Re: [PATCH 2/2] zsmalloc: micro-optimize zs_object_copy()

[Minchan Kim]

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@xxxxxxxxx>

Acked-by: Minchan Kim <minchan@xxxxxxxxxx>

Thanks.

-- 
Kind regards,
Minchan Kim
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