net/mlx5: Redesign SF active work to remove table_lock

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active_work is a work that iterates over all
possible SF devices which their SF port
representors are located on different function,
and in case SF is in active state, probes it.
Currently, the active_work in active_wq is
synced with mlx5_vhca_events_work via table_lock
and this lock causing a bottleneck in performance.

To remove table_lock, redesign active_wq logic
so that it now pushes active_work per SF to
mlx5_vhca_events_workqueues. Since the latter
workqueues are ordered, active_work and
mlx5_vhca_events_work with same index will be
pushed into same workqueue, thus it completely
eliminates the need for a lock.

Signed-off-by: Wei Zhang <weizhang@nvidia.com>
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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This commit is contained in:

Wei Zhang 2023-10-12 12:27:37 -07:00 • committed by Saeed Mahameed

parent 3f7f31fff2

commit 15fa898aeb

3 changed files with 74 additions and 31 deletions

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86

drivers/net/ethernet/mellanox/mlx5/core/sf/dev/dev.c

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16

drivers/net/ethernet/mellanox/mlx5/core/sf/vhca_event.c

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3

drivers/net/ethernet/mellanox/mlx5/core/sf/vhca_event.h

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