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Groups > linux.kernel > #1271079
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: local64_cmpxchg() in arc_perf_event_update() |
| Date | 2015-11-17 12:10 +0100 |
| Message-ID | <qvMj7-4ds-13@gated-at.bofh.it> (permalink) |
| References | <qvKAG-355-29@gated-at.bofh.it> <qvKAG-355-27@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Nov 17, 2015 at 09:14:59AM +0000, Vineet Gupta wrote: > Let's check with Peter as I'm not sure how exactly the read call will > nest for same counter on same core ? Various possible ways, but the easiest is userspace doing a sys_read() on the counter while the NMI happens. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: local64_cmpxchg() in arc_perf_event_update() Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 10:20 +0100
Re: local64_cmpxchg() in arc_perf_event_update() Peter Zijlstra <peterz@infradead.org> - 2015-11-17 12:10 +0100
Re: local64_cmpxchg() in arc_perf_event_update() Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 12:30 +0100
Re: local64_cmpxchg() in arc_perf_event_update() Peter Zijlstra <peterz@infradead.org> - 2015-11-17 13:30 +0100
Re: local64_cmpxchg() in arc_perf_event_update() Peter Zijlstra <peterz@infradead.org> - 2015-11-17 13:30 +0100
NMI for ARC Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 14:00 +0100
Re: NMI for ARC Peter Zijlstra <peterz@infradead.org> - 2015-11-17 14:20 +0100
Re: local64_cmpxchg() in arc_perf_event_update() Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 14:30 +0100
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