New F14-arm build os36 - Sugar in sync, device-tree!
buytenh at wantstofly.org
Tue Aug 9 09:59:52 EDT 2011
On Tue, Aug 09, 2011 at 02:49:42PM +0100, Niels de Vos wrote:
> > >> = There is a new schedulear/timer patch from Lennert -- mystery
> > >> minutes-long hangs should be gone for real now.
> > >
> > > Do you have any references like a git-commit or discussion on a
> > > mailinglist for this? I'd like to match this with some other ARM
> > > hardware (non/OLPC) issues I have seen.
> > There's a description of our problem at:
> > http://dev.laptop.org/git/olpc-kernel/commit/?h=arm-3.0&id=b8923ed0809f29e53bd246153ca3a9e9367b4c56
> Nice description! As it's mach-mmp dependent, it's unlikely that I can
> apply this for mx51 based systems. The information in the git-commit is
> clear and I'll try to investigate if 'sporadic hangs' could be caused
> due to missing events. (Which sounds sane, as it might happen when
> the system is under high load.)
Looking at arch/arm/plat-mxc/time.c and its *_set_next_event() functions,
it appears to correctly handle the case where the timeout has already
expired, so it's not likely that mx51 is suffering from the same problem.
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