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| author |   Richard Purdie <rpurdie@linux.intel.com> | 2010-08-27 15:14:24 +0100 |
|---|---|---|
| committer | Richard Purdie <rpurdie@linux.intel.com> | 2010-08-27 15:29:45 +0100 |
| commit | 29d6678fd546377459ef75cf54abeef5b969b5cf (patch) | |
| tree | 8edd65790e37a00d01c3f203f773fe4b5012db18 /meta/recipes-kernel/linux/files/1300-fix-gcc-4.3-false-modulo-optimization.patch.patch | |
| parent | da49de6885ee1bc424e70bc02f21f6ab920efb55 (diff) | |
| download | openembedded-core-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/files/1300-fix-gcc-4.3-false-modulo-optimization.patch.patch')
| -rw-r--r-- | meta/recipes-kernel/linux/files/1300-fix-gcc-4.3-false-modulo-optimization.patch.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/files/1300-fix-gcc-4.3-false-modulo-optimization.patch.patch b/meta/recipes-kernel/linux/files/1300-fix-gcc-4.3-false-modulo-optimization.patch.patch new file mode 100644 index 0000000000..3ff0c07c18 --- /dev/null +++ b/meta/recipes-kernel/linux/files/1300-fix-gcc-4.3-false-modulo-optimization.patch.patch @@ -0,0 +1,48 @@ +From f5b973489beb1a1239dfad53e3ad6e36ff7ee958 Mon Sep 17 00:00:00 2001 +From: Segher Boessenkool <segher@kernel.crashing.org> +Date: Thu, 9 Oct 2008 21:18:27 +0100 +Subject: [PATCH] fix-gcc-4.3-false-modulo-optimization.patch + +I tried to compile the current stable kernel +(a2ef813d2f439a3e9f377d33a2e5baad098afb7e) +and get the following errors: + +kernel/built-in.o: In function `timespec_add_ns': +/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:174: +undefined reference to `__aeabi_uldivmod' +/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:179: +undefined reference to `__aeabi_uldivmod' +/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:174: +undefined reference to `__aeabi_uldivmod' +/mnt/data/Freerunner/Gentoo/rootinstall/usr/src/linux/include/linux/time.h:179: +undefined reference to `__aeabi_uldivmod' + +applying the following patch solved the problem: +-------- +Prevent gcc-4.3 form "optimizing" the while loop into a costly modulo operation. +Patch found at http://lkml.org/lkml/2008/2/22/464. + +Reported-by: Sven Rebhan <odinshorse@googlemail.com> +Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> +--- + include/linux/time.h | 4 ++++ + 1 files changed, 4 insertions(+), 0 deletions(-) + +diff --git a/include/linux/time.h b/include/linux/time.h +index b04136d..3e8fd9e 100644 +--- a/include/linux/time.h ++++ b/include/linux/time.h +@@ -173,6 +173,10 @@ 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++; + } +-- +1.5.6.5 + |