Re: [dpdk-stable] [PATCH v1] test/func_reentrancy: free memzones after creating test case

[Olivier Matz <olivier.matz@6wind.com>]

Hi Joyce,

On Wed, Jul 28, 2021 at 02:33:22AM -0500, Joyce Kong wrote:
> Function reentrancy test limits maximum number of iterations
> simultaneously, however it doesn't free the 'fr_test_once'
> memzones after the fact, so introduce freeing 'fr_test_once'
> in ring/mempool/hash/fbk/lpm_clean.
> 
> Fixes: 104a92bd026f ("app: add reentrancy tests")
> Fixes: 995eec619024 ("test: clean up memory for function reentrancy test")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Joyce Kong <joyce.kong@arm.com>
> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
> Reviewed-by: Feifei Wang <feifei.wang2@arm.com>
> ---
>  app/test/test_func_reentrancy.c | 24 +++++++++++++++++++++++-
>  1 file changed, 23 insertions(+), 1 deletion(-)
> 
> diff --git a/app/test/test_func_reentrancy.c b/app/test/test_func_reentrancy.c
> index 231c99a9eb..e4e9c2cc7c 100644
> --- a/app/test/test_func_reentrancy.c
> +++ b/app/test/test_func_reentrancy.c
> @@ -89,6 +89,10 @@ ring_clean(unsigned int lcore_id)
>  	char ring_name[MAX_STRING_SIZE];
>  	int i;
>  
> +	rp = rte_ring_lookup("fr_test_once");
> +	if (rp != NULL)
> +		rte_ring_free(rp);
> +
>  	for (i = 0; i < MAX_ITER_MULTI; i++) {
>  		snprintf(ring_name, sizeof(ring_name),
>  				"fr_test_%d_%d", lcore_id, i);
> @@ -148,7 +152,10 @@ mempool_clean(unsigned int lcore_id)
>  	char mempool_name[MAX_STRING_SIZE];
>  	int i;
>  
> -	/* verify all ring created successful */
> +	mp = rte_mempool_lookup("fr_test_once");
> +	if (mp != NULL)
> +		rte_mempool_free(mp);
> +
>  	for (i = 0; i < MAX_ITER_MULTI; i++) {
>  		snprintf(mempool_name, sizeof(mempool_name), "fr_test_%d_%d",
>  			 lcore_id, i);
> @@ -208,6 +215,10 @@ hash_clean(unsigned lcore_id)
>  	struct rte_hash *handle;
>  	int i;
>  
> +	handle = rte_hash_find_existing("fr_test_once");
> +	if (handle != NULL)
> +		rte_hash_free(handle);
> +
>  	for (i = 0; i < MAX_ITER_MULTI; i++) {
>  		snprintf(hash_name, sizeof(hash_name), "fr_test_%d_%d",  lcore_id, i);
>  
> @@ -272,6 +283,10 @@ fbk_clean(unsigned lcore_id)
>  	struct rte_fbk_hash_table *handle;
>  	int i;
>  
> +	handle = rte_fbk_hash_find_existing("fr_test_once");
> +	if (handle != NULL)
> +		rte_fbk_hash_free(handle);
> +
>  	for (i = 0; i < MAX_ITER_MULTI; i++) {
>  		snprintf(fbk_name, sizeof(fbk_name), "fr_test_%d_%d",  lcore_id, i);
>  
> @@ -338,6 +353,10 @@ lpm_clean(unsigned int lcore_id)
>  	struct rte_lpm *lpm;
>  	int i;
>  
> +	lpm = rte_lpm_find_existing("fr_test_once");
> +	if (lpm != NULL)
> +		rte_lpm_free(lpm);
> +
>  	for (i = 0; i < MAX_LPM_ITER_TIMES; i++) {
>  		snprintf(lpm_name, sizeof(lpm_name), "fr_test_%d_%d",  lcore_id, i);
>  
> @@ -454,6 +473,9 @@ launch_test(struct test_case *pt_case)
>  			pt_case->clean(lcore_id);
>  	}
>  
> +	if (pt_case->clean != NULL)
> +		pt_case->clean(rte_get_main_lcore());
> +

Is it the same issue? It looks it adds the missing frees for the main thread
(not only "fr_test_once"). I don't think it requires another patch, but a word
could be added about it in the commit log.


>  	count = rte_atomic32_read(&obj_count);
>  	if (count != 1) {
>  		printf("%s: common object allocated %d times (should be 1)\n",
> -- 
> 2.17.1
>