IB/mlx5: Reduce spinlock contention by moving free operations outside

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The functions kfree() and kvfree() can occasionally trigger a long
chain of calls or face contention in the slab allocator. Executing
these inside a spinlock increases the risk of CPU stalls and increases
lock contention under heavy event load.

Move the memory freeing logic out of the critical sections in devx.c
by using temporary lists and local flags. This narrows the lock's
scope to only protect the list integrity and state transitions.

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Link: https://patch.msgid.link/20260503023349.1959-1-lirongqing@baidu.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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Li RongQing 2026-05-02 22:33:49 -04:00 • committed by Leon Romanovsky

parent 43f8f79468

commit d38e69adc2

1 changed files with 24 additions and 12 deletions

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drivers/infiniband/hw/mlx5/devx.c

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