux.kernel > #1359458

Re: RFC on fixing mutex spinning on owner

From Greg Kroah-Hartman <greg@kroah.com>
Newsgroups linux.kernel
Subject Re: RFC on fixing mutex spinning on owner
Date 2016-03-17 00:40 +0100
Message-ID <rdtcK-7ER-13@gated-at.bofh.it> (permalink)
References <rdt34-7Be-37@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Mar 16, 2016 at 04:22:17PM -0700, Joel Fernandes wrote:
> Hi,
> 
> On a fairly recent kernel and android userspace, I am seeing that with
> i915 driver is in a spin loop waiting for mutex owner to release it
> (mutex_spin_on_owner).

Why not provide a backtrace to the drm and i915 developers so that they
can work on this?  The mailing lists you sent this to can't do much
about this, sorry...

thanks,

greg k-h

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Thread

RFC on fixing mutex spinning on owner Joel Fernandes <agnel.joel@gmail.com> - 2016-03-17 00:30 +0100
  Re: RFC on fixing mutex spinning on owner Greg Kroah-Hartman <greg@kroah.com> - 2016-03-17 00:40 +0100
    Re: RFC on fixing mutex spinning on owner Joel Fernandes <agnel.joel@gmail.com> - 2016-03-17 00:40 +0100
      Re: RFC on fixing mutex spinning on owner Steven Rostedt <rostedt@goodmis.org> - 2016-03-17 03:20 +0100
        Re: RFC on fixing mutex spinning on owner Joel Fernandes <agnel.joel@gmail.com> - 2016-03-17 06:40 +0100
          Re: RFC on fixing mutex spinning on owner Steven Rostedt <rostedt@goodmis.org> - 2016-03-17 13:10 +0100
        Re: RFC on fixing mutex spinning on owner Peter Zijlstra <peterz@infradead.org> - 2016-03-17 08:40 +0100
          Re: RFC on fixing mutex spinning on owner Nicholas Mc Guire <der.herr@hofr.at> - 2016-03-17 10:10 +0100
            Re: RFC on fixing mutex spinning on owner Peter Zijlstra <peterz@infradead.org> - 2016-03-17 11:20 +0100
              Re: RFC on fixing mutex spinning on owner Thomas Gleixner <tglx@linutronix.de> - 2016-03-17 12:20 +0100
                Re: RFC on fixing mutex spinning on owner Steven Rostedt <rostedt@goodmis.org> - 2016-03-17 13:10 +0100
                Re: RFC on fixing mutex spinning on owner Peter Zijlstra <peterz@infradead.org> - 2016-03-17 13:20 +0100
                Re: RFC on fixing mutex spinning on owner Thomas Gleixner <tglx@linutronix.de> - 2016-03-17 14:40 +0100

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