UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

net/mlx5: Do not hold mutex while reading table constants 

Table max_size, min and max rate are constants initialized while table
is created. Reading it doesn't need to hold a table mutex. Hence, read
them without holding table mutex.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Parav Pandit 2021-02-24 11:04:19 +02:00 committed by Saeed Mahameed
parent 4c4c0a89ab
commit 16e74672a2
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/ethernet/mellanox/mlx5/core/rl.c
View File

@ -180,16 +180,18 @@ int mlx5_rl_add_rate_raw(struct mlx5_core_dev *dev, void *rl_in, u16 uid,
int err = 0;
u32 rate;
rate = MLX5_GET(set_pp_rate_limit_context, rl_in, rate_limit);
mutex_lock(&table->rl_lock);
if (!table->max_size)
return -EOPNOTSUPP;
rate = MLX5_GET(set_pp_rate_limit_context, rl_in, rate_limit);
if (!rate || !mlx5_rl_is_in_range(dev, rate)) {
mlx5_core_err(dev, "Invalid rate: %u, should be %u to %u\n",
rate, table->min_rate, table->max_rate);
err = -EINVAL;
goto out;
return -EINVAL;
}
mutex_lock(&table->rl_lock);
entry = find_rl_entry(table, rl_in, uid, dedicated_entry);
if (!entry) {
mlx5_core_err(dev, "Max number of %u rates reached\n",