Merge branches 'core/debugobjects', 'core/iommu', 'core/locking', 'core/printk',...

diff --cc kernel/softirq.c
Simple merge

diff --cc lib/Kconfig.debug
index 1e3fd3e,124ece1,b0f239e,b0f239e,b0f239e,465d822,b0f239e,b0f239e,b0f239e..eae594c
--- 1/lib/Kconfig.debug
--- 2/lib/Kconfig.debug
--- 3/lib/Kconfig.debug
--- 4/lib/Kconfig.debug
--- 5/lib/Kconfig.debug
--- 6/lib/Kconfig.debug
--- 7/lib/Kconfig.debug
--- 8/lib/Kconfig.debug
--- 9/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@@@@@@@@@ -544,17 -552,7 -544,7 -544,7 -544,7 -544,7 -544,7 -544,7 -544,7 +552,17 @@@@@@@@@@ config DEBUG_S
                  their sg tables.
         
                  If unsure, say N.
     +   
 ++++++++config DEBUG_NOTIFIERS
 ++++++++       bool "Debug notifier call chains"
 ++++++++       depends on DEBUG_KERNEL
 ++++++++       help
 ++++++++         Enable this to turn on sanity checking for notifier call chains.
 ++++++++         This is most useful for kernel developers to make sure that
 ++++++++         modules properly unregister themselves from notifier chains.
 ++++++++         This is a relatively cheap check but if you care about maximum
 ++++++++         performance, say N.
 ++++ +++
         config FRAME_POINTER
                bool "Compile the kernel with frame pointers"
                depends on DEBUG_KERNEL && \