kernel/linux.git/tools/perf/tests/tests.h, branch linux-5.11.y

perf test: Implement skip_reason callback for watchpoint tests

2020-11-04T12:42:40+00:00

Currently reason for skipping the read only watchpoint test is only seen when running in verbose mode: $ perf test watchpoint 23: Watchpoint : 23.1: Read Only Watchpoint : Skip 23.2: Write Only Watchpoint : Ok 23.3: Read / Write Watchpoint : Ok 23.4: Modify Watchpoint : Ok $ perf test -v watchpoint 23: Watchpoint : 23.1: Read Only Watchpoint : --- start --- test child forked, pid 60204 Hardware does not support read only watchpoints. test child finished with -2 Implement skip_reason callback for the watchpoint tests, so that it's easy to see reason why the test is skipped: $ perf test watchpoint 23: Watchpoint : 23.1: Read Only Watchpoint : Skip (missing hardware support) 23.2: Write Only Watchpoint : Ok 23.3: Read / Write Watchpoint : Ok 23.4: Modify Watchpoint : Ok Signed-off-by: Tommi Rantala Tested-by: Arnaldo Carvalho de Melo Acked-by: Namhyung Kim Link: https://lore.kernel.org/r/20201016131650.72476-1-tommi.t.rantala@nokia.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests tsc: Add checking helper is_supported()

2020-11-04T12:42:40+00:00

So far tsc is enabled on x86_64, i386 and Arm64 architectures, add checking helper to skip this testing for other architectures. Signed-off-by: Leo Yan Acked-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20201019100236.23675-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf tests tsc: Make tsc testing as a common testing

2020-11-04T12:42:40+00:00

x86 arch provides the testing for conversion between tsc and perf time, the testing is located in x86 arch folder. Move this testing out from x86 arch folder and place it into the common testing folder, so allows to execute tsc testing on other architectures (e.g. Arm64). This patch removes the inclusion of "arch-tests.h" from the testing code, this can avoid building failure if any arch has no this header file. Committer testing: $ perf test -v tsc Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc 70: Convert perf time to TSC : --- start --- test child forked, pid 4032834 mmap size 528384B 1st event perf time 165409788843605 tsc 336578703793868 rdtsc time 165409788854986 tsc 336578703837038 2nd event perf time 165409788855487 tsc 336578703838935 test child finished with 0 ---- end ---- Convert perf time to TSC: Ok $ Signed-off-by: Leo Yan Acked-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20201019100236.23675-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add expand cgroup event test

2020-09-28T12:21:05+00:00

It'll expand given events for cgroups A, B and C. $ perf test -v expansion 69: Event expansion for cgroups : --- start --- test child forked, pid 983140 metric expr 1 / IPC for CPI metric expr instructions / cycles for IPC found event instructions found event cycles adding {instructions,cycles}:W copying metric event for cgroup 'A': instructions (idx=0) copying metric event for cgroup 'B': instructions (idx=0) copying metric event for cgroup 'C': instructions (idx=0) test child finished with 0 ---- end ---- Event expansion for cgroups: Ok Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: John Garry Cc: Mark Rutland Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20200924124455.336326-6-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add test for PE binary format support

2020-09-04T17:38:15+00:00

This adds a precompiled file in PE binary format, with split debug file, and tries to read its build_id and .gnu_debuglink sections, as well as looking up the main symbol from the debug file. This should succeed if libbfd is supported. Committer testing: $ perf test "PE file support" 68: PE file support : Ok $ Signed-off-by: Remi Bernon Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Jacek Caban Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20200821165238.1340315-3-rbernon@codeweavers.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add parse metric test for ipc metric

2020-06-22T19:28:09+00:00

Adding new test that process metrics code and checks the expected results. Starting with easy ipc metric. Committer testing: # perf test "Parse and process metrics" 67: Parse and process metrics : Ok # # perf test -v "Parse and process metrics" 67: Parse and process metrics : --- start --- test child forked, pid 103402 metric expr inst_retired.any / cpu_clk_unhalted.thread for IPC found event inst_retired.any found event cpu_clk_unhalted.thread adding {inst_retired.any,cpu_clk_unhalted.thread}:W test child finished with 0 ---- end ---- Parse and process metrics: Ok # Had to fix it to initialize that 'struct value' array sentinel with a named initializer to fix the build with some versions of clang: tests/parse-metric.c:135:7: error: missing field 'val' initializer [-Werror,-Wmissing-field-initializers] { 0 }, Signed-off-by: Jiri Olsa Acked-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Andi Kleen Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20200602214741.1218986-13-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add optional support for libpfm4

2020-05-29T19:51:38+00:00

This patch links perf with the libpfm4 library if it is available and LIBPFM4 is passed to the build. The libpfm4 library contains hardware event tables for all processors supported by perf_events. It is a helper library that helps convert from a symbolic event name to the event encoding required by the underlying kernel interface. This library is open-source and available from: http://perfmon2.sf.net. With this patch, it is possible to specify full hardware events by name. Hardware filters are also supported. Events must be specified via the --pfm-events and not -e option. Both options are active at the same time and it is possible to mix and match: $ perf stat --pfm-events inst_retired:any_p:c=1:i -e cycles .... One needs to explicitely ask for its inclusion by using the LIBPFM4 make command line option, ie its opt-in rather than opt-out of feature detection and build support. Signed-off-by: Stephane Eranian Reviewed-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Alexey Budankov Cc: Andi Kleen Cc: Andrii Nakryiko Cc: Daniel Borkmann Cc: Florian Fainelli Cc: Greg Kroah-Hartman Cc: Igor Lubashev Cc: Jin Yao Cc: Jiri Olsa Cc: Jiwei Sun Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Cc: yuzhoujian Link: http://lore.kernel.org/lkml/20200505182943.218248-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add test for the java demangler

2020-05-28T13:03:28+00:00

Split from a larger patch that was also fixing a problem with the java demangler, so, before applying that patch we see: $ perf test java 65: Demangle Java : FAILED! $ perf test -v java 65: Demangle Java : --- start --- test child forked, pid 307264 FAILED: Ljava/lang/StringLatin1;equals([B[B)Z: bool class java.lang.StringLatin1.equals(byte[], byte[]) != boolean java.lang.StringLatin1.equals(byte[], byte[]) FAILED: Ljava/util/zip/ZipUtils;CENSIZ([BI)J: long class java.util.zip.ZipUtils.CENSIZ(byte[], int) != long java.util.zip.ZipUtils.CENSIZ(byte[], int) FAILED: Ljava/util/regex/Pattern$BmpCharProperty;match(Ljava/util/regex/Matcher;ILjava/lang/CharSequence;)Z: bool class java.util.regex.Pattern$BmpCharProperty.match(class java.util.regex.Matcher., int, class java.lang., charhar, shortequence) != boolean java.util.regex.Pattern$BmpCharProperty.match(java.util.regex.Matcher, int, java.lang.CharSequence) FAILED: Ljava/lang/AbstractStringBuilder;appendChars(Ljava/lang/String;II)V: void class java.lang.AbstractStringBuilder.appendChars(class java.lang., shorttring., int, int) != void java.lang.AbstractStringBuilder.appendChars(java.lang.String, int, int) FAILED: Ljava/lang/Object;()V: void class java.lang.Object() != void java.lang.Object() test child finished with -1 ---- end ---- Demangle Java: FAILED! $ Next patch should fix this. Signed-off-by: Nick Gasson Reviewed-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Tested-by: Ian Rogers Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20200427061520.24905-4-nick.gasson@arm.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Improve pmu event metric testing

2020-05-28T13:03:26+00:00

Break pmu-events test into 2 and add a test to verify that all pmu metric expressions simply parse. Try to parse all metric ids/events, skip/warn if metrics for the current architecture fail to parse. To support warning for a skip, and an ability for a subtest to describe why it skips. Tested on power9, skylakex, haswell, broadwell, westmere, sandybridge and ivybridge. May skip/warn on other architectures if metrics are invalid. In particular s390 is untested, but its expressions are trivial. The untested architectures with expressions are power8, cascadelakex, tremontx, skylake, jaketown, ivytown and variants of haswell and broadwell. v3. addresses review comments from John Garry , Jiri Olsa and Arnaldo Carvalho de Melo . v2. changes the commit message as event parsing errors no longer cause the test to fail. Committer notes: Check the return value of strtod() to fix the build in systems where that function is declared with attribute warn_unused_result. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jin Yao Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Namhyung Kim Cc: Paul Clarke Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20200513212933.41273-1-irogers@google.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo

perf test: Provide a subtest callback to ask for the reason for skipping a subtest

2020-05-28T13:03:26+00:00

Now subtests can inform why a test was skipped. The upcoming patch improvint PMU event metric testing will use it. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Jin Yao Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Namhyung Kim Cc: Paul Clarke Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20200513212933.41273-1-irogers@google.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo