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 06/12] blk-mq: add iterator for polling hw queues
Date: Wed, 3 Mar 2021 19:57:34 +0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Add one helper function for iterating all hardware queues in polling
mode.
Signed-off-by: Jeffle Xu <[email protected]>
---
include/linux/blk-mq.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index b406cab347d6..d22269b3dbe9 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -582,6 +582,13 @@ static inline void *blk_mq_rq_to_pdu(struct request *rq)
for ((i) = 0; (i) < (q)->nr_hw_queues && \
({ hctx = (q)->queue_hw_ctx[i]; 1; }); (i)++)
+#define queue_for_each_poll_hw_ctx(q, hctx, i) \
+ for ((i) = 0; ((q)->tag_set->nr_maps > HCTX_TYPE_POLL) && \
+ (i) < (q)->tag_set->map[HCTX_TYPE_POLL].nr_queues && \
+ ({ int __idx = (q)->tag_set->map[HCTX_TYPE_POLL].queue_offset + (i); \
+ hctx = (q)->queue_hw_ctx[__idx]; 1; }); \
+ (i)++)
+
#define hctx_for_each_ctx(hctx, ctx, i) \
for ((i) = 0; (i) < (hctx)->nr_ctx && \
({ ctx = (hctx)->ctxs[(i)]; 1; }); (i)++)
--
2.27.0
next prev parent reply other threads:[~2021-03-04 0:24 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 ` Jeffle Xu [this message]
2021-03-03 11:57 ` [PATCH v5 07/12] blk-mq: add one helper function getting " Jeffle Xu
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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