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Groups > linux.kernel > #1189960
| From | Don Zickus <dzickus@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] soft lockup: kill realtime threads before panic |
| Date | 2015-07-22 16:00 +0200 |
| Message-ID | <pP2IV-bi-9@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <pOTYZ-4EJ-1@gated-at.bofh.it> <pOUBI-5Dv-17@gated-at.bofh.it> <pOV4J-6b6-5@gated-at.bofh.it> <pOVR8-7jR-3@gated-at.bofh.it> <pOWNc-d3-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Jul 22, 2015 at 09:35:28AM +0200, Mike Galbraith wrote: > On Tue, 2015-07-21 at 23:33 -0700, Jörn Engel wrote: > > > One could argue that killing the realtime thread is even better than > > panic, as things can restart with a blank slate even faster. But the > > real benefit is that we get better debug data for the failing component. > > If we had a kernel bug, the backtrace would usually be sufficient to > > point fingers. With a bonkers realtime thread, not so much. > > If userspace wants a watchdog, it should train a userspace dog, not turn > the kernel watchdog into a userspace attack dog. I agree. The spirit of the watchdog was detection and panic (if configured that way). I don't think adding policy like this works well in the long run. Cheers, Don -- 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] soft lockup: kill realtime threads before panic Jörn Engel <joern@purestorage.com> - 2015-07-22 07:20 +0200
Re: [PATCH] soft lockup: kill realtime threads before panic Mike Galbraith <umgwanakikbuti@gmail.com> - 2015-07-22 07:50 +0200
Re: [PATCH] soft lockup: kill realtime threads before panic Jörn Engel <joern@purestorage.com> - 2015-07-22 08:40 +0200
Re: [PATCH] soft lockup: kill realtime threads before panic Mike Galbraith <umgwanakikbuti@gmail.com> - 2015-07-22 09:40 +0200
Re: [PATCH] soft lockup: kill realtime threads before panic Don Zickus <dzickus@redhat.com> - 2015-07-22 16:00 +0200
Re: [PATCH] soft lockup: kill realtime threads before panic Jörn Engel <joern@purestorage.com> - 2015-07-22 18:40 +0200
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