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-rw-r--r--meta/recipes-core/glibc/glibc/0004-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch32
1 files changed, 32 insertions, 0 deletions
diff --git a/meta/recipes-core/glibc/glibc/0004-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch b/meta/recipes-core/glibc/glibc/0004-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch
new file mode 100644
index 0000000000..21f04a1321
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/0004-nativesdk-glibc-Allow-64-bit-atomics-for-x86.patch
@@ -0,0 +1,32 @@
+From 2e1638115f0f924ee8235eee9265047054c15cfd Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 31 Dec 2015 14:35:35 -0800
+Subject: [PATCH 04/24] nativesdk-glibc: Allow 64 bit atomics for x86
+
+The fix consist of allowing 64bit atomic ops for x86.
+This should be safe for i586 and newer CPUs.
+It also makes the synchronization more efficient.
+
+Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ sysdeps/i386/atomic-machine.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/sysdeps/i386/atomic-machine.h b/sysdeps/i386/atomic-machine.h
+index 59f3d34..6f6b7ff 100644
+--- a/sysdeps/i386/atomic-machine.h
++++ b/sysdeps/i386/atomic-machine.h
+@@ -54,7 +54,7 @@ typedef uintmax_t uatomic_max_t;
+ # endif
+ #endif
+
+-#define __HAVE_64B_ATOMICS 0
++#define __HAVE_64B_ATOMICS 1
+ #define USE_ATOMIC_COMPILER_BUILTINS 0
+
+
+--
+2.6.4
+