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authorRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:14:24 +0100
committerRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:29:45 +0100
commit29d6678fd546377459ef75cf54abeef5b969b5cf (patch)
tree8edd65790e37a00d01c3f203f773fe4b5012db18 /meta/recipes-kernel/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch
parentda49de6885ee1bc424e70bc02f21f6ab920efb55 (diff)
downloadpoky-29d6678fd546377459ef75cf54abeef5b969b5cf.tar.gz
Major layout change to the packages directory
Having one monolithic packages directory makes it hard to find things and is generally overwhelming. This commit splits it into several logical sections roughly based on function, recipes.txt gives more information about the classifications used. The opportunity is also used to switch from "packages" to "recipes" as used in OpenEmbedded as the term "packages" can be confusing to people and has many different meanings. Not all recipes have been classified yet, this is just a first pass at separating things out. Some packages are moved to meta-extras as they're no longer actively used or maintained. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch')
-rw-r--r--meta/recipes-kernel/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch b/meta/recipes-kernel/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/recipes-kernel/linux/linux-omap-2.6.24.7/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch
@@ -0,0 +1,29 @@
1commit 38332cb98772f5ea757e6486bed7ed0381cb5f98
2Author: Segher Boessenkool <segher@kernel.crashing.org>
3Date: Tue Mar 4 14:59:54 2008 -0800
4
5 time: prevent the loop in timespec_add_ns() from being optimised away
6
7 Since some architectures don't support __udivdi3().
8
9 Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
10 Cc: john stultz <johnstul@us.ibm.com>
11 Cc: Ingo Molnar <mingo@elte.hu>
12 Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
13 Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
14
15diff --git a/include/linux/time.h b/include/linux/time.h
16index 2091a19..d32ef0a 100644
17--- a/include/linux/time.h
18+++ b/include/linux/time.h
19@@ -174,6 +174,10 @@ static inline void timespec_add_ns(struct timespec *a, u64 ns)
20 {
21 ns += a->tv_nsec;
22 while(unlikely(ns >= NSEC_PER_SEC)) {
23+ /* The following asm() prevents the compiler from
24+ * optimising this loop into a modulo operation. */
25+ asm("" : "+r"(ns));
26+
27 ns -= NSEC_PER_SEC;
28 a->tv_sec++;
29 }