From: kernel test robot <lkp@intel.com>
To: Arvind Sankar <nivedita@alum.mit.edu>
Cc: kbuild-all@lists.01.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Randy Dunlap <rdunlap@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Kees Cook <keescook@chromium.org>
Subject: [linux-stable-rc:linux-4.19.y 2415/4517] arch/riscv/include/asm/processor.h:82:2: error: implicit declaration of function 'barrier'
Date: Mon, 31 May 2021 01:04:42 +0800 [thread overview]
Message-ID: <202105310136.75oxzHK9-lkp@intel.com> (raw)
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Hi Arvind,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y
head: f96d7c02c0d0a6180888c0241399373121777708
commit: b207caff4176e3a6ba273243da2db2e595e4aad2 [2415/4517] compiler.h: fix barrier_data() on clang
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=b207caff4176e3a6ba273243da2db2e595e4aad2
git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git fetch --no-tags linux-stable-rc linux-4.19.y
git checkout b207caff4176e3a6ba273243da2db2e595e4aad2
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from include/linux/prefetch.h:15,
from drivers/net/ethernet/intel/ice/ice_txrx.c:6:
arch/riscv/include/asm/processor.h: In function 'cpu_relax':
>> arch/riscv/include/asm/processor.h:82:2: error: implicit declaration of function 'barrier' [-Werror=implicit-function-declaration]
82 | barrier();
| ^~~~~~~
cc1: some warnings being treated as errors
vim +/barrier +82 arch/riscv/include/asm/processor.h
7db91e57a0acde Palmer Dabbelt 2017-07-10 73
7db91e57a0acde Palmer Dabbelt 2017-07-10 74
7db91e57a0acde Palmer Dabbelt 2017-07-10 75 static inline void cpu_relax(void)
7db91e57a0acde Palmer Dabbelt 2017-07-10 76 {
7db91e57a0acde Palmer Dabbelt 2017-07-10 77 #ifdef __riscv_muldiv
7db91e57a0acde Palmer Dabbelt 2017-07-10 78 int dummy;
7db91e57a0acde Palmer Dabbelt 2017-07-10 79 /* In lieu of a halt instruction, induce a long-latency stall. */
7db91e57a0acde Palmer Dabbelt 2017-07-10 80 __asm__ __volatile__ ("div %0, %0, zero" : "=r" (dummy));
7db91e57a0acde Palmer Dabbelt 2017-07-10 81 #endif
7db91e57a0acde Palmer Dabbelt 2017-07-10 @82 barrier();
7db91e57a0acde Palmer Dabbelt 2017-07-10 83 }
7db91e57a0acde Palmer Dabbelt 2017-07-10 84
:::::: The code at line 82 was first introduced by commit
:::::: 7db91e57a0acde126a162ababfb1e0ab190130cb RISC-V: Task implementation
:::::: TO: Palmer Dabbelt <palmer@dabbelt.com>
:::::: CC: Palmer Dabbelt <palmer@dabbelt.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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reply other threads:[~2021-05-30 17:05 UTC|newest]
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