Messages in this thread | | | Date | Wed, 21 Jan 2009 14:52:46 +0900 | From | Tejun Heo <> | Subject | Re: [PATCH] percpu: add optimized generic percpu accessors |
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Ingo Molnar wrote: > The larger point still remains: the kernel dominantly uses static percpu > variables by a margin of 10 to 1, so we cannot just brush away the static > percpu variables and must concentrate on optimizing that side with > priority. It's nice if the dynamic percpu-alloc side improves as well, of > course.
Well, the infrequent usage of dynamic percpu allocation is in some part due to the poor implementation, so it's sort of chicken and egg problem. I got into this percpu thing because I wanted a percpu reference count which can be dynamically allocated and it sucked.
Thanks.
-- tejun
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