kernel/time/hrtimer.c:276:20: warning: unused function 'is_migration_base'

kernel test robot
2021-12-22T10:17:42Z

head: 2f47a9a4dfa3674fad19a49b40c5103a9a8e1589
commit: 81d741d3460ca422843ce0ec8351083f259c6166 hrtimer: Avoid unnecessary SMP function calls in clock_was_set()
date: 4 months ago
config: mips-buildonly-randconfig-r003-20211222 (https://download.01.org/0day-ci/archive/20211222/202112221841.gfrIYr9j-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project de4e0195ae1c39f1c3b07834b8e32c113f4f20eb)
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=81d741d3460ca422843ce0ec8351083f259c6166
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 81d741d3460ca422843ce0ec8351083f259c6166
# save the config file 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 fs/ kernel/time/ sound/pci/hda/

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 >>):

kernel/time/hrtimer.c:120:21: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_REALTIME,
^~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:121:22: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_MONOTONIC,
^~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:122:21: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_BOOTTIME,
^~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:123:17: warning: initializer overrides prior initialization of this subobject
= HRTIMER_BASE_TAI,
^~~~~~~~~~~~~~~~
kernel/time/hrtimer.c:118:27: note: previous initialization is here
[0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES,
^~~~~~~~~~~~~~~~~~~~~~~
>> kernel/time/hrtimer.c:276:20: warning: unused function 'is_migration_base'
static inline bool is_migration_base(struct hrtimer_clock_base
^
>> kernel/time/hrtimer.c:1816:20: warning: unused function '__hrtimer_peek_ahead_timers'
static inline void __hrtimer_peek_ahead_timers(void)
^
fatal error: error in backend: Nested variants found in inline asm string: ' .set push
.set mips64r2
.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/bitops.h", .line = 105, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: ll $0, $1
or $0, $2
sc $0, $1
beqz $0, 1b
.set pop
'
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 de4e0195ae1c39f1c3b07834b8e32c113f4f20eb)
Target: mipsel-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-de4e0195ae/bin
clang-14: note: diagnostic msg:
Makefile arch drivers fs include kernel mm nr_bisected scripts sound source usr