lkml.org 
[lkml]   [2021]   [Nov]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectmm/mremap.c:215:20: warning: unused function 'arch_supports_page_table_move'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: b5013d084e03e82ceeab4db8ae8ceeaebe76b0eb
commit: 3bbda69c48d27474a9e6a90cf4680b295a7efa46 mm/mremap: allow arch runtime override
date: 4 months ago
config: mips-randconfig-c004-20211014 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6c76d0101193aa4eb891a6954ff047eda2f9cf71)
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
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3bbda69c48d27474a9e6a90cf4680b295a7efa46
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 3bbda69c48d27474a9e6a90cf4680b295a7efa46
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> mm/mremap.c:215:20: warning: unused function 'arch_supports_page_table_move'
static inline bool arch_supports_page_table_move(void)
^
mm/mremap.c:214:39: note: expanded from macro 'arch_supports_page_table_move'
#define arch_supports_page_table_move arch_supports_page_table_move
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set noat
.set push
.set arch=r4000
.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/cmpxchg.h", .line = 163, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: ll $0, $2 # __cmpxchg_asm
bne $0, ${3:z}, 2f
.set pop
move $$1, ${4:z}
.set arch=r4000
sc $$1, $1
beqz $$1, 1b
.set pop
2: .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/cmpxchg.h", .line = 163, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project cefc01fa65a7ebcc10cbf3c3bb2278a6a122deaf)
Target: mips-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-cefc01fa65/bin
clang-14: note: diagnostic msg:
Makefile arch block certs crypto drivers fs include init ipc kernel lib mm nr_bisected scripts security sound source usr virt


vim +/arch_supports_page_table_move +215 mm/mremap.c

212
213 #ifndef arch_supports_page_table_move
214 #define arch_supports_page_table_move arch_supports_page_table_move
> 215 static inline bool arch_supports_page_table_move(void)
216 {
217 return IS_ENABLED(CONFIG_HAVE_MOVE_PMD) ||
218 IS_ENABLED(CONFIG_HAVE_MOVE_PUD);
219 }
220 #endif
221

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[unhandled content-type:application/gzip]
\
 
 \ /
  Last update: 2021-11-07 19:08    [W:0.031 / U:0.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site