Re: [PATCH] Adds a new ioctl32 syscall for backwards compatibility layers

[kernel test robot <lkp@intel.com>]

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Hi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.11-rc2]
[cannot apply to arm64/for-next/core asm-generic/master soc/for-next next-20210104]
[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]

url:    https://github.com/0day-ci/linux/commits/sonicadvance1-gmail-com/Adds-a-new-ioctl32-syscall-for-backwards-compatibility-layers/20210106-145354
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62
config: arc-randconfig-r005-20210106 (attached as .config)
compiler: arc-elf-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/a927032b3a499474d8484f47644aa9a2578a5196
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review sonicadvance1-gmail-com/Adds-a-new-ioctl32-syscall-for-backwards-compatibility-layers/20210106-145354
        git checkout a927032b3a499474d8484f47644aa9a2578a5196
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from kernel/events/core.c:34:
>> include/linux/syscalls.h:390:5: error: unknown type name 'compat_ulong_t'
     390 |     compat_ulong_t arg);
         |     ^~~~~~~~~~~~~~
   kernel/events/core.c:6535:6: warning: no previous prototype for 'perf_pmu_snapshot_aux' [-Wmissing-prototypes]
    6535 | long perf_pmu_snapshot_aux(struct perf_buffer *rb,
         |      ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/perf_event.h:25,
                    from include/linux/trace_events.h:10,
                    from include/trace/syscall.h:7,
                    from include/linux/syscalls.h:84,
                    from kernel/events/core.c:34:
   arch/arc/include/asm/perf_event.h:126:23: warning: 'arc_pmu_cache_map' defined but not used [-Wunused-const-variable=]
     126 | static const unsigned arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
         |                       ^~~~~~~~~~~~~~~~~
   arch/arc/include/asm/perf_event.h:91:27: warning: 'arc_pmu_ev_hw_map' defined but not used [-Wunused-const-variable=]
      91 | static const char * const arc_pmu_ev_hw_map[] = {
         |                           ^~~~~~~~~~~~~~~~~


vim +/compat_ulong_t +390 include/linux/syscalls.h

   385	
   386	/* fs/ioctl.c */
   387	asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
   388					unsigned long arg);
   389	asmlinkage long sys_ioctl32(unsigned int fd, unsigned int cmd,
 > 390					compat_ulong_t arg);
   391	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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