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net/mlx5: Expose uar access and odp page fault counters 

Add three counters to vnic health reporter:
bar_uar_access, odp_local_triggered_page_fault, and
odp_remote_triggered_page_fault.

- bar_uar_access
    number of WRITE or READ access operations to the UAR on the PCIe
    BAR.
- odp_local_triggered_page_fault
    number of locally-triggered page-faults due to ODP.
- odp_remote_triggered_page_fault
    number of remotly-triggered page-faults due to ODP.

Example access:
    $ devlink health diagnose pci/0000:08:00.0 reporter vnic
	vNIC env counters:
	total_error_queues: 0 send_queue_priority_update_flow: 0
	comp_eq_overrun: 0 async_eq_overrun: 0 cq_overrun: 0
	invalid_command: 0 quota_exceeded_command: 0
	nic_receive_steering_discard: 0 icm_consumption: 1032
	bar_uar_access: 1279 odp_local_triggered_page_fault: 20
	odp_remote_triggered_page_fault: 34

Signed-off-by: Akiva Goldberger <agoldberger@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1758797130-829564-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Akiva Goldberger 2025-09-25 13:45:30 +03:00 committed by Jakub Kicinski
parent 1493c18fe8
commit e835faaed2
2 changed files with 15 additions and 0 deletions
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6
Documentation/networking/devlink/mlx5.rst
View File

@ -385,6 +385,12 @@ Description of the vnic counters:
amount of Interconnect Host Memory (ICM) consumed by the vnic in
granularity of 4KB. ICM is host memory allocated by SW upon HCA request
and is used for storing data structures that control HCA operation.
- bar_uar_access
number of WRITE or READ access operations to the UAR on the PCIe BAR.
- odp_local_triggered_page_fault
number of locally-triggered page-faults due to ODP.
- odp_remote_triggered_page_fault
number of remotly-triggered page-faults due to ODP.
User commands examples:

9
drivers/net/ethernet/mellanox/mlx5/core/diag/reporter_vnic.c
View File

@ -107,6 +107,15 @@ void mlx5_reporter_vnic_diagnose_counters(struct mlx5_core_dev *dev,
}
if (MLX5_CAP_GEN(dev, nic_cap_reg))
mlx5_reporter_vnic_diagnose_counter_icm(dev, fmsg, vport_num, other_vport);
if (MLX5_CAP_GEN(dev, vnic_env_cnt_bar_uar_access))
devlink_fmsg_u32_pair_put(fmsg, "bar_uar_access",
VNIC_ENV_GET(&vnic, bar_uar_access));
if (MLX5_CAP_GEN(dev, vnic_env_cnt_odp_page_fault)) {
devlink_fmsg_u32_pair_put(fmsg, "odp_local_triggered_page_fault",
VNIC_ENV_GET(&vnic, odp_local_triggered_page_fault));
devlink_fmsg_u32_pair_put(fmsg, "odp_remote_triggered_page_fault",
VNIC_ENV_GET(&vnic, odp_remote_triggered_page_fault));
}
devlink_fmsg_obj_nest_end(fmsg);
devlink_fmsg_pair_nest_end(fmsg);