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authorJens Axboe <jaxboe@fusionio.com>2011-04-16 13:51:05 +0200
committerJens Axboe <jaxboe@fusionio.com>2011-04-16 13:51:05 +0200
commit49cac01e1fa74174d72adb0e872504a7fefd7c01 (patch)
treea1ab1974eceea3179a604413955ad8369ba715d7 /include
parenta237c1c5bc5dc5c76a21be922dca4826f3eca8ca (diff)
block: make unplug timer trace event correspond to the schedule() unplug
It's a pretty close match to what we had before - the timer triggering would mean that nobody unplugged the plug in due time, in the new scheme this matches very closely what the schedule() unplug now is. It's essentially the difference between an explicit unplug (IO unplug) or an implicit unplug (timer unplug, we scheduled with pending IO queued). Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'include')
-rw-r--r--include/trace/events/block.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 006e60b5830..bf366547da2 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -401,9 +401,9 @@ TRACE_EVENT(block_plug,
DECLARE_EVENT_CLASS(block_unplug,
- TP_PROTO(struct request_queue *q, unsigned int depth),
+ TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
- TP_ARGS(q, depth),
+ TP_ARGS(q, depth, explicit),
TP_STRUCT__entry(
__field( int, nr_rq )
@@ -419,18 +419,19 @@ DECLARE_EVENT_CLASS(block_unplug,
);
/**
- * block_unplug_io - release of operations requests in request queue
+ * block_unplug - release of operations requests in request queue
* @q: request queue to unplug
* @depth: number of requests just added to the queue
+ * @explicit: whether this was an explicit unplug, or one from schedule()
*
* Unplug request queue @q because device driver is scheduled to work
* on elements in the request queue.
*/
-DEFINE_EVENT(block_unplug, block_unplug_io,
+DEFINE_EVENT(block_unplug, block_unplug,
- TP_PROTO(struct request_queue *q, unsigned int depth),
+ TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
- TP_ARGS(q, depth)
+ TP_ARGS(q, depth, explicit)
);
/**