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[tip/core/rcu,03/55] rcu: Update documentation to flag RCU_BOOST trace information

Message ID 1315332049-2604-3-git-send-email-paulmck@linux.vnet.ibm.com
State Accepted
Commit d5988af53102f3b73e5e0788be024ccfa51869de
Headers show

Commit Message

Paul E. McKenney Sept. 6, 2011, 5:59 p.m. UTC 
From: Paul E. McKenney <paul.mckenney@linaro.org>

Call out the RCU_TRACE information that is provided only in kernels
built with RCU_BOOST.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 Documentation/RCU/trace.txt |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
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Patch

diff --git a/Documentation/RCU/trace.txt b/Documentation/RCU/trace.txt
index 8173cec..a67af0a 100644
--- a/Documentation/RCU/trace.txt
+++ b/Documentation/RCU/trace.txt
@@ -184,10 +184,14 @@  o	"kt" is the per-CPU kernel-thread state.  The digit preceding
 	The number after the final slash is the CPU that the kthread
 	is actually running on.
 
+	This field is displayed only for CONFIG_RCU_BOOST kernels.
+
 o	"ktl" is the low-order 16 bits (in hexadecimal) of the count of
 	the number of times that this CPU's per-CPU kthread has gone
 	through its loop servicing invoke_rcu_cpu_kthread() requests.
 
+	This field is displayed only for CONFIG_RCU_BOOST kernels.
+
 o	"b" is the batch limit for this CPU.  If more than this number
 	of RCU callbacks is ready to invoke, then the remainder will
 	be deferred.