[SPARC64]: Add sun4v_cpu_yield().
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index bd332e4..9f3048e 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -1786,3 +1786,12 @@
ta HV_FAST_TRAP
retl
nop
+
+ /* returns %o0: status
+ */
+ .globl sun4v_cpu_yield
+sun4v_cpu_yield:
+ mov HV_FAST_CPU_YIELD, %o5
+ ta HV_FAST_TRAP
+ retl
+ nop
diff --git a/include/asm-sparc64/hypervisor.h b/include/asm-sparc64/hypervisor.h
index cd5fbcd..726e2ea0 100644
--- a/include/asm-sparc64/hypervisor.h
+++ b/include/asm-sparc64/hypervisor.h
@@ -258,6 +258,9 @@
*/
#define HV_FAST_CPU_YIELD 0x12
+#ifndef __ASSEMBLY__
+extern unsigned long sun4v_cpu_yield(void);
+#endif
/* cpu_qconf()
* TRAP: HV_FAST_TRAP