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Date:   Wed, 26 Jul 2023 09:08:36 +0800
From:   kernel test robot <lkp@intel.com>
To:     Anders Roxell <anders.roxell@linaro.org>
Cc:     llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
        linux-kernel@vger.kernel.org,
        Michael Ellerman <mpe@ellerman.id.au>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Nathan Chancellor <nathan@kernel.org>
Subject: arch/powerpc/mm/book3s64/radix_tlb.c:419:20: error: unused function
 '_tlbie_pid_lpid'
Message-ID: <202307260802.Mjr99P5O-lkp@intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
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Precedence: bulk

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   18b44bc5a67275641fb26f2c54ba7eef80ac5950
commit: d78c8e32890ef7eca79ffd67c96022c7f9d8cce4 powerpc/mm: Rearrange if-else block to avoid clang warning
date:   5 months ago
config: powerpc-skiroot_defconfig (https://download.01.org/0day-ci/archive/20230726/202307260802.Mjr99P5O-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230726/202307260802.Mjr99P5O-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/202307260802.Mjr99P5O-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/powerpc/mm/book3s64/radix_tlb.c:419:20: error: unused function '_tlbie_pid_lpid' [-Werror,-Wunused-function]
     419 | static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
         |                    ^
>> arch/powerpc/mm/book3s64/radix_tlb.c:663:20: error: unused function '_tlbie_va_range_lpid' [-Werror,-Wunused-function]
     663 | static inline void _tlbie_va_range_lpid(unsigned long start, unsigned long end,
         |                    ^
   2 errors generated.


vim +/_tlbie_pid_lpid +419 arch/powerpc/mm/book3s64/radix_tlb.c

1a472c9dba6b96 arch/powerpc/mm/tlb-radix.c          Aneesh Kumar K.V 2016-04-29  418  
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21 @419  static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  420  				   unsigned long ric)
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  421  {
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  422  	asm volatile("ptesync" : : : "memory");
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  423  
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  424  	/*
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  425  	 * Workaround the fact that the "ric" argument to __tlbie_pid
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  426  	 * must be a compile-time contraint to match the "i" constraint
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  427  	 * in the asm statement.
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  428  	 */
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  429  	switch (ric) {
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  430  	case RIC_FLUSH_TLB:
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  431  		__tlbie_pid_lpid(pid, lpid, RIC_FLUSH_TLB);
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  432  		fixup_tlbie_pid_lpid(pid, lpid);
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  433  		break;
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  434  	case RIC_FLUSH_PWC:
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  435  		__tlbie_pid_lpid(pid, lpid, RIC_FLUSH_PWC);
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  436  		break;
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  437  	case RIC_FLUSH_ALL:
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  438  	default:
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  439  		__tlbie_pid_lpid(pid, lpid, RIC_FLUSH_ALL);
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  440  		fixup_tlbie_pid_lpid(pid, lpid);
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  441  	}
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  442  	asm volatile("eieio; tlbsync; ptesync" : : : "memory");
f0c6fbbb90504f arch/powerpc/mm/book3s64/radix_tlb.c Bharata B Rao    2021-06-21  443  }
2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin  2019-09-03  444  struct tlbiel_pid {
2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin  2019-09-03  445  	unsigned long pid;
2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin  2019-09-03  446  	unsigned long ric;
2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin  2019-09-03  447  };
2275d7b5754a57 arch/powerpc/mm/book3s64/radix_tlb.c Nicholas Piggin  2019-09-03  448  

:::::: The code at line 419 was first introduced by commit
:::::: f0c6fbbb90504fb7e9dbf0865463d3c2b4de49e5 KVM: PPC: Book3S HV: Add support for H_RPT_INVALIDATE

:::::: TO: Bharata B Rao <bharata@linux.ibm.com>
:::::: CC: Michael Ellerman <mpe@ellerman.id.au>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki