tree: git://linux-arm.org/linux-de.git tip/sched/core_dl_fix_dl_cap_aw head: 5f50571676da5c98ea40e9eb008e85be2e2d177d commit: f23df27535d751f761ec7593b8d6311f8385b990 [4/5] sched/deadline: Make DL capacity-aware config: i386-tinyconfig (attached as .config) compiler: gcc-7 (Debian 7.5.0-3) 7.5.0 reproduce: git checkout f23df27535d751f761ec7593b8d6311f8385b990 # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from arch/x86/include/asm/current.h:5:0, from include/linux/sched.h:12, from kernel/sched/sched.h:5, from kernel/sched/deadline.c:18: kernel/sched/deadline.c: In function 'dl_task_fits_capacity': if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ #define static_branch_unlikely(x) unlikely(static_key_enabled(&(x)->key)) ^~~~~~~~~~~~~~~~~~ if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^~~~~~~~~~~~~~~~~~~~~~ kernel/sched/deadline.c:660:31: note: each undeclared identifier is reported only once for each function it appears in if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ #define static_branch_unlikely(x) unlikely(static_key_enabled(&(x)->key)) ^~~~~~~~~~~~~~~~~~ if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^~~~~~~~~~~~~~~~~~~~~~ -- In file included from arch/x86/include/asm/current.h:5:0, from include/linux/sched.h:12, from kernel//sched/sched.h:5, from kernel//sched/deadline.c:18: kernel//sched/deadline.c: In function 'dl_task_fits_capacity': kernel//sched/deadline.c:660:31: error: 'sched_asym_cpucapacity' undeclared (first use in this function); did you mean 'arch_scale_cpu_capacity'? if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ #define static_branch_unlikely(x) unlikely(static_key_enabled(&(x)->key)) ^~~~~~~~~~~~~~~~~~ kernel//sched/deadline.c:660:7: note: in expansion of macro 'static_branch_unlikely' if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^~~~~~~~~~~~~~~~~~~~~~ kernel//sched/deadline.c:660:31: note: each undeclared identifier is reported only once for each function it appears in if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ #define static_branch_unlikely(x) unlikely(static_key_enabled(&(x)->key)) ^~~~~~~~~~~~~~~~~~ kernel//sched/deadline.c:660:7: note: in expansion of macro 'static_branch_unlikely' if (!static_branch_unlikely(&sched_asym_cpucapacity)) ^~~~~~~~~~~~~~~~~~~~~~ vim +660 kernel/sched/deadline.c 642 643 /* 644 * Verify the fitness of task @p to run on @cpu taking into account the 645 * CPU original capacity and the runtime/deadline ratio of the task. 646 * 647 * This check is only important for heterogeneous systems where CPU 648 * original capacity can be less than SCHED_CAPACITY_SCALE. For 649 * non-heterogeneous system this function will always return true. 650 * 651 * The function will return true if the CPU original capacity of the 652 * @cpu scaled by SCHED_CAPACITY_SCALE >= runtime/deadline ratio of the 653 * task and false otherwise. 654 */ 655 static inline bool dl_task_fits_capacity(struct task_struct *p, int cpu) 656 { 657 u64 deadline, runtime; 658 unsigned long cap; 659 661 return true; 662 663 cap = arch_scale_cpu_capacity(cpu); 664 deadline = p->dl.dl_deadline; 665 runtime = p->dl.dl_runtime; 666 667 return cap_scale(deadline, cap) >= runtime; 668 } 669 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org