kernel/linux.git/tools/perf/tests/workloads, branch v7.0-rc7

perf tests workload: Formatting for code_with_type.rs

2026-02-09T18:36:00+00:00

One part of the rust code for code_with_type workload wasn't properly formatted. Pass it through rustfmt to fix that. Closes: https://lore.kernel.org/oe-kbuild-all/202602091357.oyRv6hgQ-lkp@intel.com/ Reported-by: kernel test robot Reviewed-by: Ian Rogers Signed-off-by: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Miguel Ojeda Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf test workload: Add code_with_type test workload

2026-02-08T22:16:24+00:00

The purpose of the workload is to gather samples of rust runtime. To achieve that it has a dummy rust library linked with it. Per recommendations for such scenarios [1], the rust library is statically linked. An example: $ perf record perf test -w code_with_type [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.160 MB perf.data (4074 samples) ] $ perf report --stdio --dso perf -s srcfile,srcline 45.16% ub_checks.rs ub_checks.rs:72 6.72% code_with_type.rs code_with_type.rs:15 6.64% range.rs range.rs:767 4.26% code_with_type.rs code_with_type.rs:21 4.23% range.rs range.rs:0 3.99% code_with_type.rs code_with_type.rs:16 [...] [1]: https://doc.rust-lang.org/reference/linkage.html#mixed-rust-and-foreign-codebases Signed-off-by: Dmitrii Dolgov <9erthalion6@gmail.com> Tested-by: Arnaldo Carvalho de Melo Cc: Ian Rogers Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo

perf test workload: Add inlineloop test workload

2026-01-12T19:11:15+00:00

The purpose of this workload is to gather samples in an inlined function. This can be used to test whether inlined addr2line works correctly. Committer testing: $ perf record perf test -w inlineloop 1 [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.161 MB perf.data (4005 samples) ] $ perf report --stdio --dso perf -s srcfile,srcline # # Total Lost Samples: 0 # # Samples: 4K of event 'cpu/cycles/Pu' # Event count (approx.): 5535180842 # # Overhead Source File Source:Line # ........ ............ ............... # 99.04% inlineloop.c inlineloop.c:21 0.46% inlineloop.c inlineloop.c:20 # $ Reviewed-by: James Clark Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Howard Chu Cc: Ingo Molnar Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephen Brennan Cc: Tony Jones Signed-off-by: Arnaldo Carvalho de Melo

perf test workload: Add thread count argument to thloop

2025-10-28T23:59:58+00:00

Allow the number of threads for the thloop workload to be increased beyond the normal 2. Add error checking to the parsed time and thread count values. Signed-off-by: Ian Rogers Acked-by: Arnaldo Carvalho de Melo Signed-off-by: Namhyung Kim

perf test: Extend branch stack sampling test for Arm64 BRBE

2025-10-01T18:31:49+00:00

BRBE emits IRQ and ERET branches for branching and returning from trapped instructions. Add a test that loops on a trapped instruction (MRS - Read special register) for this. Extend the expected 'any_call' branches to include FAULT_DATA and FAULT_INST as these are emitted by BRBE. Reviewed-by: Ian Rogers Co-developed-by: German Gomez Signed-off-by: German Gomez Signed-off-by: James Clark Cc: Adam Young Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Anshuman Khandual Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Rob Herring Cc: Will Deacon Signed-off-by: Arnaldo Carvalho de Melo

perf test: Name the noploop process

2025-07-01T22:37:22+00:00

Name the noploop process "perf-noploop" so that tests can easily check for its existence. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250628012302.1242532-1-irogers@google.com Signed-off-by: Namhyung Kim

perf tests: Fix data symbol test with LTO builds

2025-03-07T22:07:07+00:00

With LTO builds, although regular builds could also see this as all the code is in one file, the datasym workload can realize the buf1.reserved data is never accessed. The compiler moves the variable to bss and only keeps the data1 and data2 parts as separate variables. This causes the symbol check to fail in the test. Make the variable volatile to disable the more aggressive optimization. Rename the variable to make which buf1 in perf is being referred to. Before: $ perf test -vv "data symbol" 126: Test data symbol: --- start --- test child forked, pid 299808 perf does not have symbol 'buf1' perf is missing symbols - skipping test ---- end(-2) ---- 126: Test data symbol : Skip $ nm perf|grep buf1 0000000000a5fa40 b buf1.0 0000000000a5fa48 b buf1.1 After: $ nm perf|grep buf1 0000000000a53a00 d buf1 $ perf test -vv "data symbol"126: Test data symbol: --- start --- test child forked, pid 302166 a53a00-a53a39 l buf1 perf does have symbol 'buf1' Recording workload... Waiting for "perf record has started" message OK Cleaning up files... ---- end(0) ---- 126: Test data symbol : Ok Fixes: 3dfc01fe9d12 ("perf test: Add 'datasym' test workload") Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250226230109.314580-1-irogers@google.com Signed-off-by: Namhyung Kim

perf test: Add timeout to datasym workload

2025-03-05T17:17:01+00:00

Unlike others it has an infinite loop that make it annoying to call. Make it finish after 1 second and handle command-line argument to change the setting. Reviewed-by: Leo Yan Tested-by: Thomas Richter Tested-by: Thomas Falcon Cc: Thomas Richter Cc: Leo Yan Link: https://lore.kernel.org/r/20250304022837.1877845-6-namhyung@kernel.org Signed-off-by: Namhyung Kim

perf test: Remove duplicate word

2024-12-12T18:55:16+00:00

- Remove duplicate word, 'the'. Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Günther Noack Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Mickaël Salaün Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ruffalo Lavoisier Cc: linux-security-module@vger.kernel.org Link: https://lore.kernel.org/r/20241120043503.80530-1-RuffaloLavoisier@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add landlock workload

2024-07-31T19:12:46+00:00

We'll use it to add a regression test for the BTF augmentation of enum arguments for tracepoints in 'perf trace': root@x1:~# perf trace -e landlock_add_rule perf test -w landlock 0.000 ( 0.009 ms): perf/747160 landlock_add_rule(ruleset_fd: 11, rule_type: LANDLOCK_RULE_PATH_BENEATH, rule_attr: 0x7ffd8e258594, flags: 45) = -1 EINVAL (Invalid argument) 0.011 ( 0.002 ms): perf/747160 landlock_add_rule(ruleset_fd: 11, rule_type: LANDLOCK_RULE_NET_PORT, rule_attr: 0x7ffd8e2585a0, flags: 45) = -1 EINVAL (Invalid argument) root@x1:~# Committer notes: It was agreed on the discussion (see Link below) to shorten then name of the workload from 'landlock_add_rule' to 'landlock', and I moved it to a separate patch. Also, to address a build failure from Namhyung, I stopped loading linux/landlock.h and instead added the used defines, enums and types to make this build in older systems. All we want is to emit the syscall and intercept it. Suggested-by: Arnaldo Carvalho de Melo Signed-off-by: Howard Chu Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/CAH0uvohaypdTV6Z7O5QSK+va_qnhZ6BP6oSJ89s1c1E0CjgxDA@mail.gmail.com Link: https://lore.kernel.org/r/20240624181345.124764-1-howardchu95@gmail.com Link: https://lore.kernel.org/r/20240624181345.124764-6-howardchu95@gmail.com Signed-off-by: Arnaldo Carvalho de Melo