From patchwork Fri Sep 21 17:51:16 2012
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Date: Fri, 21 Sep 2012 17:51:16 +0000 (UTC)
From: Paul Walmsley <paul@pwsan.com>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
cc: "Bruce, Becky" <bbruce@ti.com>,
	"Paul E. McKenney" <paul.mckenney@linaro.org>,
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Subject: Re: rcu self-detected stall messages on OMAP3, 4 boards
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On Fri, 21 Sep 2012, Paul Walmsley wrote:

> The config used was 'omap2plus_defconfig', and enabled CONFIG_CPU_IDLE 
> by hand. 

One other thing I forgot to mention - CONFIG_RCU_CPU_STALL_INFO was 
enabled by hand also.  Below is the diff between omap2plus_defconfig and 
the config that was used here.


- Paul
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--- .config	2012-09-21 11:50:19.565972113 -0600
+++ .testconfig	2012-09-21 11:50:12.233946950 -0600
@@ -536,7 +536,9 @@
 # CPU Frequency scaling
 #
 # CONFIG_CPU_FREQ is not set
-# CONFIG_CPU_IDLE is not set
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
 CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED=y
 
 #
@@ -2535,7 +2537,7 @@
 # CONFIG_BOOT_PRINTK_DELAY is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 CONFIG_RCU_CPU_STALL_TIMEOUT=60
-# CONFIG_RCU_CPU_STALL_INFO is not set
+CONFIG_RCU_CPU_STALL_INFO=y
 # CONFIG_RCU_TRACE is not set
 # CONFIG_KPROBES_SANITY_TEST is not set
 # CONFIG_BACKTRACE_SELF_TEST is not set