diff options
Diffstat (limited to 'drivers/s390/block/dasd.c')
| -rw-r--r-- | drivers/s390/block/dasd.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index d3a38c421503..a23e7d394a0a 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -41,6 +41,15 @@ #define DASD_DIAG_MOD "dasd_diag_mod" +static unsigned int queue_depth = 32; +static unsigned int nr_hw_queues = 4; + +module_param(queue_depth, uint, 0444); +MODULE_PARM_DESC(queue_depth, "Default queue depth for new DASD devices"); + +module_param(nr_hw_queues, uint, 0444); +MODULE_PARM_DESC(nr_hw_queues, "Default number of hardware queues for new DASD devices"); + /* * SECTION: exported variables of dasd.c */ @@ -64,8 +73,8 @@ static int dasd_alloc_queue(struct dasd_block *); static void dasd_setup_queue(struct dasd_block *); static void dasd_free_queue(struct dasd_block *); static int dasd_flush_block_queue(struct dasd_block *); -static void dasd_device_tasklet(struct dasd_device *); -static void dasd_block_tasklet(struct dasd_block *); +static void dasd_device_tasklet(unsigned long); +static void dasd_block_tasklet(unsigned long); static void do_kick_device(struct work_struct *); static void do_restore_device(struct work_struct *); static void do_reload_device(struct work_struct *); @@ -116,8 +125,7 @@ struct dasd_device *dasd_alloc_device(void) dasd_init_chunklist(&device->erp_chunks, device->erp_mem, PAGE_SIZE); spin_lock_init(&device->mem_lock); atomic_set(&device->tasklet_scheduled, 0); - tasklet_init(&device->tasklet, - (void (*)(unsigned long)) dasd_device_tasklet, + tasklet_init(&device->tasklet, dasd_device_tasklet, (unsigned long) device); INIT_LIST_HEAD(&device->ccw_queue); timer_setup(&device->timer, dasd_device_timeout, 0); @@ -157,8 +165,7 @@ struct dasd_block *dasd_alloc_block(void) atomic_set(&block->open_count, -1); atomic_set(&block->tasklet_scheduled, 0); - tasklet_init(&block->tasklet, - (void (*)(unsigned long)) dasd_block_tasklet, + tasklet_init(&block->tasklet, dasd_block_tasklet, (unsigned long) block); INIT_LIST_HEAD(&block->ccw_queue); spin_lock_init(&block->queue_lock); @@ -2055,8 +2062,9 @@ EXPORT_SYMBOL_GPL(dasd_flush_device_queue); /* * Acquire the device lock and process queues for the device. */ -static void dasd_device_tasklet(struct dasd_device *device) +static void dasd_device_tasklet(unsigned long data) { + struct dasd_device *device = (struct dasd_device *) data; struct list_head final_queue; atomic_set (&device->tasklet_scheduled, 0); @@ -2774,8 +2782,9 @@ static void __dasd_block_start_head(struct dasd_block *block) * block layer request queue, creates ccw requests, enqueues them on * a dasd_device and processes ccw requests that have been returned. */ -static void dasd_block_tasklet(struct dasd_block *block) +static void dasd_block_tasklet(unsigned long data) { + struct dasd_block *block = (struct dasd_block *) data; struct list_head final_queue; struct list_head *l, *n; struct dasd_ccw_req *cqr; @@ -3115,9 +3124,10 @@ static int dasd_alloc_queue(struct dasd_block *block) block->tag_set.ops = &dasd_mq_ops; block->tag_set.cmd_size = sizeof(struct dasd_ccw_req); - block->tag_set.nr_hw_queues = DASD_NR_HW_QUEUES; - block->tag_set.queue_depth = DASD_MAX_LCU_DEV * DASD_REQ_PER_DEV; + block->tag_set.nr_hw_queues = nr_hw_queues; + block->tag_set.queue_depth = queue_depth; block->tag_set.flags = BLK_MQ_F_SHOULD_MERGE; + block->tag_set.numa_node = NUMA_NO_NODE; rc = blk_mq_alloc_tag_set(&block->tag_set); if (rc) |