diff options
Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.21/32-time_fix_timespec_add_ns.patch')
| -rw-r--r-- | target/linux/generic-2.6/patches-2.6.21/32-time_fix_timespec_add_ns.patch | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.21/32-time_fix_timespec_add_ns.patch b/target/linux/generic-2.6/patches-2.6.21/32-time_fix_timespec_add_ns.patch new file mode 100644 index 000000000..378ee28ed --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.21/32-time_fix_timespec_add_ns.patch @@ -0,0 +1,17 @@ +time: prevent the loop in timespec_add_ns() from being optimised away + +Since some architectures don't support __udivdi3(). + +--- a/include/linux/time.h ++++ b/include/linux/time.h +@@ -170,6 +170,10 @@ static inline void timespec_add_ns(struc + { + ns += a->tv_nsec; + while(unlikely(ns >= NSEC_PER_SEC)) { ++ /* The following asm() prevents the compiler from ++ * optimising this loop into a modulo operation. */ ++ asm("" : "+r"(ns)); ++ + ns -= NSEC_PER_SEC; + a->tv_sec++; + } |