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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2008-06-12 10:47:58 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-12 10:47:58 +0200
commitd5e181f78ac753893eb930868a52a4488cd3de0a (patch)
tree7d2f71fd3c84196f0d81a9e44861743b74e58ef6 /lib/div64.c
parentf595ec964daf7f99668039d7303ddedd09a75142 (diff)
downloadlinux-linaro-precise-d5e181f78ac753893eb930868a52a4488cd3de0a.tar.gz
add an inlined version of iter_div_u64_rem
iter_div_u64_rem is used in the x86-64 vdso, which cannot call other kernel code. For this case, provide the always_inlined version, __iter_div_u64_rem. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/div64.c')
-rw-r--r--lib/div64.c15
1 files changed, 1 insertions, 14 deletions
diff --git a/lib/div64.c b/lib/div64.c
index 76c01542d3e..a111eb8de9c 100644
--- a/lib/div64.c
+++ b/lib/div64.c
@@ -105,19 +105,6 @@ EXPORT_SYMBOL(div64_u64);
*/
u32 iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder)
{
- u32 ret = 0;
-
- while (dividend >= divisor) {
- /* The following asm() prevents the compiler from
- optimising this loop into a modulo operation. */
- asm("" : "+rm"(dividend));
-
- dividend -= divisor;
- ret++;
- }
-
- *remainder = dividend;
-
- return ret;
+ return __iter_div_u64_rem(dividend, divisor, remainder);
}
EXPORT_SYMBOL(iter_div_u64_rem);