[dpdk-dev] [PATCH v3 2/8] test/spinlock: use compile atomics for lcores sync
Joyce Kong
joyce.kong at arm.com
Tue Jul 20 05:51:19 CEST 2021
Convert rte_atomic usages to compiler atomic built-ins for lcores
sync in spinlock testcases.
Signed-off-by: Joyce Kong <joyce.kong at arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
Acked-by: Stephen Hemminger <stephen at networkplumber.org>
---
app/test/test_spinlock.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/app/test/test_spinlock.c b/app/test/test_spinlock.c
index 054fb43a9f..3f59372300 100644
--- a/app/test/test_spinlock.c
+++ b/app/test/test_spinlock.c
@@ -17,7 +17,6 @@
#include <rte_lcore.h>
#include <rte_cycles.h>
#include <rte_spinlock.h>
-#include <rte_atomic.h>
#include "test.h"
@@ -49,7 +48,7 @@ static rte_spinlock_t sl_tab[RTE_MAX_LCORE];
static rte_spinlock_recursive_t slr;
static unsigned count = 0;
-static rte_atomic32_t synchro;
+static uint32_t synchro;
static int
test_spinlock_per_core(__rte_unused void *arg)
@@ -111,7 +110,7 @@ load_loop_fn(void *func_param)
/* wait synchro for workers */
if (lcore != rte_get_main_lcore())
- while (rte_atomic32_read(&synchro) == 0);
+ rte_wait_until_equal_32(&synchro, 1, __ATOMIC_RELAXED);
begin = rte_get_timer_cycles();
while (lcount < MAX_LOOP) {
@@ -150,11 +149,11 @@ test_spinlock_perf(void)
printf("\nTest with lock on %u cores...\n", rte_lcore_count());
/* Clear synchro and start workers */
- rte_atomic32_set(&synchro, 0);
+ __atomic_store_n(&synchro, 0, __ATOMIC_RELAXED);
rte_eal_mp_remote_launch(load_loop_fn, &lock, SKIP_MAIN);
/* start synchro and launch test on main */
- rte_atomic32_set(&synchro, 1);
+ __atomic_store_n(&synchro, 1, __ATOMIC_RELAXED);
load_loop_fn(&lock);
rte_eal_mp_wait_lcore();
--
2.17.1
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