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event/dlb2: optimize credit allocations

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This commit implements the changes required for using suggested
port type hint feature. Each port uses different credit quanta
based on port type specified using port configuration flags.

Each port has separate quanta defined in dlb2_priv.h
Producer and consumer ports will need larger quanta value to reduce number
of credit calls they make. Workers can use small quanta as they mostly
work out of locally cached credits and don't request/return credits often.

Signed-off-by: Abdullah Sevincer <abdullah.sevincer@intel.com>
This commit is contained in:
Abdullah Sevincer 2022-09-29 18:59:00 -05:00 committed by Jerin Jacob
parent d8c16de5df
commit bdd0b609a1
1 changed files with 19 additions and 1 deletions
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20
drivers/event/dlb2/dlb2.c
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@ -1965,8 +1965,8 @@ dlb2_eventdev_port_setup(struct rte_eventdev *dev,
{
struct dlb2_eventdev *dlb2;
struct dlb2_eventdev_port *ev_port;
int ret;
uint32_t hw_credit_quanta, sw_credit_quanta;
int ret;
if (dev == NULL || port_conf == NULL) {
DLB2_LOG_ERR("Null parameter\n");
@ -2067,6 +2067,24 @@ dlb2_eventdev_port_setup(struct rte_eventdev *dev,
ev_port->inflight_credits = 0;
ev_port->dlb2 = dlb2; /* reverse link */
/* Default for worker ports */
sw_credit_quanta = dlb2->sw_credit_quanta;
hw_credit_quanta = dlb2->hw_credit_quanta;
if (port_conf->event_port_cfg & RTE_EVENT_PORT_CFG_HINT_PRODUCER) {
/* Producer type ports. Mostly enqueue */
sw_credit_quanta = DLB2_SW_CREDIT_P_QUANTA_DEFAULT;
hw_credit_quanta = DLB2_SW_CREDIT_P_BATCH_SZ;
}
if (port_conf->event_port_cfg & RTE_EVENT_PORT_CFG_HINT_CONSUMER) {
/* Consumer type ports. Mostly dequeue */
sw_credit_quanta = DLB2_SW_CREDIT_C_QUANTA_DEFAULT;
hw_credit_quanta = DLB2_SW_CREDIT_C_BATCH_SZ;
}
ev_port->credit_update_quanta = sw_credit_quanta;
ev_port->qm_port.hw_credit_quanta = hw_credit_quanta;
/* Tear down pre-existing port->queue links */
if (dlb2->run_state == DLB2_RUN_STATE_STOPPED)
dlb2_port_link_teardown(dlb2, &dlb2->ev_ports[ev_port_id]);