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Commit 7bcacd88 authored by David S. Miller's avatar David S. Miller
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[SPARC64]: Fix preempt handling in dec_and_lock.S

parent 141d73f7
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arch/sparc64/lib/dec_and_lock.S
View file @ 7bcacd88
...@@ -29,7 +29,7 @@ ...@@ -29,7 +29,7 @@
atomic_dec_and_lock: /* %o0 = counter, %o1 = lock */ atomic_dec_and_lock: /* %o0 = counter, %o1 = lock */
loop1: lduw [%o0], %g5 loop1: lduw [%o0], %g5
subcc %g5, 1, %g7 subcc %g5, 1, %g7
be,pn %icc, to_zero be,pn %icc, start_to_zero
nop nop
nzero: cas [%o0], %g5, %g7 nzero: cas [%o0], %g5, %g7
cmp %g5, %g7 cmp %g5, %g7
...@@ -40,6 +40,7 @@ out: ...@@ -40,6 +40,7 @@ out:
membar #StoreLoad | #StoreStore membar #StoreLoad | #StoreStore
retl retl
mov %g1, %o0 mov %g1, %o0
start_to_zero:
#ifdef CONFIG_PREEMPT #ifdef CONFIG_PREEMPT
ldsw [%g6 + TI_PRE_COUNT], %g3 ldsw [%g6 + TI_PRE_COUNT], %g3
add %g3, 1, %g3 add %g3, 1, %g3
......
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