[PATCH 5.10 141/545] block: remove the request_queue to argument request based tracepoints

Greg Kroah-Hartman
2022-08-19T16:04:12Z

From: Christoph Hellwig <hch@lst.de>

[ Upstream commit a54895fa057c67700270777f7661d8d3c7fda88a ]

The request_queue can trivially be derived from the request.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
block/blk-merge.c | 2 +-
block/blk-mq-sched.c | 2 +-
block/blk-mq.c | 8 +++----
drivers/md/dm-rq.c | 2 +-
drivers/s390/scsi/zfcp_fsf.c | 3 +--
include/linux/blktrace_api.h | 5 ++--
include/trace/events/block.h | 30 ++++++++++--------------
kernel/trace/blktrace.c | 44 ++++++++++++++----------------------
8 files changed, 39 insertions(+), 57 deletions(-)

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 006b1f0a59bc..fbba277364f0 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -806,7 +806,7 @@ static struct request *attempt_merge(struct request_queue *q,
*/
blk_account_io_merge_request(next);

- trace_block_rq_merge(q, next);
+ trace_block_rq_merge(next);

/*
* ownership of bio passed from next to req, return 'next' for
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index e0117f5f969d..72e64ba661fc 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -396,7 +396,7 @@ EXPORT_SYMBOL_GPL(blk_mq_sched_try_insert_merge);

void blk_mq_sched_request_inserted(struct request *rq)
{
- trace_block_rq_insert(rq->q, rq);
+ trace_block_rq_insert(rq);
}
EXPORT_SYMBOL_GPL(blk_mq_sched_request_inserted);

diff --git a/block/blk-mq.c b/block/blk-mq.c
index c5d82b21a1cc..90f64bb42fbd 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -733,7 +733,7 @@ void blk_mq_start_request(struct request *rq)
{
struct request_queue *q = rq->q;

- trace_block_rq_issue(q, rq);
+ trace_block_rq_issue(rq);

if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags)) {
rq->io_start_time_ns = ktime_get_ns();
@@ -760,7 +760,7 @@ static void __blk_mq_requeue_request(struct request *rq)

blk_mq_put_driver_tag(rq);

- trace_block_rq_requeue(q, rq);
+ trace_block_rq_requeue(rq);
rq_qos_requeue(q, rq);

if (blk_mq_request_started(rq)) {
@@ -1806,7 +1806,7 @@ static inline void __blk_mq_insert_req_list(struct blk_mq_hw_ctx *hctx,

lockdep_assert_held(&ctx->lock);

- trace_block_rq_insert(hctx->queue, rq);
+ trace_block_rq_insert(rq);

if (at_head)
list_add(&rq->queuelist, &ctx->rq_lists[type]);
@@ -1863,7 +1863,7 @@ void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
*/
list_for_each_entry(rq, list, queuelist) {
BUG_ON(rq->mq_ctx != ctx);
- trace_block_rq_insert(hctx->queue, rq);
+ trace_block_rq_insert(rq);
}

spin_lock(&ctx->lock);
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 4833f4b20b2c..5f933dbb0152 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -397,7 +397,7 @@ static int map_request(struct dm_rq_target_io *tio)
}

/* The target has remapped the I/O so dispatch it */
- trace_block_rq_remap(clone->q, clone, disk_devt(dm_disk(md)),
+ trace_block_rq_remap(clone, disk_devt(dm_disk(md)),
blk_rq_pos(rq));
ret = dm_dispatch_clone_request(clone, rq);
if (ret == BLK_STS_RESOURCE || ret == BLK_STS_DEV_RESOURCE) {
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 6cb963a06777..37d450f46952 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -2359,8 +2359,7 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
}
}

- blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
- sizeof(blktrc));
+ blk_add_driver_data(scsi->request, &blktrc, sizeof(blktrc));
}

/**
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 3b6ff5902edc..05556573b896 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -75,8 +75,7 @@ static inline bool blk_trace_note_message_enabled(struct request_queue *q)
return ret;
}

-extern void blk_add_driver_data(struct request_queue *q, struct request *rq,
- void *data, size_t len);
+extern void blk_add_driver_data(struct request *rq, void *data, size_t len);
extern int blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
struct block_device *bdev,
char __user *arg);
@@ -90,7 +89,7 @@ extern struct attribute_group blk_trace_attr_group;
#else /* !CONFIG_BLK_DEV_IO_TRACE */
# define blk_trace_ioctl(bdev, cmd, arg) (-ENOTTY)
# define blk_trace_shutdown(q) do { } while (0)
-# define blk_add_driver_data(q, rq, data, len) do {} while (0)
+# define blk_add_driver_data(rq, data, len) do {} while (0)
# define blk_trace_setup(q, name, dev, bdev, arg) (-ENOTTY)
# define blk_trace_startstop(q, start) (-ENOTTY)
# define blk_trace_remove(q) (-ENOTTY)
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 34d64ca306b1..76a6b3bbc01f 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -64,7 +64,6 @@ DEFINE_EVENT(block_buffer, block_dirty_buffer,

/**
* block_rq_requeue - place block IO request back on a queue
- * @q: queue holding operation
* @rq: block IO operation request
*
* The block operation request @rq is being placed back into queue
@@ -73,9 +72,9 @@ DEFINE_EVENT(block_buffer, block_dirty_buffer,
*/
TRACE_EVENT(block_rq_requeue,

- TP_PROTO(struct request_queue *q, struct request *rq),
+ TP_PROTO(struct request *rq),

- TP_ARGS(q, rq),
+ TP_ARGS(rq),

TP_STRUCT__entry(
__field( dev_t, dev )
@@ -147,9 +146,9 @@ TRACE_EVENT(block_rq_complete,

DECLARE_EVENT_CLASS(block_rq,

- TP_PROTO(struct request_queue *q, struct request *rq),
+ TP_PROTO(struct request *rq),

- TP_ARGS(q, rq),
+ TP_ARGS(rq),

TP_STRUCT__entry(
__field( dev_t, dev )
@@ -181,7 +180,6 @@ DECLARE_EVENT_CLASS(block_rq,

/**
* block_rq_insert - insert block operation request into queue
- * @q: target queue
* @rq: block IO operation request
*
* Called immediately before block operation request @rq is inserted
@@ -191,14 +189,13 @@ DECLARE_EVENT_CLASS(block_rq,
*/
DEFINE_EVENT(block_rq, block_rq_insert,

- TP_PROTO(struct request_queue *q, struct request *rq),
+ TP_PROTO(struct request *rq),

- TP_ARGS(q, rq)
+ TP_ARGS(rq)
);

/**
* block_rq_issue - issue pending block IO request operation to device driver
- * @q: queue holding operation
* @rq: block IO operation operation request
*
* Called when block operation request @rq from queue @q is sent to a
@@ -206,14 +203,13 @@ DEFINE_EVENT(block_rq, block_rq_insert,
*/
DEFINE_EVENT(block_rq, block_rq_issue,

- TP_PROTO(struct request_queue *q, struct request *rq),
+ TP_PROTO(struct request *rq),

- TP_ARGS(q, rq)
+ TP_ARGS(rq)
);

/**
* block_rq_merge - merge request with another one in the elevator
- * @q: queue holding operation
* @rq: block IO operation operation request
*
* Called when block operation request @rq from queue @q is merged to another
@@ -221,9 +217,9 @@ DEFINE_EVENT(block_rq, block_rq_issue,
*/
DEFINE_EVENT(block_rq, block_rq_merge,

- TP_PROTO(struct request_queue *q, struct request *rq),
+ TP_PROTO(struct request *rq),

- TP_ARGS(q, rq)
+ TP_ARGS(rq)
);

/**
@@ -605,7 +601,6 @@ TRACE_EVENT(block_bio_remap,

/**
* block_rq_remap - map request for a block operation request
- * @q: queue holding the operation
* @rq: block IO operation request
* @dev: device for the operation
* @from: original sector for the operation
@@ -616,10 +611,9 @@ TRACE_EVENT(block_bio_remap,
*/
TRACE_EVENT(block_rq_remap,

- TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
- sector_t from),
+ TP_PROTO(struct request *rq, dev_t dev, sector_t from),

- TP_ARGS(q, rq, dev, from),
+ TP_ARGS(rq, dev, from),

TP_STRUCT__entry(
__field( dev_t, dev )
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index b89ff188a618..7f625400763b 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -800,12 +800,12 @@ static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio)
#endif

static u64
-blk_trace_request_get_cgid(struct request_queue *q, struct request *rq)
+blk_trace_request_get_cgid(struct request *rq)
{
if (!rq->bio)
return 0;
/* Use the first bio */
- return blk_trace_bio_get_cgid(q, rq->bio);
+ return blk_trace_bio_get_cgid(rq->q, rq->bio);
}

/*
@@ -846,40 +846,35 @@ static void blk_add_trace_rq(struct request *rq, int error,
rcu_read_unlock();
}

-static void blk_add_trace_rq_insert(void *ignore,
- struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_insert(void *ignore, struct request *rq)
{
blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_INSERT,
- blk_trace_request_get_cgid(q, rq));
+ blk_trace_request_get_cgid(rq));
}

-static void blk_add_trace_rq_issue(void *ignore,
- struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_issue(void *ignore, struct request *rq)
{
blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_ISSUE,
- blk_trace_request_get_cgid(q, rq));
+ blk_trace_request_get_cgid(rq));
}

-static void blk_add_trace_rq_merge(void *ignore,
- struct request_queue *q, struct request *rq)
+static void blk_add_trace_rq_merge(void *ignore, struct request *rq)
{
blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_BACKMERGE,
- blk_trace_request_get_cgid(q, rq));
+ blk_trace_request_get_cgid(rq));
}

-static void blk_add_trace_rq_requeue(void *ignore,
- struct request_queue *q,
- struct request *rq)
+static void blk_add_trace_rq_requeue(void *ignore, struct request *rq)
{
blk_add_trace_rq(rq, 0, blk_rq_bytes(rq), BLK_TA_REQUEUE,
- blk_trace_request_get_cgid(q, rq));
+ blk_trace_request_get_cgid(rq));
}

static void blk_add_trace_rq_complete(void *ignore, struct request *rq,
int error, unsigned int nr_bytes)
{
blk_add_trace_rq(rq, error, nr_bytes, BLK_TA_COMPLETE,
- blk_trace_request_get_cgid(rq->q, rq));
+ blk_trace_request_get_cgid(rq));
}

/**
@@ -1087,16 +1082,14 @@ static void blk_add_trace_bio_remap(void *ignore,
* Add a trace for that action.
*
**/
-static void blk_add_trace_rq_remap(void *ignore,
- struct request_queue *q,
- struct request *rq, dev_t dev,
+static void blk_add_trace_rq_remap(void *ignore, struct request *rq, dev_t dev,
sector_t from)
{
struct blk_trace *bt;
struct blk_io_trace_remap r;

rcu_read_lock();
- bt = rcu_dereference(q->blk_trace);
+ bt = rcu_dereference(rq->q->blk_trace);
if (likely(!bt)) {
rcu_read_unlock();
return;
@@ -1108,13 +1101,12 @@ static void blk_add_trace_rq_remap(void *ignore,

__blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq),
rq_data_dir(rq), 0, BLK_TA_REMAP, 0,
- sizeof(r), &r, blk_trace_request_get_cgid(q, rq));
+ sizeof(r), &r, blk_trace_request_get_cgid(rq));
rcu_read_unlock();
}

/**
* blk_add_driver_data - Add binary message with driver-specific data
- * @q: queue the io is for
* @rq: io request
* @data: driver-specific data
* @len: length of driver-specific data
@@ -1123,14 +1115,12 @@ static void blk_add_trace_rq_remap(void *ignore,
* Some drivers might want to write driver-specific data per request.
*
**/
-void blk_add_driver_data(struct request_queue *q,
- struct request *rq,
- void *data, size_t len)
+void blk_add_driver_data(struct request *rq, void *data, size_t len)
{
struct blk_trace *bt;

rcu_read_lock();
- bt = rcu_dereference(q->blk_trace);
+ bt = rcu_dereference(rq->q->blk_trace);
if (likely(!bt)) {
rcu_read_unlock();
return;
@@ -1138,7 +1128,7 @@ void blk_add_driver_data(struct request_queue *q,

__blk_add_trace(bt, blk_rq_trace_sector(rq), blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, 0, len, data,
- blk_trace_request_get_cgid(q, rq));
+ blk_trace_request_get_cgid(rq));
rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(blk_add_driver_data);
--
2.35.1