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authorYury Norov <ynorov@caviumnetworks.com>2018-06-07 17:10:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-07 17:34:39 -0700
commitca1250bbd4e0b852cafbc94d4d2610171107b252 (patch)
tree38d893c0658fb8db474ffe68934db200b412695a /lib/idr.c
parent0455c74788fd5aad4399f00e3fbbb7e87450ca58 (diff)
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')
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