kernel/linux.git/tools/perf/tests/shell/test_intel_pt.sh, branch v6.12.80

tests/shell: Fix shellcheck SC1090 to handle the location of sourced files

2023-09-27T04:47:12+00:00

Running shellcheck on some of the shell scripts throws below error: In tests/shell/coresight/unroll_loop_thread_10.sh line 8: . "$(dirname $0)"/../lib/coresight.sh ^-- SC1090: Can't follow non-constant source. Use a directive to specify location. This happens on shellcheck version "0.6.0". Fix shellcheck warning for SC1090 using "shellcheck source="i option to mention the location of sourced files. Signed-off-by: Athira Rajeev Tested-by: Ian Rogers Reviewed-by: Kajol Jain Cc: maddy@linux.ibm.com Cc: disgoel@linux.vnet.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Link: https://lore.kernel.org/r/20230907171540.36736-2-atrajeev@linux.vnet.ibm.com Signed-off-by: Namhyung Kim

perf test test_intel_pt.sh: Test sample mode with event with PMU name

2023-05-10T17:19:20+00:00

br_misp_retired.all_branches is supported on processors that support Intel PT, so use it to test sample mode with an event that has been given a PMU name. Please note, the test fails prior to the fix "perf parse-events: Do not break up AUX event group". Signed-off-by: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20230508093952.27482-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: Add pipe mode test to the Intel PT test suite

2023-02-02T00:31:15+00:00

The test_pipe() function will check perf report and perf inject with pipe input. Reviewed-by: Adrian Hunter Signed-off-by: Namhyung Kim Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Leo Yan Cc: Peter Zijlstra Cc: Stephane Eranian Link: https://lore.kernel.org/r/20230131023350.1903992-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: Do not fail Intel-PT misc test w/o libpython

2022-10-25T20:40:48+00:00

The virtual LBR test uses a python script to check the max size of branch stack in the Intel-PT generated LBR. But it didn't check whether python scripting is available (as it's optional). Let's skip the test if the python support is not available. Fixes: f77811a0f62577d2 ("perf test: test_intel_pt.sh: Add 9 tests") Reviewed-by: Adrian Hunter Signed-off-by: Namhyung Kim Acked-by: Ian Rogers Cc: Ammy Yi Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20221021181055.60183-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test: test_intel_pt.sh: Add 9 tests

2022-10-15T13:13:16+00:00

Add tests: Test with MTC and TSC disabled Test with branches disabled Test with/without CYC Test recording with sample mode Test with kernel trace Test virtual LBR Test power events Test with TNT packets disabled Test with event_trace These tests mostly check that perf record works with the corresponding Intel PT config terms, sometimes also checking that certain packets do or do not appear in the resulting trace as appropriate. The "Test virtual LBR" is slightly trickier, using a Python script to check that branch stacks are actually synthesized. Signed-off-by: Ammy Yi Tested-by: Arnaldo Carvalho de Melo Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20221014170905.64069-8-adrian.hunter@intel.com Signed-off-by: Adrian Hunter Signed-off-by: Arnaldo Carvalho de Melo

perf test: test_intel_pt.sh: Add jitdump test

2022-10-15T13:13:16+00:00

Add a test for decoding self-modifying code using a jitdump file. The test creates a workload that uses self-modifying code and generates its own jitdump file. The result is processed with perf inject --jit and checked for decoding errors. Note the test will fail without patch "perf inject: Fix GEN_ELF_TEXT_OFFSET for jit" applied. Signed-off-by: Adrian Hunter Tested-by: Arnaldo Carvalho de Melo Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20221014170905.64069-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: test_intel_pt.sh: Tidy some alignment

2022-10-15T13:13:16+00:00

Tidy alignment of test function lines to make them more readable. Signed-off-by: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20221014170905.64069-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: test_intel_pt.sh: Print a message when skipping kernel tracing

2022-10-15T13:13:16+00:00

Messages display with the perf test -v option. Add a message to show when skipping a test because the user cannot do kernel tracing. Signed-off-by: Adrian Hunter Tested-by: Arnaldo Carvalho de Melo Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20221014170905.64069-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: test_intel_pt.sh: Tidy some perf record options

2022-10-15T13:13:16+00:00

When not decoding, the options "-B -N --no-bpf-event" speed up perf record. Make a common function for them. Signed-off-by: Adrian Hunter Tested-by: Arnaldo Carvalho de Melo Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20221014170905.64069-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf test: test_intel_pt.sh: Fix return checking again

2022-10-15T13:13:16+00:00

count_result() does not always reset ret=0 which means the value can spill into the next test result. Fix by explicitly setting it to zero between tests. Committer testing: # perf test "Miscellaneous Intel PT testing" 110: Miscellaneous Intel PT testing : Ok # Tested as well with: # perf test -v "Miscellaneous Intel PT testing" Fixes: fd9b45e39cfaf885 ("perf test: test_intel_pt.sh: Fix return checking") Tested-by: Arnaldo Carvalho de Melo Signed-off-by: Adrian Hunter Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20221014170905.64069-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo