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Groups > linux.kernel > #1533426
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` |
| Date | 2016-11-30 17:40 +0100 |
| Message-ID | <sJg5j-8ux-9@gated-at.bofh.it> (permalink) |
| References | (5 earlier) <sJajf-4SL-21@gated-at.bofh.it> <sJb5D-5oB-7@gated-at.bofh.it> <sJbIl-5Bx-15@gated-at.bofh.it> <sJcXL-6zu-1@gated-at.bofh.it> <sJedc-7iT-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Nov 30, 2016 at 06:29:55AM -0800, Paul E. McKenney wrote: > We can, and you are correct that cond_resched() does not unconditionally > supply RCU quiescent states, and never has. Last time I tried to add > cond_resched_rcu_qs() semantics to cond_resched(), I got told "no", > but perhaps it is time to try again. Well, you got told: "ARRGH my benchmark goes all regress", or something along those lines. Didn't we recently dig out those commits for some reason or other? Finding out what benchmark that was and running it against this patch would make sense. Also, I seem to have missed, why are we going through this again?
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Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Donald Buczek <buczek@molgen.mpg.de> - 2016-11-27 10:20 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Michal Hocko <mhocko@kernel.org> - 2016-11-28 12:10 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Paul Menzel <pmenzel@molgen.mpg.de> - 2016-11-28 13:30 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Donald Buczek <buczek@molgen.mpg.de> - 2016-11-30 11:30 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Michal Hocko <mhocko@kernel.org> - 2016-11-30 12:20 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Donald Buczek <buczek@molgen.mpg.de> - 2016-11-30 12:50 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Donald Buczek <buczek@molgen.mpg.de> - 2016-12-02 10:20 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Donald Buczek <buczek@molgen.mpg.de> - 2016-12-06 09:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 13:00 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Paul Menzel <pmenzel@molgen.mpg.de> - 2016-11-30 13:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 15:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 13:00 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Michal Hocko <mhocko@kernel.org> - 2016-11-30 14:20 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 15:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Peter Zijlstra <peterz@infradead.org> - 2016-11-30 17:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Michal Hocko <mhocko@kernel.org> - 2016-11-30 18:10 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 18:30 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Michal Hocko <mhocko@kernel.org> - 2016-11-30 18:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Peter Zijlstra <peterz@infradead.org> - 2016-11-30 19:00 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 22:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Peter Zijlstra <peterz@infradead.org> - 2016-12-01 06:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-01 13:50 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Peter Zijlstra <peterz@infradead.org> - 2016-12-01 17:40 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-01 18:00 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Peter Zijlstra <peterz@infradead.org> - 2016-12-01 19:20 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-01 19:50 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` Peter Zijlstra <peterz@infradead.org> - 2016-12-01 20:00 +0100
Re: INFO: rcu_sched detected stalls on CPUs/tasks with `kswapd` and `mem_cgroup_shrink_node` "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-11-30 18:10 +0100
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