From: Pavel Begunkov <asml.silence@gmail.com>
Date: Sat, 9 Oct 2021 13:25:42 +0100
Subject: [PATCH] blk-mq: inline hot part of __blk_mq_sched_restart
Git-commit: e9ea15963f3b9d979e1d6d758b8e407775ae6588
Patch-mainline: v5.16-rc1
References: jsc#PED-1183
Extract a fast check out of __block_mq_sched_restart() and inline it for
performance reasons.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/894abaa0998e5999f2fe18f271e5efdfc2c32bd2.1633781740.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
block/blk-mq-sched.c | 4 +---
block/blk-mq-sched.h | 8 +++++++-
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index 27312da7d638..efc1374b8831 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -57,10 +57,8 @@ void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx)
}
EXPORT_SYMBOL_GPL(blk_mq_sched_mark_restart_hctx);
-void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx)
+void __blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx)
{
- if (!test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state))
- return;
clear_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state);
/*
diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h
index e4d367e0b2a3..c97b816c3800 100644
--- a/block/blk-mq-sched.h
+++ b/block/blk-mq-sched.h
@@ -17,7 +17,7 @@ bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,
bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq,
struct list_head *free);
void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx);
-void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
+void __blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
void blk_mq_sched_insert_request(struct request *rq, bool at_head,
bool run_queue, bool async);
@@ -31,6 +31,12 @@ int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e);
void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e);
void blk_mq_sched_free_rqs(struct request_queue *q);
+static inline void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx)
+{
+ if (test_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state))
+ __blk_mq_sched_restart(hctx);
+}
+
static inline bool
blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio,
unsigned int nr_segs)
--
2.35.3