Messages in this thread | | | Date | Tue, 24 May 2016 11:04:55 +0200 | From | Peter Zijlstra <> | Subject | Re: Bisection: Lost wakeups from b5179ac70de8 |
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On Mon, May 23, 2016 at 07:04:10AM -0700, Paul E. McKenney wrote: > Hello, Peter, > > Current mainline doesn't do well with RCU torture testing, and the > symptom once again looks like lost wakeups. Thankfully, this time each > run takes only about an hour, and the false-positive/-negative rate > is negligible. This means that for the first time ever, "git bisect" > actually did something useful for me. The first bad commit is: > > b5179ac70de8 ("sched/fair: Prepare to fix fairness problems on migration"). >
Yeah, we have a patch for that.. I'll go writes a Changelog for it and put it to sched/urgent.
See lkml.kernel.org/r/20160523091907.GD15728@worktop.ger.corp.intel.com
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