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authorKhem Raj <raj.khem@gmail.com>2008-05-29 00:53:13 +0000
committerKhem Raj <raj.khem@gmail.com>2008-05-29 00:53:13 +0000
commitdb7749c30b3890990b48ef9c52b1d479d86966b0 (patch)
tree439dd8b7d129d3b73838ab908e3d94efc705e463 /packages
parentc04177964071e8662db0b24bbdf167a906356564 (diff)
Prevent the loop in timespec_add_ns() to be optimised away
Diffstat (limited to 'packages')
-rw-r--r--packages/linux/linux-omap1-2.6.24-omap1/timespec_add_ns_avoid_udivdi3.patch20
-rw-r--r--packages/linux/linux-omap1_2.6.24-omap1.bb1
2 files changed, 21 insertions, 0 deletions
diff --git a/packages/linux/linux-omap1-2.6.24-omap1/timespec_add_ns_avoid_udivdi3.patch b/packages/linux/linux-omap1-2.6.24-omap1/timespec_add_ns_avoid_udivdi3.patch
new file mode 100644
index 0000000000..4aba897b06
--- /dev/null
+++ b/packages/linux/linux-omap1-2.6.24-omap1/timespec_add_ns_avoid_udivdi3.patch
@@ -0,0 +1,20 @@
+Backport of this patch here
+
+http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg270684.html
+
+Needed for 2.6.24 to compile with gcc 4.3
+Index: linux-2.6.24/include/linux/time.h
+===================================================================
+--- linux-2.6.24.orig/include/linux/time.h 2008-05-28 15:39:46.000000000 -0700
++++ linux-2.6.24/include/linux/time.h 2008-05-28 15:40:48.000000000 -0700
+@@ -173,6 +173,10 @@
+ {
+ 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/packages/linux/linux-omap1_2.6.24-omap1.bb b/packages/linux/linux-omap1_2.6.24-omap1.bb
index f5ed1a43f9..2f2076b923 100644
--- a/packages/linux/linux-omap1_2.6.24-omap1.bb
+++ b/packages/linux/linux-omap1_2.6.24-omap1.bb
@@ -5,6 +5,7 @@ COMPATIBLE_MACHINE = "omap5912osk"
SRC_URI = "${KERNELORG_MIRROR}/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2 \
http://www.muru.com/linux/omap/patches/patch-2.6.24-omap1.bz2;patch=1 \
file://binutils-buildid-arm.patch;patch=1 \
+ file://timespec_add_ns_avoid_udivdi3.patch;patch=1 \
file://defconfig"
S = "${WORKDIR}/linux-2.6.24"