Messages in this thread | | | Date | Wed, 16 Apr 2014 19:28:10 +0900 | From | Dongsheng Yang <> | Subject | Re: [PATCH 0/8] perf sched: Add trace event for sched wait. |
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On 04/15/2014 10:54 PM, Peter Zijlstra wrote: > On Tue, Apr 15, 2014 at 09:32:49PM +0900, Dongsheng Yang wrote: >> But about 3, we have no trace event for it. > We do, sched_switch() includes the previous task state. Also there's > tons more than a waitqueue you can get stuck in. Okey, prev_state is designed to trace No. 3 situation, but it seems not working well now from my test result. I will look into it and dig the reason out. Thanx for your help. > . >
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