net/mlx5: add debugfs stats for frag buf dma pools

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Add a debugfs file exposing per-node DMA pool usage for mlx5_frag_buf
allocations.

  # cat /sys/kernel/debug/mlx5/<dev>/frag_buf_dma_pools
  node  block_size  used_blocks  allocated_blocks
     0        4096            0                 0
     0        8192            0                 0
     0       16384            0                 0
     0       32768            0                 0
     0       65536            0                 0
     1        4096            0                 0
     1        8192            0                 0
     1       16384            0                 0
     1       32768            0                 0
     1       65536            0                 0

Signed-off-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260514104925.337570-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Nimrod Oren 2026-05-14 13:49:25 +03:00 • committed by Jakub Kicinski

parent 0e22229971

commit 9fe78db3ad

2 changed files with 87 additions and 0 deletions

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86

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

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1

include/linux/mlx5/driver.h

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