Messages in this thread | | | Subject | Re: [PATCH 2/2] x86: introduce NMI_AUTO as nmi_watchdog option | From | Valdis.Kletnieks@vt ... | Date | Wed, 04 Nov 2009 07:33:17 -0500 |
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On Wed, 04 Nov 2009 12:46:30 +0100, Ingo Molnar said: > What i'd like to see for the NMI watchdog is much more ambitious than > this: the use of perf events to run a periodic NMI callback. > > The NMI watchdog would cause the creation of a per-cpu perf_event > structure (in-kernel). All x86 CPUs that have perf event support (the > majority of them) will thus be able to have an NMI watchdog using a > nice, generic piece of code and we'd be able to phase out the open-coded > NMI watchdog code.
What happens on older/smaller x86 CPUs that don't have any native support for perf events? [unhandled content-type:application/pgp-signature] | |