From 0206319fdfee7c36b97aa6c0561bab206132f813 Mon Sep 17 00:00:00 2001 From: Stephen Bates Date: Thu, 20 Apr 2017 16:59:11 -0600 Subject: blk-mq: Fix poll_stat for new size-based bucketing. Fixes an issue where the size of the poll_stat array in request_queue does not match the size expected by the new size based bucketing for IO completion polling. Fixes: 720b8ccc4500 ("blk-mq: Add a polling specific stats function") Signed-off-by: Stephen Bates Signed-off-by: Jens Axboe --- block/blk-mq-debugfs.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'block/blk-mq-debugfs.c') diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index df9b688b877c..3057641d5d15 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -159,14 +159,17 @@ static void print_stat(struct seq_file *m, struct blk_rq_stat *stat) static int queue_poll_stat_show(struct seq_file *m, void *v) { struct request_queue *q = m->private; + int bucket; - seq_puts(m, "read: "); - print_stat(m, &q->poll_stat[READ]); - seq_puts(m, "\n"); + for (bucket = 0; bucket < BLK_MQ_POLL_STATS_BKTS/2; bucket++) { + seq_printf(m, "read (%d Bytes): ", 1 << (9+bucket)); + print_stat(m, &q->poll_stat[2*bucket]); + seq_puts(m, "\n"); - seq_puts(m, "write: "); - print_stat(m, &q->poll_stat[WRITE]); - seq_puts(m, "\n"); + seq_printf(m, "write (%d Bytes): ", 1 << (9+bucket)); + print_stat(m, &q->poll_stat[2*bucket+1]); + seq_puts(m, "\n"); + } return 0; } -- cgit v1.2.3