Messages in this thread | | | Date | Thu, 01 Nov 2007 14:25:51 -0700 (PDT) | Subject | Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead | From | David Miller <> |
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From: Christoph Lameter <clameter@sgi.com> Date: Thu, 1 Nov 2007 06:01:14 -0700 (PDT)
> On Thu, 1 Nov 2007, David Miller wrote: > > > IA64 seems to use it universally for every __get_cpu_var() > > access, so maybe it works out somehow :-))) > > IA64 does not do that. It addds the local cpu offset > > #define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, > __ia64_per_cpu_var(local_per_cpu_offset))) > #define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, > __ia64_per_cpu_var(local_per_cpu_offset)))
Oh I see, it's the offset itself which is accessed at the fixed virtual address slot. - 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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