[PATCH 3/3] riscv: Support HAVE_SOFTIRQ_ON_OWN_STACK

[kernel test robot]

Hi,

I love your patch! Perhaps something to improve:

[auto build test WARNING on soc/for-next]
[also build test WARNING on linus/master v6.0-rc3 next-20220901]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/guoren-kernel-org/riscv-Add-GENERIC_ENTRY-IRQ_STACKS-support/20220904-003954
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20220904/202209040118.GmG1Lby1-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/6ed1ef93b372116f7d4586b13bfd352e19453740
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review guoren-kernel-org/riscv-Add-GENERIC_ENTRY-IRQ_STACKS-support/20220904-003954
        git checkout 6ed1ef93b372116f7d4586b13bfd352e19453740
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

>> arch/riscv/kernel/irq.c:48:6: warning: no previous prototype for 'do_softirq_own_stack' [-Wmissing-prototypes]
      48 | void do_softirq_own_stack(void)
         |      ^~~~~~~~~~~~~~~~~~~~
   arch/riscv/kernel/irq.c:74:25: warning: no previous prototype for 'handle_riscv_irq' [-Wmissing-prototypes]
      74 | asmlinkage void noinstr handle_riscv_irq(struct pt_regs *regs)
         |                         ^~~~~~~~~~~~~~~~
   arch/riscv/kernel/irq.c:85:25: warning: no previous prototype for 'do_riscv_irq' [-Wmissing-prototypes]
      85 | asmlinkage void noinstr do_riscv_irq(struct pt_regs *regs)
         |                         ^~~~~~~~~~~~


vim +/do_softirq_own_stack +48 arch/riscv/kernel/irq.c

    47	
  > 48	void do_softirq_own_stack(void)
    49	{
    50		ulong *sp = per_cpu(irq_stack_ptr, smp_processor_id());
    51	
    52		call_on_stack(NULL, sp, do_riscv_softirq, 0);
    53	}
    54	#endif /* CONFIG_PREEMPT_RT */
    55	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp