mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
net/mlx5: Let user configure io_eq_size param
Currently, each I/O EQ is taking 128KB of memory. This size is not needed in all use cases, and is critical with large scale. Hence, allow user to configure the size of I/O EQs. For example, to reduce I/O EQ size to 64, execute: $ devlink dev param set pci/0000:00:0b.0 name io_eq_size value 64 \ cmode driverinit $ devlink dev reload pci/0000:00:0b.0 Signed-off-by: Shay Drory <shayd@nvidia.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
parent
47402385d0
commit
0844fa5f7b
@ -14,8 +14,12 @@ Parameters
|
||||
|
||||
* - Name
|
||||
- Mode
|
||||
- Validation
|
||||
* - ``enable_roce``
|
||||
- driverinit
|
||||
* - ``io_eq_size``
|
||||
- driverinit
|
||||
- The range is between 64 and 4096.
|
||||
|
||||
The ``mlx5`` driver also implements the following driver-specific
|
||||
parameters.
|
||||
|
@ -546,6 +546,13 @@ static int mlx5_devlink_enable_remote_dev_reset_get(struct devlink *devlink, u32
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int mlx5_devlink_eq_depth_validate(struct devlink *devlink, u32 id,
|
||||
union devlink_param_value val,
|
||||
struct netlink_ext_ack *extack)
|
||||
{
|
||||
return (val.vu16 >= 64 && val.vu16 <= 4096) ? 0 : -EINVAL;
|
||||
}
|
||||
|
||||
static const struct devlink_param mlx5_devlink_params[] = {
|
||||
DEVLINK_PARAM_DRIVER(MLX5_DEVLINK_PARAM_ID_FLOW_STEERING_MODE,
|
||||
"flow_steering_mode", DEVLINK_PARAM_TYPE_STRING,
|
||||
@ -570,6 +577,8 @@ static const struct devlink_param mlx5_devlink_params[] = {
|
||||
DEVLINK_PARAM_GENERIC(ENABLE_REMOTE_DEV_RESET, BIT(DEVLINK_PARAM_CMODE_RUNTIME),
|
||||
mlx5_devlink_enable_remote_dev_reset_get,
|
||||
mlx5_devlink_enable_remote_dev_reset_set, NULL),
|
||||
DEVLINK_PARAM_GENERIC(IO_EQ_SIZE, BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
|
||||
NULL, NULL, mlx5_devlink_eq_depth_validate),
|
||||
};
|
||||
|
||||
static void mlx5_devlink_set_params_init_values(struct devlink *devlink)
|
||||
@ -608,6 +617,11 @@ static void mlx5_devlink_set_params_init_values(struct devlink *devlink)
|
||||
value);
|
||||
}
|
||||
#endif
|
||||
|
||||
value.vu32 = MLX5_COMP_EQ_SIZE;
|
||||
devlink_param_driverinit_value_set(devlink,
|
||||
DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
|
||||
value);
|
||||
}
|
||||
|
||||
static const struct devlink_param enable_eth_param =
|
||||
|
@ -19,6 +19,7 @@
|
||||
#include "lib/clock.h"
|
||||
#include "diag/fw_tracer.h"
|
||||
#include "mlx5_irq.h"
|
||||
#include "devlink.h"
|
||||
|
||||
enum {
|
||||
MLX5_EQE_OWNER_INIT_VAL = 0x1,
|
||||
@ -796,6 +797,21 @@ static void destroy_comp_eqs(struct mlx5_core_dev *dev)
|
||||
}
|
||||
}
|
||||
|
||||
static u16 comp_eq_depth_devlink_param_get(struct mlx5_core_dev *dev)
|
||||
{
|
||||
struct devlink *devlink = priv_to_devlink(dev);
|
||||
union devlink_param_value val;
|
||||
int err;
|
||||
|
||||
err = devlink_param_driverinit_value_get(devlink,
|
||||
DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
|
||||
&val);
|
||||
if (!err)
|
||||
return val.vu32;
|
||||
mlx5_core_dbg(dev, "Failed to get param. using default. err = %d\n", err);
|
||||
return MLX5_COMP_EQ_SIZE;
|
||||
}
|
||||
|
||||
static int create_comp_eqs(struct mlx5_core_dev *dev)
|
||||
{
|
||||
struct mlx5_eq_table *table = dev->priv.eq_table;
|
||||
@ -807,7 +823,7 @@ static int create_comp_eqs(struct mlx5_core_dev *dev)
|
||||
|
||||
INIT_LIST_HEAD(&table->comp_eqs_list);
|
||||
ncomp_eqs = table->num_comp_eqs;
|
||||
nent = MLX5_COMP_EQ_SIZE;
|
||||
nent = comp_eq_depth_devlink_param_get(dev);
|
||||
for (i = 0; i < ncomp_eqs; i++) {
|
||||
struct mlx5_eq_param param = {};
|
||||
int vecidx = i;
|
||||
|
Loading…
Reference in New Issue
Block a user