net/mlx5: Decrease default mr cache size

BugLink: https://bugs.launchpad.net/bugs/1838116
[ Upstream commit e8b26b2135dedc0284490bfeac06dfc4418d0105 ]

Delete initialization of high order entries in mr cache to decrease initial
memory footprint. When required, the administrator can populate the
entries with memory keys via the /sys interface.

This approach is very helpful to significantly reduce the per HW function
memory footprint in virtualization environments such as SRIOV.

Fixes: 9603b61de1ee ("mlx5: Move pci device handling from mlx5_ib to mlx5_core")
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reported-by:  Shalom Toledo <shalomt@mellanox.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 6219f5431fcac269f47c79f2c29f0a09fedfc00c..3a2e41d4de237057792e414b669495eb591ee2e1 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -156,26 +156,6 @@ static struct mlx5_profile profile[] = {
                        .size   = 8,
                        .limit  = 4
                },
-               .mr_cache[16]   = {
-                       .size   = 8,
-                       .limit  = 4
-               },
-               .mr_cache[17]   = {
-                       .size   = 8,
-                       .limit  = 4
-               },
-               .mr_cache[18]   = {
-                       .size   = 8,
-                       .limit  = 4
-               },
-               .mr_cache[19]   = {
-                       .size   = 4,
-                       .limit  = 2
-               },
-               .mr_cache[20]   = {
-                       .size   = 4,
-                       .limit  = 2
-               },
        },
 };