From: NeilBrown <neilb@suse.de>
Date: Fri, 14 Dec 2012 19:49:27 +0000 (+0100)
Subject: block: export block_unplug tracepoint
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cbae8d45d61f3a8c155caf267d01e5e0f0b2f4b7;p=openwrt%2Fstaging%2Fblogic.git

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>
---

diff --git a/block/blk-core.c b/block/blk-core.c
index 473015ee28a2..c973249d68cd 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);