Messages in this thread | | | Date | Thu, 26 Mar 2015 00:07:50 +0900 | From | Minchan Kim <> | Subject | Re: [PATCH 2/2] zsmalloc: micro-optimize zs_object_copy() |
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On Wed, Mar 25, 2015 at 12:24:47AM +0900, Sergey Senozhatsky wrote: > A micro-optimization. Avoid additional branching and reduce > (a bit) registry pressure (f.e. s_off += size; d_off += size; > may be calculated twise: first for >= PAGE_SIZE check and later > for offset update in "else" clause). > > /scripts/bloat-o-meter shows some improvement > > add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-10 (-10) > function old new delta > zs_object_copy 550 540 -10 > > Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Thanks.
-- Kind regards, Minchan Kim
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