From: Jeffle Xu <[email protected]>
To: [email protected], [email protected]
Cc: [email protected], [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Subject: [PATCH v4 02/12] block: add queue_to_disk() to get gendisk from request_queue
Date: Sat, 20 Feb 2021 19:06:27 +0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Sometimes we need to get the corresponding gendisk from request_queue.
It is preferred that block drivers store private data in
gendisk->private_data rather than request_queue->queuedata, e.g. see:
commit c4a59c4e5db3 ("dm: stop using ->queuedata").
So if only request_queue is given, we need to get its corresponding
gendisk to get the private data stored in that gendisk.
Signed-off-by: Jeffle Xu <[email protected]>
Reviewed-by: Mike Snitzer <[email protected]>
---
include/linux/blkdev.h | 2 ++
include/trace/events/kyber.h | 6 +++---
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f94ee3089e01..2a802e011a95 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -687,6 +687,8 @@ static inline bool blk_account_rq(struct request *rq)
dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \
(dir), (attrs))
+#define queue_to_disk(q) (dev_to_disk(kobj_to_dev((q)->kobj.parent)))
+
static inline bool queue_is_mq(struct request_queue *q)
{
return q->mq_ops;
diff --git a/include/trace/events/kyber.h b/include/trace/events/kyber.h
index c0e7d24ca256..f9802562edf6 100644
--- a/include/trace/events/kyber.h
+++ b/include/trace/events/kyber.h
@@ -30,7 +30,7 @@ TRACE_EVENT(kyber_latency,
),
TP_fast_assign(
- __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent)));
+ __entry->dev = disk_devt(queue_to_disk(q));
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
strlcpy(__entry->type, type, sizeof(__entry->type));
__entry->percentile = percentile;
@@ -59,7 +59,7 @@ TRACE_EVENT(kyber_adjust,
),
TP_fast_assign(
- __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent)));
+ __entry->dev = disk_devt(queue_to_disk(q));
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
__entry->depth = depth;
),
@@ -81,7 +81,7 @@ TRACE_EVENT(kyber_throttled,
),
TP_fast_assign(
- __entry->dev = disk_devt(dev_to_disk(kobj_to_dev(q->kobj.parent)));
+ __entry->dev = disk_devt(queue_to_disk(q));
strlcpy(__entry->domain, domain, sizeof(__entry->domain));
),
--
2.27.0
next prev parent reply other threads:[~2021-02-20 11:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-20 11:06 [PATCH v4 00/12] dm: support IO polling Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 01/12] block: move definition of blk_qc_t to types.h Jeffle Xu
2021-02-20 11:06 ` Jeffle Xu [this message]
2021-02-20 11:06 ` [PATCH v4 03/12] block: add poll method to support bio-based IO polling Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 04/12] block: add poll_capable " Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 05/12] blk-mq: extract one helper function polling hw queue Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 06/12] blk-mq: add iterator for polling hw queues Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 07/12] blk-mq: add one helper function getting hw queue Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 08/12] dm: always return BLK_QC_T_NONE for bio-based device Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 09/12] nvme/pci: don't wait for locked polling queue Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 10/12] block: fastpath for bio-based polling Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 11/12] block: sub-fastpath " Jeffle Xu
2021-02-20 11:06 ` [PATCH v4 12/12] dm: support IO polling for bio-based dm device Jeffle Xu
2021-02-23 3:55 ` [PATCH v4 00/12] dm: support IO polling JeffleXu
2021-02-23 20:54 ` Mike Snitzer
2021-02-24 1:44 ` JeffleXu
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