Hi Beau, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/perf/core] [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/Beau-Belgrave/user_events-Enable-user-processes-to-create-and-write-to-trace-events/20211019-071039 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 79df45731da68772d2285265864a52c900b8c65f config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 11.2.0 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/c165bf4b91374ac0ffac76a9f93be466d37a5545 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Beau-Belgrave/user_events-Enable-user-processes-to-create-and-write-to-trace-events/20211019-071039 git checkout c165bf4b91374ac0ffac76a9f93be466d37a5545 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): kernel/trace/trace_events_user.c: In function 'user_status_mmap': >> kernel/trace/trace_events_user.c:880:38: error: 'PAGE_READONLY' undeclared (first use in this function); did you mean 'MNT_READONLY'? 880 | size, PAGE_READONLY); | ^~~~~~~~~~~~~ | MNT_READONLY kernel/trace/trace_events_user.c:880:38: note: each undeclared identifier is reported only once for each function it appears in kernel/trace/trace_events_user.c:881:1: error: control reaches end of non-void function [-Werror=return-type] 881 | } | ^ cc1: some warnings being treated as errors vim +880 kernel/trace/trace_events_user.c 867 868 /* 869 * Maps the shared page into the user process for checking if event is enabled. 870 */ 871 static int user_status_mmap(struct file *file, struct vm_area_struct *vma) 872 { 873 unsigned long size = vma->vm_end - vma->vm_start; 874 875 if (size != MAX_EVENTS) 876 return -EINVAL; 877 878 return remap_pfn_range(vma, vma->vm_start, 879 virt_to_phys(register_page_data) >> PAGE_SHIFT, > 880 size, PAGE_READONLY); 881 } 882 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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