arch/arm64/kernel/proton-pack.c:353:1: sparse: sparse: symbol '__pcpu_scope_arm64_ssbd_callback_required' was not declared. Should it be static?

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   33cc938e65a98f1d29d0a18403dbbee050dcad9a
commit: 5c8b0cbd9d6bac5f40943b5a7d8eac8cb86cbe7f arm64: Pull in task_stack_page() to Spectre-v4 mitigation code
date:   3 years, 2 months ago
config: arm64-randconfig-r112-20231117 (https://download.01.org/0day-ci/archive/20231205/202312050240.7tqVfCLx-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231205/202312050240.7tqVfCLx-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/202312050240.7tqVfCLx-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/arm64/kernel/proton-pack.c:353:1: sparse: sparse: symbol '__pcpu_scope_arm64_ssbd_callback_required' was not declared. Should it be static?

vim +/__pcpu_scope_arm64_ssbd_callback_required +353 arch/arm64/kernel/proton-pack.c

c28762070ca651 Will Deacon 2020-09-18  351  
c28762070ca651 Will Deacon 2020-09-18  352  /* This is the per-cpu state tracking whether we need to talk to firmware */
c28762070ca651 Will Deacon 2020-09-18 @353  DEFINE_PER_CPU_READ_MOSTLY(u64, arm64_ssbd_callback_required);
c28762070ca651 Will Deacon 2020-09-18  354  

:::::: The code at line 353 was first introduced by commit
:::::: c28762070ca651fe7a981b8f31d972c9b7d2c386 arm64: Rewrite Spectre-v4 mitigation code

:::::: TO: Will Deacon <will@kernel.org>
:::::: CC: Will Deacon <will@kernel.org>

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