VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)

[linux-2.6.git] / arch / sparc64 / lib / splock.S

diff --git a/arch/sparc64/lib/splock.S b/arch/sparc64/lib/splock.S
index d17a3ba..e466ed2 100644 (file)
--- a/arch/sparc64/lib/splock.S
+++ b/arch/sparc64/lib/splock.S
@@ -6,6 +6,18 @@
        .text
        .align  64
 
+       .globl          _raw_spin_lock
+_raw_spin_lock:                /* %o0 = lock_ptr */
+1:     ldstub          [%o0], %g7
+       brnz,pn         %g7, 2f
+        membar         #StoreLoad | #StoreStore
+       retl
+        nop
+2:     ldub            [%o0], %g7
+       brnz,pt         %g7, 2b
+        membar         #LoadLoad
+       ba,a,pt         %xcc, 1b
+
        .globl  _raw_spin_lock_flags
 _raw_spin_lock_flags:  /* %o0 = lock_ptr, %o1 = irq_flags */
 1:     ldstub          [%o0], %g7