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Commita9af76a787("watchdog: add sys_info sysctls to dump sys info on system lockup") adds 'hardlock_sys_info' systcl knob for general kernel watchdog to control what kinds of system debug info to be dumped on hardlockup. Add similar support in powerpc watchdog code to make the sysctl knob more general, which also fixes a compiling warning in general watchdog code reported by 0day bot. Link: https://lkml.kernel.org/r/20251231080309.39642-1-feng.tang@linux.alibaba.com Fixes:a9af76a787("watchdog: add sys_info sysctls to dump sys info on system lockup") Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202512030920.NFKtekA7-lkp@intel.com/ Suggested-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>