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| author |   Yonghong Song <yonghong.song@linux.dev> | 2023-08-27 08:28:11 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2023-09-08 08:42:18 -0700 |
| commit | 6adf82a4398d774398b4538dad561958c2c9521e (patch) | |
| tree | f94db8a13ea660ba284fb176cbd09cebfc460791 /kernel/bpf/task_iter.c | |
| parent | selftests/bpf: Add bpf_percpu_obj_{new,drop}() macro in bpf_experimental.h (diff) | |
| download | linux-rng-6adf82a4398d774398b4538dad561958c2c9521e.tar.xz linux-rng-6adf82a4398d774398b4538dad561958c2c9521e.zip | |
selftests/bpf: Add tests for array map with local percpu kptr
Add non-sleepable and sleepable tests with percpu kptr. For
non-sleepable test, four programs are executed in the order of:
1. allocate percpu data.
2. assign values to percpu data.
3. retrieve percpu data.
4. de-allocate percpu data.
The sleepable prog tried to exercise all above 4 steps in a
single prog. Also for sleepable prog, rcu_read_lock is needed
to protect direct percpu ptr access (from map value) and
following bpf_this_cpu_ptr() and bpf_per_cpu_ptr() helpers.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230827152811.2000125-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/task_iter.c')
0 files changed, 0 insertions, 0 deletions