[dpdk-dev] [PATCH v1 01/12] test/pmd_perf: use compiler atomic builtins for polling sync
Joyce Kong
joyce.kong at arm.com
Mon Aug 2 12:18:36 CEST 2021
Convert rte_atomic usages to compiler atomic built-ins
for polling sync in pmd_perf test cases.
Signed-off-by: Joyce Kong <joyce.kong at arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
---
app/test/test_pmd_perf.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/app/test/test_pmd_perf.c b/app/test/test_pmd_perf.c
index 3a248d512c..41ef001b90 100644
--- a/app/test/test_pmd_perf.c
+++ b/app/test/test_pmd_perf.c
@@ -10,7 +10,6 @@
#include <rte_cycles.h>
#include <rte_ethdev.h>
#include <rte_byteorder.h>
-#include <rte_atomic.h>
#include <rte_malloc.h>
#include "packet_burst_generator.h"
#include "test.h"
@@ -526,7 +525,7 @@ main_loop(__rte_unused void *args)
return 0;
}
-static rte_atomic64_t start;
+static uint64_t start;
static inline int
poll_burst(void *args)
@@ -564,8 +563,7 @@ poll_burst(void *args)
num[portid] = pkt_per_port;
}
- while (!rte_atomic64_read(&start))
- ;
+ rte_wait_until_equal_64(&start, 1, __ATOMIC_RELAXED);
cur_tsc = rte_rdtsc();
while (total) {
@@ -617,7 +615,7 @@ exec_burst(uint32_t flags, int lcore)
pkt_per_port = MAX_TRAFFIC_BURST;
num = pkt_per_port * conf->nb_ports;
- rte_atomic64_init(&start);
+ __atomic_store_n(&start, 0, __ATOMIC_RELAXED);
/* start polling thread, but not actually poll yet */
rte_eal_remote_launch(poll_burst,
@@ -625,7 +623,7 @@ exec_burst(uint32_t flags, int lcore)
/* Only when polling first */
if (flags == SC_BURST_POLL_FIRST)
- rte_atomic64_set(&start, 1);
+ __atomic_store_n(&start, 1, __ATOMIC_RELAXED);
/* start xmit */
i = 0;
@@ -642,7 +640,7 @@ exec_burst(uint32_t flags, int lcore)
/* only when polling second */
if (flags == SC_BURST_XMIT_FIRST)
- rte_atomic64_set(&start, 1);
+ __atomic_store_n(&start, 1, __ATOMIC_RELAXED);
/* wait for polling finished */
diff_tsc = rte_eal_wait_lcore(lcore);
--
2.17.1
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