From: Joyce Kong <joyce.kong@arm.com>
Date: Tue, 20 Jul 2021 03:51:19 +0000 (-0500)
Subject: test/spinlock: use compile atomics for lcores sync
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=d2794d6719db49ede1370d1be2d56bd96d73c418;p=dpdk.git

test/spinlock: use compile atomics for lcores sync

Convert rte_atomic usages to compiler atomic built-ins for lcores
sync in spinlock testcases.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
---

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();