tree:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 4e78c578cb987725eef1cec7d11b6437109e9a49
commit: b9de06783f01100a2d2fb2864e6f2a802b7bc57f [2035/2472] compiler.h: fix
barrier_data() on clang
config: alpha-defconfig (attached as .config)
compiler: alpha-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/next/linux-next.git/commi...
git remote add linux-next
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout b9de06783f01100a2d2fb2864e6f2a802b7bc57f
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
In file included from arch/alpha/include/asm/barrier.h:21,
from arch/alpha/include/asm/atomic.h:6,
from include/linux/atomic.h:7,
from include/linux/dcache.h:5,
from fs/nfs/export.c:7:
arch/alpha/include/asm/atomic.h: In function 'atomic_add_return_relaxed':
> include/asm-generic/barrier.h:78:18: error: implicit declaration
of function 'barrier' [-Werror=implicit-function-declaration]
78 |
#define smp_mb() barrier()
| ^~~~~~~
arch/alpha/include/asm/atomic.h:72:2: note: in expansion of macro 'smp_mb'
72 | smp_mb(); \
| ^~~~~~
arch/alpha/include/asm/atomic.h:149:2: note: in expansion of macro
'ATOMIC_OP_RETURN'
149 | ATOMIC_OP_RETURN(op, op##l) \
| ^~~~~~~~~~~~~~~~
arch/alpha/include/asm/atomic.h:155:1: note: in expansion of macro
'ATOMIC_OPS'
155 | ATOMIC_OPS(add)
| ^~~~~~~~~~
cc1: some warnings being treated as errors
vim +/barrier +78 include/asm-generic/barrier.h
0890a264794f33d Linus Torvalds 2015-07-01 76
470c27e4695add2 Vineet Gupta 2015-03-11 77 #ifndef smp_mb
885df91ca3571af David Howells 2012-03-28 @78 #define smp_mb() barrier()
470c27e4695add2 Vineet Gupta 2015-03-11 79 #endif
470c27e4695add2 Vineet Gupta 2015-03-11 80
:::::: The code at line 78 was first introduced by commit
:::::: 885df91ca3571afd4b3f50f3391329bbf3c9e262 Create asm-generic/barrier.h
:::::: TO: David Howells <dhowells(a)redhat.com>
:::::: CC: David Howells <dhowells(a)redhat.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org