MIPS: Octeon: Set kernel_uses_llsc to false on non-SMP builds.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h

@@ -31,12 +31,16 @@
 #define cpu_has_cache_cdex_s	0
 #define cpu_has_prefetch	1
 
+#define cpu_has_llsc		1
 /*
- * We should disable LL/SC on non SMP systems as it is faster to
- * disable interrupts for atomic access than a LL/SC.  Unfortunatly we
- * cannot as this breaks asm/futex.h
+ * We Disable LL/SC on non SMP systems as it is faster to disable
+ * interrupts for atomic access than a LL/SC.
  */
-#define cpu_has_llsc		1
+#ifdef CONFIG_SMP
+# define kernel_uses_llsc	1
+#else
+# define kernel_uses_llsc	0
+#endif
 #define cpu_has_vtag_icache	1
 #define cpu_has_dc_aliases	0
 #define cpu_has_ic_fills_f_dc	0