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authorEric Dumazet <dada1@cosmosbay.com>2006-03-25 03:08:19 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:23:01 -0800
commitd74beb9f33a5f16d2965f11b275e401f225c949d (patch)
tree48f851753ebe9c9c8dd701dcdd0c5e1d7c629579 /.gitignore
parent34f361ade2fb4a869f6a7714d01c04ce4cfa75d9 (diff)
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[PATCH] Use unsigned int types for a faster bsearch
This patch avoids arithmetic on 'signed' types that are slower than 'unsigned'. This saves space and cpu cycles. size of kernel/sys.o before the patch (gcc-3.4.5) text data bss dec hex filename 10924 252 4 11180 2bac kernel/sys.o size of kernel/sys.o after the patch text data bss dec hex filename 10903 252 4 11159 2b97 kernel/sys.o I noticed that gcc-4.1.0 (from Fedora Core 5) even uses idiv instruction for (a+b)/2 if a and b are signed. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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