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authorMatan Barak <matanb@mellanox.com>2016-04-17 17:08:41 +0300
committerDoug Ledford <dledford@redhat.com>2016-05-18 10:45:49 -0400
commitc16d2750a08c8ccaf98d65f287a8aec91bb9610d (patch)
tree21fbe727b8a95609dbad0d4a7e6ac2e94fe78177 /drivers/infiniband
parent94c6825e0ff75829207af6246782811b7c7af2c0 (diff)
IB/mlx5: Fire the CQ completion handler from tasklet
Previously, mlx5_ib_cq_comp was executed from interrupt context. Under heavy load, this could cause the CPU core to be in an interrupt context too long. Instead of executing the handler from the interrupt context we execute it from a much friendly tasklet context. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/mlx5/cq.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index a00ba4418de9..dabcc65bd65e 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -879,7 +879,10 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
mlx5_ib_dbg(dev, "cqn 0x%x\n", cq->mcq.cqn);
cq->mcq.irqn = irqn;
- cq->mcq.comp = mlx5_ib_cq_comp;
+ if (context)
+ cq->mcq.tasklet_ctx.comp = mlx5_ib_cq_comp;
+ else
+ cq->mcq.comp = mlx5_ib_cq_comp;
cq->mcq.event = mlx5_ib_cq_event;
INIT_LIST_HEAD(&cq->wc_list);