From 4e3d677ba986d5c8e76ee1742c1d4d79bc197d5c Mon Sep 17 00:00:00 2001 From: Moshe Lazer Date: Wed, 23 Oct 2013 09:53:21 +0300 Subject: [PATCH] mlx5_core: Change optimal_reclaimed_pages for better performance Change optimal_reclaimed_pages() to increase the output size of each reclaim pages command. This change reduces significantly the amount of reclaim pages commands issued to FW when the driver is unloaded which reduces the overall driver unload time. Signed-off-by: Moshe Lazer Signed-off-by: Eli Cohen Signed-off-by: Roland Dreier --- drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c index 013aa422adee..ba816c25c5c1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c @@ -454,14 +454,19 @@ int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev, int boot) return give_pages(dev, func_id, npages, 0); } +enum { + MLX5_BLKS_FOR_RECLAIM_PAGES = 12 +}; + static int optimal_reclaimed_pages(void) { struct mlx5_cmd_prot_block *block; struct mlx5_cmd_layout *lay; int ret; - ret = (sizeof(lay->in) + sizeof(block->data) - - sizeof(struct mlx5_manage_pages_outbox)) / 8; + ret = (sizeof(lay->out) + MLX5_BLKS_FOR_RECLAIM_PAGES * sizeof(block->data) - + sizeof(struct mlx5_manage_pages_outbox)) / + FIELD_SIZEOF(struct mlx5_manage_pages_outbox, pas[0]); return ret; } -- 2.20.1