[PATCH v2 1/4] usertools: add option to select hugetlbfs directory

[Dmitry Kozlyuk <dkozlyuk@nvidia.com>]

dpdk-hugepages.py had /dev/hugepages hardcoded as the mount point.
It may be desirable to setup hugepage directory at another path,
for example, when using hugepages of multiple sizes in different
directories or when granting different permissions to mount points.
Add --directory/-d option to the script.

Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
---
 usertools/dpdk-hugepages.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/usertools/dpdk-hugepages.py b/usertools/dpdk-hugepages.py
index 4fdb199744..8bab086a2f 100755
--- a/usertools/dpdk-hugepages.py
+++ b/usertools/dpdk-hugepages.py
@@ -228,6 +228,12 @@ def main():
         '-u',
         action='store_true',
         help='unmount the system huge page directory')
+    parser.add_argument(
+        '--directory',
+        '-d',
+        metavar='DIR',
+        default=HUGE_MOUNT,
+        help='mount point')
     parser.add_argument(
         '--node', '-n', help='select numa node to reserve pages on')
     parser.add_argument(
@@ -262,7 +268,7 @@ def main():
     if args.clear:
         clear_pages()
     if args.unmount:
-        umount_huge(HUGE_MOUNT)
+        umount_huge(args.directory)
 
     if args.reserve:
         reserve_kb = get_memsize(args.reserve)
@@ -273,7 +279,7 @@ def main():
         reserve_pages(
             int(reserve_kb / pagesize_kb), pagesize_kb, node=args.node)
     if args.mount:
-        mount_huge(pagesize_kb, HUGE_MOUNT)
+        mount_huge(pagesize_kb, args.directory)
     if args.show:
         show_pages()
         print()
-- 
2.25.1