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The cgroup tests announce their plan before checking whether cgroup v2 is
available, so on a host without it they promise a number of results and
then skip out after the first one:
TAP version 13
1..3
ok 1 # SKIP cgroup v2 isn't mounted
# Planned tests != run tests (3 != 1)
# Totals: pass:0 fail:0 xfail:0 xpass:0 skip:1 error:0
ksft_exit_skip() can only emit a well formed "1..0 # SKIP" line while no
plan has been printed, as the comment above it in kselftest.h points out.
Move ksft_set_plan() below the setup checks that can skip, so that a
skipped run reports:
TAP version 13
1..0 # SKIP cgroup v2 isn't mounted
Several of the tests skip more than once while setting up, for a missing
or unwritable controller as well, so the plan goes after the last of
them. test_core joins its two setup paths at the post_v2_setup label and
sets the plan there.
Reporting each planned test as skipped instead would keep the plan where
it is, but the setup failures here mean the whole test cannot run rather
than its individual cases being skipped, which is what "1..0 # SKIP" is
for.
Fixes: 1dc830ee4c15 ("selftests/cgroup: conform test to KTAP format output")
Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com>
Reviewed-by: Sarthak Sharma <sarthak.sharma@arm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This follow-up patch completes centralization of kselftest.h and
ksefltest_harness.h includes in remaining seltests files, replacing all
relative paths with a non-relative paths using shared -I include path in
lib.mk
Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on
riscv, arm64, x86_64 and powerpc arch.
[reddybalavignesh9979@gmail.com: add selftests include path for kselftest.h]
Link: https://lkml.kernel.org/r/20251017090201.317521-1-reddybalavignesh9979@gmail.com
Link: https://lkml.kernel.org/r/20251016104409.68985-1-reddybalavignesh9979@gmail.com
Signed-off-by: Bala-Vignesh-Reddy <reddybalavignesh9979@gmail.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Günther Noack <gnoack@google.com>
Cc: Jakub Kacinski <kuba@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mickael Salaun <mic@digikod.net>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Simon Horman <horms@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The predicates in test expect event counting from 73e75e6fc352b
("cgroup/pids: Separate semantics of pids.events related to pids.max")
and the test would fail on older kernels. We want to have one version of
tests for all, so detect the feature and skip the test on old kernels.
(The test could even switch to check v1 semantics based on the flag but
keep it simple for now.)
Fixes: 9f34c566027b6 ("selftests: cgroup: Add basic tests for pids controller")
Signed-off-by: Michal Koutný <mkoutny@suse.com>
Tested-by: Sebastian Chlad <sebastian.chlad@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This commit adds (and wires in) new test program for checking basic pids
controller functionality -- restricting tasks in a cgroup and correct
event counting.
Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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