Most of the tests in kselftest rely on external tools and libraries to run, which means that in order to run the tests effectively we need to have all the dependencies installed first.
But unfortunately, there is currently no way to know in advance what tools and libraries the tests in kselftest depend on, and can only be known when a test run fails.
For example after running the alsa subsystem test I realized I needed to install the libasound-dev package.
This is inefficient for the test of subsystems that require a long time to run.
For example, the net subsystem test, which takes more than an hour to run a complete test.
I can only know that I need to install numactl, libnuma-dev, ethtool, mausezahn, netsniff-ng, ndisc6, netperf, and other tools after carefully reviewing the results of the tests.
I think we should add dependencies information to the Makefile for each subsystem test, either as a comment or as an output target of the Makefile, it would save a lot of time for the people running the tests.
I can do this part of the work.
Welcome to discuss!
Juntong Deng
On 23/09/25 06:25PM, Juntong Deng wrote:
Most of the tests in kselftest rely on external tools and libraries to run, which means that in order to run the tests effectively we need to have all the dependencies installed first.
But unfortunately, there is currently no way to know in advance what tools and libraries the tests in kselftest depend on, and can only be known when a test run fails.
Hello Juntong,
did you check if tools/testing/selftests/kselftest_deps.sh does what you're after? It won't tell you what packages are missing because it's distro-independent, but it tells you what libs your system is missing.
e.g.
(...) Targets failed build dependency check on system: alsa bpf cachestat capabilities clone3 filesystems fpu futex hid intel_pstate kvm landlock membarrier memfd mm mqueue net netfilter powerpc ptp rseq rtc safesetid sched seccomp timens timers user_events vDSO -------------------------------------------------------- Missing libraries system -lasound -lcap -lcap-ng -lcrypto -ldl -lelf -lfuse -lgcc_s -lm -lmnl -lnuma -lpopt -lpthread -lrt -lz -pthread
Regards, - Ricardo
On 2023/9/25 19:24, Ricardo B. Marliere wrote:
On 23/09/25 06:25PM, Juntong Deng wrote:
Most of the tests in kselftest rely on external tools and libraries to run, which means that in order to run the tests effectively we need to have all the dependencies installed first.
But unfortunately, there is currently no way to know in advance what tools and libraries the tests in kselftest depend on, and can only be known when a test run fails.
Hello Juntong,
did you check if tools/testing/selftests/kselftest_deps.sh does what you're after? It won't tell you what packages are missing because it's distro-independent, but it tells you what libs your system is missing.
e.g.
(...) Targets failed build dependency check on system: alsa bpf cachestat capabilities clone3 filesystems fpu futex hid intel_pstate kvm landlock membarrier memfd mm mqueue net netfilter powerpc ptp rseq rtc safesetid sched seccomp timens timers user_events vDSO -------------------------------------------------------- Missing libraries system -lasound -lcap -lcap-ng -lcrypto -ldl -lelf -lfuse -lgcc_s -lm -lmnl -lnuma -lpopt -lpthread -lrt -lz -pthread
Regards,
- Ricardo
Hi Ricardo, thanks for your reply.
I checked kselftest_deps.sh and it does find all missing library dependencies.
But kselftest_deps.sh cannot find missing tool dependencies, such as ndisc6.
I think we still need to find a way to solve this problem.
Best wishes.
Juntong Deng
linux-kselftest-mirror@lists.linaro.org
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Juntong Deng -
Ricardo B. Marliere