Messages in this thread | | | Date | Fri, 31 Jan 2014 21:08:25 +0100 | From | Peter Zijlstra <> | Subject | Re: [RFC][PATCH v2 5/5] mutex: Give spinners a chance to spin_on_owner if need_resched() triggered while queued |
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On Fri, Jan 31, 2014 at 12:01:37PM -0800, Jason Low wrote: > On Fri, Jan 31, 2014 at 6:09 AM, Peter Zijlstra <peterz@infradead.org> wrote: > > > I've downloaded AIM7 from sf.net and I hope I'm running it with 100+ > > loads but I'm not entirely sure I got this thing right, its not really > > making progress with or without patch :/ > > Ingo's program http://lkml.org/lkml/2006/1/8/50 using the V option may > be able to generate similar mutex contention. > > Currently still getting soft lockups with the updated version.
Bugger.. ok clearly I need to think harder still. I'm fairly sure this cancelation can work though, just seems tricky to get right :-)
I'll give that proglet from Ingo a go, although that might be Monday ere I get to it.
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