Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1489369
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [tip:sched/core] sched/core: Avoid _cond_resched() for PREEMPT=y |
| Date | 2016-09-22 20:50 +0200 |
| Message-ID | <skhei-1xN-35@gated-at.bofh.it> (permalink) |
| References | <skgUV-1qI-13@gated-at.bofh.it> <skgUV-1qI-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Sep 22, 2016 at 02:25:01PM -0400, Mikulas Patocka wrote:
> I've found a document that says that cond_resched() is needed on
> preemptible kernels to mark RCU quiescent states:
>
> https://lwn.net/Articles/603252/
>
> Paul, is cond_resched() still needed on current RCU implementation? Or not?
No, we ripped that out. See 4a81e8328d37 ("rcu: Reduce overhead of
cond_resched() checks for RCU")
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Re: [tip:sched/core] sched/core: Avoid _cond_resched() for PREEMPT=y Mikulas Patocka <mpatocka@redhat.com> - 2016-09-22 20:30 +0200
Re: [tip:sched/core] sched/core: Avoid _cond_resched() for PREEMPT=y "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-09-22 20:40 +0200
Re: [tip:sched/core] sched/core: Avoid _cond_resched() for PREEMPT=y Peter Zijlstra <peterz@infradead.org> - 2016-09-22 20:50 +0200
Re: [tip:sched/core] sched/core: Avoid _cond_resched() for PREEMPT=y "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-09-22 22:30 +0200
Re: [tip:sched/core] sched/core: Avoid _cond_resched() for PREEMPT=y Peter Zijlstra <peterz@infradead.org> - 2016-09-23 10:50 +0200
csiph-web