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authorRoman Zippel <zippel@linux-m68k.org>2008-05-01 04:34:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-01 08:03:58 -0700
commitf8bd2258e2d520dff28c855658bd24bdafb5102d (patch)
treed76db1dc858cb316bc7d5b8473f690a753fd2c93 /include/asm-x86/div64.h
parent6f6d6a1a6a1336431a6cba60ace9e97c3a496a19 (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.h18
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 {