diff options
| -rw-r--r-- | block/blk-wbt.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c index 463e4eb80287..f0c56649775f 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -715,6 +715,94 @@ void wbt_disable_default(struct request_queue *q) } EXPORT_SYMBOL_GPL(wbt_disable_default); +#ifdef CONFIG_BLK_DEBUG_FS +static int wbt_curr_win_nsec_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + struct rq_wb *rwb = RQWB(rqos); + + seq_printf(m, "%llu\n", rwb->cur_win_nsec); + return 0; +} + +static int wbt_enabled_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + struct rq_wb *rwb = RQWB(rqos); + + seq_printf(m, "%d\n", rwb->enable_state); + return 0; +} + +static int wbt_id_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + + seq_printf(m, "%u\n", rqos->id); + return 0; +} + +static int wbt_inflight_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + struct rq_wb *rwb = RQWB(rqos); + int i; + + for (i = 0; i < WBT_NUM_RWQ; i++) + seq_printf(m, "%d: inflight %d\n", i, + atomic_read(&rwb->rq_wait[i].inflight)); + return 0; +} + +static int wbt_min_lat_nsec_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + struct rq_wb *rwb = RQWB(rqos); + + seq_printf(m, "%lu\n", rwb->min_lat_nsec); + return 0; +} + +static int wbt_unknown_cnt_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + struct rq_wb *rwb = RQWB(rqos); + + seq_printf(m, "%u\n", rwb->unknown_cnt); + return 0; +} + +static int wbt_normal_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + struct rq_wb *rwb = RQWB(rqos); + + seq_printf(m, "%u\n", rwb->wb_normal); + return 0; +} + +static int wbt_background_show(void *data, struct seq_file *m) +{ + struct rq_qos *rqos = data; + struct rq_wb *rwb = RQWB(rqos); + + seq_printf(m, "%u\n", rwb->wb_background); + return 0; +} + +static const struct blk_mq_debugfs_attr wbt_debugfs_attrs[] = { + {"curr_win_nsec", 0400, wbt_curr_win_nsec_show}, + {"enabled", 0400, wbt_enabled_show}, + {"id", 0400, wbt_id_show}, + {"inflight", 0400, wbt_inflight_show}, + {"min_lat_nsec", 0400, wbt_min_lat_nsec_show}, + {"unknown_cnt", 0400, wbt_unknown_cnt_show}, + {"wb_normal", 0400, wbt_normal_show}, + {"wb_background", 0400, wbt_background_show}, + {}, +}; +#endif + static struct rq_qos_ops wbt_rqos_ops = { .throttle = wbt_wait, .issue = wbt_issue, @@ -723,6 +811,9 @@ static struct rq_qos_ops wbt_rqos_ops = { .done = wbt_done, .cleanup = wbt_cleanup, .exit = wbt_exit, +#ifdef CONFIG_BLK_DEBUG_FS + .debugfs_attrs = wbt_debugfs_attrs, +#endif }; int wbt_init(struct request_queue *q) |