kernel/linux.git/tools/tracing/rtla/tests/scripts, branch v7.2-rc1

rtla/tests: Fix pgrep filter in get_workload_pids.sh

2026-06-17T14:26:44+00:00

Multiple runtime tests in RTLA rely on the get_workload_pids() shell helper function to get the PIDs of both kernel and user workloads. On some systems (e.g. Fedora 43), pgrep matches kernel thread names including square brackets: "[osnoise/0]"; on other systems (e.g. RHEL 9.8), brackets are not included: "osnoise/0". Accept both as valid workload PIDs rather that just the non-bracket form to make the tests work on all systems. Fixes: a98dad63cda3 ("rtla/tests: Add runtime test for -k and -u options") Reported-by: Crystal Wood Link: https://lore.kernel.org/r/20260604140547.3616495-1-tglozar@redhat.com Signed-off-by: Tomas Glozar

rtla/tests: Add runtime tests for -C/--cgroup

2026-05-18T09:00:52+00:00

Add a new script check-cgroup-match.sh that retrieves the cgroup of the main rtla process and compares it to the cgroup of the rtla workload threads. Add a new test based on this script, for both osnoise and timerlat tools, testing the variant of -C without argument (which sets the cgroup of the workload to the cgroup of the rtla main process). Note that this has to be tested in kernel mode to be significant for timerlat tool, as user workloads inherit the parent rtla process cgroup even without the option. Reviewed-by: Wander Lairson Costa Link: https://lore.kernel.org/r/20260423130558.882022-10-tglozar@redhat.com Signed-off-by: Tomas Glozar

rtla/tests: Add runtime test for -k and -u options

2026-05-18T09:00:52+00:00

Add runtime test for rtla-timerlat's -k/--kernel-threads and -u/--user-threads options using get_workload_pids.sh to check whether the appropriate threads are being created. The tests are implemented for both top and hist. Additionally, all tests related to timerlat threads are moved to a separate section in the test files. The latter is also done for rtla-osnoise tests. Reviewed-by: Wander Lairson Costa Link: https://lore.kernel.org/r/20260423130558.882022-9-tglozar@redhat.com Signed-off-by: Tomas Glozar

rtla/tests: Add runtime test for -H/--house-keeping

2026-05-18T09:00:52+00:00

Add a runtime test for -H/--house-keeping option for both osnoise and timerlat tools, with affinity checking similar to what is done for -c/--cpus. Reviewed-by: Wander Lairson Costa Link: https://lore.kernel.org/r/20260423130558.882022-8-tglozar@redhat.com Signed-off-by: Tomas Glozar

rtla/tests: Check -c/--cpus thread affinity

2026-05-18T09:00:51+00:00

RTLA runtime tests verify the -c/--cpus options, but do not check whether the correct affinity is actually applied. Add a script named check-cpus.sh that retrieves the affinity of all workload threads and use it to check the -c/--cpus option for both osnoise and timerlat tools. Also add missing -c/--cpus test for osnoise. Reviewed-by: Wander Lairson Costa Link: https://lore.kernel.org/r/20260423130558.882022-4-tglozar@redhat.com Signed-off-by: Tomas Glozar

rtla/tests: Add get_workload_pids() helper

2026-05-18T09:00:51+00:00

RTLA runtime tests that check workload processes (currently the test case "verify -P/--priority" of timerlat.t and "verify the --priority/-P param" of osnoise.t) use "pgrep timerlatu/" or "pgrep osnoise/" respectively to identify the workload. Make them more robust by adding a get_workload_pids() helper that finds the main rtla process and returns the PIDs of all siblings other than the test script itself, plus all child processes of kthreadd that have the osnoise/timerlat kthread pattern comm. This filters out any spurious processes not related to the running test that happen to have "timerlatu/" or "osnoise/" in their command, for example, a user grepping the same names at the time of the running of the test. Reviewed-by: Wander Lairson Costa Link: https://lore.kernel.org/r/20260423130558.882022-3-tglozar@redhat.com Signed-off-by: Tomas Glozar

rtla/tests: Test timerlat -P option using actions

2025-07-28T14:22:39+00:00

The -P option is used to set priority of osnoise and timerlat threads. Extend the test for -P with --on-threshold calling a script that looks for running timerlat threads and checks if their priority is set correctly. As --on-threshold is only supported by timerlat at the moment, this is only implemented there so far. Cc: John Kacur Cc: Luis Goncalves Cc: Chang Yin Cc: Costa Shulyupin Link: https://lore.kernel.org/20250725133817.59237-3-tglozar@redhat.com Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google)