commit f3002134158092178be81339ec5a22ff80e6c308 upstream. This reverts commit f792685006274a850e6cc0ea9ade275ccdfc90bc. The cputime scaling code was changed/fixed and does not need the div64_u64_rem() primitive anymore. It has no other users, so let's remove them. Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: rostedt@xxxxxxxxxxx Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Dave Hansen <dave@xxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/1367314507-9728-4-git-send-email-sgruszka@xxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- include/linux/math64.h | 19 +------------------ lib/div64.c | 19 ++++++------------- 2 files changed, 7 insertions(+), 31 deletions(-) diff --git a/include/linux/math64.h b/include/linux/math64.h index 931a619..b8ba855 100644 --- a/include/linux/math64.h +++ b/include/linux/math64.h @@ -30,15 +30,6 @@ static inline s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder) } /** - * div64_u64_rem - unsigned 64bit divide with 64bit divisor - */ -static inline u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder) -{ - *remainder = dividend % divisor; - return dividend / divisor; -} - -/** * div64_u64 - unsigned 64bit divide with 64bit divisor */ static inline u64 div64_u64(u64 dividend, u64 divisor) @@ -70,16 +61,8 @@ static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) extern s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder); #endif -#ifndef div64_u64_rem -extern u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder); -#endif - #ifndef div64_u64 -static inline u64 div64_u64(u64 dividend, u64 divisor) -{ - u64 remainder; - return div64_u64_rem(dividend, divisor, &remainder); -} +extern u64 div64_u64(u64 dividend, u64 divisor); #endif #ifndef div64_s64 diff --git a/lib/div64.c b/lib/div64.c index 3af5728..a163b6c 100644 --- a/lib/div64.c +++ b/lib/div64.c @@ -79,10 +79,9 @@ EXPORT_SYMBOL(div_s64_rem); #endif /** - * div64_u64_rem - unsigned 64bit divide with 64bit divisor and 64bit remainder + * div64_u64 - unsigned 64bit divide with 64bit divisor * @dividend: 64bit dividend * @divisor: 64bit divisor - * @remainder: 64bit remainder * * This implementation is a modified version of the algorithm proposed * by the book 'Hacker's Delight'. The original source and full proof @@ -90,33 +89,27 @@ EXPORT_SYMBOL(div_s64_rem); * * 'http://www.hackersdelight.org/HDcode/newCode/divDouble.c.txt' */ -#ifndef div64_u64_rem -u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder) +#ifndef div64_u64 +u64 div64_u64(u64 dividend, u64 divisor) { u32 high = divisor >> 32; u64 quot; if (high == 0) { - u32 rem32; - quot = div_u64_rem(dividend, divisor, &rem32); - *remainder = rem32; + quot = div_u64(dividend, divisor); } else { int n = 1 + fls(high); quot = div_u64(dividend >> n, divisor >> n); if (quot != 0) quot--; - - *remainder = dividend - quot * divisor; - if (*remainder >= divisor) { + if ((dividend - quot * divisor) >= divisor) quot++; - *remainder -= divisor; - } } return quot; } -EXPORT_SYMBOL(div64_u64_rem); +EXPORT_SYMBOL(div64_u64); #endif /** -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html