Messages in this thread | | | Date | Fri, 27 May 2011 21:03:31 -0700 | From | Yinghai Lu <> | Subject | Re: [tip:core/rcu] Revert "rcu: Decrease memory-barrier usage based on semi-formal proof" |
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On 05/27/2011 06:04 PM, Paul E. McKenney wrote: > > And, after having repeatedly shot myself in the foot trying to make > an all-singing all-dancing RCU grace-period latency measurement tool, > I fell back to simply measuring the RCU grace-period latency during > the time that memory_dev_init() is running. This assumes that the > grace periods are started using synchronize_rcu() -- if they are instead > being started using call_rcu(), I can adapt to that as well. > [ 31.635137] cpu_dev_init done [ 31.635320] Starting RCU latency diagnostics [ 71.605662] Ending RCU latency diagnostics [ 71.605924] memory_dev_init done
Thanks
Yinghai
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