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rcu: use EAL memory barrier API

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Use rte_atomic_thread_fence wrapper which has been provided for
__atomic_thread_fence builtins to support optimized code for
__ATOMIC_SEQ_CST memory order on x86 platforms.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
This commit is contained in:
Joyce Kong 2020-12-21 15:38:48 +08:00 committed by David Marchand
parent 397fb6a8d9
commit 4aae2397ad
1 changed files with 1 additions and 6 deletions
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7
lib/librte_rcu/rte_rcu_qsbr.h
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@ -329,12 +329,7 @@ rte_rcu_qsbr_thread_online(struct rte_rcu_qsbr *v, unsigned int thread_id)
* writer might not see that the reader is online, even though
* the reader is referencing the shared data structure.
*/
#ifdef RTE_ARCH_X86_64
/* rte_smp_mb() for x86 is lighter */
rte_smp_mb();
#else
__atomic_thread_fence(__ATOMIC_SEQ_CST);
#endif
rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
}
/**