diff options
Diffstat (limited to 'block/blk-sysfs.c')
| -rw-r--r-- | block/blk-sysfs.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 415e764807d0..dcdfcaa12653 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -350,6 +350,28 @@ queue_rq_affinity_store(struct request_queue *q, const char *page, size_t count) return ret; } +static ssize_t queue_poll_delay_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->poll_nsec / 1000, page); +} + +static ssize_t queue_poll_delay_store(struct request_queue *q, const char *page, + size_t count) +{ + unsigned long poll_usec; + ssize_t ret; + + if (!q->mq_ops || !q->mq_ops->poll) + return -EINVAL; + + ret = queue_var_store(&poll_usec, page, count); + if (ret < 0) + return ret; + + q->poll_nsec = poll_usec * 1000; + 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); @@ -602,6 +624,12 @@ static struct queue_sysfs_entry queue_poll_entry = { .store = queue_poll_store, }; +static struct queue_sysfs_entry queue_poll_delay_entry = { + .attr = {.name = "io_poll_delay", .mode = S_IRUGO | S_IWUSR }, + .show = queue_poll_delay_show, + .store = queue_poll_delay_store, +}; + static struct queue_sysfs_entry queue_wc_entry = { .attr = {.name = "write_cache", .mode = S_IRUGO | S_IWUSR }, .show = queue_wc_show, @@ -655,6 +683,7 @@ static struct attribute *default_attrs[] = { &queue_dax_entry.attr, &queue_stats_entry.attr, &queue_wb_lat_entry.attr, + &queue_poll_delay_entry.attr, NULL, }; |