user/sven/linux.git/tools/perf/tests, branch v5.16

perf test: Reset shadow counts before loading

2021-12-07T00:57:53Z

Otherwise load counting is an average. Without this change duration_time in test_memory_bandwidth will alter its value if an earlier test contains duration_time. This patch fixes an issue that's introduced in the proposed patch: https://lore.kernel.org/lkml/20211124015226.3317994-1-irogers@google.com/ in perf test "Parse and process metrics". Signed-off-by: Ian Rogers Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Paul Clarke Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20211128085810.4027314-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fix 'Simple expression parser' test on arch without CPU die topology info

2021-12-07T00:57:53Z

Some platforms do not have CPU die support, for example s390. Commit Cc: Ian Rogers Fixes: fdf1e29b6118c18f ("perf expr: Add metric literals for topology.") fails on s390: # perf test -Fv 7 ... # FAILED tests/expr.c:173 #num_dies >= #num_packages ---- end ---- Simple expression parser: FAILED! # Investigating this issue leads to these functions: build_cpu_topology() +--> has_die_topology(void) { struct utsname uts; if (uname(&uts) < 0) return false; if (strncmp(uts.machine, "x86_64", 6)) return false; .... } which always returns false on s390. The caller build_cpu_topology() checks has_die_topology() return value. On false the the struct cpu_topology::die_cpu_list is not contructed and has zero entries. This leads to the failing comparison: #num_dies >= #num_packages. s390 of course has a positive number of packages. Fix this and check if the function build_cpu_topology() did build up a die_cpus_list. The number of entries in this list should be larger than 0. If the number of list element is zero, the die_cpus_list has not been created and the check in function test__expr(): TEST_ASSERT_VAL("#num_dies >= #num_packages", \ num_dies >= num_packages) always fails. Output after: # perf test -Fv 7 7: Simple expression parser : --- start --- division by zero syntax error ---- end ---- Simple expression parser: Ok # Fixes: fdf1e29b6118c18f ("perf expr: Add metric literals for topology.") Signed-off-by: Thomas Richter Acked-by: Ian Rogers Cc: Heiko Carstens Cc: Sumanth Korikkar Cc: Sven Schnelle Cc: Vasily Gorbik Link: http://lore.kernel.org/lkml/20211129112339.3003036-1-tmricht@linux.ibm.com [ Added comment in the added 'if (num_dies)' line about architectures not having die topology ] Signed-off-by: Arnaldo Carvalho de Melo

perf evsel: Fix memory leaks relating to unit

2021-11-18T13:19:14Z

unit may have a strdup pointer or be to a literal, consequently memory assocciated with it isn't freed. Change it so the unit is always strdup and so the memory can be safely freed. Fix related issue in perf_event__process_event_update() for name and own_cpus. Leaks were spotted by leak sanitizer. Signed-off-by: Ian Rogers Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20211118084749.2191447-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf test sample-parsing: Fix branch_stack entry endianness check

2021-11-18T13:08:07Z

Commit 10269a2ca2b08cbd ("perf test sample-parsing: Add endian test for struct branch_flags") broke the test case 27 (Sample parsing) on s390 on linux-next tree: # perf test -Fv 27 27: Sample parsing --- start --- parsing failed for sample_type 0x800 ---- end ---- Sample parsing: FAILED! # The cause of the failure is a wrong #define BS_EXPECTED_BE statement in above commit. Correct this define and the test case runs fine. Output After: # perf test -Fv 27 27: Sample parsing : --- start --- ---- end ---- Sample parsing: Ok # Fixes: 10269a2ca2b08c ("perf test sample-parsing: Add endian test for struct branch_flags") Signed-off-by: Thomas Richter Tested-by: Madhavan Srinivasan Acked-by: Madhavan Srinivasan CC: Sven Schnelle Cc: Heiko Carstens Cc: Jiri Olsa Cc: Sumanth Korikkar Cc: Vasily Gorbik Link: https://lore.kernel.org/r/54077e81-503e-3405-6cb0-6541eb5532cc@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests wp: Remove unused functions on s390

2021-11-18T13:08:07Z

Fixing these build problems: tests/wp.c:24:12: error: 'wp_read' defined but not used [-Werror=unused-function] static int wp_read(int fd, long long *count, int size) ^ tests/wp.c:35:13: error: 'get__perf_event_attr' defined but not used [-Werror=unused-function] static void get__perf_event_attr(struct perf_event_attr *attr, int wp_type, ^ CC /tmp/build/perf/util/print_binary.o Fixes: e47c6ecaae1df54a ("perf test: Convert watch point tests to test cases.") Cc: Alexander Shishkin Cc: Brendan Higgins Cc: Daniel Latypov Cc: David Gow Cc: Ian Rogers Cc: Ingo Molnar Cc: Jin Yao Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Namhyung Kim Cc: Paul Clarke Cc: Peter Zijlstra Cc: Sohaib Mohamed Cc: Stephane Eranian Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Remove bash constructs from stat_all_pmu.sh

2021-11-13T21:11:51Z

The tests were passing but without testing and were printing the following: $ ./perf test -v 90 90: perf all PMU test : --- start --- test child forked, pid 51650 Testing cpu/branch-instructions/ ./tests/shell/stat_all_pmu.sh: 10: [: Performance counter stats for 'true': 137,307 cpu/branch-instructions/ 0.001686672 seconds time elapsed 0.001376000 seconds user 0.000000000 seconds sys: unexpected operator Changing the regexes to a grep works in sh and prints this: $ ./perf test -v 90 90: perf all PMU test : --- start --- test child forked, pid 60186 [...] Testing tlb_flush.stlb_any test child finished with 0 ---- end ---- perf all PMU test: Ok Signed-off-by: James Clark Cc: Alexander Shishkin Cc: Florian Fainelli Cc: Ian Rogers Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Song Liu Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20211028134828.65774-4-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Remove bash construct from record+zstd_comp_decomp.sh

2021-11-13T21:11:51Z

Commit 463538a383a2 ("perf tests: Fix test 68 zstd compression for s390") inadvertently removed the -g flag from all platforms rather than just s390, because the [[ ]] construct fails in sh. Changing to single brackets restores testing of call graphs and removes the following error from the output: $ ./perf test -v 85 85: Zstd perf.data compression/decompression : --- start --- test child forked, pid 50643 Collecting compressed record file: ./tests/shell/record+zstd_comp_decomp.sh: 15: [[: not found Fixes: 463538a383a2 ("perf tests: Fix test 68 zstd compression for s390") Signed-off-by: James Clark Cc: Alexander Shishkin Cc: Florian Fainelli Cc: Ian Rogers Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Song Liu Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20211028134828.65774-3-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Remove bash construct from stat_bpf_counters.sh test

2021-11-13T21:11:51Z

Currently the test skips with an error because == only works in bash: $ ./perf test 91 -v Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc 91: perf stat --bpf-counters test : --- start --- test child forked, pid 44586 ./tests/shell/stat_bpf_counters.sh: 26: [: -v: unexpected operator test child finished with -2 ---- end ---- perf stat --bpf-counters test: Skip Changing == to = does the same thing, but doesn't result in an error: ./perf test 91 -v Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc 91: perf stat --bpf-counters test : --- start --- test child forked, pid 45833 Skipping: --bpf-counters not supported Error: unknown option `bpf-counters' [...] test child finished with -2 ---- end ---- perf stat --bpf-counters test: Skip Signed-off-by: James Clark Cc: Alexander Shishkin Cc: Florian Fainelli Cc: Ian Rogers Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Song Liu Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20211028134828.65774-2-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test bpf: Use ARRAY_CHECK() instead of ad-hoc equivalent, addressing array_size.cocci warning

2021-11-13T21:11:51Z

Address following coccicheck warnings: ./tools/perf/tests/bpf.c:316:22-23: WARNING: Use ARRAY_SIZE. Signed-off-by: Guo Zhengkui Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Andrii Nakryiko Cc: Daniel Borkmann Cc: Ian Rogers Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Song Liu Cc: Thomas Richter Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: kernel@vivo.com Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20211108070801.5540-1-guozhengkui@vivo.com Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Snapshot mode test

2021-11-13T21:11:50Z

Shell script test_arm_spe.sh has been added to test the recording of SPE tracing events in snapshot mode. Reviewed-by: Leo Yan Signed-off-by: German Gomez Acked-by: Namhyung Kim Cc: Alexander Shishkin Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20211109163009.92072-4-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo