sparc64: Make lock backoff really a NOP on UP builds.

[firefly-linux-kernel-4.4.55.git] / arch / sparc / include / asm / backoff.h

diff --git a/arch/sparc/include/asm/backoff.h b/arch/sparc/include/asm/backoff.h
index fa1fdf67e350e07d950107289f25bdf3c41a73b3..db3af0d30fb10129124c594d1f1195bb59f2a6f2 100644 (file)
--- a/arch/sparc/include/asm/backoff.h
+++ b/arch/sparc/include/asm/backoff.h
@@ -8,6 +8,9 @@
 #define BACKOFF_SETUP(reg)     \
        mov     1, reg
 
+#define BACKOFF_LABEL(spin_label, continue_label) \
+       spin_label
+
 #define BACKOFF_SPIN(reg, tmp, label)  \
        mov     reg, tmp; \
 88:    brnz,pt tmp, 88b; \
@@ -22,9 +25,11 @@
 #else
 
 #define BACKOFF_SETUP(reg)
-#define BACKOFF_SPIN(reg, tmp, label) \
-       ba,pt   %xcc, label; \
-        nop;
+
+#define BACKOFF_LABEL(spin_label, continue_label) \
+       continue_label
+
+#define BACKOFF_SPIN(reg, tmp, label)
 
 #endif