libperf tests: Add test_stat_multiplexing test
Adds a test for a counter obtained using read() system call during
multiplexing.
$ sudo make tests -C ./tools/lib/perf/ V=1
make: Entering directory '/home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/lib/perf'
make -f /home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/build/Makefile.build dir=. obj=libperf
make -C /home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/lib/api/ O= libapi.a
make -f /home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/build/Makefile.build dir=./fd obj=libapi
make -f /home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/build/Makefile.build dir=./fs obj=libapi
make -f /home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/build/Makefile.build dir=. obj=tests
make -f /home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/build/Makefile.build dir=./tests obj=tests
running static:
- running tests/test-cpumap.c...OK
- running tests/test-threadmap.c...OK
- running tests/test-evlist.c...
Event 0 -- Raw count =
298049842, run =
270269503, enable =
456262127
Scaled count =
503160191 (59.24%,
270269503/
456262127)
Event 1 -- Raw count =
299134173, run =
271075173, enable =
456257234
Scaled count =
503484435 (59.41%,
271075173/
456257234)
Event 2 -- Raw count =
300461996, run =
272069283, enable =
456253417
Scaled count =
503867290 (59.63%,
272069283/
456253417)
Event 3 -- Raw count =
301308704, run =
273063387, enable =
456249352
Scaled count =
503443183 (59.85%,
273063387/
456249352)
Event 4 -- Raw count =
302531164, run =
274102932, enable =
456244712
Scaled count =
503563543 (60.08%,
274102932/
456244712)
Event 5 -- Raw count =
303710254, run =
275406214, enable =
456228165
Scaled count =
503115633 (60.37%,
275406214/
456228165)
Event 6 -- Raw count =
304531302, run =
276396076, enable =
456221130
Scaled count =
502661313 (60.58%,
276396076/
456221130)
Event 7 -- Raw count =
304486460, run =
276601890, enable =
456213754
Scaled count =
502205212 (60.63%,
276601890/
456213754)
Event 8 -- Raw count =
304116681, run =
276631326, enable =
456205562
Scaled count =
501532936 (60.64%,
276631326/
456205562)
Event 9 -- Raw count =
303567766, run =
276188567, enable =
456196839
Scaled count =
501420666 (60.54%,
276188567/
456196839)
Event 10 -- Raw count =
302238014, run =
275144001, enable =
456185300
Scaled count =
501106833 (60.31%,
275144001/
456185300)
Event 11 -- Raw count =
300805716, run =
273824589, enable =
456175608
Scaled count =
501124573 (60.03%,
273824589/
456175608)
Event 12 -- Raw count =
299959051, run =
272834556, enable =
456166593
Scaled count =
501517477 (59.81%,
272834556/
456166593)
Event 13 -- Raw count =
299037090, run =
271820805, enable =
456157086
Scaled count =
501830195 (59.59%,
271820805/
456157086)
Event 14 -- Raw count =
298327042, run =
270784311, enable =
456147546
Scaled count =
502544433 (59.36%,
270784311/
456147546)
Expected:
501614268
High:
503867290 Low:
298049842 Average:
502438527
Average Error = 0.16%
OK
- running tests/test-evsel.c...
loop = 65536, count = 328182
loop = 131072, count = 660214
loop = 262144, count =
1315534
loop = 524288, count =
2635364
loop =
1048576, count =
5271971
loop = 65536, count = 491952
loop = 131072, count = 850061
loop = 262144, count =
1648608
loop = 524288, count =
3162059
loop =
1048576, count =
6353393
OK
running dynamic:
- running tests/test-cpumap.c...OK
- running tests/test-threadmap.c...OK
- running tests/test-evlist.c...
Event 0 -- Raw count =
300218292, run =
297528154, enable =
496789343
Scaled count =
501281125 (59.89%,
297528154/
496789343)
Event 1 -- Raw count =
301438606, run =
298515328, enable =
496784768
Scaled count =
501649643 (60.09%,
298515328/
496784768)
Event 2 -- Raw count =
302342618, run =
298798983, enable =
496782015
Scaled count =
502673648 (60.15%,
298798983/
496782015)
Event 3 -- Raw count =
303132319, run =
299230407, enable =
496778508
Scaled count =
503256412 (60.23%,
299230407/
496778508)
Event 4 -- Raw count =
302758195, run =
299218047, enable =
496774243
Scaled count =
502651743 (60.23%,
299218047/
496774243)
Event 5 -- Raw count =
303158458, run =
299204274, enable =
496769146
Scaled count =
503334281 (60.23%,
299204274/
496769146)
Event 6 -- Raw count =
303471397, run =
299197479, enable =
496763124
Scaled count =
503859189 (60.23%,
299197479/
496763124)
Event 7 -- Raw count =
303583387, run =
299196861, enable =
496756458
Scaled count =
504039405 (60.23%,
299196861/
496756458)
Event 8 -- Raw count =
303096897, run =
299186924, enable =
496748667
Scaled count =
503240507 (60.23%,
299186924/
496748667)
Event 9 -- Raw count =
301424173, run =
297845086, enable =
496739994
Scaled count =
502709122 (59.96%,
297845086/
496739994)
Event 10 -- Raw count =
300876415, run =
296851339, enable =
496729034
Scaled count =
503464297 (59.76%,
296851339/
496729034)
Event 11 -- Raw count =
300239338, run =
296547963, enable =
496719538
Scaled count =
502902612 (59.70%,
296547963/
496719538)
Event 12 -- Raw count =
299751948, run =
296547195, enable =
496710036
Scaled count =
502077926 (59.70%,
296547195/
496710036)
Event 13 -- Raw count =
299341883, run =
296549981, enable =
496700423
Scaled count =
501376663 (59.70%,
296549981/
496700423)
Event 14 -- Raw count =
299145476, run =
296561684, enable =
496690949
Scaled count =
501018366 (59.71%,
296561684/
496690949)
Expected:
501669431
High:
504039405 Low:
300218292 Average:
502635662
Average Error = 0.19%
OK
- running tests/test-evsel.c...
loop = 65536, count = 329275
loop = 131072, count = 664638
loop = 262144, count =
1315367
loop = 524288, count =
2629617
loop =
1048576, count =
5273657
loop = 65536, count = 459641
loop = 131072, count = 978402
loop = 262144, count =
1581219
loop = 524288, count =
3774908
loop =
1048576, count =
7694417
OK
make: Leaving directory '/home/nakamura/build_work/build_kernel/linux_kernel/linux/tools/lib/perf'
Signed-off-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211109085831.3770594-4-nakamura.shun@fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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