nvme: Move transports to use nvme-core workqueue

Instead of each transport using it's own workqueue, export
a single nvme-core workqueue and use that instead.

In the future, this will help us moving towards some unification
if controller setup/teardown flows.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sagi Grimberg 2017-06-07 20:31:55 +02:00 committed by Christoph Hellwig
parent c58bd1bf4d
commit 9a6327d2f2
6 changed files with 36 additions and 60 deletions

View File

@ -65,6 +65,9 @@ static bool force_apst;
module_param(force_apst, bool, 0644);
MODULE_PARM_DESC(force_apst, "allow APST for newly enumerated devices even if quirked off");
struct workqueue_struct *nvme_wq;
EXPORT_SYMBOL_GPL(nvme_wq);
static LIST_HEAD(nvme_ctrl_list);
static DEFINE_SPINLOCK(dev_list_lock);
@ -2538,10 +2541,15 @@ int __init nvme_core_init(void)
{
int result;
nvme_wq = alloc_workqueue("nvme-wq",
WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0);
if (!nvme_wq)
return -ENOMEM;
result = __register_chrdev(nvme_char_major, 0, NVME_MINORS, "nvme",
&nvme_dev_fops);
if (result < 0)
return result;
goto destroy_wq;
else if (result > 0)
nvme_char_major = result;
@ -2553,8 +2561,10 @@ int __init nvme_core_init(void)
return 0;
unregister_chrdev:
unregister_chrdev:
__unregister_chrdev(nvme_char_major, 0, NVME_MINORS, "nvme");
destroy_wq:
destroy_workqueue(nvme_wq);
return result;
}
@ -2562,6 +2572,7 @@ void nvme_core_exit(void)
{
class_destroy(nvme_class);
__unregister_chrdev(nvme_char_major, 0, NVME_MINORS, "nvme");
destroy_workqueue(nvme_wq);
}
MODULE_LICENSE("GPL");

View File

@ -214,7 +214,6 @@ static LIST_HEAD(nvme_fc_lport_list);
static DEFINE_IDA(nvme_fc_local_port_cnt);
static DEFINE_IDA(nvme_fc_ctrl_cnt);
static struct workqueue_struct *nvme_fc_wq;
@ -1775,7 +1774,7 @@ nvme_fc_error_recovery(struct nvme_fc_ctrl *ctrl, char *errmsg)
return;
}
if (!queue_work(nvme_fc_wq, &ctrl->reset_work))
if (!queue_work(nvme_wq, &ctrl->reset_work))
dev_err(ctrl->ctrl.device,
"NVME-FC{%d}: error_recovery: Failed to schedule "
"reset work\n", ctrl->cnum);
@ -2555,7 +2554,7 @@ __nvme_fc_schedule_delete_work(struct nvme_fc_ctrl *ctrl)
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING))
return true;
if (!queue_work(nvme_fc_wq, &ctrl->delete_work))
if (!queue_work(nvme_wq, &ctrl->delete_work))
return true;
return false;
@ -2582,7 +2581,7 @@ nvme_fc_del_nvme_ctrl(struct nvme_ctrl *nctrl)
ret = __nvme_fc_del_ctrl(ctrl);
if (!ret)
flush_workqueue(nvme_fc_wq);
flush_workqueue(nvme_wq);
nvme_put_ctrl(&ctrl->ctrl);
@ -2607,7 +2606,7 @@ nvme_fc_reconnect_or_delete(struct nvme_fc_ctrl *ctrl, int status)
dev_info(ctrl->ctrl.device,
"NVME-FC{%d}: Reconnect attempt in %d seconds.\n",
ctrl->cnum, ctrl->ctrl.opts->reconnect_delay);
queue_delayed_work(nvme_fc_wq, &ctrl->connect_work,
queue_delayed_work(nvme_wq, &ctrl->connect_work,
ctrl->ctrl.opts->reconnect_delay * HZ);
} else {
dev_warn(ctrl->ctrl.device,
@ -2651,7 +2650,7 @@ nvme_fc_reset_nvme_ctrl(struct nvme_ctrl *nctrl)
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RESETTING))
return -EBUSY;
if (!queue_work(nvme_fc_wq, &ctrl->reset_work))
if (!queue_work(nvme_wq, &ctrl->reset_work))
return -EBUSY;
flush_work(&ctrl->reset_work);
@ -2966,20 +2965,7 @@ static struct nvmf_transport_ops nvme_fc_transport = {
static int __init nvme_fc_init_module(void)
{
int ret;
nvme_fc_wq = create_workqueue("nvme_fc_wq");
if (!nvme_fc_wq)
return -ENOMEM;
ret = nvmf_register_transport(&nvme_fc_transport);
if (ret)
goto err;
return 0;
err:
destroy_workqueue(nvme_fc_wq);
return ret;
return nvmf_register_transport(&nvme_fc_transport);
}
static void __exit nvme_fc_exit_module(void)
@ -2990,8 +2976,6 @@ static void __exit nvme_fc_exit_module(void)
nvmf_unregister_transport(&nvme_fc_transport);
destroy_workqueue(nvme_fc_wq);
ida_destroy(&nvme_fc_local_port_cnt);
ida_destroy(&nvme_fc_ctrl_cnt);
}

View File

@ -33,6 +33,8 @@ extern unsigned char shutdown_timeout;
#define NVME_DEFAULT_KATO 5
#define NVME_KATO_GRACE 10
extern struct workqueue_struct *nvme_wq;
enum {
NVME_NS_LBA = 0,
NVME_NS_LIGHTNVM = 1,

View File

@ -71,8 +71,6 @@ module_param(max_host_mem_size_mb, uint, 0444);
MODULE_PARM_DESC(max_host_mem_size_mb,
"Maximum Host Memory Buffer (HMB) size per controller (in MiB)");
static struct workqueue_struct *nvme_workq;
struct nvme_dev;
struct nvme_queue;
@ -2190,7 +2188,7 @@ static int nvme_reset(struct nvme_dev *dev)
return -ENODEV;
if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_RESETTING))
return -EBUSY;
if (!queue_work(nvme_workq, &dev->reset_work))
if (!queue_work(nvme_wq, &dev->reset_work))
return -EBUSY;
return 0;
}
@ -2318,7 +2316,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_RESETTING);
dev_info(dev->ctrl.device, "pci function %s\n", dev_name(&pdev->dev));
queue_work(nvme_workq, &dev->reset_work);
queue_work(nvme_wq, &dev->reset_work);
return 0;
release_pools:
@ -2506,22 +2504,12 @@ static struct pci_driver nvme_driver = {
static int __init nvme_init(void)
{
int result;
nvme_workq = alloc_workqueue("nvme", WQ_UNBOUND | WQ_MEM_RECLAIM, 0);
if (!nvme_workq)
return -ENOMEM;
result = pci_register_driver(&nvme_driver);
if (result)
destroy_workqueue(nvme_workq);
return result;
return pci_register_driver(&nvme_driver);
}
static void __exit nvme_exit(void)
{
pci_unregister_driver(&nvme_driver);
destroy_workqueue(nvme_workq);
_nvme_check_size();
}

View File

@ -140,8 +140,6 @@ static DEFINE_MUTEX(device_list_mutex);
static LIST_HEAD(nvme_rdma_ctrl_list);
static DEFINE_MUTEX(nvme_rdma_ctrl_mutex);
static struct workqueue_struct *nvme_rdma_wq;
/*
* Disabling this option makes small I/O goes faster, but is fundamentally
* unsafe. With it turned off we will have to register a global rkey that
@ -712,11 +710,11 @@ static void nvme_rdma_reconnect_or_remove(struct nvme_rdma_ctrl *ctrl)
if (nvmf_should_reconnect(&ctrl->ctrl)) {
dev_info(ctrl->ctrl.device, "Reconnecting in %d seconds...\n",
ctrl->ctrl.opts->reconnect_delay);
queue_delayed_work(nvme_rdma_wq, &ctrl->reconnect_work,
queue_delayed_work(nvme_wq, &ctrl->reconnect_work,
ctrl->ctrl.opts->reconnect_delay * HZ);
} else {
dev_info(ctrl->ctrl.device, "Removing controller...\n");
queue_work(nvme_rdma_wq, &ctrl->delete_work);
queue_work(nvme_wq, &ctrl->delete_work);
}
}
@ -825,7 +823,7 @@ static void nvme_rdma_error_recovery(struct nvme_rdma_ctrl *ctrl)
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RECONNECTING))
return;
queue_work(nvme_rdma_wq, &ctrl->err_work);
queue_work(nvme_wq, &ctrl->err_work);
}
static void nvme_rdma_wr_error(struct ib_cq *cq, struct ib_wc *wc,
@ -1692,7 +1690,7 @@ static int __nvme_rdma_del_ctrl(struct nvme_rdma_ctrl *ctrl)
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING))
return -EBUSY;
if (!queue_work(nvme_rdma_wq, &ctrl->delete_work))
if (!queue_work(nvme_wq, &ctrl->delete_work))
return -EBUSY;
return 0;
@ -1768,7 +1766,7 @@ static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
del_dead_ctrl:
/* Deleting this dead controller... */
dev_warn(ctrl->ctrl.device, "Removing after reset failure\n");
WARN_ON(!queue_work(nvme_rdma_wq, &ctrl->delete_work));
WARN_ON(!queue_work(nvme_wq, &ctrl->delete_work));
}
static int nvme_rdma_reset_ctrl(struct nvme_ctrl *nctrl)
@ -1778,7 +1776,7 @@ static int nvme_rdma_reset_ctrl(struct nvme_ctrl *nctrl)
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RESETTING))
return -EBUSY;
if (!queue_work(nvme_rdma_wq, &ctrl->reset_work))
if (!queue_work(nvme_wq, &ctrl->reset_work))
return -EBUSY;
flush_work(&ctrl->reset_work);
@ -2015,7 +2013,7 @@ static void nvme_rdma_remove_one(struct ib_device *ib_device, void *client_data)
}
mutex_unlock(&nvme_rdma_ctrl_mutex);
flush_workqueue(nvme_rdma_wq);
flush_workqueue(nvme_wq);
}
static struct ib_client nvme_rdma_ib_client = {
@ -2028,13 +2026,9 @@ static int __init nvme_rdma_init_module(void)
{
int ret;
nvme_rdma_wq = create_workqueue("nvme_rdma_wq");
if (!nvme_rdma_wq)
return -ENOMEM;
ret = ib_register_client(&nvme_rdma_ib_client);
if (ret)
goto err_destroy_wq;
return ret;
ret = nvmf_register_transport(&nvme_rdma_transport);
if (ret)
@ -2044,8 +2038,6 @@ static int __init nvme_rdma_init_module(void)
err_unreg_client:
ib_unregister_client(&nvme_rdma_ib_client);
err_destroy_wq:
destroy_workqueue(nvme_rdma_wq);
return ret;
}
@ -2053,7 +2045,6 @@ static void __exit nvme_rdma_cleanup_module(void)
{
nvmf_unregister_transport(&nvme_rdma_transport);
ib_unregister_client(&nvme_rdma_ib_client);
destroy_workqueue(nvme_rdma_wq);
}
module_init(nvme_rdma_init_module);

View File

@ -150,7 +150,7 @@ nvme_loop_timeout(struct request *rq, bool reserved)
struct nvme_loop_iod *iod = blk_mq_rq_to_pdu(rq);
/* queue error recovery */
schedule_work(&iod->queue->ctrl->reset_work);
queue_work(nvme_wq, &iod->queue->ctrl->reset_work);
/* fail with DNR on admin cmd timeout */
nvme_req(rq)->status = NVME_SC_ABORT_REQ | NVME_SC_DNR;
@ -465,7 +465,7 @@ static int __nvme_loop_del_ctrl(struct nvme_loop_ctrl *ctrl)
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING))
return -EBUSY;
if (!schedule_work(&ctrl->delete_work))
if (!queue_work(nvme_wq, &ctrl->delete_work))
return -EBUSY;
return 0;
@ -545,7 +545,7 @@ static int nvme_loop_reset_ctrl(struct nvme_ctrl *nctrl)
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RESETTING))
return -EBUSY;
if (!schedule_work(&ctrl->reset_work))
if (!queue_work(nvme_wq, &ctrl->reset_work))
return -EBUSY;
flush_work(&ctrl->reset_work);
@ -762,7 +762,7 @@ static void __exit nvme_loop_cleanup_module(void)
__nvme_loop_del_ctrl(ctrl);
mutex_unlock(&nvme_loop_ctrl_mutex);
flush_scheduled_work();
flush_workqueue(nvme_wq);
}
module_init(nvme_loop_init_module);