RDMA/hns: Fix soft lockup under heavy CEQE load

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CEQEs are handled in interrupt handler currently. This may cause the
CPU core staying in interrupt context too long and lead to soft lockup
under heavy load.

Handle CEQEs in BH workqueue and set an upper limit for the number of
CEQE handled by a single call of work handler.

Fixes: a5073d6054 ("RDMA/hns: Add eq support of hip08")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20240710133705.896445-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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Junxian Huang 2024-07-10 21:36:59 +08:00 • committed by Leon Romanovsky

parent 6afa2c0bfb

commit 2fdf340383

2 changed files with 54 additions and 36 deletions

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1

drivers/infiniband/hw/hns/hns_roce_device.h

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89

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

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