Hi Daniel, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on tip/perf/core] [also build test WARNING on linux/master linus/master v5.12-rc6] [cannot apply to trace/for-next next-20210408] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Daniel-Bristot-de-Oliveira/hwlat-improvements-and-osnoise-tracer/20210408-221655 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git cface0326a6c2ae5c8f47bd466f07624b3e348a7 config: openrisc-randconfig-r013-20210408 (attached as .config) compiler: or1k-linux-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/4e2f5d30c69f77756e8cf223acf55c2aa2657393 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Daniel-Bristot-de-Oliveira/hwlat-improvements-and-osnoise-tracer/20210408-221655 git checkout 4e2f5d30c69f77756e8cf223acf55c2aa2657393 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> kernel/trace/trace_hwlat.c:122:28: warning: no previous prototype for 'get_cpu_data' [-Wmissing-prototypes] 122 | struct hwlat_kthread_data *get_cpu_data(void) | ^~~~~~~~~~~~ In file included from include/linux/err.h:5, from include/linux/kthread.h:5, from kernel/trace/trace_hwlat.c:40: kernel/trace/trace_hwlat.c: In function 'start_per_cpu_kthreads': kernel/trace/trace_hwlat.c:496:25: error: passing argument 1 of 'alloc_cpumask_var' from incompatible pointer type [-Werror=incompatible-pointer-types] 496 | if (!alloc_cpumask_var(&this_cpumask, GFP_KERNEL)) | ^~~~~~~~~~~~~ | | | struct cpumask ** include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ kernel/trace/trace_hwlat.c:496:2: note: in expansion of macro 'if' 496 | if (!alloc_cpumask_var(&this_cpumask, GFP_KERNEL)) | ^~ In file included from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/kthread.h:6, from kernel/trace/trace_hwlat.c:40: include/linux/cpumask.h:767:53: note: expected 'struct cpumask (*)[1]' but argument is of type 'struct cpumask **' 767 | static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) | ~~~~~~~~~~~~~~~^~~~ In file included from include/linux/err.h:5, from include/linux/kthread.h:5, from kernel/trace/trace_hwlat.c:40: kernel/trace/trace_hwlat.c:496:25: error: passing argument 1 of 'alloc_cpumask_var' from incompatible pointer type [-Werror=incompatible-pointer-types] 496 | if (!alloc_cpumask_var(&this_cpumask, GFP_KERNEL)) | ^~~~~~~~~~~~~ | | | struct cpumask ** include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ kernel/trace/trace_hwlat.c:496:2: note: in expansion of macro 'if' 496 | if (!alloc_cpumask_var(&this_cpumask, GFP_KERNEL)) | ^~ In file included from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/kthread.h:6, from kernel/trace/trace_hwlat.c:40: include/linux/cpumask.h:767:53: note: expected 'struct cpumask (*)[1]' but argument is of type 'struct cpumask **' 767 | static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) | ~~~~~~~~~~~~~~~^~~~ In file included from include/linux/err.h:5, from include/linux/kthread.h:5, from kernel/trace/trace_hwlat.c:40: kernel/trace/trace_hwlat.c:496:25: error: passing argument 1 of 'alloc_cpumask_var' from incompatible pointer type [-Werror=incompatible-pointer-types] 496 | if (!alloc_cpumask_var(&this_cpumask, GFP_KERNEL)) | ^~~~~~~~~~~~~ | | | struct cpumask ** include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' 69 | (cond) ? \ | ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' 56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~~~~~~~~~~~ kernel/trace/trace_hwlat.c:496:2: note: in expansion of macro 'if' 496 | if (!alloc_cpumask_var(&this_cpumask, GFP_KERNEL)) | ^~ In file included from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/kthread.h:6, from kernel/trace/trace_hwlat.c:40: include/linux/cpumask.h:767:53: note: expected 'struct cpumask (*)[1]' but argument is of type 'struct cpumask **' 767 | static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) | ~~~~~~~~~~~~~~~^~~~ kernel/trace/trace_hwlat.c: In function 'hwlat_mode_write': kernel/trace/trace_hwlat.c:800:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 800 | int ret; | ^~~ cc1: some warnings being treated as errors vim +/get_cpu_data +122 kernel/trace/trace_hwlat.c 121 > 122 struct hwlat_kthread_data *get_cpu_data(void) 123 { 124 if (hwlat_data.thread_mode == MODE_PER_CPU) 125 return this_cpu_ptr(&hwlat_per_cpu_data); 126 else 127 return &hwlat_single_cpu_data; 128 } 129 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org