diff options
Diffstat (limited to 'block/blk-sysfs.c')
| -rw-r--r-- | block/blk-sysfs.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 8717d43e0792..741b95dfdbf6 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -272,6 +272,34 @@ static ssize_t queue_nr_zones_show(struct gendisk *disk, char *page) return queue_var_show(disk_nr_zones(disk), page); } +static ssize_t queue_iostats_passthrough_show(struct gendisk *disk, char *page) +{ + return queue_var_show(blk_queue_passthrough_stat(disk->queue), page); +} + +static ssize_t queue_iostats_passthrough_store(struct gendisk *disk, + const char *page, size_t count) +{ + struct queue_limits lim; + unsigned long ios; + ssize_t ret; + + ret = queue_var_store(&ios, page, count); + if (ret < 0) + return ret; + + lim = queue_limits_start_update(disk->queue); + if (ios) + lim.flags |= BLK_FLAG_IOSTATS_PASSTHROUGH; + else + lim.flags &= ~BLK_FLAG_IOSTATS_PASSTHROUGH; + + ret = queue_limits_commit_update(disk->queue, &lim); + if (ret) + return ret; + + return count; +} static ssize_t queue_nomerges_show(struct gendisk *disk, char *page) { return queue_var_show((blk_queue_nomerges(disk->queue) << 1) | @@ -460,6 +488,7 @@ QUEUE_RO_ENTRY(queue_max_open_zones, "max_open_zones"); QUEUE_RO_ENTRY(queue_max_active_zones, "max_active_zones"); QUEUE_RW_ENTRY(queue_nomerges, "nomerges"); +QUEUE_RW_ENTRY(queue_iostats_passthrough, "iostats_passthrough"); QUEUE_RW_ENTRY(queue_rq_affinity, "rq_affinity"); QUEUE_RW_ENTRY(queue_poll, "io_poll"); QUEUE_RW_ENTRY(queue_poll_delay, "io_poll_delay"); @@ -586,6 +615,7 @@ static struct attribute *queue_attrs[] = { &queue_max_open_zones_entry.attr, &queue_max_active_zones_entry.attr, &queue_nomerges_entry.attr, + &queue_iostats_passthrough_entry.attr, &queue_iostats_entry.attr, &queue_stable_writes_entry.attr, &queue_add_random_entry.attr, |