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app/eventdev: use compiler atomics for shared data sync

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Convert rte_atomic usages to compiler atomic built-ins
for shared data sync in eventdev cases.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
This commit is contained in:
Joyce Kong 2021-11-17 08:21:55 +00:00 committed by David Marchand
parent 45f838d60a
commit 5109487205
4 changed files with 10 additions and 10 deletions
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4
app/test-eventdev/test_order_atq.c
View File

@ -28,7 +28,7 @@ order_atq_worker(void *arg, const bool flow_id_cap)
uint16_t event = rte_event_dequeue_burst(dev_id, port,
&ev, 1, 0);
if (!event) {
if (rte_atomic64_read(outstand_pkts) <= 0)
if (__atomic_load_n(outstand_pkts, __ATOMIC_RELAXED) <= 0)
break;
rte_pause();
continue;
@ -64,7 +64,7 @@ order_atq_worker_burst(void *arg, const bool flow_id_cap)
BURST_SIZE, 0);
if (nb_rx == 0) {
if (rte_atomic64_read(outstand_pkts) <= 0)
if (__atomic_load_n(outstand_pkts, __ATOMIC_RELAXED) <= 0)
break;
rte_pause();
continue;

4
app/test-eventdev/test_order_common.c
View File

@ -187,7 +187,7 @@ order_test_setup(struct evt_test *test, struct evt_options *opt)
evt_err("failed to allocate t->expected_flow_seq memory");
goto exp_nomem;
}
rte_atomic64_set(&t->outstand_pkts, opt->nb_pkts);
__atomic_store_n(&t->outstand_pkts, opt->nb_pkts, __ATOMIC_RELAXED);
t->err = false;
t->nb_pkts = opt->nb_pkts;
t->nb_flows = opt->nb_flows;
@ -294,7 +294,7 @@ order_launch_lcores(struct evt_test *test, struct evt_options *opt,
while (t->err == false) {
uint64_t new_cycles = rte_get_timer_cycles();
int64_t remaining = rte_atomic64_read(&t->outstand_pkts);
int64_t remaining = __atomic_load_n(&t->outstand_pkts, __ATOMIC_RELAXED);
if (remaining <= 0) {
t->result = EVT_TEST_SUCCESS;

8
app/test-eventdev/test_order_common.h
View File

@ -48,7 +48,7 @@ struct test_order {
* The atomic_* is an expensive operation,Since it is a functional test,
* We are using the atomic_ operation to reduce the code complexity.
*/
rte_atomic64_t outstand_pkts;
uint64_t outstand_pkts;
enum evt_test_result result;
uint32_t nb_flows;
uint64_t nb_pkts;
@ -95,7 +95,7 @@ static __rte_always_inline void
order_process_stage_1(struct test_order *const t,
struct rte_event *const ev, const uint32_t nb_flows,
uint32_t *const expected_flow_seq,
rte_atomic64_t *const outstand_pkts)
uint64_t *const outstand_pkts)
{
const uint32_t flow = (uintptr_t)ev->mbuf % nb_flows;
/* compare the seqn against expected value */
@ -113,7 +113,7 @@ order_process_stage_1(struct test_order *const t,
*/
expected_flow_seq[flow]++;
rte_pktmbuf_free(ev->mbuf);
rte_atomic64_sub(outstand_pkts, 1);
__atomic_sub_fetch(outstand_pkts, 1, __ATOMIC_RELAXED);
}
static __rte_always_inline void
@ -132,7 +132,7 @@ order_process_stage_invalid(struct test_order *const t,
const uint8_t port = w->port_id;\
const uint32_t nb_flows = t->nb_flows;\
uint32_t *expected_flow_seq = t->expected_flow_seq;\
rte_atomic64_t *outstand_pkts = &t->outstand_pkts;\
uint64_t *outstand_pkts = &t->outstand_pkts;\
if (opt->verbose_level > 1)\
printf("%s(): lcore %d dev_id %d port=%d\n",\
__func__, rte_lcore_id(), dev_id, port)

4
app/test-eventdev/test_order_queue.c
View File

@ -28,7 +28,7 @@ order_queue_worker(void *arg, const bool flow_id_cap)
uint16_t event = rte_event_dequeue_burst(dev_id, port,
&ev, 1, 0);
if (!event) {
if (rte_atomic64_read(outstand_pkts) <= 0)
if (__atomic_load_n(outstand_pkts, __ATOMIC_RELAXED) <= 0)
break;
rte_pause();
continue;
@ -64,7 +64,7 @@ order_queue_worker_burst(void *arg, const bool flow_id_cap)
BURST_SIZE, 0);
if (nb_rx == 0) {
if (rte_atomic64_read(outstand_pkts) <= 0)
if (__atomic_load_n(outstand_pkts, __ATOMIC_RELAXED) <= 0)
break;
rte_pause();
continue;