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MEDIUM: list: Remove useless barriers.

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Don't bother forcing a barrier after using HA_ATOMIC_XCHG if we're about
to check the returned value anyway.
This commit is contained in:
Olivier Houchard 2019-03-13 17:13:04 +01:00 committed by Olivier Houchard
parent 897e2c58e6
commit 17fbb4eb3f
1 changed files with 0 additions and 2 deletions
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2
include/common/mini-clist.h
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@ -192,7 +192,6 @@ struct cond_wordlist {
n = HA_ATOMIC_XCHG(&(lh)->n, LLIST_BUSY); \
if (n == LLIST_BUSY) \
continue; \
__ha_barrier_atomic_store(); \
p = HA_ATOMIC_XCHG(&n->p, LLIST_BUSY); \
if (p == LLIST_BUSY) { \
(lh)->n = n; \
@ -218,7 +217,6 @@ struct cond_wordlist {
p = HA_ATOMIC_XCHG(&(lh)->p, LLIST_BUSY); \
if (p == LLIST_BUSY) \
continue; \
__ha_barrier_store(); \
n = HA_ATOMIC_XCHG(&p->n, LLIST_BUSY); \
if (n == LLIST_BUSY) { \
(lh)->p = p; \