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From: Bob Pearson <rpearsonhpe@gmail.com>
To: jgg@nvidia.com, leon@kernel.org, zyjzyj2000@gmail.com,
	jhack@hpe.com, linux-rdma@vger.kernel.org
Cc: Bob Pearson <rpearsonhpe@gmail.com>, Ian Ziemba <ian.ziemba@hpe.com>
Subject: [PATCH for-next v3 07/13] RDMA/rxe: Make tasks schedule each other
Date: Fri, 28 Oct 2022 22:10:04 -0500	[thread overview]
Message-ID: <20221029031009.64467-8-rpearsonhpe@gmail.com> (raw)
In-Reply-To: <20221029031009.64467-1-rpearsonhpe@gmail.com>

Replace rxe_run_task() by rxe_sched_task() when tasks call each other.
These are not performance critical and mainly involve error paths but
they run the risk of causing deadlocks.

Signed-off-by: Ian Ziemba <ian.ziemba@hpe.com>
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
---
 drivers/infiniband/sw/rxe/rxe_comp.c | 8 ++++----
 drivers/infiniband/sw/rxe/rxe_req.c  | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_comp.c b/drivers/infiniband/sw/rxe/rxe_comp.c
index 76dc0a4702fd..f2256f67edbf 100644
--- a/drivers/infiniband/sw/rxe/rxe_comp.c
+++ b/drivers/infiniband/sw/rxe/rxe_comp.c
@@ -316,7 +316,7 @@ static inline enum comp_state check_ack(struct rxe_qp *qp,
 					qp->comp.psn = pkt->psn;
 					if (qp->req.wait_psn) {
 						qp->req.wait_psn = 0;
-						rxe_run_task(&qp->req.task);
+						rxe_sched_task(&qp->req.task);
 					}
 				}
 				return COMPST_ERROR_RETRY;
@@ -463,7 +463,7 @@ static void do_complete(struct rxe_qp *qp, struct rxe_send_wqe *wqe)
 	 */
 	if (qp->req.wait_fence) {
 		qp->req.wait_fence = 0;
-		rxe_run_task(&qp->req.task);
+		rxe_sched_task(&qp->req.task);
 	}
 }
 
@@ -477,7 +477,7 @@ static inline enum comp_state complete_ack(struct rxe_qp *qp,
 		if (qp->req.need_rd_atomic) {
 			qp->comp.timeout_retry = 0;
 			qp->req.need_rd_atomic = 0;
-			rxe_run_task(&qp->req.task);
+			rxe_sched_task(&qp->req.task);
 		}
 	}
 
@@ -731,7 +731,7 @@ int rxe_completer(void *arg)
 							RXE_CNT_COMP_RETRY);
 					qp->req.need_retry = 1;
 					qp->comp.started_retry = 1;
-					rxe_run_task(&qp->req.task);
+					rxe_sched_task(&qp->req.task);
 				}
 				goto done;
 
diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c
index 41f1d84f0acb..fba7572e1d0c 100644
--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -733,7 +733,7 @@ int rxe_requester(void *arg)
 						       qp->req.wqe_index);
 			wqe->state = wqe_state_done;
 			wqe->status = IB_WC_SUCCESS;
-			rxe_run_task(&qp->comp.task);
+			rxe_sched_task(&qp->comp.task);
 			goto done;
 		}
 		payload = mtu;
@@ -817,7 +817,7 @@ int rxe_requester(void *arg)
 	qp->req.wqe_index = queue_next_index(qp->sq.queue, qp->req.wqe_index);
 	wqe->state = wqe_state_error;
 	qp->req.state = QP_STATE_ERROR;
-	rxe_run_task(&qp->comp.task);
+	rxe_sched_task(&qp->comp.task);
 exit:
 	ret = -EAGAIN;
 out:
-- 
2.34.1


  parent reply	other threads:[~2022-10-29  3:10 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-29  3:09 [PATCH for-next v3 00/13] Implement work queues for rdma_rxe Bob Pearson
2022-10-29  3:09 ` [PATCH for-next v3 01/13] RDMA/rxe: Make task interface pluggable Bob Pearson
2022-11-11  2:28   ` Yanjun Zhu
2022-10-29  3:09 ` [PATCH for-next v3 02/13] RDMA/rxe: Split rxe_drain_resp_pkts() Bob Pearson
2022-10-29  3:10 ` [PATCH for-next v3 03/13] RDMA/rxe: Simplify reset state handling in rxe_resp.c Bob Pearson
2022-11-11  3:04   ` Yanjun Zhu
2022-10-29  3:10 ` [PATCH for-next v3 04/13] RDMA/rxe: Handle qp error " Bob Pearson
2022-10-29  3:10 ` [PATCH v3 05/13] RDMA/rxe: Cleanup comp tasks in rxe_qp.c Bob Pearson
2022-10-29  3:10 ` [PATCH for-next v3 06/13] RDMA/rxe: Remove __rxe_do_task() Bob Pearson
2022-10-29  3:10 ` Bob Pearson [this message]
2022-10-29  3:10 ` [PATCH for-next v3 08/13] RDMA/rxe: Implement disable/enable_task() Bob Pearson
2022-10-29  3:10 ` [PATCH for-next v3 09/13] RDMA/rxe: Replace TASK_STATE_START by TASK_STATE_IDLE Bob Pearson
2022-10-29  3:10 ` [PATCH for-next v3 10/13] RDMA/rxe: Replace task->destroyed by task state INVALID Bob Pearson
2022-10-29  3:10 ` [PATCH for-next v3 11/13] RDMA/rxe: Add workqueue support for tasks Bob Pearson
2022-10-29  3:10 ` [PATCH for-next v3 12/13] RDMA/rxe: Make WORKQUEUE default for RC tasks Bob Pearson
2022-10-29  3:10 ` [PATCH for-next v3 13/13] RDMA/rxe: Remove tasklets from rxe_task.c Bob Pearson
2022-11-02 10:17 ` [PATCH for-next v3 00/13] Implement work queues for rdma_rxe Daisuke Matsuda (Fujitsu)
2022-11-02 11:20   ` Bob Pearson
2022-11-04  4:59     ` Daisuke Matsuda (Fujitsu)
2022-11-05 21:15       ` Bob Pearson
2022-11-07  8:21         ` Daisuke Matsuda (Fujitsu)
2022-11-07 16:06           ` Bob Pearson
2022-11-18  5:02 ` Daisuke Matsuda (Fujitsu)

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