[rafael-pm:intel_pstate-testing 13/14] arch/x86/kernel/smpboot.c:129:1: sparse: sparse: symbol '__pcpu_scope_arch_cpu_scale' was not declared. Should it be static?

kernel test robot
2024-03-29T14:14:54Z

tree: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git intel_pstate-testing
head: 9e188470f00d32c31b5be6f701ed94e6cce3a195
commit: fbc05ec06cbf10eb71658eb41582c0df7098b95b [13/14] x86/sched: Add basic support for CPU capacity scaling
config: i386-randconfig-061-20240329 (https://download.01.org/0day-ci/archive/20240329/202403292251.KAvVZtwd-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240329/202403292251.KAvVZtwd-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/202403292251.KAvVZtwd-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/x86/kernel/smpboot.c:129:1: sparse: sparse: symbol '__pcpu_scope_arch_cpu_scale' was not declared. Should it be static?
arch/x86/kernel/smpboot.c: note: in included file (through include/linux/mmzone.h, include/linux/topology.h, include/linux/sched/topology.h, ...):
include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false
include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false
arch/x86/kernel/smpboot.c: note: in included file (through arch/x86/include/asm/mmu_context.h, include/linux/mmu_context.h, include/linux/cpuset.h):
arch/x86/include/asm/desc.h:54:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct gdt_page * @@
arch/x86/include/asm/desc.h:54:16: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/x86/include/asm/desc.h:54:16: sparse: got struct gdt_page *

vim +/__pcpu_scope_arch_cpu_scale +129 arch/x86/kernel/smpboot.c

127
128 /* CPU capacity scaling support */
> 129 DEFINE_PER_CPU(unsigned long, arch_cpu_scale) = SCHED_CAPACITY_SCALE;
130

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