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

kernel test robot
2022-03-21T19:30:32Z

head: f443e374ae131c168a065ea1748feac6b2e76613
commit: 81d741d3460ca422843ce0ec8351083f259c6166 hrtimer: Avoid unnecessary SMP function calls in clock_was_set()
date: 7 months ago
config: mips-randconfig-r022-20220319 (https://download.01.org/0day-ci/archive/20220322/202203220318.lF1LF4vW-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 217f267efe3082438e698e2f08566b9df8c530fa)
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 drivers/iommu/ fs/ kernel/time/

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:1830:20: 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-15: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 15.0.0 (git://gitmirror/llvm_project 85e9b2687a13d1908aa86d1b89c5ce398a06cd39)
Target: mipsel-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-85e9b2687a/bin
clang-15: note: diagnostic msg:
Makefile arch block certs crypto drivers fs include init ipc kernel lib mm scripts security sound source usr virt