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Diffstat (limited to 'block/blk-mq-sysfs.c')
-rw-r--r--block/blk-mq-sysfs.c40
1 files changed, 25 insertions, 15 deletions
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
index fe822aa5b8e4..01fb455d3377 100644
--- a/block/blk-mq-sysfs.c
+++ b/block/blk-mq-sysfs.c
@@ -176,7 +176,17 @@ static ssize_t blk_mq_sysfs_rq_list_show(struct blk_mq_ctx *ctx, char *page)
static ssize_t blk_mq_hw_sysfs_poll_show(struct blk_mq_hw_ctx *hctx, char *page)
{
- return sprintf(page, "invoked=%lu, success=%lu\n", hctx->poll_invoked, hctx->poll_success);
+ return sprintf(page, "considered=%lu, invoked=%lu, success=%lu\n",
+ hctx->poll_considered, hctx->poll_invoked,
+ hctx->poll_success);
+}
+
+static ssize_t blk_mq_hw_sysfs_poll_store(struct blk_mq_hw_ctx *hctx,
+ const char *page, size_t size)
+{
+ hctx->poll_considered = hctx->poll_invoked = hctx->poll_success = 0;
+
+ return size;
}
static ssize_t blk_mq_hw_sysfs_queued_show(struct blk_mq_hw_ctx *hctx,
@@ -198,12 +208,14 @@ static ssize_t blk_mq_hw_sysfs_dispatched_show(struct blk_mq_hw_ctx *hctx,
page += sprintf(page, "%8u\t%lu\n", 0U, hctx->dispatched[0]);
- for (i = 1; i < BLK_MQ_MAX_DISPATCH_ORDER; i++) {
- unsigned long d = 1U << (i - 1);
+ for (i = 1; i < BLK_MQ_MAX_DISPATCH_ORDER - 1; i++) {
+ unsigned int d = 1U << (i - 1);
- page += sprintf(page, "%8lu\t%lu\n", d, hctx->dispatched[i]);
+ page += sprintf(page, "%8u\t%lu\n", d, hctx->dispatched[i]);
}
+ page += sprintf(page, "%8u+\t%lu\n", 1U << (i - 1),
+ hctx->dispatched[i]);
return page - start_page;
}
@@ -301,8 +313,9 @@ static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_cpus = {
.show = blk_mq_hw_sysfs_cpus_show,
};
static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_poll = {
- .attr = {.name = "io_poll", .mode = S_IRUGO },
+ .attr = {.name = "io_poll", .mode = S_IWUSR | S_IRUGO },
.show = blk_mq_hw_sysfs_poll_show,
+ .store = blk_mq_hw_sysfs_poll_store,
};
static struct attribute *default_hw_ctx_attrs[] = {
@@ -380,9 +393,8 @@ static int blk_mq_register_hctx(struct blk_mq_hw_ctx *hctx)
return ret;
}
-static void __blk_mq_unregister_disk(struct gendisk *disk)
+static void __blk_mq_unregister_dev(struct device *dev, struct request_queue *q)
{
- struct request_queue *q = disk->queue;
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
int i, j;
@@ -400,15 +412,15 @@ static void __blk_mq_unregister_disk(struct gendisk *disk)
kobject_del(&q->mq_kobj);
kobject_put(&q->mq_kobj);
- kobject_put(&disk_to_dev(disk)->kobj);
+ kobject_put(&dev->kobj);
q->mq_sysfs_init_done = false;
}
-void blk_mq_unregister_disk(struct gendisk *disk)
+void blk_mq_unregister_dev(struct device *dev, struct request_queue *q)
{
blk_mq_disable_hotplug();
- __blk_mq_unregister_disk(disk);
+ __blk_mq_unregister_dev(dev, q);
blk_mq_enable_hotplug();
}
@@ -430,10 +442,8 @@ static void blk_mq_sysfs_init(struct request_queue *q)
}
}
-int blk_mq_register_disk(struct gendisk *disk)
+int blk_mq_register_dev(struct device *dev, struct request_queue *q)
{
- struct device *dev = disk_to_dev(disk);
- struct request_queue *q = disk->queue;
struct blk_mq_hw_ctx *hctx;
int ret, i;
@@ -454,7 +464,7 @@ int blk_mq_register_disk(struct gendisk *disk)
}
if (ret)
- __blk_mq_unregister_disk(disk);
+ __blk_mq_unregister_dev(dev, q);
else
q->mq_sysfs_init_done = true;
out:
@@ -462,7 +472,7 @@ out:
return ret;
}
-EXPORT_SYMBOL_GPL(blk_mq_register_disk);
+EXPORT_SYMBOL_GPL(blk_mq_register_dev);
void blk_mq_sysfs_unregister(struct request_queue *q)
{