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From: NeilBrown <neilb@suse.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Fengguang Wu <fengguang.wu@intel.com>
Subject: [PATCH] block: export trace_block_unplug
Date: Tue, 25 Sep 2012 09:57:55 +1000	[thread overview]
Message-ID: <20120925095755.048903e8@notabene.brown> (raw)

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Hi Jens,
 is there any chance this can be in the next merge window?  I'm
adding block tracing to md and found I need another export.

Thanks,
NeilBrown


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>

diff --git a/block/blk-core.c b/block/blk-core.c
index 4b4dbdf..ef55ae0 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);
 

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             reply	other threads:[~2012-09-24 23:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-24 23:57 NeilBrown [this message]
2012-09-25 12:50 ` [PATCH] block: export trace_block_unplug Jens Axboe
2012-09-26  1:27   ` NeilBrown

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