tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/migrate-disable head: c777d847107e80df24dae87fc9cf4b4c0bf4dfed commit: a7c81556ec4d341dfdbf2cc478ead89d73e474a7 [15/18] sched: Fix migrate_disable() vs rt/dl balancing config: mips-randconfig-r016-20201123 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c8c3a411c50f541ce5362bd60ee3f8fe43ac2722) 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/tip/tip.git/commit/?id=a7c81556ec4d341dfdbf2cc478ead89d73e474a7 git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git git fetch --no-tags tip sched/migrate-disable git checkout a7c81556ec4d341dfdbf2cc478ead89d73e474a7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> All warnings (new ones prefixed by >>): kernel/sched/core.c:2711:6: warning: no previous prototype for function 'sched_set_stop_task' void sched_set_stop_task(int cpu, struct task_struct ^ kernel/sched/core.c:2711:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void sched_set_stop_task(int cpu, struct task_struct ^ static >> kernel/sched/core.c:2771:20: warning: unused function 'rq_has_pinned_tasks' static inline bool rq_has_pinned_tasks(struct rq ^ kernel/sched/core.c:4559:20: warning: unused function 'sched_tick_stop' static inline void sched_tick_stop(int cpu) { } ^ >> kernel/sched/core.c:7224:20: warning: unused function 'balance_hotplug_wait' static inline void balance_hotplug_wait(void) ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set noat .set push .set arch=r4000 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( 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-12: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 12.0.0 (git://gitmirror/llvm_project c8c3a411c50f541ce5362bd60ee3f8fe43ac2722) Target: mips-unknown-linux-gnu Thread model: posix InstalledDir: /opt/cross/clang-c8c3a411c5/bin clang-12: note: diagnostic msg: Makefile arch include kernel scripts source usr vim +/rq_has_pinned_tasks +2771 kernel/sched/core.c af449901b84c98c Peter Zijlstra 2020-09-17 2770 3015ef4b98f53fe Thomas Gleixner 2020-08-26 @2771 static inline bool rq_has_pinned_tasks(struct rq *rq) 3015ef4b98f53fe Thomas Gleixner 2020-08-26 2772 { 3015ef4b98f53fe Thomas Gleixner 2020-08-26 2773 return false; 3015ef4b98f53fe Thomas Gleixner 2020-08-26 2774 } 3015ef4b98f53fe Thomas Gleixner 2020-08-26 2775 :::::: The code at line 2771 was first introduced by commit :::::: 3015ef4b98f53fe7eba4f5f82f562c0e074d213c sched/core: Make migrate disable and CPU hotplug cooperative :::::: TO: Thomas Gleixner <[email protected]> :::::: CC: Peter Zijlstra <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
