linux-kernel - [atishp04:kvm_perf_rfc 24/24] arch/riscv/include/asm/kvm_vcpu_pmu.h:62:60: warning: 'enum sbi_pmu_fw_generic_events_t' declared inside parameter list will not be visible outside of this definition or declaration

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Date:   Sat, 16 Jul 2022 14:49:20 +0800
From:   kernel test robot <lkp@...el.com>
To:     Atish Patra <atishp@...osinc.com>
Cc:     kbuild-all@...ts.01.org, Atish Patra <Atish.Patra@....com>,
        linux-kernel@...r.kernel.org
Subject: [atishp04:kvm_perf_rfc 24/24]
 arch/riscv/include/asm/kvm_vcpu_pmu.h:62:60: warning: 'enum
 sbi_pmu_fw_generic_events_t' declared inside parameter list will not be
 visible outside of this definition or declaration

tree:   https://github.com/atishp04/linux kvm_perf_rfc
head:   84a3fd7f92957f64c411595a9efcc2eed18db2be
commit: 84a3fd7f92957f64c411595a9efcc2eed18db2be [24/24] RISC-V: KVM: Implement firmware events
config: riscv-randconfig-r001-20220715 (https://download.01.org/0day-ci/archive/20220716/202207161431.vy05qNVI-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/atishp04/linux/commit/84a3fd7f92957f64c411595a9efcc2eed18db2be
        git remote add atishp04 https://github.com/atishp04/linux
        git fetch --no-tags atishp04 kvm_perf_rfc
        git checkout 84a3fd7f92957f64c411595a9efcc2eed18db2be
        # 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 prepare

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

All warnings (new ones prefixed by >>):

   In file included from arch/riscv/include/asm/kvm_host.h:21,
                    from arch/riscv/kernel/asm-offsets.c:12:
   arch/riscv/include/asm/kvm_vcpu_pmu.h:31:32: error: field 'cinfo' has incomplete type
      31 |         union sbi_pmu_ctr_info cinfo;
         |                                ^~~~~
   arch/riscv/include/asm/kvm_vcpu_pmu.h:38:28: error: 'RISCV_MAX_COUNTERS' undeclared here (not in a function)
      38 |         struct kvm_pmc pmc[RISCV_MAX_COUNTERS];
         |                            ^~~~~~~~~~~~~~~~~~
>> arch/riscv/include/asm/kvm_vcpu_pmu.h:62:60: warning: 'enum sbi_pmu_fw_generic_events_t' declared inside parameter list will not be visible outside of this definition or declaration
      62 | int kvm_riscv_vcpu_pmu_incr_fw(struct kvm_vcpu *vcpu, enum sbi_pmu_fw_generic_events_t fid);
         |                                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   make[2]: *** [scripts/Makefile.build:117: arch/riscv/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1200: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +62 arch/riscv/include/asm/kvm_vcpu_pmu.h

    61	
  > 62	int kvm_riscv_vcpu_pmu_incr_fw(struct kvm_vcpu *vcpu, enum sbi_pmu_fw_generic_events_t fid);
    63	int kvm_riscv_vcpu_pmu_read_hpm(struct kvm_vcpu *vcpu, unsigned int csr_num,
    64					unsigned long *val, unsigned long new_val,
    65					unsigned long wr_mask);
    66	

-- 
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https://01.org/lkp