From 72afcf82477a58f40d748271a4a78755983203ef Mon Sep 17 00:00:00 2001 From: Mark Bloch Date: Mon, 22 Jan 2018 15:29:44 +0000 Subject: [PATCH] IB/mlx5: Don't expose MR cache in switchdev mode When enabling many VFs and switching to switchdev mode, the total amount of mkeys we try to allocate when loading representors is very large and may cause timeouts on allocations, the same issues was observed on VFs and we employ the same fix that was done for them. We avoid allocating the full MR cache on load but still allow it to be manipulated once the IB device is loaded. Signed-off-by: Mark Bloch Signed-off-by: Leon Romanovsky Signed-off-by: Saeed Mahameed --- drivers/infiniband/hw/mlx5/mr.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 556e015678de..a5fad3e87ff7 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -587,7 +587,7 @@ static void clean_keys(struct mlx5_ib_dev *dev, int c) static void mlx5_mr_cache_debugfs_cleanup(struct mlx5_ib_dev *dev) { - if (!mlx5_debugfs_root) + if (!mlx5_debugfs_root || dev->rep) return; debugfs_remove_recursive(dev->cache.root); @@ -600,7 +600,7 @@ static int mlx5_mr_cache_debugfs_init(struct mlx5_ib_dev *dev) struct mlx5_cache_ent *ent; int i; - if (!mlx5_debugfs_root) + if (!mlx5_debugfs_root || dev->rep) return 0; cache->root = debugfs_create_dir("mr_cache", dev->mdev->priv.dbg_root); @@ -690,6 +690,7 @@ int mlx5_mr_cache_init(struct mlx5_ib_dev *dev) MLX5_IB_UMR_OCTOWORD; ent->access_mode = MLX5_MKC_ACCESS_MODE_MTT; if ((dev->mdev->profile->mask & MLX5_PROF_MASK_MR_CACHE) && + !dev->rep && mlx5_core_is_pf(dev->mdev)) ent->limit = dev->mdev->profile->mr_cache[i].limit; else -- 2.45.2