[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>, where N is the total number of symmetric_mp instances
that will be run side-by-side to perform packet processing. This parameter
is used to configure the appropriate number of receive queues on each
network port.

--proc-id <n>, where n is a numeric value in the range 0 <= n < N (number
of processes, specified above). This identifies which symmetric_mp instance
is being run, so that each process can read a unique receive queue on each
network port.

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>
---
v5:
* delete space
v4:
* update description for parameters.
v3,v2:
* adjust the position of parameters.
---
 app/test-pmd/parameters.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index daf6a31b2b..6c4253ae61 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -61,6 +61,8 @@ 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: the total number of symmetric_mp instances that will be run side-by-side\n");
+	printf("  --proc-id: the id of the current process (id < num-procs) to identify which symmetric_mp instance is being run\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