From: Jeffle Xu <[email protected]>
To: [email protected], [email protected]
Cc: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Subject: [PATCH v5 07/12] blk-mq: add one helper function getting hw queue
Date: Wed, 3 Mar 2021 19:57:35 +0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Add one helper function getting hw queue mapping to specific CPU, and of
specific type.
Signed-off-by: Jeffle Xu <[email protected]>
---
block/blk-mq.c | 10 ++++++++++
include/linux/blk-mq.h | 2 ++
2 files changed, 12 insertions(+)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 6ef9f0b038c2..72390f208c82 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3902,6 +3902,16 @@ unsigned int blk_mq_rq_cpu(struct request *rq)
}
EXPORT_SYMBOL(blk_mq_rq_cpu);
+
+struct blk_mq_hw_ctx *blk_mq_get_hctx(struct request_queue *q, int cpu,
+ unsigned int flags)
+{
+ struct blk_mq_ctx *ctx = __blk_mq_get_ctx(q, cpu);
+
+ return blk_mq_map_queue(q, flags, ctx);
+}
+EXPORT_SYMBOL(blk_mq_get_hctx);
+
static int __init blk_mq_init(void)
{
int i;
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index d22269b3dbe9..149f6a9d9aa7 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -638,5 +638,7 @@ blk_qc_t blk_mq_submit_bio(struct bio *bio);
int blk_mq_poll(struct request_queue *q, blk_qc_t cookie, bool spin);
void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx,
struct lock_class_key *key);
+struct blk_mq_hw_ctx *blk_mq_get_hctx(struct request_queue *q, int cpu,
+ unsigned int flags);
#endif
--
2.27.0
next prev parent reply other threads:[~2021-03-04 0:26 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 11:57 [PATCH v5 00/12] dm: support polling Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 01/12] block: move definition of blk_qc_t to types.h Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 02/12] block: add queue_to_disk() to get gendisk from request_queue Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 03/12] block: add poll method to support bio-based IO polling Jeffle Xu
2021-03-10 22:01 ` Mike Snitzer
2021-03-11 5:31 ` [dm-devel] " JeffleXu
2021-03-03 11:57 ` [PATCH v5 04/12] block: add poll_capable " Jeffle Xu
2021-03-10 22:21 ` Mike Snitzer
2021-03-11 5:43 ` [dm-devel] " JeffleXu
2021-03-03 11:57 ` [PATCH v5 05/12] blk-mq: extract one helper function polling hw queue Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 06/12] blk-mq: add iterator for polling hw queues Jeffle Xu
2021-03-03 11:57 ` Jeffle Xu [this message]
2021-03-03 11:57 ` [PATCH v5 08/12] dm: always return BLK_QC_T_NONE for bio-based device Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 09/12] nvme/pci: don't wait for locked polling queue Jeffle Xu
2021-03-10 21:57 ` Mike Snitzer
2021-03-03 11:57 ` [PATCH v5 10/12] block: fastpath for bio-based polling Jeffle Xu
2021-03-10 23:18 ` Mike Snitzer
2021-03-11 6:36 ` [dm-devel] " JeffleXu
2021-03-12 2:26 ` JeffleXu
2021-03-11 13:56 ` Ming Lei
2021-03-12 1:56 ` [dm-devel] " JeffleXu
2021-03-03 11:57 ` [PATCH v5 11/12] block: sub-fastpath " Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 12/12] dm: support IO polling for bio-based dm device Jeffle Xu
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