linux.git/tools/testing/selftests/bpf/testing_helpers.h, branch v6.6

selftests/bpf: Move get_time_ns to testing_helpers.h

2023-08-21T22:51:26+00:00

We'd like to have single copy of get_time_ns used b bench and test_progs,
but we can't just include bench.h, because of conflicting 'struct env'
objects.

Moving get_time_ns to testing_helpers.h which is being included by both
bench and test_progs objects.

Signed-off-by: Jiri Olsa 
Link: https://lore.kernel.org/r/20230809083440.3209381-19-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov

selftests/bpf: Use un/load_bpf_testmod functions in tests

2023-05-17T05:09:23+00:00

Now that we have un/load_bpf_testmod helpers in testing_helpers.h,
we can use it in other tests and save some lines.

Acked-by: David Vernet 
Signed-off-by: Jiri Olsa 
Link: https://lore.kernel.org/r/20230515133756.1658301-7-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov

selftests/bpf: Move test_progs helpers to testing_helpers object

2023-05-17T05:09:23+00:00

Moving test_progs helpers to testing_helpers object so they can be
used from test_verifier in following changes.

Also adding missing ifndef header guard to testing_helpers.h header.

Using stderr instead of env.stderr because un/load_bpf_testmod helpers
will be used outside test_progs. Also at the point of calling them
in test_progs the std files are not hijacked yet and stderr is the
same as env.stderr.

Acked-by: David Vernet 
Signed-off-by: Jiri Olsa 
Link: https://lore.kernel.org/r/20230515133756.1658301-4-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov

selftests/bpf: Test_progs can read test lists from file

2023-05-01T22:30:02+00:00

Improve test selection logic when using -a/-b/-d/-t options.
The list of tests to include or exclude can now be read from a file,
specified as @.

The file contains one name (or wildcard pattern) per line, and
comments beginning with # are ignored.

These options can be passed multiple times to read more than one file.

Signed-off-by: Stephen Veiss 
Signed-off-by: Andrii Nakryiko 
Acked-by: Yonghong Song 
Link: https://lore.kernel.org/bpf/20230427225333.3506052-3-sveiss@meta.com

selftests/bpf: Use read_perf_max_sample_freq() in perf_event_stackmap

2023-04-13T12:32:04+00:00

Currently, perf_event sample period in perf_event_stackmap is set too low
that the test fails randomly. Fix this by using the max sample frequency,
from read_perf_max_sample_freq().

Move read_perf_max_sample_freq() to testing_helpers.c. Replace the CHECK()
with if-printf, as CHECK is not available in testing_helpers.c.

Fixes: 1da4864c2b20 ("selftests/bpf: Add callchain_stackid")
Signed-off-by: Song Liu 
Signed-off-by: Daniel Borkmann 
Link: https://lore.kernel.org/bpf/20230412210423.900851-2-song@kernel.org

selftests/bpf: Improve by-name subtest selection logic in prog_tests

2022-04-11T03:08:20+00:00

Improve subtest selection logic when using -t/-a/-d parameters.
In particular, more than one subtest can be specified or a
combination of tests / subtests.

-a send_signal -d send_signal/send_signal_nmi* - runs send_signal
test without nmi tests

-a send_signal/send_signal_nmi*,find_vma - runs two send_signal
subtests and find_vma test

-a 'send_signal*' -a find_vma -d send_signal/send_signal_nmi* -
runs 2 send_signal test and find_vma test. Disables two send_signal
nmi subtests

-t send_signal -t find_vma - runs two *send_signal* tests and one
*find_vma* test

This will allow us to have granular control over which subtests
to disable in the CI system instead of disabling whole tests.

Also, add new selftest to avoid possible regression when
changing prog_test test name selection logic.

Signed-off-by: Mykola Lysenko 
Signed-off-by: Andrii Nakryiko 
Link: https://lore.kernel.org/bpf/20220409001750.529930-1-mykolal@fb.com

selftests/bpf: Merge test_stub.c into testing_helpers.c

2021-11-07T16:34:23+00:00

Move testing prog and object load wrappers (bpf_prog_test_load and
bpf_test_load_program) into testing_helpers.{c,h} and get rid of
otherwise useless test_stub.c. Make testing_helpers.c available to
non-test_progs binaries as well.

Signed-off-by: Andrii Nakryiko 
Signed-off-by: Alexei Starovoitov 
Acked-by: Dave Marchevsky 
Link: https://lore.kernel.org/bpf/20211103220845.2676888-11-andrii@kernel.org

selftests/bpf: Add link detach tests for cgroup, netns, and xdp bpf_links

2020-08-02T03:38:28+00:00

Add bpf_link__detach() testing to selftests for cgroup, netns, and xdp
bpf_links.

Signed-off-by: Andrii Nakryiko 
Signed-off-by: Alexei Starovoitov 
Acked-by: Song Liu 
Acked-by: John Fastabend 
Link: https://lore.kernel.org/bpf/20200731182830.286260-4-andriin@fb.com

selftests/bpf: Extract parse_num_list into generic testing_helpers.c

2020-05-13T19:19:38+00:00

Add testing_helpers.c, which will contain generic helpers for test runners and
tests needing some common generic functionality, like parsing a set of
numbers.

Signed-off-by: Andrii Nakryiko 
Signed-off-by: Alexei Starovoitov 
Acked-by: Yonghong Song 
Link: https://lore.kernel.org/bpf/20200512192445.2351848-2-andriin@fb.com