net/mlx5: add debugfs stats for doorbell dma pools

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Add a debugfs file exposing per-node DMA pool usage for doorbell
allocations.

  # cat /sys/kernel/debug/mlx5/<dev>/db_dma_pools
  node  block_size  used_blocks  allocated_blocks
     0          64            0                 0
     1          64            0                 0

Signed-off-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260803132520.2891860-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Nimrod Oren 2026-08-03 16:25:20 +03:00 • committed by Jakub Kicinski

parent c29235677f

commit b7cfcc9d3d

2 changed files with 28 additions and 0 deletions

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27

drivers/net/ethernet/mellanox/mlx5/core/alloc.c

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1

include/linux/mlx5/driver.h

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