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Message-Id: <1315332049-2604-3-git-send-email-paulmck@linux.vnet.ibm.com>
Date: Tue, 6 Sep 2011 10:59:57 -0700
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com,
patches@...aro.org, "Paul E. McKenney" <paul.mckenney@...aro.org>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 03/55] rcu: Update documentation to flag RCU_BOOST trace information
From: Paul E. McKenney <paul.mckenney@...aro.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@...aro.org>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
Documentation/RCU/trace.txt | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
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.
--
1.7.3.2
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