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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2011-10-31 17:12:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-31 17:30:56 -0700 |
| commit | 1dff46d6987484eaa31f2fb1425216ba06418be3 (patch) | |
| tree | 421e53d64a066b1f756156bb1d37154c0a5eab6a /lib/kstrtox.h | |
| parent | b3c49c05b737887443c894c66635ae68dcdf0027 (diff) | |
| download | lwn-1dff46d6987484eaa31f2fb1425216ba06418be3.tar.gz lwn-1dff46d6987484eaa31f2fb1425216ba06418be3.zip | |
lib/kstrtox: common code between kstrto*() and simple_strto*() functions
Currently termination logic (\0 or \n\0) is hardcoded in _kstrtoull(),
avoid that for code reuse between kstrto*() and simple_strtoull().
Essentially, make them different only in termination logic.
simple_strtoull() (and scanf(), BTW) ignores integer overflow, that's a
bug we currently don't have guts to fix, making KSTRTOX_OVERFLOW hack
necessary.
Almost forgot: patch shrinks code size by about ~80 bytes on x86_64.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/kstrtox.h')
| -rw-r--r-- | lib/kstrtox.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/kstrtox.h b/lib/kstrtox.h new file mode 100644 index 000000000000..f13eeeaf441d --- /dev/null +++ b/lib/kstrtox.h @@ -0,0 +1,8 @@ +#ifndef _LIB_KSTRTOX_H +#define _LIB_KSTRTOX_H + +#define KSTRTOX_OVERFLOW (1U << 31) +const char *_parse_integer_fixup_radix(const char *s, unsigned int *base); +unsigned int _parse_integer(const char *s, unsigned int base, unsigned long long *res); + +#endif |