SMP for 32-bit kernel, support for Sibyte SB1. Patch from Justin

with minor changes by me.

1 files changed, 21 insertions, 8 deletions

diff --git a/include/asm-mips/system.h b/include/asm-mips/system.h
index 68117be89..1c1c8c575 100644
--- a/include/asm-mips/system.h
+++ b/include/asm-mips/system.h
@@ -115,14 +115,27 @@ do {									\
 		: "$1", "memory");					\
 } while(0)
 
-/*
- * Non-SMP versions ...
- */
-#define sti() __sti()
-#define cli() __cli()
-#define save_flags(x) __save_flags(x)
-#define save_and_cli(x) __save_and_cli(x)
-#define restore_flags(x) __restore_flags(x)
+#ifdef CONFIG_SMP
+
+extern void __global_sti(void);
+extern void __global_cli(void);
+extern unsigned long __global_save_flags(void);
+extern void __global_restore_flags(unsigned long);
+#  define sti() __global_sti()
+#  define cli() __global_cli() 
+#  define save_flags(x) do { x = __global_save_flags(); } while (0)
+#  define restore_flags(x) __global_restore_flags(x)
+#  define save_and_cli(x) do { save_flags(x); cli(); } while(0)
+
+#else /* Single processor */
+
+#  define sti() __sti()
+#  define cli() __cli()
+#  define save_flags(x) __save_flags(x)
+#  define save_and_cli(x) __save_and_cli(x)
+#  define restore_flags(x) __restore_flags(x)
+
+#endif /* SMP */
 
 /* For spinlocks etc */
 #define local_irq_save(x)	__save_and_cli(x);