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authorAndré Goddard Rosa <andre.goddard@gmail.com>2009-12-14 18:01:01 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-15 08:53:32 -0800
commit922ac25c9f4b5dc4c48ff12bfd14a98bdeb6ff0a (patch)
tree8c467994a89e65b231a3905a5e9d309ff1833139 /net/sctp/inqueue.c
parentc5484d7c0a533de6198cb474097e33b174f9c565 (diff)
vsprintf: reuse almost identical simple_strtoulX() functions
The difference between simple_strtoul() and simple_strtoull() is just the size of the variable used to keep track of the sum of characters converted to numbers: unsigned long simple_strtoul() {...} unsigned long long simple_strtoull(){...} Both are same size on my Core 2/gcc 4.4.1. Overflow condition is not checked on both functions, so an extremely large string can break these functions so that they don't even notice it. As we do not care for overflowing on these functions, always keep the sum using the larger variable around (unsigned long long) on simple_strtoull() and cast it to (unsigned long) on simple_strtoul(), which then becomes just a wrapper around simple_strtoull(). Code size decreases by 304 bytes: text data bss dec hex filename 15534 0 8 15542 3cb6 vsprintf.o (ex lib/lib.a-BEFORE) 15230 0 8 15238 3b86 vsprintf.o (ex lib/lib.a-AFTER) Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/sctp/inqueue.c')
0 files changed, 0 insertions, 0 deletions