[bcain:bcain/qemu_boot 24/66] arch/hexagon/kernel/hexagon_debug.c:5:5: sparse: sparse: symbol 'sample_u32' was not declared. Should it be static?

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/bcain/linux.git bcain/qemu_boot
head:   29facc8c3b3fe50f4914c90aec24a76217fa35c1
commit: 8be2af9ea122e286ca475227495296847336bb9d [24/66] hexagon: add debug infrastructure
config: hexagon-randconfig-r113-20260706 (https://download.01.org/0day-ci/archive/20260706/202607062224.avOJtkbw-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260706/202607062224.avOJtkbw-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607062224.avOJtkbw-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   arch/hexagon/kernel/hexagon_debug.c: note: in included file (through arch/hexagon/include/asm/timex.h, include/linux/timex.h, include/linux/time32.h, include/linux/time.h, ...):
   arch/hexagon/include/asm/hexagon_vm.h:51:5: sparse: sparse: undefined preprocessor identifier '__HEXAGON_ARCH__'
>> arch/hexagon/kernel/hexagon_debug.c:5:5: sparse: sparse: symbol 'sample_u32' was not declared. Should it be static?
>> arch/hexagon/kernel/hexagon_debug.c:8:5: sparse: sparse: symbol 'zebu_pmu_dump' was not declared. Should it be static?
>> arch/hexagon/kernel/hexagon_debug.c:9:5: sparse: sparse: symbol 'memory_debug' was not declared. Should it be static?

vim +/sample_u32 +5 arch/hexagon/kernel/hexagon_debug.c

     3	
     4	/*  Skeleton for stuffing stuff in debugfs  */
   > 5	u32 sample_u32;
     6	u32 kernel_strace;
     7	u32 sig_debug;
   > 8	u32 zebu_pmu_dump;
   > 9	u32 memory_debug;
    10	
    11	

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