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block: remove the unused block_sleeprq tracepoint

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The block_sleeprq tracepoint was only used by the legacy request code.
Remove it now that the legacy request code is gone.

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>
This commit is contained in:
Christoph Hellwig 2020-12-03 17:21:35 +01:00 committed by Jens Axboe
parent acaf523a7b
commit b81b8f40c5
2 changed files with 0 additions and 40 deletions
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18
include/trace/events/block.h
View File

@ -441,24 +441,6 @@ DEFINE_EVENT(block_get_rq, block_getrq,
TP_ARGS(q, bio, rw)
);
/**
* block_sleeprq - waiting to get a free request entry in queue for block IO operation
* @q: queue for operation
* @bio: pending block IO operation (can be %NULL)
* @rw: low bit indicates a read (%0) or a write (%1)
*
* In the case where a request struct cannot be provided for queue @q
* the process needs to wait for an request struct to become
* available. This tracepoint event is generated each time the
* process goes to sleep waiting for request struct become available.
*/
DEFINE_EVENT(block_get_rq, block_sleeprq,
TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
TP_ARGS(q, bio, rw)
);
/**
* block_plug - keep operations requests in request queue
* @q: request queue to plug

22
kernel/trace/blktrace.c
View File

@ -959,25 +959,6 @@ static void blk_add_trace_getrq(void *ignore,
}
}
static void blk_add_trace_sleeprq(void *ignore,
struct request_queue *q,
struct bio *bio, int rw)
{
if (bio)
blk_add_trace_bio(q, bio, BLK_TA_SLEEPRQ, 0);
else {
struct blk_trace *bt;
rcu_read_lock();
bt = rcu_dereference(q->blk_trace);
if (bt)
__blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_SLEEPRQ,
0, 0, NULL, 0);
rcu_read_unlock();
}
}
static void blk_add_trace_plug(void *ignore, struct request_queue *q)
{
struct blk_trace *bt;
@ -1164,8 +1145,6 @@ static void blk_register_tracepoints(void)
WARN_ON(ret);
ret = register_trace_block_getrq(blk_add_trace_getrq, NULL);
WARN_ON(ret);
ret = register_trace_block_sleeprq(blk_add_trace_sleeprq, NULL);
WARN_ON(ret);
ret = register_trace_block_plug(blk_add_trace_plug, NULL);
WARN_ON(ret);
ret = register_trace_block_unplug(blk_add_trace_unplug, NULL);
@ -1185,7 +1164,6 @@ static void blk_unregister_tracepoints(void)
unregister_trace_block_split(blk_add_trace_split, NULL);
unregister_trace_block_unplug(blk_add_trace_unplug, NULL);
unregister_trace_block_plug(blk_add_trace_plug, NULL);
unregister_trace_block_sleeprq(blk_add_trace_sleeprq, NULL);
unregister_trace_block_getrq(blk_add_trace_getrq, NULL);
unregister_trace_block_bio_queue(blk_add_trace_bio_queue, NULL);
unregister_trace_block_bio_frontmerge(blk_add_trace_bio_frontmerge, NULL);