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>

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 {