block: remove block_unplug_timer() trace point

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

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 78f18adb49c88fee50ef7a6e2bf3dabf23f851a2..43a985390bb6e528264b34562c33ba51705ba56b 100644 (file)
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -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

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 7aa40f8e182d569bcba8c0a3f33bb0f73b6f4950..824708cbfb7b88083ac16d591e09ff121b785bad 100644 (file)
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -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 },