Messages in this thread | | | Date | Fri, 3 Sep 2021 02:21:05 +0800 | From | kernel test robot <> | Subject | kernel/sched/core.c:5854:20: warning: unused function 'sched_core_cpu_deactivate' |
| |
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4a3bb4200a5958d76cc26ebe4db4257efa56812b commit: 3c474b3239f12fe0b00d7e82481f36a1f31e79ab sched: Fix Core-wide rq->lock for uninitialized CPUs date: 13 days ago config: mips-randconfig-r004-20210902 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c9948e9254fbb6ea00f66c7b4542311d21e060be) 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=3c474b3239f12fe0b00d7e82481f36a1f31e79ab git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 3c474b3239f12fe0b00d7e82481f36a1f31e79ab # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=mips SHELL=/bin/bash kernel/sched/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
kernel/sched/core.c:3272:20: warning: unused function 'rq_has_pinned_tasks' static inline bool rq_has_pinned_tasks(struct rq ^ kernel/sched/core.c:5123:20: warning: unused function 'sched_tick_start' static inline void sched_tick_start(int cpu) { } ^ kernel/sched/core.c:5124:20: warning: unused function 'sched_tick_stop' static inline void sched_tick_stop(int cpu) { } ^ kernel/sched/core.c:5853:20: warning: unused function 'sched_core_cpu_starting' static inline void sched_core_cpu_starting(unsigned int cpu) {} ^ >> kernel/sched/core.c:5854:20: warning: unused function 'sched_core_cpu_deactivate' static inline void sched_core_cpu_deactivate(unsigned int cpu) {} ^ >> kernel/sched/core.c:5855:20: warning: unused function 'sched_core_cpu_dying' static inline void sched_core_cpu_dying(unsigned int cpu) {} ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set noat .set push .set arch=r4000 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( 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 c9948e9254fbb6ea00f66c7b4542311d21e060be) Target: mipsel-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-c9948e9254/bin clang-14: note: diagnostic msg: Makefile arch include kernel mm nr_bisected scripts source usr
vim +/sched_core_cpu_deactivate +5854 kernel/sched/core.c
5852 5853 static inline void sched_core_cpu_starting(unsigned int cpu) {} > 5854 static inline void sched_core_cpu_deactivate(unsigned int cpu) {} > 5855 static inline void sched_core_cpu_dying(unsigned int cpu) {} 5856
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org [unhandled content-type:application/gzip] | |