Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

Pull x86 stackdump update from Ingo Molnar:
 "A number of stackdump enhancements"

* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/dumpstack: Add show_stack_regs() and use it
  printk: Make the printk*once() variants return a value
  x86/dumpstack: Honor supplied @regs arg

diff --cc arch/x86/kernel/dumpstack.c
Simple merge

diff --cc arch/x86/kernel/dumpstack_64.c
Simple merge

diff --cc arch/x86/mm/extable.c
Simple merge