[PATCH] rcu: Reword help of RCU_TRACE option

[Nikolay Borisov <kernel@kyup.com>]

Explicitly state that enabling RCU_TRACE enables more
tracepoints and not just "additional tracing".

Signed-off-by: Nikolay Borisov <kernel@kyup.com>
---

Hello Paul, 

Following our latest conversation re. enabling RCU tracing
I had to actually go and look into the code to see which 
option enables the additional tracepoints. I wasn't sure
while reading the help of TRACE_RCU. So here is a patch
which explicitly states that this enables additional 
tracepoints. 

Apply it if you deem necessary it might be just me that 
thinks the description is not verbose enough. 

 lib/Kconfig.debug | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index cab7405f48d2..f8c3468ec7ef 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1429,8 +1429,8 @@ config RCU_TRACE
 	depends on DEBUG_KERNEL
 	select TRACE_CLOCK
 	help
-	  This option provides tracing in RCU which presents stats
-	  in debugfs for debugging RCU implementation.
+	  This option enables additional tracepoints in RCU which present
+	  stats in debugfs for debugging RCU implementation.
 
 	  Say Y here if you want to enable RCU tracing
 	  Say N if you are unsure.
-- 
2.5.0