diff options
| author |   Philip J Kelleher <pjk1939@linux.vnet.ibm.com> | 2013-06-18 14:34:54 -0500 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2013-06-19 13:52:09 +0200 |
| commit | a3299ab18591d36ad5622f5064619123c439b779 (patch) | |
| tree | 5a08d03af4ef28eea4f1638a385d10d3fa107856 /drivers/block/rsxx | |
| parent | blk-throttle: implement proper hierarchy support (diff) | |
| download | linux-dev-a3299ab18591d36ad5622f5064619123c439b779.tar.xz linux-dev-a3299ab18591d36ad5622f5064619123c439b779.zip | |
rsxx: Individual workqueues for interruptible events.
Giving all interrupt based events their own workqueue to complete
tasks on. This fixes a bug that would cause creg commands to timeout
if too many are issued at once.
Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/rsxx')
| -rw-r--r-- | drivers/block/rsxx/core.c | 23 | ||||
| -rw-r--r-- | drivers/block/rsxx/cregs.c | 5 | ||||
| -rw-r--r-- | drivers/block/rsxx/rsxx_priv.h | 2 |
3 files changed, 27 insertions, 3 deletions
diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index 5af21f2db29c..774f810c6a9c 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -163,12 +163,13 @@ static irqreturn_t rsxx_isr(int irq, void *pdata) } if (isr & CR_INTR_CREG) { - schedule_work(&card->creg_ctrl.done_work); + queue_work(card->creg_ctrl.creg_wq, + &card->creg_ctrl.done_work); handled++; } if (isr & CR_INTR_EVENT) { - schedule_work(&card->event_work); + queue_work(card->event_wq, &card->event_work); rsxx_disable_ier_and_isr(card, CR_INTR_EVENT); handled++; } @@ -610,7 +611,11 @@ static int rsxx_pci_probe(struct pci_dev *dev, } /************* Setup Processor Command Interface *************/ - rsxx_creg_setup(card); + st = rsxx_creg_setup(card); + if (st) { + dev_err(CARD_TO_DEV(card), "Failed to setup creg interface.\n"); + goto failed_creg_setup; + } spin_lock_irq(&card->irq_lock); rsxx_enable_ier_and_isr(card, CR_INTR_CREG); @@ -650,6 +655,12 @@ static int rsxx_pci_probe(struct pci_dev *dev, } /************* Setup Card Event Handler *************/ + card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event"); + if (!card->event_wq) { + dev_err(CARD_TO_DEV(card), "Failed card event setup.\n"); + goto failed_event_handler; + } + INIT_WORK(&card->event_work, card_event_handler); st = rsxx_setup_dev(card); @@ -688,9 +699,15 @@ static int rsxx_pci_probe(struct pci_dev *dev, return 0; failed_create_dev: + destroy_workqueue(card->event_wq); + card->event_wq = NULL; +failed_event_handler: rsxx_dma_destroy(card); failed_dma_setup: failed_compatiblity_check: + destroy_workqueue(card->creg_ctrl.creg_wq); + card->creg_ctrl.creg_wq = NULL; +failed_creg_setup: spin_lock_irq(&card->irq_lock); rsxx_disable_ier_and_isr(card, CR_INTR_ALL); spin_unlock_irq(&card->irq_lock); diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c index 4b5c020a0a65..4914464c19fc 100644 --- a/drivers/block/rsxx/cregs.c +++ b/drivers/block/rsxx/cregs.c @@ -727,6 +727,11 @@ int rsxx_creg_setup(struct rsxx_cardinfo *card) { card->creg_ctrl.active_cmd = NULL; + card->creg_ctrl.creg_wq = + create_singlethread_workqueue(DRIVER_NAME"_creg"); + if (!card->creg_ctrl.creg_wq) + return -ENOMEM; + INIT_WORK(&card->creg_ctrl.done_work, creg_cmd_done); mutex_init(&card->creg_ctrl.reset_lock); INIT_LIST_HEAD(&card->creg_ctrl.queue); diff --git a/drivers/block/rsxx/rsxx_priv.h b/drivers/block/rsxx/rsxx_priv.h index 382e8bf5c03b..0dd62d966772 100644 --- a/drivers/block/rsxx/rsxx_priv.h +++ b/drivers/block/rsxx/rsxx_priv.h @@ -134,6 +134,7 @@ struct rsxx_cardinfo { spinlock_t lock; bool active; struct creg_cmd *active_cmd; + struct workqueue_struct *creg_wq; struct work_struct done_work; struct list_head queue; unsigned int q_depth; @@ -154,6 +155,7 @@ struct rsxx_cardinfo { int buf_len; } log; + struct workqueue_struct *event_wq; struct work_struct event_work; unsigned int state; u64 size8; |