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Groups > linux.kernel > #1440457
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC] perf: ref-cycle useless with watchdog changes |
| Date | 2016-07-11 12:40 +0200 |
| Message-ID | <rTGN5-5On-41@gated-at.bofh.it> (permalink) |
| References | <rTrXH-4k1-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Sun, Jul 10, 2016 at 11:48:11AM -0700, Stephane Eranian wrote: > So we either redirect ref-cycles towards 0x013c > (cpu_clk_unhalted:xlck) or another event maybe Another solution is us introducing (another) fake event, say 0x0400, which will have a constrained mask of: 0x0F | (6 << 32) and varies in actual encoding depending on which counter it lands on. That way we have more flexibility in scheduling the NMI watchdog, and its exact period isn't _that_ important; although we could obviously also fix up some of that if we wanted.
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[RFC] perf: ref-cycle useless with watchdog changes Stephane Eranian <eranian@google.com> - 2016-07-10 20:50 +0200
Re: [RFC] perf: ref-cycle useless with watchdog changes Peter Zijlstra <peterz@infradead.org> - 2016-07-11 12:40 +0200
Re: [RFC] perf: ref-cycle useless with watchdog changes Stephane Eranian <eranian@google.com> - 2016-07-12 10:30 +0200
Re: [RFC] perf: ref-cycle useless with watchdog changes Peter Zijlstra <peterz@infradead.org> - 2016-07-12 14:10 +0200
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