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From: John Garry <john.garry@huawei.com>
To: <axboe@kernel.dk>
Cc: <linux-block@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<ming.lei@redhat.com>, John Garry <john.garry@huawei.com>
Subject: [PATCH] blk-mq-debugfs: Show active requests per queue for shared tags
Date: Fri, 29 Oct 2021 16:40:23 +0800	[thread overview]
Message-ID: <1635496823-33515-1-git-send-email-john.garry@huawei.com> (raw)

Currently we show the hctx.active value for the per-hctx "active" file.

However this is not maintained for shared tags, and we instead keep a
record of the number active requests per request queue - see commit
f1b49fdc1c64 ("blk-mq: Record active_queues_shared_sbitmap per tag_set for
when using shared sbitmap).

Change for the case of shared tags to show the active requests per request
queue by using __blk_mq_active_requests() helper.

Signed-off-by: John Garry <john.garry@huawei.com>

diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 68ca5d21cda7..0f8c60e9c719 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -550,7 +550,7 @@ static int hctx_active_show(void *data, struct seq_file *m)
 {
 	struct blk_mq_hw_ctx *hctx = data;
 
-	seq_printf(m, "%d\n", atomic_read(&hctx->nr_active));
+	seq_printf(m, "%d\n", __blk_mq_active_requests(hctx));
 	return 0;
 }
 
-- 
2.17.1


             reply	other threads:[~2021-10-29  8:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-29  8:40 John Garry [this message]
2021-10-29 12:53 ` [PATCH] blk-mq-debugfs: Show active requests per queue for shared tags Jens Axboe

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