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Groups > linux.kernel > #1702661
| From | Pratyush Anand <panand@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: rcu_sched stall while waiting in csd_lock_wait() |
| Date | 2017-08-03 06:00 +0200 |
| Message-ID | <uafsJ-2FW-1@gated-at.bofh.it> (permalink) |
| References | <u9SFQ-4t7-7@gated-at.bofh.it> <u9X2N-7mD-19@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Peter, On Wednesday 02 August 2017 01:44 PM, Peter Zijlstra wrote: > On Wed, Aug 02, 2017 at 09:01:19AM +0530, Pratyush Anand wrote: >> Hi, >> >> I am observing following rcu_sched stall while executing `perf record -a -- >> sleep 1` with one of the arm64 platform. It looks like that stalled cpu was >> waiting in csd_lock_wait() from where it never came out,and so the stall. >> Any help/pointer for further debugging would be very helpful. Problem also >> reproduced with 4.13.0-rc3. > > I'm sitting on this patch: > > https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?h=locking/core&id=15377ef4fe0c86eb7fa1099575b2e86357d99e42 > > please give that a spin. Thanks for the pointer. Tried, but it did not help. -- Regards Pratyush
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rcu_sched stall while waiting in csd_lock_wait() Pratyush Anand <panand@redhat.com> - 2017-08-02 05:40 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Will Deacon <will.deacon@arm.com> - 2017-08-02 10:10 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Marc Zyngier <marc.zyngier@arm.com> - 2017-08-02 10:50 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Pratyush Anand <panand@redhat.com> - 2017-08-03 06:00 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Pratyush Anand <panand@redhat.com> - 2017-08-03 06:00 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Marc Zyngier <marc.zyngier@arm.com> - 2017-08-03 09:20 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-08-03 15:00 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Peter Zijlstra <peterz@infradead.org> - 2017-08-02 10:20 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Pratyush Anand <panand@redhat.com> - 2017-08-03 06:00 +0200
Re: rcu_sched stall while waiting in csd_lock_wait() Peter Zijlstra <peterz@infradead.org> - 2017-08-03 10:40 +0200
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