| Date | Mon, 23 Apr 2018 10:53:47 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH tip/core/rcu 06/22] rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs() |
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On Sun, Apr 22, 2018 at 07:32:11PM -0700, Paul E. McKenney wrote: > Commit e31d28b6ab8f ("trace: Eliminate cond_resched_rcu_qs() in favor > of cond_resched()") substituted cond_resched() for the earlier call > to cond_resched_rcu_qs(). However, the new-age cond_resched() does > not do anything to help RCU-tasks grace periods because (1) RCU-tasks > is only enabled when CONFIG_PREEMPT=y and (2) cond_resched() is a > complete no-op when preemption is enabled. This situation results > in hangs when running the trace benchmarks.
But a few patches earlier you tried to address that..
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