kernel/git/stable/linux.git/tools/perf/tests, branch linux-6.12.y

perf test: Don't signal all processes on system when interrupting tests

2026-09-14T11:32:59+00:00

[ Upstream commit f54cd8f43f55c0274c5b51509aff39675639c2e1 ] This signal handler loops over all tests on ctrl-C, but it's active while the test list is being constructed. process.pid is 0, then -1, then finally set to the child pid on fork. If the Ctrl-C is received during this point a kill(-1, SIGINT) can be sent which affects all processes. Make sure the child has forked first before forwarding the signal. This can be reproduced with ctrl-C immediately after launching perf test which terminates the ssh connection. Fixes: 553d5efeb341 ("perf test: Add a signal handler to kill forked child processes") Signed-off-by: James Clark Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20241129151948.3199732-1-james.clark@linaro.org Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin

perf test: Fix skiplist leak in cmd_test

2026-09-14T11:32:38+00:00

[ Upstream commit 44e82c4d2ff37f073946b594840fd549ab6b9fb8 ] Fix a memory leak in cmd_test() where skiplist was not freed on exit paths. Assisted-by: Antigravity:gemini-3.1-pro Fixes: 2ae828786c65 ("perf test: Allow skipping tests") Signed-off-by: Ian Rogers Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin

perf test: Support dynamic test suites with setup callback and private data

2026-09-14T11:32:38+00:00

[ Upstream commit 8c8d61c38d8e1755a4325f8acb396137bbd5371a ] Add void *priv to struct test_case to allow passing per-test context. Add int (*setup)(struct test_suite *) to struct test_suite to allow dynamic generation of test cases. Update build_suites() to invoke the setup callback for each suite if present, ensuring dynamic cases are available before listing or running. Assisted-by: Gemini-CLI:Google Gemini 3 Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin

perf test: Send list output to stdout rather than stderr

2026-09-14T11:32:38+00:00

[ Upstream commit 2b7b78efc8c91430fd81a07d8fb4e0a89456aff8 ] Follow the workload listing in using stdout rather than stderr. Correct the numbering of sub-tests to be 1.1 rather than 1:1. Signed-off-by: Ian Rogers Reviewed-by: Namhyung Kim Cc: James Clark Link: https://lore.kernel.org/r/20250110045736.598281-3-irogers@google.com Signed-off-by: Namhyung Kim Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin

perf test: Rename functions and variables for better clarity

2026-09-14T11:32:38+00:00

[ Upstream commit 2e47c503deeeadc1bfa66ece7f75e298a814e94f ] The relationship between subtests and test cases is somewhat confusing, so let's do away with the notion of sub-tests and switch to just working with some number of test cases. Add a test_suite__for_each_test_case as in many cases, except the special one test case situation, the iteration can just be on all test cases. Switch variable names to be more intention revealing of what their value is. This work was motivated by discussion with Kan where it was noted the code is becoming overly indented: https://lore.kernel.org/lkml/20241109160219.49976-1-irogers@google.com/ Unifying more of the sub-test/no-sub-tests avoids one level of indentation in a number of places. Signed-off-by: Ian Rogers Reviewed-by: Namhyung Kim Cc: James Clark Link: https://lore.kernel.org/r/20250110045736.598281-2-irogers@google.com Signed-off-by: Namhyung Kim Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin

perf test: Sort tests placing exclusive tests last

2026-09-14T11:32:38+00:00

[ Upstream commit 7449a4d674cc14f8e689cecf7354748706d00f30 ] This allows a uniform test numbering even though two passes are used to execute them. Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: James Clark Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-11-irogers@google.com Signed-off-by: Namhyung Kim Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin

perf test: Add a signal handler to kill forked child processes

2026-09-14T11:32:38+00:00

[ Upstream commit 553d5efeb341f2f814f937e0658ed7d22f625662 ] If the `perf test` process is killed the child tests continue running and may run indefinitely. Propagate SIGINT (ctrl-C) and SIGTERM (kill) signals to the running child processes so that they terminate when the parent is killed. Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: James Clark Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-10-irogers@google.com Signed-off-by: Namhyung Kim Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin

perf test: Run parallel tests in two passes

2026-09-14T11:32:38+00:00

[ Upstream commit 79e72f384d733f78cb07a9649a5ea52b78898a30 ] In pass 1 run all tests that succeed when run in parallel. In pass 2 sequentially run all remaining tests that are flagged as "exclusive". Sequential and dont_fork tests keep to run in pass 1. Read the exclusive flag from the shell test descriptions, but remove from display to avoid >100 characters. Add error handling to finish tests if starting a later test fails. Mark the task-exit test as exclusive due to issues reported-by James Clark. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-8-irogers@google.com Signed-off-by: Namhyung Kim Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin

perf test: Add a signal handler around running a test

2026-09-14T11:32:38+00:00

[ Upstream commit a6fffc60940a903ebcd70d44f047277ba5188225 ] Add a signal handler around running a test. If a signal occurs during the test a siglongjmp unwinds the stack and output is flushed. The global run_test_jmp_buf is either unique per forked child or not shared during sequential execution. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-7-irogers@google.com Signed-off-by: Namhyung Kim Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin

perf test: Display number of active running tests

2026-09-14T11:32:38+00:00

[ Upstream commit 0e036dcad4e62b89f8df3e41402babb9345521af ] Before polling or sleeping to wait for a test to complete, print out ": Running ( active)" where the number of active tests is determined by iterating over the tests and seeing which return false for check_if_command_finished. The line erasing and printing out only occur if the number of runnings tests changes to avoid the line flickering excessively. Knowing tests are running allows a user to know a test is running and in parallel mode how many of the tests are waiting to complete. If color mode is disabled then avoid displaying the "Running" message as deleting the line isn't reliable. Tested-by: James Clark Signed-off-by: Ian Rogers Cc: Colin Ian King Cc: Howard Chu Cc: Weilin Wang Cc: Ilya Leoshkevich Cc: Thomas Richter Cc: Andi Kleen Cc: Dapeng Mi Cc: Athira Jajeev Cc: Michael Petlan Cc: Veronika Molnarova Link: https://lore.kernel.org/r/20241025192109.132482-3-irogers@google.com Signed-off-by: Namhyung Kim Stable-dep-of: 44e82c4d2ff3 ("perf test: Fix skiplist leak in cmd_test") Signed-off-by: Sasha Levin