Re: [PATCH] kstat_this_cpu in terms of __get_cpu_var and use it

From: Linus Torvalds (torvalds@osdl.org)
Date: Thu Jul 03 2003 - 21:24:21 EST

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On Fri, 4 Jul 2003, Rusty Russell wrote:
>
> kstat_this_cpu() is defined in terms of per_cpu instead of __get_cpu_var.
> This patch changes that, and uses it where appropriate.

This makes some things much slower, since we'll re-compute the cpu number
over and over and over again.

This per-cpu'ification has to stop if it just makes code slower.

Linus

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