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| author | Tao Chen <chen.dylane@gmail.com> | 2024-09-10 22:41:10 +0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-09-11 13:22:37 -0700 |
| commit | 1d244784be6b01162b732a5a7d637dfc024c3203 (patch) | |
| tree | a37a02f5d5392573121f9257917ea21e5b6f2b91 /tools/perf/scripts/python/task-analyzer.py | |
| parent | 300a90b2cb5d442879e6398920c49aebbd5c8e40 (diff) | |
bpf: Check percpu map value size first
Percpu map is often used, but the map value size limit often ignored,
like issue: https://github.com/iovisor/bcc/issues/2519. Actually,
percpu map value size is bound by PCPU_MIN_UNIT_SIZE, so we
can check the value size whether it exceeds PCPU_MIN_UNIT_SIZE first,
like percpu map of local_storage. Maybe the error message seems clearer
compared with "cannot allocate memory".
Signed-off-by: Jinke Han <jinkehan@didiglobal.com>
Signed-off-by: Tao Chen <chen.dylane@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240910144111.1464912-2-chen.dylane@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions