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block: remove block_unplug_timer() trace point

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We no longer have an unplug timer running, so no point in keeping
the trace point.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Jens Axboe 2011-04-12 10:06:33 +02:00
parent 109b81296c
commit d9c9783317
2 changed files with 0 additions and 31 deletions
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14
include/trace/events/block.h
View file

@ -418,20 +418,6 @@ DECLARE_EVENT_CLASS(block_unplug,
TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
);
/**
* block_unplug_timer - timed release of operations requests in queue to device driver
* @q: request queue to unplug
*
* Unplug the request queue @q because a timer expired and allow block
* operation requests to be sent to the device driver.
*/
DEFINE_EVENT(block_unplug, block_unplug_timer,
TP_PROTO(struct request_queue *q),
TP_ARGS(q)
);
/**
* block_unplug_io - release of operations requests in request queue
* @q: request queue to unplug

17
kernel/trace/blktrace.c
View file

@ -863,19 +863,6 @@ static void blk_add_trace_unplug_io(void *ignore, struct request_queue *q)
}
}
static void blk_add_trace_unplug_timer(void *ignore, struct request_queue *q)
{
struct blk_trace *bt = q->blk_trace;
if (bt) {
unsigned int pdu = q->rq.count[READ] + q->rq.count[WRITE];
__be64 rpdu = cpu_to_be64(pdu);
__blk_add_trace(bt, 0, 0, 0, BLK_TA_UNPLUG_TIMER, 0,
sizeof(rpdu), &rpdu);
}
}
static void blk_add_trace_split(void *ignore,
struct request_queue *q, struct bio *bio,
unsigned int pdu)
@ -1015,8 +1002,6 @@ static void blk_register_tracepoints(void)
WARN_ON(ret);
ret = register_trace_block_plug(blk_add_trace_plug, NULL);
WARN_ON(ret);
ret = register_trace_block_unplug_timer(blk_add_trace_unplug_timer, NULL);
WARN_ON(ret);
ret = register_trace_block_unplug_io(blk_add_trace_unplug_io, NULL);
WARN_ON(ret);
ret = register_trace_block_split(blk_add_trace_split, NULL);
@ -1033,7 +1018,6 @@ static void blk_unregister_tracepoints(void)
unregister_trace_block_bio_remap(blk_add_trace_bio_remap, NULL);
unregister_trace_block_split(blk_add_trace_split, NULL);
unregister_trace_block_unplug_io(blk_add_trace_unplug_io, NULL);
unregister_trace_block_unplug_timer(blk_add_trace_unplug_timer, 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);
@ -1348,7 +1332,6 @@ static const struct {
[__BLK_TA_COMPLETE] = {{ "C", "complete" }, blk_log_with_error },
[__BLK_TA_PLUG] = {{ "P", "plug" }, blk_log_plug },
[__BLK_TA_UNPLUG_IO] = {{ "U", "unplug_io" }, blk_log_unplug },
[__BLK_TA_UNPLUG_TIMER] = {{ "UT", "unplug_timer" }, blk_log_unplug },
[__BLK_TA_INSERT] = {{ "I", "insert" }, blk_log_generic },
[__BLK_TA_SPLIT] = {{ "X", "split" }, blk_log_split },
[__BLK_TA_BOUNCE] = {{ "B", "bounce" }, blk_log_generic },