commit cbae8d45d61f3a8c155caf267d01e5e0f0b2f4b7
author NeilBrown <neilb@suse.de> Fri Dec 14 20:49:27 2012 +0100
committer Jens Axboe <axboe@kernel.dk> Fri Dec 14 20:49:27 2012 +0100
tree bf5920d41e2f948ce92b9dbe8bf3919290000f4e
parent 0cfbcafcae8b7364b5fa96c2b26ccde7a3a296a9

block: export block_unplug tracepoint

This allows stacked devices (like md/raid5) to provide blktrace
tracing, including unplug events.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-core.c

diff --git a/block/blk-core.c b/block/blk-core.c
index 473015e..c973249 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -40,6 +40,7 @@
 EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_remap);
 EXPORT_TRACEPOINT_SYMBOL_GPL(block_rq_remap);
 EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_complete);
+EXPORT_TRACEPOINT_SYMBOL_GPL(block_unplug);
 
 DEFINE_IDA(blk_queue_ida);