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-rw-r--r--block/Kconfig12
1 files changed, 12 insertions, 0 deletions
diff --git a/block/Kconfig b/block/Kconfig
index 377f6dd20e1..96783645092 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -11,4 +11,16 @@ config LBD
your machine, or if you want to have a raid or loopback device
bigger than 2TB. Otherwise say N.
+config BLK_DEV_IO_TRACE
+ bool "Support for tracing block io actions"
+ select RELAY
+ select DEBUG_FS
+ help
+ Say Y here, if you want to be able to trace the block layer actions
+ on a given queue. Tracing allows you to see any traffic happening
+ on a block device queue. For more information (and the user space
+ support tools needed), fetch the blktrace app from:
+
+ git://brick.kernel.dk/data/git/blktrace.git
+
source block/Kconfig.iosched