Messages in this thread | | | Date | Sun, 8 Jul 2012 11:33:14 +0900 | Subject | Re: [PATCH] mm: don't invoke __alloc_pages_direct_compact when order 0 | From | JoonSoo Kim <> |
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2012/7/7 David Rientjes <rientjes@google.com>: > On Sat, 7 Jul 2012, Joonsoo Kim wrote: > >> __alloc_pages_direct_compact has many arguments so invoking it is very costly. >> And in almost invoking case, order is 0, so return immediately. >> > > If "zero cost" is "very costly", then this might make sense. > > __alloc_pages_direct_compact() is inlined by gcc.
In my kernel image, __alloc_pages_direct_compact() is not inlined by gcc. So I send this patch. But, currently I think it is not useful, so drop it.
Thanks for comments.
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