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From: Joyce Kong <joyce.kong@arm.com>
To: thomas@monjalon.net, david.marchand@redhat.com,
honnappa.nagarahalli@arm.com, ruifeng.wang@arm.com
Cc: dev@dpdk.org,
nd@arm.com
Date: Wed, 21 Apr 2021 02:17:33 -0500
Message-Id: <20210421071733.17794-1-joyce.kong@arm.com>
X-Mailer: git-send-email 2.17.1
Subject: [dpdk-dev] [PATCH v1] test/ticketlock: use C11 atomic builtins for
lcores sync
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Convert rte_atomic usages to C11 atomic builtins for lcores sync
in ticketlock testcases.
Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
app/test/test_ticketlock.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/app/test/test_ticketlock.c b/app/test/test_ticketlock.c
index 7aab8665b..9aa212fa9 100644
--- a/app/test/test_ticketlock.c
+++ b/app/test/test_ticketlock.c
@@ -9,7 +9,6 @@
#include <sys/queue.h>
#include <unistd.h>
-#include <rte_atomic.h>
#include <rte_common.h>
#include <rte_cycles.h>
#include <rte_eal.h>
@@ -49,7 +48,7 @@ static rte_ticketlock_t tl_tab[RTE_MAX_LCORE];
static rte_ticketlock_recursive_t tlr;
static unsigned int count;
-static rte_atomic32_t synchro;
+static uint32_t synchro;
static int
test_ticketlock_per_core(__rte_unused void *arg)
@@ -112,7 +111,7 @@ load_loop_fn(void *func_param)
/* wait synchro for workers */
if (lcore != rte_get_main_lcore())
- while (rte_atomic32_read(&synchro) == 0)
+ while (__atomic_load_n(&synchro, __ATOMIC_RELAXED) == 0)
;
begin = rte_rdtsc_precise();
@@ -155,11 +154,11 @@ test_ticketlock_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