arm: configs: enable devfreq thermal for rk3288 linux

[firefly-linux-kernel-4.4.55.git] / block / blk-sysfs.c

diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 55c637b9c42b91319791899acd9f1921952898d0..e140cc487ce11349ff1917e4e866eccf0a18106c 100644 (file)
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -320,6 +320,34 @@ queue_rq_affinity_store(struct request_queue *q, const char *page, size_t count)
        return ret;
 }
 
+static ssize_t queue_poll_show(struct request_queue *q, char *page)
+{
+       return queue_var_show(test_bit(QUEUE_FLAG_POLL, &q->queue_flags), page);
+}
+
+static ssize_t queue_poll_store(struct request_queue *q, const char *page,
+                               size_t count)
+{
+       unsigned long poll_on;
+       ssize_t ret;
+
+       if (!q->mq_ops || !q->mq_ops->poll)
+               return -EINVAL;
+
+       ret = queue_var_store(&poll_on, page, count);
+       if (ret < 0)
+               return ret;
+
+       spin_lock_irq(q->queue_lock);
+       if (poll_on)
+               queue_flag_set(QUEUE_FLAG_POLL, q);
+       else
+               queue_flag_clear(QUEUE_FLAG_POLL, q);
+       spin_unlock_irq(q->queue_lock);
+
+       return ret;
+}
+
 static struct queue_sysfs_entry queue_requests_entry = {
        .attr = {.name = "nr_requests", .mode = S_IRUGO | S_IWUSR },
        .show = queue_requests_show,
@@ -445,6 +473,12 @@ static struct queue_sysfs_entry queue_random_entry = {
        .store = queue_store_random,
 };
 
+static struct queue_sysfs_entry queue_poll_entry = {
+       .attr = {.name = "io_poll", .mode = S_IRUGO | S_IWUSR },
+       .show = queue_poll_show,
+       .store = queue_poll_store,
+};
+
 static struct attribute *default_attrs[] = {
        &queue_requests_entry.attr,
        &queue_ra_entry.attr,
@@ -469,6 +503,7 @@ static struct attribute *default_attrs[] = {
        &queue_rq_affinity_entry.attr,
        &queue_iostats_entry.attr,
        &queue_random_entry.attr,
+       &queue_poll_entry.attr,
        NULL,
 };
 
@@ -543,6 +578,7 @@ static void blk_release_queue(struct kobject *kobj)
        struct request_queue *q =
                container_of(kobj, struct request_queue, kobj);
 
+       bdi_exit(&q->backing_dev_info);
        blkcg_exit_queue(q);
 
        if (q->elevator) {
@@ -602,9 +638,8 @@ int blk_register_queue(struct gendisk *disk)
         */
        if (!blk_queue_init_done(q)) {
                queue_flag_set_unlocked(QUEUE_FLAG_INIT_DONE, q);
+               percpu_ref_switch_to_percpu(&q->q_usage_counter);
                blk_queue_bypass_end(q);
-               if (q->mq_ops)
-                       blk_mq_finish_init(q);
        }
 
        ret = blk_trace_init_sysfs(dev);