Robust Mutex Problem

Anton Vorontsov cbouatmailru at gmail.com
Fri Mar 25 20:04:43 UTC 2011


On Fri, Mar 25, 2011 at 08:57:50PM +0100, Arnd Bergmann wrote:
> On Friday 25 March 2011 20:22:06 Pack, Robert wrote:
> 
> >     Any suggestions on how to resolve? Should one expect robust mutex
> > support?
> 
> There was a patch to support for robust futexes on SMP kernel last year,
> from Anton Vorontsov:
> 
> http://lists.infradead.org/pipermail/linux-arm-kernel/2010-June/017374.html
> 
> There was some discussion on this patch, but I think the work
> was never completed to address the concerns.
> 
> Maybe you were running with this patch at an earlier time?

The patch was waiting for Catalin Marinas' "Remove the domain switching on
ARMv6k/v7 CPUs" patch to hit Linus' tree. Now that the patch is in, the
robust mutex support should be OK with the patch above (but a minor change[1]
would be needed to get it into mainline).

Thanks,

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2010-June/017395.html

-- 
Anton Vorontsov
Email: cbouatmailru at gmail.com



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