Re: [dpdk-stable] [PATCH v3 1/3] test/test/mempool_perf: Remove mempool global vars

[santosh <santosh.shukla@caviumnetworks.com>]

Hi Olivier,

On Tuesday 18 April 2017 07:12 PM, Olivier MATZ wrote:

> Hi Santosh,
>
> On Tue, 18 Apr 2017 14:04:46 +0530, Santosh Shukla <santosh.shukla@caviumnetworks.com> wrote:
>> Cc: stable@dpdk.org
>> Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
>> ---
>> v3:
>>  - Cleanup code change as per discussion in 
>>    http://dpdk.org/dev/patchwork/patch/23262/
>>
>>  test/test/test_mempool_perf.c | 61 ++++++++++++++++++++++---------------------
>>  1 file changed, 31 insertions(+), 30 deletions(-)
>>
>> diff --git a/test/test/test_mempool_perf.c b/test/test/test_mempool_perf.c
>> index ebf1721ac..213fcba5d 100644
>> --- a/test/test/test_mempool_perf.c
>> +++ b/test/test/test_mempool_perf.c
>> @@ -109,8 +109,6 @@
>>  		goto label;						\
>>  	} while (0)
>>  
>> -static struct rte_mempool *mp;
>> -static struct rte_mempool *mp_cache, *mp_nocache;
>>  static int use_external_cache;
>>  static unsigned external_cache_size = RTE_MEMPOOL_CACHE_MAX_SIZE;
>>  
>> @@ -144,10 +142,11 @@ my_obj_init(struct rte_mempool *mp, __attribute__((unused)) void *arg,
>>  }
>>  
>>  static int
>> -per_lcore_mempool_test(__attribute__((unused)) void *arg)
>> +per_lcore_mempool_test(void *arg)
>>  {
>>  	void *obj_table[MAX_KEEP];
>>  	unsigned i, idx;
>> +	struct rte_mempool *mp = (struct rte_mempool *)arg;
> as a nit: the cast is not required.
>
Will consider in v4.

>>  	unsigned lcore_id = rte_lcore_id();
>>  	int ret = 0;
>>  	uint64_t start_cycles, end_cycles;
>> @@ -221,7 +220,7 @@ per_lcore_mempool_test(__attribute__((unused)) void *arg)
>>  
>>  /* launch all the per-lcore test, and display the result */
>>  static int
>> -launch_cores(unsigned cores)
>> +launch_cores(struct rte_mempool *mp, unsigned cores)
>>  {
>>  	unsigned lcore_id;
>>  	uint64_t rate;
>> @@ -249,13 +248,13 @@ launch_cores(unsigned cores)
>>  			break;
>>  		cores--;
>>  		rte_eal_remote_launch(per_lcore_mempool_test,
>> -				      NULL, lcore_id);
>> +				      mp, lcore_id);
>>  	}
>>  
>>  	/* start synchro and launch test on master */
>>  	rte_atomic32_set(&synchro, 1);
>>  
>> -	ret = per_lcore_mempool_test(NULL);
>> +	ret = per_lcore_mempool_test(mp);
>>  
>>  	cores = cores_save;
>>  	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
>> @@ -282,7 +281,7 @@ launch_cores(unsigned cores)
>>  
>>  /* for a given number of core, launch all test cases */
>>  static int
>> -do_one_mempool_test(unsigned cores)
>> +do_one_mempool_test(struct rte_mempool *mp, unsigned cores)
>>  {
>>  	unsigned bulk_tab_get[] = { 1, 4, 32, 0 };
>>  	unsigned bulk_tab_put[] = { 1, 4, 32, 0 };
>> @@ -299,7 +298,7 @@ do_one_mempool_test(unsigned cores)
>>  				n_get_bulk = *get_bulk_ptr;
>>  				n_put_bulk = *put_bulk_ptr;
>>  				n_keep = *keep_ptr;
>> -				ret = launch_cores(cores);
>> +				ret = launch_cores(mp, cores);
>>  
>>  				if (ret < 0)
>>  					return -1;
>> @@ -312,26 +311,28 @@ do_one_mempool_test(unsigned cores)
>>  static int
>>  test_mempool_perf(void)
>>  {
>> +	struct rte_mempool *mp = NULL;
>> +	struct rte_mempool *mp_cache = NULL;
>> +	struct rte_mempool *mp_nocache = NULL;
>> +
>>  	rte_atomic32_init(&synchro);
>>  
>>  	/* create a mempool (without cache) */
>> -	if (mp_nocache == NULL)
>> -		mp_nocache = rte_mempool_create("perf_test_nocache", MEMPOOL_SIZE,
>> -						MEMPOOL_ELT_SIZE, 0, 0,
>> -						NULL, NULL,
>> -						my_obj_init, NULL,
>> -						SOCKET_ID_ANY, 0);
>> +	mp_nocache = rte_mempool_create("perf_test_nocache", MEMPOOL_SIZE,
>> +					MEMPOOL_ELT_SIZE, 0, 0,
>> +					NULL, NULL,
>> +					my_obj_init, NULL,
>> +					SOCKET_ID_ANY, 0);
>>  	if (mp_nocache == NULL)
>>  		return -1;
>>  
>>  	/* create a mempool (with cache) */
>> -	if (mp_cache == NULL)
>> -		mp_cache = rte_mempool_create("perf_test_cache", MEMPOOL_SIZE,
>> -					      MEMPOOL_ELT_SIZE,
>> -					      RTE_MEMPOOL_CACHE_MAX_SIZE, 0,
>> -					      NULL, NULL,
>> -					      my_obj_init, NULL,
>> -					      SOCKET_ID_ANY, 0);
>> +	mp_cache = rte_mempool_create("perf_test_cache", MEMPOOL_SIZE,
>> +				      MEMPOOL_ELT_SIZE,
>> +				      RTE_MEMPOOL_CACHE_MAX_SIZE, 0,
>> +				      NULL, NULL,
>> +				      my_obj_init, NULL,
>> +				      SOCKET_ID_ANY, 0);
>>  	if (mp_cache == NULL)
>>  		return -1;
>>  
>> @@ -339,26 +340,26 @@ test_mempool_perf(void)
>>  	printf("start performance test (without cache)\n");
>>  	mp = mp_nocache;
>>  
>> -	if (do_one_mempool_test(1) < 0)
>> +	if (do_one_mempool_test(mp, 1) < 0)
>>  		return -1;
> We could even do shorter: the mp variable can probably be removed, and
> directly replaced by mp_nocache or mp_cache in function calls.

In v4.

Thanks,
Santosh

>
> Thanks,
> Olivier