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net/mlx4_core: Enforce irq affinity changes immediatly

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During heavy traffic, napi is constatntly polling the complition queue
and no interrupt is fired. Because of that, changes to irq affinity are
ignored until traffic is stopped and resumed.

By registering to the irq notifier mechanism, and forcing interrupt when
affinity is changed, irq affinity changes will be immediatly enforced.

Signed-off-by: Yuval Atias <yuvala@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuval Atias
2014-05-14 12:15:10 +03:00
committed by David S. Miller
parent 3763e7ef17
commit 2eacc23c42
5 changed files with 83 additions and 2 deletions
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3
include/linux/mlx4/device.h
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@@ -577,6 +577,9 @@ struct mlx4_cq {
u32 cons_index;
u16 irq;
bool irq_affinity_change;
__be32 *set_ci_db;
__be32 *arm_db;
int arm_sn;