1 files changed, 6 insertions, 1 deletions

diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index c104f1039a6..20e9dcf42b2 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -19,7 +19,6 @@
 #include <asm/cpu-info.h>
 #include <asm/mipsregs.h>
 #include <asm/prefetch.h>
-#include <asm/system.h>
 
 /*
  * Return current * instruction pointer ("program counter").
@@ -356,6 +355,12 @@ unsigned long get_wchan(struct task_struct *p);
 #define ARCH_HAS_PREFETCHW
 #define prefetchw(x) __builtin_prefetch((x), 1, 1)
 
+/*
+ * See Documentation/scheduler/sched-arch.txt; prevents deadlock on SMP
+ * systems.
+ */
+#define __ARCH_WANT_UNLOCKED_CTXSW
+
 #endif
 
 #endif /* _ASM_PROCESSOR_H */