summaryrefslogtreecommitdiffstats
path: root/block/blk-core.c
diff options
context:
space:
mode:
Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c88
1 files changed, 0 insertions, 88 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 98138f0..527b338 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -26,8 +26,6 @@
#include <linux/swap.h>
#include <linux/writeback.h>
#include <linux/task_io_accounting_ops.h>
-#include <linux/interrupt.h>
-#include <linux/cpu.h>
#include <linux/blktrace_api.h>
#include <linux/fault-inject.h>
@@ -50,8 +48,6 @@ struct kmem_cache *blk_requestq_cachep;
*/
static struct workqueue_struct *kblockd_workqueue;
-static DEFINE_PER_CPU(struct list_head, blk_cpu_done);
-
static void drive_stat_acct(struct request *rq, int new_io)
{
struct hd_struct *part;
@@ -1644,82 +1640,6 @@ static int __end_that_request_first(struct request *req, int error,
}
/*
- * splice the completion data to a local structure and hand off to
- * process_completion_queue() to complete the requests
- */
-static void blk_done_softirq(struct softirq_action *h)
-{
- struct list_head *cpu_list, local_list;
-
- local_irq_disable();
- cpu_list = &__get_cpu_var(blk_cpu_done);
- list_replace_init(cpu_list, &local_list);
- local_irq_enable();
-
- while (!list_empty(&local_list)) {
- struct request *rq;
-
- rq = list_entry(local_list.next, struct request, donelist);
- list_del_init(&rq->donelist);
- rq->q->softirq_done_fn(rq);
- }
-}
-
-static int __cpuinit blk_cpu_notify(struct notifier_block *self,
- unsigned long action, void *hcpu)
-{
- /*
- * If a CPU goes away, splice its entries to the current CPU
- * and trigger a run of the softirq
- */
- if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) {
- int cpu = (unsigned long) hcpu;
-
- local_irq_disable();
- list_splice_init(&per_cpu(blk_cpu_done, cpu),
- &__get_cpu_var(blk_cpu_done));
- raise_softirq_irqoff(BLOCK_SOFTIRQ);
- local_irq_enable();
- }
-
- return NOTIFY_OK;
-}
-
-
-static struct notifier_block blk_cpu_notifier __cpuinitdata = {
- .notifier_call = blk_cpu_notify,
-};
-
-/**
- * blk_complete_request - end I/O on a request
- * @req: the request being processed
- *
- * Description:
- * Ends all I/O on a request. It does not handle partial completions,
- * unless the driver actually implements this in its completion callback
- * through requeueing. The actual completion happens out-of-order,
- * through a softirq handler. The user must have registered a completion
- * callback through blk_queue_softirq_done().
- **/
-
-void blk_complete_request(struct request *req)
-{
- struct list_head *cpu_list;
- unsigned long flags;
-
- BUG_ON(!req->q->softirq_done_fn);
-
- local_irq_save(flags);
-
- cpu_list = &__get_cpu_var(blk_cpu_done);
- list_add_tail(&req->donelist, cpu_list);
- raise_softirq_irqoff(BLOCK_SOFTIRQ);
-
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL(blk_complete_request);
-
-/*
* queue lock must be held
*/
static void end_that_request_last(struct request *req, int error)
@@ -2053,8 +1973,6 @@ EXPORT_SYMBOL(kblockd_flush_work);
int __init blk_dev_init(void)
{
- int i;
-
kblockd_workqueue = create_workqueue("kblockd");
if (!kblockd_workqueue)
panic("Failed to create kblockd\n");
@@ -2065,12 +1983,6 @@ int __init blk_dev_init(void)
blk_requestq_cachep = kmem_cache_create("blkdev_queue",
sizeof(struct request_queue), 0, SLAB_PANIC, NULL);
- for_each_possible_cpu(i)
- INIT_LIST_HEAD(&per_cpu(blk_cpu_done, i));
-
- open_softirq(BLOCK_SOFTIRQ, blk_done_softirq);
- register_hotcpu_notifier(&blk_cpu_notifier);
-
return 0;
}