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net/dpaa2: prefetch the annotation in event processing

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This patch adds software prefetching of the annotation which is
accessed by the driver to fetch the parsing results. The changes
also include as many instructions in between prefetching memory
and using it.

Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
This commit is contained in:
Nipun Gupta 2018-01-23 19:47:53 +05:30 committed by Jerin Jacob
parent c409ed1bb0
commit 8fc28889bd
1 changed files with 16 additions and 8 deletions
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24
drivers/net/dpaa2/dpaa2_rxtx.c
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@ -676,7 +676,8 @@ dpaa2_dev_process_parallel_event(struct qbman_swp *swp,
struct dpaa2_queue *rxq,
struct rte_event *ev)
{
ev->mbuf = eth_fd_to_mbuf(fd);
rte_prefetch0((void *)(DPAA2_GET_FD_ADDR(fd) +
DPAA2_FD_PTA_SIZE + 16));
ev->flow_id = rxq->ev.flow_id;
ev->sub_event_type = rxq->ev.sub_event_type;
@ -686,18 +687,22 @@ dpaa2_dev_process_parallel_event(struct qbman_swp *swp,
ev->queue_id = rxq->ev.queue_id;
ev->priority = rxq->ev.priority;
ev->mbuf = eth_fd_to_mbuf(fd);
qbman_swp_dqrr_consume(swp, dq);
}
void dpaa2_dev_process_atomic_event(struct qbman_swp *swp __attribute__((unused)),
const struct qbman_fd *fd,
const struct qbman_result *dq,
struct dpaa2_queue *rxq,
struct rte_event *ev)
void __attribute__((hot))
dpaa2_dev_process_atomic_event(struct qbman_swp *swp __attribute__((unused)),
const struct qbman_fd *fd,
const struct qbman_result *dq,
struct dpaa2_queue *rxq,
struct rte_event *ev)
{
uint8_t dqrr_index = qbman_get_dqrr_idx(dq);
uint8_t dqrr_index;
ev->mbuf = eth_fd_to_mbuf(fd);
rte_prefetch0((void *)(DPAA2_GET_FD_ADDR(fd) +
DPAA2_FD_PTA_SIZE + 16));
ev->flow_id = rxq->ev.flow_id;
ev->sub_event_type = rxq->ev.sub_event_type;
@ -707,6 +712,9 @@ void dpaa2_dev_process_atomic_event(struct qbman_swp *swp __attribute__((unused)
ev->queue_id = rxq->ev.queue_id;
ev->priority = rxq->ev.priority;
ev->mbuf = eth_fd_to_mbuf(fd);
dqrr_index = qbman_get_dqrr_idx(dq);
ev->mbuf->seqn = dqrr_index + 1;
DPAA2_PER_LCORE_DQRR_SIZE++;
DPAA2_PER_LCORE_DQRR_HELD |= 1 << dqrr_index;