From be42a33b9252f0b3857cadb896e430ee17cccad4 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Thu, 10 Jun 2021 14:44:35 -0700 Subject: [PATCH] nvme: use blk_execute_rq() for passthrough commands The generic blk_execute_rq() knows how to handle polled completions. Use that instead of implementing an nvme specific handler. Signed-off-by: Keith Busch Reviewed-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Link: https://lore.kernel.org/r/20210610214437.641245-3-kbusch@kernel.org Signed-off-by: Jens Axboe --- drivers/nvme/host/core.c | 40 +++++++------------------------------ drivers/nvme/host/fabrics.c | 13 ++++++------ drivers/nvme/host/fabrics.h | 2 +- drivers/nvme/host/fc.c | 2 +- drivers/nvme/host/nvme.h | 2 +- drivers/nvme/host/rdma.c | 3 +-- drivers/nvme/host/tcp.c | 2 +- drivers/nvme/target/loop.c | 2 +- 8 files changed, 19 insertions(+), 47 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 80c656dcbbacf..e0d3f0aa25da6 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -631,6 +631,8 @@ static inline void nvme_init_request(struct request *req, cmd->common.flags &= ~NVME_CMD_SGL_ALL; req->cmd_flags |= REQ_FAILFAST_DRIVER; + if (req->mq_hctx->type == HCTX_TYPE_POLL) + req->cmd_flags |= REQ_HIPRI; nvme_clear_nvme_request(req); memcpy(nvme_req(req)->cmd, cmd, sizeof(*cmd)); } @@ -1029,31 +1031,6 @@ blk_status_t nvme_setup_cmd(struct nvme_ns *ns, struct request *req) } EXPORT_SYMBOL_GPL(nvme_setup_cmd); -static void nvme_end_sync_rq(struct request *rq, blk_status_t error) -{ - struct completion *waiting = rq->end_io_data; - - rq->end_io_data = NULL; - complete(waiting); -} - -static void nvme_execute_rq_polled(struct request_queue *q, - struct gendisk *bd_disk, struct request *rq, int at_head) -{ - DECLARE_COMPLETION_ONSTACK(wait); - - WARN_ON_ONCE(!test_bit(QUEUE_FLAG_POLL, &q->queue_flags)); - - rq->cmd_flags |= REQ_HIPRI; - rq->end_io_data = &wait; - blk_execute_rq_nowait(bd_disk, rq, at_head, nvme_end_sync_rq); - - while (!completion_done(&wait)) { - blk_poll(q, request_to_qc_t(rq->mq_hctx, rq), true); - cond_resched(); - } -} - /* * Returns 0 on success. If the result is negative, it's a Linux error code; * if the result is positive, it's an NVM Express status code @@ -1061,7 +1038,7 @@ static void nvme_execute_rq_polled(struct request_queue *q, int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, union nvme_result *result, void *buffer, unsigned bufflen, unsigned timeout, int qid, int at_head, - blk_mq_req_flags_t flags, bool poll) + blk_mq_req_flags_t flags) { struct request *req; int ret; @@ -1082,10 +1059,7 @@ int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, goto out; } - if (poll) - nvme_execute_rq_polled(req->q, NULL, req, at_head); - else - blk_execute_rq(NULL, req, at_head); + blk_execute_rq(NULL, req, at_head); if (result) *result = nvme_req(req)->result; if (nvme_req(req)->flags & NVME_REQ_CANCELLED) @@ -1102,7 +1076,7 @@ int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, void *buffer, unsigned bufflen) { return __nvme_submit_sync_cmd(q, cmd, NULL, buffer, bufflen, 0, - NVME_QID_ANY, 0, 0, false); + NVME_QID_ANY, 0, 0); } EXPORT_SYMBOL_GPL(nvme_submit_sync_cmd); @@ -1465,7 +1439,7 @@ static int nvme_features(struct nvme_ctrl *dev, u8 op, unsigned int fid, c.features.dword11 = cpu_to_le32(dword11); ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &res, - buffer, buflen, 0, NVME_QID_ANY, 0, 0, false); + buffer, buflen, 0, NVME_QID_ANY, 0, 0); if (ret >= 0 && result) *result = le32_to_cpu(res.u32); return ret; @@ -2047,7 +2021,7 @@ int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len, cmd.common.cdw11 = cpu_to_le32(len); return __nvme_submit_sync_cmd(ctrl->admin_q, &cmd, NULL, buffer, len, 0, - NVME_QID_ANY, 1, 0, false); + NVME_QID_ANY, 1, 0); } EXPORT_SYMBOL_GPL(nvme_sec_submit); #endif /* CONFIG_BLK_SED_OPAL */ diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index 1e6a7cc056caf..a5469fd9d4c31 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -154,7 +154,7 @@ int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val) cmd.prop_get.offset = cpu_to_le32(off); ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0, 0, - NVME_QID_ANY, 0, 0, false); + NVME_QID_ANY, 0, 0); if (ret >= 0) *val = le64_to_cpu(res.u64); @@ -200,7 +200,7 @@ int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val) cmd.prop_get.offset = cpu_to_le32(off); ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0, 0, - NVME_QID_ANY, 0, 0, false); + NVME_QID_ANY, 0, 0); if (ret >= 0) *val = le64_to_cpu(res.u64); @@ -245,7 +245,7 @@ int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val) cmd.prop_set.value = cpu_to_le64(val); ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, NULL, NULL, 0, 0, - NVME_QID_ANY, 0, 0, false); + NVME_QID_ANY, 0, 0); if (unlikely(ret)) dev_err(ctrl->device, "Property Set error: %d, offset %#x\n", @@ -391,7 +391,7 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl) ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, data, sizeof(*data), 0, NVME_QID_ANY, 1, - BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT, false); + BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT); if (ret) { nvmf_log_connect_error(ctrl, ret, le32_to_cpu(res.u32), &cmd, data); @@ -415,7 +415,6 @@ EXPORT_SYMBOL_GPL(nvmf_connect_admin_queue); * @qid: NVMe I/O queue number for the new I/O connection between * host and target (note qid == 0 is illegal as this is * the Admin queue, per NVMe standard). - * @poll: Whether or not to poll for the completion of the connect cmd. * * This function issues a fabrics-protocol connection * of a NVMe I/O queue (via NVMe Fabrics "Connect" command) @@ -427,7 +426,7 @@ EXPORT_SYMBOL_GPL(nvmf_connect_admin_queue); * > 0: NVMe error status code * < 0: Linux errno error code */ -int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid, bool poll) +int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid) { struct nvme_command cmd = { }; struct nvmf_connect_data *data; @@ -453,7 +452,7 @@ int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid, bool poll) ret = __nvme_submit_sync_cmd(ctrl->connect_q, &cmd, &res, data, sizeof(*data), 0, qid, 1, - BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT, poll); + BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT); if (ret) { nvmf_log_connect_error(ctrl, ret, le32_to_cpu(res.u32), &cmd, data); diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h index c31dad69a7738..a146cb903869c 100644 --- a/drivers/nvme/host/fabrics.h +++ b/drivers/nvme/host/fabrics.h @@ -182,7 +182,7 @@ int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val); int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val); int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val); int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl); -int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid, bool poll); +int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid); int nvmf_register_transport(struct nvmf_transport_ops *ops); void nvmf_unregister_transport(struct nvmf_transport_ops *ops); void nvmf_free_options(struct nvmf_ctrl_options *opts); diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 7600863f7752b..7f462af1b02af 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2346,7 +2346,7 @@ nvme_fc_connect_io_queues(struct nvme_fc_ctrl *ctrl, u16 qsize) (qsize / 5)); if (ret) break; - ret = nvmf_connect_io_queue(&ctrl->ctrl, i, false); + ret = nvmf_connect_io_queue(&ctrl->ctrl, i); if (ret) break; diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 75420ceacc104..3b12ad78ee7a6 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -658,7 +658,7 @@ int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, union nvme_result *result, void *buffer, unsigned bufflen, unsigned timeout, int qid, int at_head, - blk_mq_req_flags_t flags, bool poll); + blk_mq_req_flags_t flags); int nvme_set_features(struct nvme_ctrl *dev, unsigned int fid, unsigned int dword11, void *buffer, size_t buflen, u32 *result); diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index a9e70cefd7eda..7f6b3a9915014 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -680,11 +680,10 @@ static void nvme_rdma_stop_io_queues(struct nvme_rdma_ctrl *ctrl) static int nvme_rdma_start_queue(struct nvme_rdma_ctrl *ctrl, int idx) { struct nvme_rdma_queue *queue = &ctrl->queues[idx]; - bool poll = nvme_rdma_poll_queue(queue); int ret; if (idx) - ret = nvmf_connect_io_queue(&ctrl->ctrl, idx, poll); + ret = nvmf_connect_io_queue(&ctrl->ctrl, idx); else ret = nvmf_connect_admin_queue(&ctrl->ctrl); diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index c7bd37103cf40..12acfe05cd68f 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -1574,7 +1574,7 @@ static int nvme_tcp_start_queue(struct nvme_ctrl *nctrl, int idx) int ret; if (idx) - ret = nvmf_connect_io_queue(nctrl, idx, false); + ret = nvmf_connect_io_queue(nctrl, idx); else ret = nvmf_connect_admin_queue(nctrl); diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index a5c4a18650263..3a17a7e26bbfc 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -337,7 +337,7 @@ static int nvme_loop_connect_io_queues(struct nvme_loop_ctrl *ctrl) int i, ret; for (i = 1; i < ctrl->ctrl.queue_count; i++) { - ret = nvmf_connect_io_queue(&ctrl->ctrl, i, false); + ret = nvmf_connect_io_queue(&ctrl->ctrl, i); if (ret) return ret; set_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[i].flags); -- 2.39.5