18c2ecf20Sopenharmony_ciThe struct perf_event_attr test (attr tests) support 28c2ecf20Sopenharmony_ci==================================================== 38c2ecf20Sopenharmony_ciThis testing support is embedded into perf directly and is governed 48c2ecf20Sopenharmony_ciby the PERF_TEST_ATTR environment variable and hook inside the 58c2ecf20Sopenharmony_cisys_perf_event_open function. 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ciThe general idea is to store 'struct perf_event_attr' details for 88c2ecf20Sopenharmony_cieach event created within single perf command. Each event details 98c2ecf20Sopenharmony_ciare stored into separate text file. Once perf command is finished 108c2ecf20Sopenharmony_cithese files are checked for values we expect for command. 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ciThe attr tests consist of following parts: 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_citests/attr.c 158c2ecf20Sopenharmony_ci------------ 168c2ecf20Sopenharmony_ciThis is the sys_perf_event_open hook implementation. The hook 178c2ecf20Sopenharmony_ciis triggered when the PERF_TEST_ATTR environment variable is 188c2ecf20Sopenharmony_cidefined. It must contain name of existing directory with access 198c2ecf20Sopenharmony_ciand write permissions. 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ciFor each sys_perf_event_open call event details are stored in 228c2ecf20Sopenharmony_ciseparate file. Besides 'struct perf_event_attr' values we also 238c2ecf20Sopenharmony_cistore 'fd' and 'group_fd' values to allow checking for groups. 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_citests/attr.py 268c2ecf20Sopenharmony_ci------------- 278c2ecf20Sopenharmony_ciThis is the python script that does all the hard work. It reads 288c2ecf20Sopenharmony_cithe test definition, executes it and checks results. 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_citests/attr/ 318c2ecf20Sopenharmony_ci----------- 328c2ecf20Sopenharmony_ciDirectory containing all attr test definitions. 338c2ecf20Sopenharmony_ciFollowing tests are defined (with perf commands): 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci perf record kill (test-record-basic) 368c2ecf20Sopenharmony_ci perf record -b kill (test-record-branch-any) 378c2ecf20Sopenharmony_ci perf record -j any kill (test-record-branch-filter-any) 388c2ecf20Sopenharmony_ci perf record -j any_call kill (test-record-branch-filter-any_call) 398c2ecf20Sopenharmony_ci perf record -j any_ret kill (test-record-branch-filter-any_ret) 408c2ecf20Sopenharmony_ci perf record -j hv kill (test-record-branch-filter-hv) 418c2ecf20Sopenharmony_ci perf record -j ind_call kill (test-record-branch-filter-ind_call) 428c2ecf20Sopenharmony_ci perf record -j k kill (test-record-branch-filter-k) 438c2ecf20Sopenharmony_ci perf record -j u kill (test-record-branch-filter-u) 448c2ecf20Sopenharmony_ci perf record -c 123 kill (test-record-count) 458c2ecf20Sopenharmony_ci perf record -d kill (test-record-data) 468c2ecf20Sopenharmony_ci perf record -F 100 kill (test-record-freq) 478c2ecf20Sopenharmony_ci perf record -g kill (test-record-graph-default) 488c2ecf20Sopenharmony_ci perf record --call-graph dwarf kill (test-record-graph-dwarf) 498c2ecf20Sopenharmony_ci perf record --call-graph fp kill (test-record-graph-fp) 508c2ecf20Sopenharmony_ci perf record --group -e cycles,instructions kill (test-record-group) 518c2ecf20Sopenharmony_ci perf record -e '{cycles,instructions}' kill (test-record-group1) 528c2ecf20Sopenharmony_ci perf record -e '{cycles/period=1/,instructions/period=2/}:S' kill (test-record-group2) 538c2ecf20Sopenharmony_ci perf record -D kill (test-record-no-delay) 548c2ecf20Sopenharmony_ci perf record -i kill (test-record-no-inherit) 558c2ecf20Sopenharmony_ci perf record -n kill (test-record-no-samples) 568c2ecf20Sopenharmony_ci perf record -c 100 -P kill (test-record-period) 578c2ecf20Sopenharmony_ci perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period) 588c2ecf20Sopenharmony_ci perf record -R kill (test-record-raw) 598c2ecf20Sopenharmony_ci perf stat -e cycles kill (test-stat-basic) 608c2ecf20Sopenharmony_ci perf stat kill (test-stat-default) 618c2ecf20Sopenharmony_ci perf stat -d kill (test-stat-detailed-1) 628c2ecf20Sopenharmony_ci perf stat -dd kill (test-stat-detailed-2) 638c2ecf20Sopenharmony_ci perf stat -ddd kill (test-stat-detailed-3) 648c2ecf20Sopenharmony_ci perf stat --group -e cycles,instructions kill (test-stat-group) 658c2ecf20Sopenharmony_ci perf stat -e '{cycles,instructions}' kill (test-stat-group1) 668c2ecf20Sopenharmony_ci perf stat -i -e cycles kill (test-stat-no-inherit) 67