diff options
Diffstat (limited to 'arch/sparc64/lib/dec_and_lock.S')
| -rw-r--r-- | arch/sparc64/lib/dec_and_lock.S | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/sparc64/lib/dec_and_lock.S b/arch/sparc64/lib/dec_and_lock.S index 7e6fdaebedb..8ee288dd0af 100644 --- a/arch/sparc64/lib/dec_and_lock.S +++ b/arch/sparc64/lib/dec_and_lock.S @@ -48,8 +48,9 @@ start_to_zero: #endif to_zero: ldstub [%o1], %g3 + membar #StoreLoad | #StoreStore brnz,pn %g3, spin_on_lock - membar #StoreLoad | #StoreStore + nop loop2: cas [%o0], %g2, %g7 /* ASSERT(g7 == 0) */ cmp %g2, %g7 @@ -71,8 +72,9 @@ loop2: cas [%o0], %g2, %g7 /* ASSERT(g7 == 0) */ nop spin_on_lock: ldub [%o1], %g3 + membar #LoadLoad brnz,pt %g3, spin_on_lock - membar #LoadLoad + nop ba,pt %xcc, to_zero nop nop |