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Arnaldo Carvalho de Melo authored
This new test will validate these new routines extracted from 'perf record': - perf_evlist__config_attrs - perf_evlist__prepare_workload - perf_evlist__start_workload In addition to several other perf_evlist methods. It consists of starting a simple workload, setting up just one event to monitor ("cycles") requesting that several PERF_SAMPLE_ fields be present in all events. It then will check that the expected PERF_RECORD_ events are produced and will sanity check all its fields. Some checks performed: . PERF_SAMPLE_TIME monotonically increases. . PERF_SAMPLE_CPU is the one requested with sched_setaffinity . PERF_SAMPLE_TID and PERF_SAMPLE_PID matches the one we forked in perf_evlist__prepare_workload and that is stored in evlist->workload.pid . For the events where these fields are also present in its pre-sample_id_all fields (e.g. event->mmap.pid), that they are what is expected too. . That we get a bunch of mmaps: PATH/libcSUFFIX PATH/ldSUFFIX [vdso] PATH/sleep Example: [root@emilia ~]# taskset -c 3,4 perf test -v1 perf_sample 6: Validate PERF_RECORD_* events & perf_sample fields: --- start --- 7159480799825 3 PERF_RECORD_SAMPLE 7159480805584 3 PERF_RECORD_SAMPLE 7159480807814 3 PERF_RECORD_SAMPLE 7159480810430 3 PERF_RECORD_SAMPLE 7159480861511 3 PERF_RECORD_MMAP 8086/8086: [0x7fffffffd000(0x2000) @ 0x7fffffffd000]: //anon 7159481052516 3 PERF_RECORD_COMM: sleep:8086 7159481070188 3 PERF_RECORD_MMAP 8086/8086: [0x400000(0x6000) @ 0]: /bin/sleep 7159481077104 3 PERF_RECORD_MMAP 8086/8086: [0x3d06400000(0x221000) @ 0]: /lib64/ld-2.12.so 7159481092912 3 PERF_RECORD_MMAP 8086/8086: [0x7fff1adff000(0x1000) @ 0x7fff1adff000]: [vdso] 7159481196779 3 PERF_RECORD_MMAP 8086/8086: [0x3d06800000(0x37f000) @ 0]: /lib64/libc-2.12.so 7160481558435 3 PERF_RECORD_EXIT(8086:8086):(8086:8086) ---- end ---- Validate PERF_RECORD_* events & perf_sample fields: Ok [root@emilia ~]# Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-svag18v2z4idas0dyz3umjpq@git.kernel.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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