kernel/linux.git/tools/lib/perf/tests, branch v6.6.131

libperf: Add a test case for read formats

2022-08-19T18:56:44+00:00

It checks a various combination of the read format settings and verify it return the value in a proper position. The test uses task-clock software events to guarantee it's always active and sets enabled/running time. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Ian Rogers Cc: Ingo Molnar Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20220819003644.508916-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf tests: Fix typo in perf_evlist__open() failure error messages

2022-03-26T13:55:57+00:00

This patch corrects typos in error messages. I should be "evlist", not "evsel" as the function that fails is perf_evlist__open(). Fixes: 3ce311afb5583cf3 ("libperf: Move to tools/lib/perf") Fixes: a7f3713f6bf207e6 ("libperf tests: Add test_stat_multiplexing test") Signed-off-by: Shunsuke Nakamura Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20220325043829.224045-2-nakamura.shun@fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo

libperf: Add API for allocating new thread map array

2022-02-23T17:40:23+00:00

The existing API perf_thread_map__new_dummy() allocates new thread map for one thread. I couldn't find a way to reallocate the map with more threads, or to allocate a new map for more than one thread. Having multiple threads in a thread map is essential for some use cases. That's why a new API is proposed, which allocates a new thread map for given number of threads: perf_thread_map__new_array() Signed-off-by: Tzvetomir Stoyanov (VMware) Acked-by: Jiri Olsa Cc: Ian Rogers Link: https://lore.kernel.org/linux-perf-users/20220221102628.43904-1-tz.stoyanov@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

libperf: Fix perf_cpu_map__for_each_cpu macro

2022-02-16T16:49:25+00:00

Tzvetomir Stoyanov reported an issue with using macro perf_cpu_map__for_each_cpu using private perf_cpu object. The issue is caused by recent change that wrapped cpu in struct perf_cpu to distinguish it from cpu indexes. We need to make struct perf_cpu public. Add a simple test for using the perf_cpu_map__for_each_cpu macro. Fixes: 6d18804b963b78dc ("perf cpumap: Give CPUs their own type") Reported-by: Tzvetomir Stoyanov (VMware) Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Ian Rogers Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20220215153713.31395-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Fix 32-bit build for tests uint64_t printf

2022-02-16T16:49:24+00:00

Commit a7f3713f6bf207e6 ("libperf tests: Add test_stat_multiplexing test") added printf's of 64-bit ints using %lu which doesn't work on 32-bit builds: tests/test-evlist.c:529:29: error: format ‘%lu’ expects argument of type \ ‘long unsigned int’, but argument 4 has type ‘uint64_t’ {aka ‘long long unsigned int’} [-Werror=format=] Use PRIu64 instead which works on both 32-bit and 64-bit systems. Fixes: a7f3713f6bf207e6 ("libperf tests: Add test_stat_multiplexing test") Signed-off-by: Rob Herring Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Shunsuke Nakamura Link: https://lore.kernel.org/r/20220201213903.699656-1-robh@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

libperf: Add arm64 support to perf_mmap__read_self()

2022-02-06T12:14:27+00:00

Add the arm64 variants for read_perf_counter() and read_timestamp(). Unfortunately the counter number is encoded into the instruction, so the code is a bit verbose to enumerate all possible counters. Tested-by: Masayoshi Mizuma Signed-off-by: Rob Herring Acked-by: Jiri Olsa Tested-by: John Garry Signed-off-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20220201214056.702854-1-robh@kernel.org Cc: Mark Rutland Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Namhyung Kim Cc: Will Deacon Cc: Alexander Shishkin Cc: Ingo Molnar Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org

libperf tests: Update a use of the new cpumap API

2022-01-14T14:36:03+00:00

Fixes a build breakage. Fixes: 6d18804b963b78dc ("perf cpumap: Give CPUs their own type") Signed-off-by: Ian Rogers Cc: Alexander Shishkin Cc: colin ian king Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Shunsuke Nakamura Link: http://lore.kernel.org/lkml/20220114065105.1806542-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

libperf tests: Fix a spelling mistake "Runnnig" -> "Running"

2021-12-16T15:18:12+00:00

There is a spelling mistake in a __T_VERBOSE message. Fix it. Signed-off-by: Colin Ian King Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: kernel-janitors@vger.kernel.org Link: http://lore.kernel.org/lkml/20211212222122.478537-1-colin.i.king@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

libperf tests: Add test_stat_multiplexing test

2021-12-08T01:18:23+00:00

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 Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Rob Herring Link: https://lore.kernel.org/r/20211109085831.3770594-4-nakamura.shun@fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo

libperf tests: Fix test_stat_cpu

2021-10-14T18:41:35+00:00

The `cpu` argument of perf_evsel__read() must specify the cpu index. perf_cpu_map__for_each_cpu() is for iterating the cpu number (not index) and is thus not appropriate for use with perf_evsel__read(). So, if there is an offline CPU, the cpu number specified in the argument may point out of range because the cpu number and the cpu index are different. Fix test_stat_cpu(). Testing it: # make tests -C tools/lib/perf/ make: Entering directory '/home/nakamura/kernel_src/linux-5.15-rc4_fix/tools/lib/perf' running static: - running tests/test-cpumap.c...OK - running tests/test-threadmap.c...OK - running tests/test-evlist.c...OK - running tests/test-evsel.c...OK running dynamic: - running tests/test-cpumap.c...OK - running tests/test-threadmap.c...OK - running tests/test-evlist.c...OK - running tests/test-evsel.c...OK make: Leaving directory '/home/nakamura/kernel_src/linux-5.15-rc4_fix/tools/lib/perf' Signed-off-by: Shunsuke Nakamura Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20211011083704.4108720-1-nakamura.shun@fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo