[PATCH v5] app/testpmd: add help messages for multi-process

["Min Hu (Connor)" <humin29@huawei.com>]

From: Huisong Li <lihuisong@huawei.com>

This patch adds help messages for multi-process.
--num-procs=N: set the total number of multi-process instances
--proc-id=id:  set the id of the current process from multi-process
instances(0 <= id < num-procs)

Fixes: a550baf24af9 ("app/testpmd: support multi-process")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
v6:
* fix comments.
v5:
* delete space
v4:
* update description for parameters.
v3,v2:
* adjust the position of parameters.
---
 app/test-pmd/parameters.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index daf6a31b2b..2834e9e180 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -61,6 +61,9 @@ usage(char* progname)
 	       "extended statistics to show. Used with --stats-period "
 	       "specified or interactive commands that show Rx/Tx statistics "
 	       "(i.e. 'show port stats').\n");
+	printf("  --num-procs=N: set the total number of multi-process instances\n");
+	printf("  --proc-id=id:  set the id of the current process from multi-process instances\n"
+	       "(0 <= id < num-procs).\n");
 	printf("  --nb-cores=N: set the number of forwarding cores "
 	       "(1 <= N <= %d).\n", nb_lcores);
 	printf("  --nb-ports=N: set the number of forwarding ports "
-- 
2.33.0