Messages in this thread | | | Date | Fri, 22 Aug 2008 07:00:54 -0700 | From | Arjan van de Ven <> | Subject | Re: PATCH] debug: add notifier chain debugging |
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On Tue, 19 Aug 2008 21:09:32 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:
> > If we remove the first two checks then surely we can afford to add the > remaining check unconditionally and lose the new config option and its > ifdef. >
Andi told me that this notifier is a hotpath for kprobes (systemtap) use models; at which point making this a config option makes sort of sense to get the last bit of performance out of that. Personally I would always want this option on for anything I run, and I suspect (enterprise) distros will just always turn it on as well since it's a good sanity check at low cost.
I'd be happy to lose the config (I think we have way too many unneeded ones of those already); I'll make a patch.
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