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[Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>]

RCU kernel config log from running TC2 board. with 13.03 kernel.

root@android:/ # uname -a                                                       
Linux localhost 3.9.0-rc3-00212-g0f66281 #1 SMP Sat Mar 23 15:15:15 UTC 2013 arm
v7l GNU/Linux                                                                   
root@android:/ # zcat  /proc/config.gz | grep RCU                               
# RCU Subsystem                                                                 
CONFIG_TREE_RCU=y                                                               
# CONFIG_PREEMPT_RCU is not set                                                 
CONFIG_RCU_STALL_COMMON=y                                                       
CONFIG_RCU_FANOUT=32                                                            
CONFIG_RCU_FANOUT_LEAF=16                                                       
# CONFIG_RCU_FANOUT_EXACT is not set                                            
# CONFIG_RCU_FAST_NO_HZ is not set                                              
# CONFIG_TREE_RCU_TRACE is not set                                              
# CONFIG_RCU_NOCB_CPU is not set                                                
# RCU Debugging                                                                 
# CONFIG_SPARSE_RCU_POINTER is not set                                          
# CONFIG_RCU_TORTURE_TEST is not set                                            
CONFIG_RCU_CPU_STALL_TIMEOUT=21                                                 
# CONFIG_RCU_CPU_STALL_INFO is not set                                          
# CONFIG_RCU_TRACE is not set                                                   
root@android:/ #

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Kernel.
https://bugs.launchpad.net/bugs/1102347

Title:
  exynos : rcu stall with 3.8-rc2

Status in Kernel related development for Power Management Working Group:
  Confirmed

Bug description:
  When offlining / onlining cpu1 several times, the kernel hangs with a
  rcu stall.

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