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Subjectkernel/time/hrtimer.c:650:19: warning: unused function 'hrtimer_hres_active'
Hi Thomas,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 018ab4fabddd94f1c96f3b59e180691b9e88d5d8
commit: 9482fd71dbb8f0d1a61821a83e467dc0a9d7b429 hrtimer: Use raw_cpu_ptr() in clock_was_set()
date: 10 months ago
config: mips-randconfig-r022-20220615 (https://download.01.org/0day-ci/archive/20220615/202206151820.2UttbZpK-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b0b00432093be9680ed833af642bcafc3ca11586)
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-mips64el-linux-gnuabi64
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9482fd71dbb8f0d1a61821a83e467dc0a9d7b429
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 9482fd71dbb8f0d1a61821a83e467dc0a9d7b429
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/dma/dw-edma/ drivers/irqchip/ kernel/time/ mm/

If you fix the issue, kindly add following tag where applicable
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:650:19: warning: unused function 'hrtimer_hres_active'
static inline int hrtimer_hres_active(void)
^
kernel/time/hrtimer.c:1887:20: 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)) : $))) ) && ( (1 << 31) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif
1: lld $0, $1
or $0, $2
scd $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 b0b00432093be9680ed833af642bcafc3ca11586)
Target: mips64el-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-b0b0043209/bin
clang-15: note: diagnostic msg:
Makefile arch drivers include kernel mm nr_bisected scripts sound source usr


vim +/hrtimer_hres_active +650 kernel/time/hrtimer.c

28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 649
28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 @650 static inline int hrtimer_hres_active(void)
28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 651 {
28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 652 return __hrtimer_hres_active(this_cpu_ptr(&hrtimer_bases));
28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 653 }
28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 654

:::::: The code at line 650 was first introduced by commit
:::::: 28bfd18bf3daa5db8bb3422ea7138c8b7d2444ac hrtimer: Make the hrtimer_cpu_base::hres_active field unconditional, to simplify the code

:::::: TO: Anna-Maria Gleixner <anna-maria@linutronix.de>
:::::: CC: Ingo Molnar <mingo@kernel.org>

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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