Note that at this point there is no CONFIG_RAMSTER_DEBUG option in the Kconfig. So in effect all of the counters are nop until that option gets introduced in patch: ramster/debug: Add CONFIG_RAMSTER_DEBUG Kconfig entry Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com> Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>