kernel/git/stable/linux.git/tools/perf/tests, branch linux-6.0.y

perf test: Fix "all PMU test" to skip parametrized events

2022-12-31T12:26:50+00:00

[ Upstream commit b50d691e50e600fab82b423be871860537d75dc9 ] Parametrized events are not only a powerpc domain. They occur on other platforms too (e.g. aarch64). They should be ignored in this testcase, since proper setup of the parameters is out of scope of this script. Let's not filter them out by PMU name, but rather based on the fact that they expect a parameter. Fixes: 451ed8058c69a3fe ("perf test: Fix "all PMU test" to skip hv_24x7/hv_gpci tests on powerpc") Signed-off-by: Michael Petlan Cc: Athira Rajeev Cc: Disha Goel Cc: Ian Rogers Cc: Michael Ellerman Cc: Nageswara R Sastry Link: https://lore.kernel.org/r/20221219163008.9691-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test: Fix skipping branch stack sampling test

2022-11-16T09:03:59+00:00

[ Upstream commit 20ebc4a649b82e6ad892684c76ea1e8dd786d336 ] Commit f4a2aade6809c657 ("perf tests powerpc: Fix branch stack sampling test to include sanity check for branch filter") added a skip if certain branch options aren't available. But the change added both -b (--branch-any) and --branch-filter options at the same time, which will always result in a failure on any platform because the arguments can't be used together. Fix this by removing -b (--branch-any) and leaving --branch-filter which already specifies 'any'. Also add warning messages to the test and perf tool. Output on x86 before this fix: $ sudo ./perf test branch 108: Check branch stack sampling : Skip After: $ sudo ./perf test branch 108: Check branch stack sampling : Ok Fixes: f4a2aade6809c657 ("perf tests powerpc: Fix branch stack sampling test to include sanity check for branch filter") Signed-off-by: James Clark Tested-by: Athira Jajeev Cc: Alexander Shishkin Cc: Anshuman.Khandual@arm.com Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kajol Jain Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20221028121913.745307-1-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf tests mmap-basic: Remove unused variable to address clang 15 warning

2022-09-29T18:08:51+00:00

A clang 15 build reveal several unused-but-set variables, removing the 'foo' variable in tests/mmap-basic.o object to address one of those cases. Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Ian Rogers Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20220929140514.226807-2-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tests record: Fail the test if the 'errs' counter is not zero

2022-09-29T12:53:15+00:00

We were just checking for the 'err' variable, when we should really see if there was some of the many checked errors that don't stop the test right away. Detected with clang 15.0.0: 44 75.23 fedora:37 : FAIL clang version 15.0.0 (Fedora 15.0.0-2.fc37) tests/perf-record.c:68:16: error: variable 'errs' set but not used [-Werror,-Wunused-but-set-variable] int err = -1, errs = 0, i, wakeups = 0; ^ 1 error generated. The patch introducing this 'perf test' entry had that check: + return (err < 0 || errs > 0) ? -1 : 0; But at some point we lost that: - return (err < 0 || errs > 0) ? -1 : 0; + if (err == -EACCES) + return TEST_SKIP; + if (err < 0) + return TEST_FAIL; + return TEST_OK Put it back. Fixes: 2cf88f4614c996e5 ("perf test: Use skip in PERF_RECORD_*") Acked-by: Ian Rogers Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/YzR0n5QhsH9VyYB0@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Fix test case 87 ("perf record tests") for hybrid systems

2022-09-29T12:52:56+00:00

The test case 87 ("perf record tests") failed on hybrid systems,the event "cpu/br_inst_retired.near_call/p" is only for non-hybrid system. Correct the test event to support both non-hybrid and hybrid systems. Before: # ./perf test 87 87: perf record tests : FAILED! After: # ./perf test 87 87: perf record tests : Ok Fixes: 24f378e66021f559 ("perf test: Add basic perf record tests") Reviewed-by: Kan Liang Signed-off-by: Xing Zhengjun Acked-by: Ian Rogers Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20220927051513.3768717-1-zhengjun.xing@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests vmlinux-kallsyms: Update is_ignored_symbol function to match the kernel ignored list

2022-09-28T14:11:33+00:00

The testcase “vmlinux-kallsyms.c” fails in powerpc. vmlinux symtab matches kallsyms: FAILED! This test look at the symbols in the vmlinux DSO and check if we find all of them in the kallsyms dso. But from the powerpc logs , observed that the failure happens for: ERR : 0xc0000000000fe9c8: .Lmfspr_table not on kallsyms ERR : 0xc0000000001009c8: .Lmtspr_table not on kallsyms These are labels ( with .L) in the source code and has to be ignored. Reference code with .Lmtspr_table: arch/powerpc/xmon/spr_access.S The testcases invokes is_ignored_symbol() function to ignore hidden symbols in the dso like local symbols. This function is adapted from is_ignored_symbol() kernel function in code: scripts/kallsyms.c . The kernel function got some updates which is not reflected in the testcase function and the new updates also handles ignoring "labels". Below is the changes that went in the kernel function. /* Symbol names that begin with the following are ignored.*/ static const char * const ignored_prefixes[] = { "$", /* local symbols for ARM, MIPS, etc. */ - ".LASANPC", /* s390 kasan local symbols */ + ".L", /* local labels, .LBB,.Ltmpxxx,.L__unnamed_xx,.LASANPC, etc. */ "__crc_", /* modversions */ "__efistub_", /* arm64 EFI stub namespace */ - "__kvm_nvhe_", /* arm64 non-VHE KVM namespace */ + "__kvm_nvhe_$", /* arm64 local symbols in non-VHE KVM namespace */ + "__kvm_nvhe_.L", /* arm64 local symbols in non-VHE KVM namespace */ "__AArch64ADRPThunk_", /* arm64 lld */ "__ARMV5PILongThunk_", /* arm lld */ "__ARMV7PILongThunk_", This change is part of below commits and will handle the symbols with “.L” commit d4c858643263 ("kallsyms: ignore all local labels prefixed by '.L'") commit 6ccf9cb557bd ("KVM: arm64: Symbolize the nVHE HYP addresses") Update the testcase function to include the new changes. Reported-by: Disha Goel Signed-off-by: Athira Jajeev Cc: Jiri Olsa Cc: Kajol Jain Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nageswara R Sastry Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20220928045218.37322-1-atrajeev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests powerpc: Fix branch stack sampling test to include sanity check for branch filter

2022-09-26T13:24:31+00:00

Commit b55878c90ab92a24 ("perf test: Add test for branch stack sampling") added test for branch stack sampling. There is a sanity check in the beginning to skip the test if the hardware doesn't support branch stack sampling. Snippet <<>> skip the test if the hardware doesn't support branch stack sampling perf record -b -o- -B true > /dev/null 2>&1 || exit 2 <<>> But the testcase also uses branch sample types: save_type, any. if any platform doesn't support the branch filters used in the test, the testcase will fail. In powerpc, currently mutliple branch filters are not supported and hence this test fails in powerpc. Fix the sanity check to look at the support for branch filters used in this test before proceeding with the test. Fixes: b55878c90ab92a24 ("perf test: Add test for branch stack sampling") Reported-by: Disha Goel Reviewed-by: Kajol Jain Signed-off-by: Athira Jajeev Cc: German Gomez Cc: Jiri Olsa Cc: linuxppc-dev@lists.ozlabs.org Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nageswara R Sastry Link: https://lore.kernel.org/r/20220921145255.20972-2-atrajeev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Skip wp modify test on old kernels

2022-09-21T19:07:32+00:00

It uses PERF_EVENT_IOC_MODIFY_ATTRIBUTES ioctl. The kernel would return ENOTTY if it's not supported. Update the skip reason in that case. Committer notes: On s/390 the args aren't used, so need to be marked __maybe_unused. Reviewed-by: Ravi Bangoria Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Ravi Bangoria Link: https://lore.kernel.org/r/20220914183338.546357-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add a new test for perf stat cgroup BPF counter

2022-09-21T13:30:55+00:00

$ sudo ./perf test -v each-cgroup 96: perf stat --bpf-counters --for-each-cgroup test : --- start --- test child forked, pid 79600 test child finished with 0 ---- end ---- perf stat --bpf-counters --for-each-cgroup test: Ok Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Song Liu Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20220916184132.1161506-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Stat test for repeat with a weak group

2022-08-27T14:55:17+00:00

Breaking a weak group requires multiple passes of an evlist, with multiple runs this can introduce bugs ultimately leading to segfaults. Add a test to cover this. Signed-off-by: Ian Rogers Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: https://lore.kernel.org/r/20220822213352.75721-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo