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authorIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
commita9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch)
tree886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/x86/include/asm/alternative-asm.h
parentb2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff)
parent6a94cb73064c952255336cc57731904174b2c58f (diff)
Merge branch 'linus' into stackprotector
Conflicts: arch/x86/include/asm/pda.h kernel/fork.c
Diffstat (limited to 'arch/x86/include/asm/alternative-asm.h')
-rw-r--r--arch/x86/include/asm/alternative-asm.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h
new file mode 100644
index 00000000000..e2077d343c3
--- /dev/null
+++ b/arch/x86/include/asm/alternative-asm.h
@@ -0,0 +1,22 @@
+#ifdef __ASSEMBLY__
+
+#ifdef CONFIG_X86_32
+# define X86_ALIGN .long
+#else
+# define X86_ALIGN .quad
+#endif
+
+#ifdef CONFIG_SMP
+ .macro LOCK_PREFIX
+1: lock
+ .section .smp_locks,"a"
+ .align 4
+ X86_ALIGN 1b
+ .previous
+ .endm
+#else
+ .macro LOCK_PREFIX
+ .endm
+#endif
+
+#endif /* __ASSEMBLY__ */