diff options
| author | Roman Zippel <zippel@linux-m68k.org> | 2008-05-01 04:34:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-01 08:03:58 -0700 |
| commit | f8bd2258e2d520dff28c855658bd24bdafb5102d (patch) | |
| tree | d76db1dc858cb316bc7d5b8473f690a753fd2c93 /include/asm-x86/div64.h | |
| parent | 6f6d6a1a6a1336431a6cba60ace9e97c3a496a19 (diff) | |
remove div_long_long_rem
x86 is the only arch right now, which provides an optimized for
div_long_long_rem and it has the downside that one has to be very careful that
the divide doesn't overflow.
The API is a little akward, as the arguments for the unsigned divide are
signed. The signed version also doesn't handle a negative divisor and
produces worse code on 64bit archs.
There is little incentive to keep this API alive, so this converts the few
users to the new API.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-x86/div64.h')
| -rw-r--r-- | include/asm-x86/div64.h | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/include/asm-x86/div64.h b/include/asm-x86/div64.h index 32fdbddaae55..9a2d644c08ef 100644 --- a/include/asm-x86/div64.h +++ b/include/asm-x86/div64.h @@ -33,24 +33,6 @@ __mod; \ }) -/* - * (long)X = ((long long)divs) / (long)div - * (long)rem = ((long long)divs) % (long)div - * - * Warning, this will do an exception if X overflows. - */ -#define div_long_long_rem(a, b, c) div_ll_X_l_rem(a, b, c) - -static inline long div_ll_X_l_rem(long long divs, long div, long *rem) -{ - long dum2; - asm("divl %2":"=a"(dum2), "=d"(*rem) - : "rm"(div), "A"(divs)); - - return dum2; - -} - static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) { union { |