[dpdk-dev] [PATCH v1 08/12] app/crypto: use compiler atomic builtins for display sync

[Joyce Kong <joyce.kong@arm.com>]

Covert rte_atomic_test_and_set usage to compiler atomic
CAS operation for display sync in crypto cases.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
 app/test-crypto-perf/cperf_test_latency.c        | 6 ++++--
 app/test-crypto-perf/cperf_test_pmd_cyclecount.c | 9 ++++++---
 app/test-crypto-perf/cperf_test_throughput.c     | 9 ++++++---
 app/test-crypto-perf/cperf_test_verify.c         | 9 ++++++---
 4 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/app/test-crypto-perf/cperf_test_latency.c b/app/test-crypto-perf/cperf_test_latency.c
index 159fe8492b..5e73c75fba 100644
--- a/app/test-crypto-perf/cperf_test_latency.c
+++ b/app/test-crypto-perf/cperf_test_latency.c
@@ -126,7 +126,7 @@ cperf_latency_test_runner(void *arg)
 	uint8_t burst_size_idx = 0;
 	uint32_t imix_idx = 0;
 
-	static rte_atomic16_t display_once = RTE_ATOMIC16_INIT(0);
+	static uint16_t display_once;
 
 	if (ctx == NULL)
 		return 0;
@@ -308,7 +308,9 @@ cperf_latency_test_runner(void *arg)
 		time_min = tunit*(double)(tsc_min) / tsc_hz;
 
 		if (ctx->options->csv) {
-			if (rte_atomic16_test_and_set(&display_once))
+			uint16_t exp = 0;
+			if (__atomic_compare_exchange_n(&display_once, &exp, 1, 0,
+					__ATOMIC_RELAXED, __ATOMIC_RELAXED))
 				printf("\n# lcore, Buffer Size, Burst Size, Pakt Seq #, "
 						"cycles, time (us)");
 
diff --git a/app/test-crypto-perf/cperf_test_pmd_cyclecount.c b/app/test-crypto-perf/cperf_test_pmd_cyclecount.c
index 844659aeca..a1de334efb 100644
--- a/app/test-crypto-perf/cperf_test_pmd_cyclecount.c
+++ b/app/test-crypto-perf/cperf_test_pmd_cyclecount.c
@@ -404,7 +404,7 @@ cperf_pmd_cyclecount_test_runner(void *test_ctx)
 	state.lcore = rte_lcore_id();
 	state.linearize = 0;
 
-	static rte_atomic16_t display_once = RTE_ATOMIC16_INIT(0);
+	static uint16_t display_once;
 	static bool warmup = true;
 
 	/*
@@ -449,8 +449,10 @@ cperf_pmd_cyclecount_test_runner(void *test_ctx)
 			continue;
 		}
 
+		uint16_t exp = 0;
 		if (!opts->csv) {
-			if (rte_atomic16_test_and_set(&display_once))
+			if (__atomic_compare_exchange_n(&display_once, &exp, 1, 0,
+					__ATOMIC_RELAXED, __ATOMIC_RELAXED))
 				printf(PRETTY_HDR_FMT, "lcore id", "Buf Size",
 						"Burst Size", "Enqueued",
 						"Dequeued", "Enq Retries",
@@ -466,7 +468,8 @@ cperf_pmd_cyclecount_test_runner(void *test_ctx)
 					state.cycles_per_enq,
 					state.cycles_per_deq);
 		} else {
-			if (rte_atomic16_test_and_set(&display_once))
+			if (__atomic_compare_exchange_n(&display_once, &exp, 1, 0,
+					__ATOMIC_RELAXED, __ATOMIC_RELAXED))
 				printf(CSV_HDR_FMT, "# lcore id", "Buf Size",
 						"Burst Size", "Enqueued",
 						"Dequeued", "Enq Retries",
diff --git a/app/test-crypto-perf/cperf_test_throughput.c b/app/test-crypto-perf/cperf_test_throughput.c
index f6eb8cf259..1407007c6e 100644
--- a/app/test-crypto-perf/cperf_test_throughput.c
+++ b/app/test-crypto-perf/cperf_test_throughput.c
@@ -106,7 +106,7 @@ cperf_throughput_test_runner(void *test_ctx)
 	uint8_t burst_size_idx = 0;
 	uint32_t imix_idx = 0;
 
-	static rte_atomic16_t display_once = RTE_ATOMIC16_INIT(0);
+	static uint16_t display_once;
 
 	struct rte_crypto_op *ops[ctx->options->max_burst_size];
 	struct rte_crypto_op *ops_processed[ctx->options->max_burst_size];
@@ -272,8 +272,10 @@ cperf_throughput_test_runner(void *test_ctx)
 		double cycles_per_packet = ((double)tsc_duration /
 				ctx->options->total_ops);
 
+		uint16_t exp = 0;
 		if (!ctx->options->csv) {
-			if (rte_atomic16_test_and_set(&display_once))
+			if (__atomic_compare_exchange_n(&display_once, &exp, 1, 0,
+					__ATOMIC_RELAXED, __ATOMIC_RELAXED))
 				printf("%12s%12s%12s%12s%12s%12s%12s%12s%12s%12s\n\n",
 					"lcore id", "Buf Size", "Burst Size",
 					"Enqueued", "Dequeued", "Failed Enq",
@@ -293,7 +295,8 @@ cperf_throughput_test_runner(void *test_ctx)
 					throughput_gbps,
 					cycles_per_packet);
 		} else {
-			if (rte_atomic16_test_and_set(&display_once))
+			if (__atomic_compare_exchange_n(&display_once, &exp, 1, 0,
+					__ATOMIC_RELAXED, __ATOMIC_RELAXED))
 				printf("#lcore id,Buffer Size(B),"
 					"Burst Size,Enqueued,Dequeued,Failed Enq,"
 					"Failed Deq,Ops(Millions),Throughput(Gbps),"
diff --git a/app/test-crypto-perf/cperf_test_verify.c b/app/test-crypto-perf/cperf_test_verify.c
index 2939aeaa93..0c053ad3c0 100644
--- a/app/test-crypto-perf/cperf_test_verify.c
+++ b/app/test-crypto-perf/cperf_test_verify.c
@@ -241,7 +241,7 @@ cperf_verify_test_runner(void *test_ctx)
 	uint64_t ops_deqd = 0, ops_deqd_total = 0, ops_deqd_failed = 0;
 	uint64_t ops_failed = 0;
 
-	static rte_atomic16_t display_once = RTE_ATOMIC16_INIT(0);
+	static uint16_t display_once;
 
 	uint64_t i;
 	uint16_t ops_unused = 0;
@@ -383,8 +383,10 @@ cperf_verify_test_runner(void *test_ctx)
 		ops_deqd_total += ops_deqd;
 	}
 
+	uint16_t exp = 0;
 	if (!ctx->options->csv) {
-		if (rte_atomic16_test_and_set(&display_once))
+		if (__atomic_compare_exchange_n(&display_once, &exp, 1, 0,
+				__ATOMIC_RELAXED, __ATOMIC_RELAXED))
 			printf("%12s%12s%12s%12s%12s%12s%12s%12s\n\n",
 				"lcore id", "Buf Size", "Burst size",
 				"Enqueued", "Dequeued", "Failed Enq",
@@ -401,7 +403,8 @@ cperf_verify_test_runner(void *test_ctx)
 				ops_deqd_failed,
 				ops_failed);
 	} else {
-		if (rte_atomic16_test_and_set(&display_once))
+		if (__atomic_compare_exchange_n(&display_once, &exp, 1, 0,
+				__ATOMIC_RELAXED, __ATOMIC_RELAXED))
 			printf("\n# lcore id, Buffer Size(B), "
 				"Burst Size,Enqueued,Dequeued,Failed Enq,"
 				"Failed Deq,Failed Ops\n");
-- 
2.17.1