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Groups > linux.kernel > #1271143
| From | Vineet Gupta <Vineet.Gupta1@synopsys.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier |
| Date | 2015-11-17 13:40 +0100 |
| Message-ID | <qvNIe-50X-5@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <qvMsO-4ho-5@gated-at.bofh.it> <qvMsO-4ho-3@gated-at.bofh.it> <qvMCt-4n1-13@gated-at.bofh.it> <qvMMa-4qX-7@gated-at.bofh.it> <qvNyy-4XK-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tuesday 17 November 2015 05:52 PM, Peter Zijlstra wrote: >> > BTW since we are on the topic we have this loop in stack unwinder which can >> > potentially cause RCU stalls, actual lockups etc. I was planning to add the >> > following - does that seem fine to you. > Worries me more than anything. How could you get stuck in there? No we not getting stuck in there - but this has potential to - if say unwind info were corrupt (not seen that ever though). The old code won't even respond to say a Ctrl+C if it were stuck ! Plus the reschedule there will keeps sched happy when say unraveling deep stack frames with perf ? -- 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: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 12:20 +0100
Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Peter Zijlstra <peterz@infradead.org> - 2015-11-17 12:30 +0100
Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 12:40 +0100
Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Peter Zijlstra <peterz@infradead.org> - 2015-11-17 13:30 +0100
Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 13:40 +0100
Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Peter Zijlstra <peterz@infradead.org> - 2015-11-17 13:50 +0100
Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Vineet Gupta <Vineet.Gupta1@synopsys.com> - 2015-11-17 14:40 +0100
Re: [PATCH v2 18/19] ARC: [plat-eznps] replace sync with proper cpu barrier Peter Zijlstra <peterz@infradead.org> - 2015-11-17 15:00 +0100
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