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From: Jeffle Xu <jefflexu@linux.alibaba.com>
To: msnitzer@redhat.com, axboe@kernel.dk
Cc: io-uring@vger.kernel.org, dm-devel@redhat.com,
	linux-block@vger.kernel.org, mpatocka@redhat.com,
	caspar@linux.alibaba.com, joseph.qi@linux.alibaba.com
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: <20210303115740.127001-7-jefflexu@linux.alibaba.com> (raw)
In-Reply-To: <20210303115740.127001-1-jefflexu@linux.alibaba.com>

Add one helper function for iterating all hardware queues in polling
mode.

Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
---
 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


WARNING: multiple messages have this Message-ID (diff)
From: Jeffle Xu <jefflexu@linux.alibaba.com>
To: msnitzer@redhat.com, axboe@kernel.dk
Cc: caspar@linux.alibaba.com, linux-block@vger.kernel.org,
	joseph.qi@linux.alibaba.com, dm-devel@redhat.com,
	mpatocka@redhat.com, io-uring@vger.kernel.org
Subject: [dm-devel] [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: <20210303115740.127001-7-jefflexu@linux.alibaba.com> (raw)
In-Reply-To: <20210303115740.127001-1-jefflexu@linux.alibaba.com>

Add one helper function for iterating all hardware queues in polling
mode.

Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
---
 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

--
dm-devel mailing list
dm-devel@redhat.com
https://listman.redhat.com/mailman/listinfo/dm-devel


  parent reply	other threads:[~2021-03-03 16:43 UTC|newest]

Thread overview: 46+ 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 ` [dm-devel] " 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   ` [dm-devel] " 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   ` [dm-devel] " Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 03/12] block: add poll method to support bio-based IO polling Jeffle Xu
2021-03-03 11:57   ` [dm-devel] " Jeffle Xu
2021-03-10 22:01   ` Mike Snitzer
2021-03-10 22:01     ` [dm-devel] " Mike Snitzer
2021-03-11  5:31     ` JeffleXu
2021-03-11  5:31       ` JeffleXu
2021-03-03 11:57 ` [PATCH v5 04/12] block: add poll_capable " Jeffle Xu
2021-03-03 11:57   ` [dm-devel] " Jeffle Xu
2021-03-10 22:21   ` Mike Snitzer
2021-03-10 22:21     ` [dm-devel] " Mike Snitzer
2021-03-11  5:43     ` JeffleXu
2021-03-11  5:43       ` 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   ` [dm-devel] " Jeffle Xu
2021-03-03 11:57 ` Jeffle Xu [this message]
2021-03-03 11:57   ` [dm-devel] [PATCH v5 06/12] blk-mq: add iterator for polling hw queues Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 07/12] blk-mq: add one helper function getting hw queue Jeffle Xu
2021-03-03 11:57   ` [dm-devel] " 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   ` [dm-devel] " Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 09/12] nvme/pci: don't wait for locked polling queue Jeffle Xu
2021-03-03 11:57   ` [dm-devel] " Jeffle Xu
2021-03-10 21:57   ` Mike Snitzer
2021-03-10 21:57     ` [dm-devel] " Mike Snitzer
2021-03-03 11:57 ` [PATCH v5 10/12] block: fastpath for bio-based polling Jeffle Xu
2021-03-03 11:57   ` [dm-devel] " Jeffle Xu
2021-03-10 23:18   ` Mike Snitzer
2021-03-10 23:18     ` [dm-devel] " Mike Snitzer
2021-03-11  6:36     ` JeffleXu
2021-03-11  6:36       ` JeffleXu
2021-03-12  2:26       ` JeffleXu
2021-03-12  2:26         ` JeffleXu
2021-03-11 13:56   ` Ming Lei
2021-03-11 13:56     ` [dm-devel] " Ming Lei
2021-03-12  1:56     ` JeffleXu
2021-03-12  1:56       ` JeffleXu
2021-03-03 11:57 ` [PATCH v5 11/12] block: sub-fastpath " Jeffle Xu
2021-03-03 11:57   ` [dm-devel] " Jeffle Xu
2021-03-03 11:57 ` [PATCH v5 12/12] dm: support IO polling for bio-based dm device Jeffle Xu
2021-03-03 11:57   ` [dm-devel] " Jeffle Xu

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