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| author | Yury Norov <ynorov@caviumnetworks.com> | 2018-06-07 17:10:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 17:34:39 -0700 |
| commit | ca1250bbd4e0b852cafbc94d4d2610171107b252 (patch) | |
| tree | 38d893c0658fb8db474ffe68934db200b412695a /lib/idr.c | |
| parent | 0455c74788fd5aad4399f00e3fbbb7e87450ca58 (diff) | |
| download | op-kernel-dev-ca1250bbd4e0b852cafbc94d4d2610171107b252.zip op-kernel-dev-ca1250bbd4e0b852cafbc94d4d2610171107b252.tar.gz | |
lib/bitmap.c: micro-optimization for __bitmap_complement()
Use BITS_TO_LONGS() macro to avoid calculation of reminder (bits %
BITS_PER_LONG) On ARM64 it saves 5 instruction for function - 16 before
and 11 after.
Link: http://lkml.kernel.org/r/20180411145914.6011-1-ynorov@caviumnetworks.com
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/idr.c')
0 files changed, 0 insertions, 0 deletions
