Re: [PATCH v2 04/16] test/bbdev: add timeout for latency tests

[Maxime Coquelin <maxime.coquelin@redhat.com>]

On 2/15/23 18:09, Hernan Vargas wrote:
> Add a timeout to force exit the latency tests in case dequeue never
> happens.
> 
> Signed-off-by: Hernan Vargas <hernan.vargas@intel.com>
> ---
>   app/test-bbdev/test_bbdev_perf.c | 24 +++++++++++++++++++-----
>   1 file changed, 19 insertions(+), 5 deletions(-)
> 
> diff --git a/app/test-bbdev/test_bbdev_perf.c b/app/test-bbdev/test_bbdev_perf.c
> index 19b9a5b119..dede0f900e 100644
> --- a/app/test-bbdev/test_bbdev_perf.c
> +++ b/app/test-bbdev/test_bbdev_perf.c
> @@ -26,6 +26,7 @@
>   
>   #define MAX_QUEUES RTE_MAX_LCORE
>   #define TEST_REPETITIONS 100
> +#define TIME_OUT_POLL 1e8
>   #define WAIT_OFFLOAD_US 1000
>   
>   #ifdef RTE_BASEBAND_FPGA_LTE_FEC
> @@ -4546,6 +4547,7 @@ latency_test_ldpc_dec(struct rte_mempool *mempool,
>   
>   	for (i = 0, dequeued = 0; dequeued < num_to_process; ++i) {
>   		uint16_t enq = 0, deq = 0;
> +		uint32_t time_out = 0;
>   		bool first_time = true;
>   		last_time = 0;
>   
> @@ -4597,7 +4599,8 @@ latency_test_ldpc_dec(struct rte_mempool *mempool,
>   				last_time = rte_rdtsc_precise() - start_time;
>   				first_time = false;
>   			}
> -		} while (unlikely(burst_sz != deq));
> +			time_out++;
> +		} while ((burst_sz != deq) && (time_out < TIME_OUT_POLL));
>   
>   		*max_time = RTE_MAX(*max_time, last_time);
>   		*min_time = RTE_MIN(*min_time, last_time);
> @@ -4606,7 +4609,12 @@ latency_test_ldpc_dec(struct rte_mempool *mempool,
>   		if (extDdr)
>   			retrieve_harq_ddr(dev_id, queue_id, ops_enq, burst_sz);
>   
> -		if (test_vector.op_type != RTE_BBDEV_OP_NONE) {
> +		if (burst_sz != deq) {
> +			struct rte_bbdev_info info;
> +			ret = TEST_FAILED;
> +			rte_bbdev_info_get(dev_id, &info);

What is the point of calling rte_bbdev_info_get() here and below?
info is not used afterwards.

> +			TEST_ASSERT_SUCCESS(ret, "Dequeue timeout!");
> +		} else if (test_vector.op_type != RTE_BBDEV_OP_NONE) {
>   			ret = validate_ldpc_dec_op(ops_deq, burst_sz, ref_op,
>   					vector_mask);
>   			TEST_ASSERT_SUCCESS(ret, "Validation failed!");
> @@ -4632,6 +4640,7 @@ latency_test_enc(struct rte_mempool *mempool,
>   
>   	for (i = 0, dequeued = 0; dequeued < num_to_process; ++i) {
>   		uint16_t enq = 0, deq = 0;
> +		uint32_t time_out = 0;
>   		bool first_time = true;
>   		last_time = 0;
>   
> @@ -4667,13 +4676,18 @@ latency_test_enc(struct rte_mempool *mempool,
>   				last_time += rte_rdtsc_precise() - start_time;
>   				first_time = false;
>   			}
> -		} while (unlikely(burst_sz != deq));
> +			time_out++;
> +		} while ((burst_sz != deq) && (time_out < TIME_OUT_POLL));
>   
>   		*max_time = RTE_MAX(*max_time, last_time);
>   		*min_time = RTE_MIN(*min_time, last_time);
>   		*total_time += last_time;
> -
> -		if (test_vector.op_type != RTE_BBDEV_OP_NONE) {
> +		if (burst_sz != deq) {
> +			struct rte_bbdev_info info;
> +			ret = TEST_FAILED;
> +			rte_bbdev_info_get(dev_id, &info);

Same here.

> +			TEST_ASSERT_SUCCESS(ret, "Dequeue timeout!");
> +		} else if (test_vector.op_type != RTE_BBDEV_OP_NONE) {
>   			ret = validate_enc_op(ops_deq, burst_sz, ref_op);
>   			TEST_ASSERT_SUCCESS(ret, "Validation failed!");
>   		}