[PATCH 5.0 014/117] net/mlx5: Decrease default mr cache size

Greg Kroah-Hartman
2019-04-15T19:10:30Z

[ 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: Sasha Levin <sashal@kernel.org>
---
.../net/ethernet/mellanox/mlx5/core/main.c | 20 -------------------
1 file changed, 20 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index be81b319b0dc..694edd899322 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -163,26 +163,6 @@ 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
- },
},
};

--
2.19.1