diff options
| -rw-r--r-- | meta/packages/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch | 29 | ||||
| -rw-r--r-- | meta/packages/linux/linux-omap_2.6.24.7.bb | 3 |
2 files changed, 31 insertions, 1 deletions
diff --git a/meta/packages/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch b/meta/packages/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch new file mode 100644 index 0000000000..58cbe7be23 --- /dev/null +++ b/meta/packages/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch @@ -0,0 +1,29 @@ +commit 38332cb98772f5ea757e6486bed7ed0381cb5f98 +Author: Segher Boessenkool <segher@kernel.crashing.org> +Date: Tue Mar 4 14:59:54 2008 -0800 + + time: prevent the loop in timespec_add_ns() from being optimised away + + Since some architectures don't support __udivdi3(). + + Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> + Cc: john stultz <johnstul@us.ibm.com> + Cc: Ingo Molnar <mingo@elte.hu> + Signed-off-by: Andrew Morton <akpm@linux-foundation.org> + Signed-off-by: Thomas Gleixner <tglx@linutronix.de> + +diff --git a/include/linux/time.h b/include/linux/time.h +index 2091a19..d32ef0a 100644 +--- a/include/linux/time.h ++++ b/include/linux/time.h +@@ -174,6 +174,10 @@ static inline void timespec_add_ns(struct timespec *a, u64 ns) + { + 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++; + } diff --git a/meta/packages/linux/linux-omap_2.6.24.7.bb b/meta/packages/linux/linux-omap_2.6.24.7.bb index 1cdad0db5e..1defa79c50 100644 --- a/meta/packages/linux/linux-omap_2.6.24.7.bb +++ b/meta/packages/linux/linux-omap_2.6.24.7.bb @@ -1,6 +1,6 @@ require linux-omap.inc -PR = "r5" +PR = "r6" COMPATIBLE_MACHINE = "omap-3430ldp|omap-3430sdp" DEFAULT_PREFERENCE = "1" @@ -18,6 +18,7 @@ SRC_URI="http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2 \ file://fixes.patch;patch=1 \ file://fixes2.patch;patch=1 \ file://module_fix.patch;patch=1 \ + file://time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch;patch=1 \ file://defconfig-${MACHINE}" S = "${WORKDIR}/linux-2.6.24" |