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event/octeontx: improve dequeue performance

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switch tag wait is a costly operation as it may
translate to IOB read if core swtag cache is not updated.
Do tag switch wait only when there is a tag request on
the same hardware work slot.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Gage Eads <gage.eads@intel.com>
This commit is contained in:
Jerin Jacob 2017-06-09 17:36:50 +05:30
parent d0b61f6db5
commit 520a12b58d
1 changed files with 2 additions and 2 deletions
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4
drivers/event/octeontx/ssovf_worker.c
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@ -126,9 +126,9 @@ ssows_deq(void *port, struct rte_event *ev, uint64_t timeout_ticks)
RTE_SET_USED(timeout_ticks);
ssows_swtag_wait(ws);
if (ws->swtag_req) {
ws->swtag_req = 0;
ssows_swtag_wait(ws);
return 1;
} else {
return ssows_get_work(ws, ev);
@ -142,9 +142,9 @@ ssows_deq_timeout(void *port, struct rte_event *ev, uint64_t timeout_ticks)
uint64_t iter;
uint16_t ret = 1;
ssows_swtag_wait(ws);
if (ws->swtag_req) {
ws->swtag_req = 0;
ssows_swtag_wait(ws);
} else {
ret = ssows_get_work(ws, ev);
for (iter = 1; iter < timeout_ticks && (ret == 0); iter++)