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authorAnton Vorontsov <cbouatmailru@gmail.com>2008-07-30 02:05:23 +0400
committerAnton Vorontsov <cbouatmailru@gmail.com>2008-07-30 02:05:23 +0400
commit9fec6060d9e48ed7db0dac0e16d0f0f0e615b7f6 (patch)
tree74b41f31a08f6500ff3dfcf64ba21e2d9a8e87e5 /include/linux/math64.h
parentfece418418f51e92dd7e67e17c5e3fe5a28d3279 (diff)
parent6e86841d05f371b5b9b86ce76c02aaee83352298 (diff)
downloadop-kernel-dev-9fec6060d9e48ed7db0dac0e16d0f0f0e615b7f6.zip
op-kernel-dev-9fec6060d9e48ed7db0dac0e16d0f0f0e615b7f6.tar.gz
Merge branch 'master' of /home/cbou/linux-2.6
Conflicts: drivers/power/Kconfig drivers/power/Makefile
Diffstat (limited to 'include/linux/math64.h')
-rw-r--r--include/linux/math64.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/math64.h b/include/linux/math64.h
index c1a5f81..c87f152 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -81,4 +81,25 @@ static inline s64 div_s64(s64 dividend, s32 divisor)
}
#endif
+u32 iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder);
+
+static __always_inline 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;
+}
+
#endif /* _LINUX_MATH64_H */
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