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| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2015-04-16 02:16:15 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-16 02:35:22 +0300 |
| commit | 495819ead5ad02174208994ca610852a7791a2f2 (patch) | |
| tree | 3e1c75d7ceefac98519dfae8c181e9b1712bc0f6 /CREDITS | |
| parent | 1ec7cfb13acb8047ae5baafb43d2cd6b64ac85b9 (diff) | |
| download | linux-495819ead5ad02174208994ca610852a7791a2f2.tar.xz | |
zsmalloc: micro-optimize zs_object_copy()
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>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'CREDITS')
0 files changed, 0 insertions, 0 deletions