[PATCH -rt] hwlat_detector: add dependence of RING_BUFFER

[Wu Zhangjin]

From: Wu Zhangjin <wuzj@xxxxxxxxxx>

driver/misc/hwlat_detector.c needs the ring_buffer_* functions, which
are defined in kernel/trace/ring_buffer.c, so, hwlat_detector is
dependent on RING_BUFFER.

Signed-off-by: Wu Zhangjin <wuzj@xxxxxxxxxx>
---
 drivers/misc/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 174b99e..557cbb1 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -78,7 +78,7 @@ config IBM_ASM
 
 config HWLAT_DETECTOR
 	tristate "Testing module to detect hardware-induced latencies"
-	depends on DEBUG_FS
+	depends on DEBUG_FS && RING_BUFFER
 	default m
 	---help---
 	  A simple hardware latency detector. Use this module to detect
-- 
1.6.0.4

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