blk-mq/cpu-notif: Convert to new hotplug state machine

[linux-2.6-block.git] / block / blk-mq-cpu.c

diff --git a/block/blk-mq-cpu.c b/block/blk-mq-cpu.c
deleted file mode 100644 (file)
index bb3ed48..0000000
--- a/block/blk-mq-cpu.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * CPU notifier helper code for blk-mq
- *
- * Copyright (C) 2013-2014 Jens Axboe
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/blkdev.h>
-#include <linux/list.h>
-#include <linux/llist.h>
-#include <linux/smp.h>
-#include <linux/cpu.h>
-
-#include <linux/blk-mq.h>
-#include "blk-mq.h"
-
-static LIST_HEAD(blk_mq_cpu_notify_list);
-static DEFINE_RAW_SPINLOCK(blk_mq_cpu_notify_lock);
-
-static int blk_mq_main_cpu_notify(struct notifier_block *self,
-                                 unsigned long action, void *hcpu)
-{
-       unsigned int cpu = (unsigned long) hcpu;
-       struct blk_mq_cpu_notifier *notify;
-       int ret = NOTIFY_OK;
-
-       raw_spin_lock(&blk_mq_cpu_notify_lock);
-
-       list_for_each_entry(notify, &blk_mq_cpu_notify_list, list) {
-               ret = notify->notify(notify->data, action, cpu);
-               if (ret != NOTIFY_OK)
-                       break;
-       }
-
-       raw_spin_unlock(&blk_mq_cpu_notify_lock);
-       return ret;
-}
-
-void blk_mq_register_cpu_notifier(struct blk_mq_cpu_notifier *notifier)
-{
-       BUG_ON(!notifier->notify);
-
-       raw_spin_lock(&blk_mq_cpu_notify_lock);
-       list_add_tail(&notifier->list, &blk_mq_cpu_notify_list);
-       raw_spin_unlock(&blk_mq_cpu_notify_lock);
-}
-
-void blk_mq_unregister_cpu_notifier(struct blk_mq_cpu_notifier *notifier)
-{
-       raw_spin_lock(&blk_mq_cpu_notify_lock);
-       list_del(&notifier->list);
-       raw_spin_unlock(&blk_mq_cpu_notify_lock);
-}
-
-void blk_mq_init_cpu_notifier(struct blk_mq_cpu_notifier *notifier,
-                             int (*fn)(void *, unsigned long, unsigned int),
-                             void *data)
-{
-       notifier->notify = fn;
-       notifier->data = data;
-}
-
-void __init blk_mq_cpu_init(void)
-{
-       hotcpu_notifier(blk_mq_main_cpu_notify, 0);
-}