[v7,5/5] lib/distributor: use wait event scheme
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Commit Message
Instead of polling for bufptr64 to be updated, use
wait event for this case.
Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
lib/distributor/rte_distributor_single.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
@@ -33,9 +33,8 @@ rte_distributor_request_pkt_single(struct rte_distributor_single *d,
union rte_distributor_buffer_single *buf = &d->bufs[worker_id];
int64_t req = (((int64_t)(uintptr_t)oldpkt) << RTE_DISTRIB_FLAG_BITS)
| RTE_DISTRIB_GET_BUF;
- while (unlikely(__atomic_load_n(&buf->bufptr64, __ATOMIC_RELAXED)
- & RTE_DISTRIB_FLAGS_MASK))
- rte_pause();
+ rte_wait_event(&buf->bufptr64, RTE_DISTRIB_FLAGS_MASK,
+ !=, 0, __ATOMIC_RELAXED);
/* Sync with distributor on GET_BUF flag. */
__atomic_store_n(&(buf->bufptr64), req, __ATOMIC_RELEASE);
@@ -74,9 +73,8 @@ rte_distributor_return_pkt_single(struct rte_distributor_single *d,
union rte_distributor_buffer_single *buf = &d->bufs[worker_id];
uint64_t req = (((int64_t)(uintptr_t)oldpkt) << RTE_DISTRIB_FLAG_BITS)
| RTE_DISTRIB_RETURN_BUF;
- while (unlikely(__atomic_load_n(&buf->bufptr64, __ATOMIC_RELAXED)
- & RTE_DISTRIB_FLAGS_MASK))
- rte_pause();
+ rte_wait_event(&buf->bufptr64, RTE_DISTRIB_FLAGS_MASK,
+ !=, 0, __ATOMIC_RELAXED);
/* Sync with distributor on RETURN_BUF flag. */
__atomic_store_n(&(buf->bufptr64), req, __ATOMIC_RELEASE);