Hi Pedro, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on hnaz-mm/master] url: https://github.com/0day-ci/linux/commits/Pedro-Demarchi-Gomes/mm-damon-Add-option-to-monitor-only-writes/20220203-211407 base: https://github.com/hnaz/linux-mm master config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220204/202202040109.d4u6Jwvm-lkp@xxxxxxxxx/config) compiler: arceb-elf-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/0958bb7e2514b62f174b8e5ccfdcff07ce2a2b6b git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Pedro-Demarchi-Gomes/mm-damon-Add-option-to-monitor-only-writes/20220203-211407 git checkout 0958bb7e2514b62f174b8e5ccfdcff07ce2a2b6b # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash mm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from mm/damon/core.c:1123: mm/damon/core-test.h: In function 'damon_test_merge_two': mm/damon/core-test.h:154:33: error: passing argument 1 of 'damon_merge_two_regions' from incompatible pointer type [-Werror=incompatible-pointer-types] 154 | damon_merge_two_regions(t, r, r2); | ^ | | | struct damon_target * mm/damon/core.c:761:55: note: expected 'struct damon_ctx *' but argument is of type 'struct damon_target *' 761 | static void damon_merge_two_regions(struct damon_ctx *c, struct damon_target *t, | ~~~~~~~~~~~~~~~~~~^ In file included from mm/damon/core.c:1123: mm/damon/core-test.h:154:36: error: passing argument 2 of 'damon_merge_two_regions' from incompatible pointer type [-Werror=incompatible-pointer-types] 154 | damon_merge_two_regions(t, r, r2); | ^ | | | struct damon_region * mm/damon/core.c:761:79: note: expected 'struct damon_target *' but argument is of type 'struct damon_region *' 761 | static void damon_merge_two_regions(struct damon_ctx *c, struct damon_target *t, | ~~~~~~~~~~~~~~~~~~~~~^ In file included from mm/damon/core.c:1123: mm/damon/core-test.h:154:9: error: too few arguments to function 'damon_merge_two_regions' 154 | damon_merge_two_regions(t, r, r2); | ^~~~~~~~~~~~~~~~~~~~~~~ mm/damon/core.c:761:13: note: declared here 761 | static void damon_merge_two_regions(struct damon_ctx *c, struct damon_target *t, | ^~~~~~~~~~~~~~~~~~~~~~~ In file included from mm/damon/core.c:1123: mm/damon/core-test.h: In function 'damon_test_merge_regions_of': mm/damon/core-test.h:201:32: error: passing argument 1 of 'damon_merge_regions_of' from incompatible pointer type [-Werror=incompatible-pointer-types] 201 | damon_merge_regions_of(t, 9, 9999); | ^ | | | struct damon_target * mm/damon/core.c:787:54: note: expected 'struct damon_ctx *' but argument is of type 'struct damon_target *' 787 | static void damon_merge_regions_of(struct damon_ctx *c, struct damon_target *t, unsigned int thres, | ~~~~~~~~~~~~~~~~~~^ In file included from mm/damon/core.c:1123: >> mm/damon/core-test.h:201:35: warning: passing argument 2 of 'damon_merge_regions_of' makes pointer from integer without a cast [-Wint-conversion] 201 | damon_merge_regions_of(t, 9, 9999); | ^ | | | int mm/damon/core.c:787:78: note: expected 'struct damon_target *' but argument is of type 'int' 787 | static void damon_merge_regions_of(struct damon_ctx *c, struct damon_target *t, unsigned int thres, | ~~~~~~~~~~~~~~~~~~~~~^ In file included from mm/damon/core.c:1123: mm/damon/core-test.h:201:9: error: too few arguments to function 'damon_merge_regions_of' 201 | damon_merge_regions_of(t, 9, 9999); | ^~~~~~~~~~~~~~~~~~~~~~ mm/damon/core.c:787:13: note: declared here 787 | static void damon_merge_regions_of(struct damon_ctx *c, struct damon_target *t, unsigned int thres, | ^~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/perf_event.h:25, from include/linux/trace_events.h:10, from include/trace/trace_events.h:21, from include/trace/define_trace.h:102, from include/trace/events/damon.h:43, from mm/damon/core.c:19: At top level: arch/arc/include/asm/perf_event.h:126:27: warning: 'arc_pmu_cache_map' defined but not used [-Wunused-const-variable=] 126 | static const unsigned int arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { | ^~~~~~~~~~~~~~~~~ arch/arc/include/asm/perf_event.h:91:27: warning: 'arc_pmu_ev_hw_map' defined but not used [-Wunused-const-variable=] 91 | static const char * const arc_pmu_ev_hw_map[] = { | ^~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/damon_merge_regions_of +201 mm/damon/core-test.h 17ccae8bb5c9289 SeongJae Park 2021-09-07 181 17ccae8bb5c9289 SeongJae Park 2021-09-07 182 static void damon_test_merge_regions_of(struct kunit *test) 17ccae8bb5c9289 SeongJae Park 2021-09-07 183 { 17ccae8bb5c9289 SeongJae Park 2021-09-07 184 struct damon_target *t; 17ccae8bb5c9289 SeongJae Park 2021-09-07 185 struct damon_region *r; 17ccae8bb5c9289 SeongJae Park 2021-09-07 186 unsigned long sa[] = {0, 100, 114, 122, 130, 156, 170, 184}; 17ccae8bb5c9289 SeongJae Park 2021-09-07 187 unsigned long ea[] = {100, 112, 122, 130, 156, 170, 184, 230}; 17ccae8bb5c9289 SeongJae Park 2021-09-07 188 unsigned int nrs[] = {0, 0, 10, 10, 20, 30, 1, 2}; 17ccae8bb5c9289 SeongJae Park 2021-09-07 189 17ccae8bb5c9289 SeongJae Park 2021-09-07 190 unsigned long saddrs[] = {0, 114, 130, 156, 170}; 17ccae8bb5c9289 SeongJae Park 2021-09-07 191 unsigned long eaddrs[] = {112, 130, 156, 170, 230}; 17ccae8bb5c9289 SeongJae Park 2021-09-07 192 int i; 17ccae8bb5c9289 SeongJae Park 2021-09-07 193 17ccae8bb5c9289 SeongJae Park 2021-09-07 194 t = damon_new_target(42); 17ccae8bb5c9289 SeongJae Park 2021-09-07 195 for (i = 0; i < ARRAY_SIZE(sa); i++) { 17ccae8bb5c9289 SeongJae Park 2021-09-07 196 r = damon_new_region(sa[i], ea[i]); 17ccae8bb5c9289 SeongJae Park 2021-09-07 197 r->nr_accesses = nrs[i]; 17ccae8bb5c9289 SeongJae Park 2021-09-07 198 damon_add_region(r, t); 17ccae8bb5c9289 SeongJae Park 2021-09-07 199 } 17ccae8bb5c9289 SeongJae Park 2021-09-07 200 17ccae8bb5c9289 SeongJae Park 2021-09-07 @201 damon_merge_regions_of(t, 9, 9999); 17ccae8bb5c9289 SeongJae Park 2021-09-07 202 /* 0-112, 114-130, 130-156, 156-170 */ 17ccae8bb5c9289 SeongJae Park 2021-09-07 203 KUNIT_EXPECT_EQ(test, damon_nr_regions(t), 5u); 17ccae8bb5c9289 SeongJae Park 2021-09-07 204 for (i = 0; i < 5; i++) { 17ccae8bb5c9289 SeongJae Park 2021-09-07 205 r = __nth_region_of(t, i); 17ccae8bb5c9289 SeongJae Park 2021-09-07 206 KUNIT_EXPECT_EQ(test, r->ar.start, saddrs[i]); 17ccae8bb5c9289 SeongJae Park 2021-09-07 207 KUNIT_EXPECT_EQ(test, r->ar.end, eaddrs[i]); 17ccae8bb5c9289 SeongJae Park 2021-09-07 208 } 17ccae8bb5c9289 SeongJae Park 2021-09-07 209 damon_free_target(t); 17ccae8bb5c9289 SeongJae Park 2021-09-07 210 } 17ccae8bb5c9289 SeongJae Park 2021-09-07 211 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx