[kbuild-all] [peterz-queue:sched/core 6/8] kernel/sched/sched.h:727:9: note: in expansion of macro 'scale_load_down'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/core head: 3124fc8676c43f13e7b133644c8a918e7d5dbf0f commit: d8ad4c3c8c3417d895aeaf05cb11d3b817e813c5 [6/8] sched: avoid scale real weight down to zero config: parisc-generic-64bit_defconfig (attached as .config) compiler: hppa64-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout d8ad4c3c8c3417d895aeaf05cb11d3b817e813c5 # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from arch/parisc/include/asm/bug.h:5, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/current.h:5, from ./arch/parisc/include/generated/asm/current.h:1, from include/linux/sched.h:12, from kernel/sched/sched.h:5, from kernel/sched/core.c:9: kernel/sched/sched.h: In function 'se_weight': kernel/sched/sched.h:125:13: error: 'MIN_SHARES' undeclared (first use in this function) 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ kernel/sched/sched.h:125:13: note: each undeclared identifier is reported only once for each function it appears in 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ include/linux/kernel.h:859:2: error: first argument to '__builtin_choose_expr' not a constant 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ -- In file included from arch/parisc/include/asm/bug.h:5, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/current.h:5, from ./arch/parisc/include/generated/asm/current.h:1, from include/linux/sched.h:12, from kernel/sched/sched.h:5, from kernel/sched/fair.c:23: kernel/sched/sched.h: In function 'se_weight': kernel/sched/sched.h:125:13: error: 'MIN_SHARES' undeclared (first use in this function) 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ kernel/sched/sched.h:125:13: note: each undeclared identifier is reported only once for each function it appears in 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ include/linux/kernel.h:859:2: error: first argument to '__builtin_choose_expr' not a constant 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ kernel/sched/fair.c: In function '__update_inv_weight': kernel/sched/sched.h:125:13: error: 'MIN_SHARES' undeclared (first use in this function) 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ kernel/sched/fair.c:209:6: note: in expansion of macro 'scale_load_down' 209 | w = scale_load_down(lw->weight); | ^~~~~~~~~~~~~~~ include/linux/kernel.h:859:2: error: first argument to '__builtin_choose_expr' not a constant 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ kernel/sched/fair.c:209:6: note: in expansion of macro 'scale_load_down' 209 | w = scale_load_down(lw->weight); | ^~~~~~~~~~~~~~~ kernel/sched/fair.c: In function '__calc_delta': kernel/sched/sched.h:125:13: error: 'MIN_SHARES' undeclared (first use in this function) 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ kernel/sched/fair.c:233:13: note: in expansion of macro 'scale_load_down' 233 | u64 fact = scale_load_down(weight); | ^~~~~~~~~~~~~~~ include/linux/kernel.h:859:2: error: first argument to '__builtin_choose_expr' not a constant 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ kernel/sched/fair.c:233:13: note: in expansion of macro 'scale_load_down' 233 | u64 fact = scale_load_down(weight); | ^~~~~~~~~~~~~~~ In file included from arch/parisc/include/asm/bug.h:5, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/current.h:5, from ./arch/parisc/include/generated/asm/current.h:1, from include/linux/sched.h:12, from kernel/sched/sched.h:5, from kernel/sched/fair.c:23: kernel/sched/fair.c: In function 'init_entity_runnable_average': kernel/sched/sched.h:125:13: error: 'MIN_SHARES' undeclared (first use in this function) 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ kernel/sched/fair.c:757:18: note: in expansion of macro 'scale_load_down' 757 | sa->load_avg = scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ include/linux/kernel.h:859:2: error: first argument to '__builtin_choose_expr' not a constant 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ -- In file included from arch/parisc/include/asm/bug.h:5, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/current.h:5, from ./arch/parisc/include/generated/asm/current.h:1, from include/linux/sched.h:12, from kernel/sched/pelt.c:27: kernel/sched/sched.h: In function 'se_weight': kernel/sched/sched.h:125:13: error: 'MIN_SHARES' undeclared (first use in this function) 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ kernel/sched/sched.h:125:13: note: each undeclared identifier is reported only once for each function it appears in 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ include/linux/kernel.h:859:2: error: first argument to '__builtin_choose_expr' not a constant 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 727 | return scale_load_down(se->load.weight); | ^~~~~~~~~~~~~~~ In file included from arch/parisc/include/asm/bug.h:5, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/current.h:5, from ./arch/parisc/include/generated/asm/current.h:1, from include/linux/sched.h:12, from kernel/sched/pelt.c:27: kernel/sched/pelt.c: In function '__update_load_avg_cfs_rq': kernel/sched/sched.h:125:13: error: 'MIN_SHARES' undeclared (first use in this function) 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~~~~~~~~ include/linux/kernel.h:835:22: note: in definition of macro '__typecheck' 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | ^ include/linux/kernel.h:859:24: note: in expansion of macro '__safe_cmp' 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 307 | scale_load_down(cfs_rq->load.weight), | ^~~~~~~~~~~~~~~ include/linux/kernel.h:859:2: error: first argument to '__builtin_choose_expr' not a constant 859 | __builtin_choose_expr(__safe_cmp(x, y), \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/kernel.h:875:19: note: in expansion of macro '__careful_cmp' 875 | #define max(x, y) __careful_cmp(x, y, >) | ^~~~~~~~~~~~~ kernel/sched/sched.h:125:9: note: in expansion of macro 'max' 125 | __w = max(MIN_SHARES, __w >> SCHED_FIXEDPOINT_SHIFT); \ | ^~~ 307 | scale_load_down(cfs_rq->load.weight), | ^~~~~~~~~~~~~~~ vim +/scale_load_down +727 kernel/sched/sched.h c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 720 029632fbb7b7c9 kernel/sched.h Peter Zijlstra 2011-10-25 721 #ifdef CONFIG_SMP c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 722 /* c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 723 * XXX we want to get rid of these helpers and use the full load resolution. c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 724 */ c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 725 static inline long se_weight(struct sched_entity *se) c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 726 { c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 @727 return scale_load_down(se->load.weight); c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 728 } c079629862b20c kernel/sched/sched.h Vincent Guittot 2018-06-28 729 :::::: The code at line 727 was first introduced by commit :::::: c079629862b20c101e8336362a8b042ec7d942fe sched/pelt: Move PELT related code in a dedicated file :::::: TO: Vincent Guittot <vincent.guittot(a)linaro.org&gt; :::::: CC: Ingo Molnar <mingo(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org