From: Matan Barak Date: Sun, 17 Apr 2016 14:08:41 +0000 (+0300) Subject: IB/mlx5: Fire the CQ completion handler from tasklet X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c16d2750a08c8ccaf98d65f287a8aec91bb9610d;p=linux-beck.git 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 Signed-off-by: Doug Ledford --- 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);