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test/mempool: use compiler atomics for lcores sync

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Convert rte_atomic usages to compiler atomic built-ins for lcores
sync in mempool_perf testcases. Meanwhile, remove unnecessary
synchro init as it would be set to 0 when launching cores.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Joyce Kong 2021-07-19 22:51:23 -05:00 committed by Thomas Monjalon
parent eb9ea11c97
commit e9fea30314
1 changed files with 4 additions and 7 deletions
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11
app/test/test_mempool_perf.c
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@ -20,7 +20,6 @@
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_mempool.h>
#include <rte_spinlock.h>
@ -83,7 +82,7 @@
static int use_external_cache;
static unsigned external_cache_size = RTE_MEMPOOL_CACHE_MAX_SIZE;
static rte_atomic32_t synchro;
static uint32_t synchro;
/* number of objects in one bulk operation (get or put) */
static unsigned n_get_bulk;
@ -145,7 +144,7 @@ per_lcore_mempool_test(void *arg)
/* wait synchro for workers */
if (lcore_id != rte_get_main_lcore())
while (rte_atomic32_read(&synchro) == 0);
rte_wait_until_equal_32(&synchro, 1, __ATOMIC_RELAXED);
start_cycles = rte_get_timer_cycles();
@ -198,7 +197,7 @@ launch_cores(struct rte_mempool *mp, unsigned int cores)
int ret;
unsigned cores_save = cores;
rte_atomic32_set(&synchro, 0);
__atomic_store_n(&synchro, 0, __ATOMIC_RELAXED);
/* reset stats */
memset(stats, 0, sizeof(stats));
@ -223,7 +222,7 @@ launch_cores(struct rte_mempool *mp, unsigned int cores)
}
/* start synchro and launch test on main */
rte_atomic32_set(&synchro, 1);
__atomic_store_n(&synchro, 1, __ATOMIC_RELAXED);
ret = per_lcore_mempool_test(mp);
@ -288,8 +287,6 @@ test_mempool_perf(void)
const char *default_pool_ops;
int ret = -1;
rte_atomic32_init(&synchro);
/* create a mempool (without cache) */
mp_nocache = rte_mempool_create("perf_test_nocache", MEMPOOL_SIZE,
MEMPOOL_ELT_SIZE, 0, 0,