Messages in this thread | | | Subject | Re: [ANNOUNCE] 3.2.9-rt17 | From | Steven Rostedt <> | Date | Thu, 08 Mar 2012 17:27:45 -0500 |
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On Thu, 2012-03-08 at 23:20 +0100, Peter Zijlstra wrote:
> and with rt-mutex having the equal priority lock stealing this reverts > to a plain test-and-set lock. There's only a tiny window in which A can > actually get the lock and that is hampered by B's cpu owning the > cacheline in exclusive mode. > > I simply cannot see guaranteed progress here.
This can be easily fixed by not having the lateral steal when a lock has a priority.
-- Steve
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