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| author | Stanislav Fomichev <sdf@google.com> | 2021-07-28 01:23:35 +0300 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2021-07-28 01:59:29 +0300 |
| commit | 33b57e0cc78eb82f2921eb4c6d1c8fcaa733823b (patch) | |
| tree | 353b54e322ce3e6207a184d048df4e2b14c82f0e /tools/bpf | |
| parent | 043c5bb3c4f43670ab4fea0b847373ab42d25f3e (diff) | |
| download | linux-33b57e0cc78eb82f2921eb4c6d1c8fcaa733823b.tar.xz | |
bpf: Increase supported cgroup storage value size
Current max cgroup storage value size is 4k (PAGE_SIZE). The other local
storages accept up to 64k (BPF_LOCAL_STORAGE_MAX_VALUE_SIZE). Let's align
max cgroup value size with the other storages.
For percpu, the max is 32k (PCPU_MIN_UNIT_SIZE) because percpu
allocator is not happy about larger values.
netcnt test is extended to exercise those maximum values
(non-percpu max size is close to, but not real max).
v4:
* remove inner union (Andrii Nakryiko)
* keep net_cnt on the stack (Andrii Nakryiko)
v3:
* refine SIZEOF_BPF_LOCAL_STORAGE_ELEM comment (Yonghong Song)
* anonymous struct in percpu_net_cnt & net_cnt (Yonghong Song)
* reorder free (Yonghong Song)
v2:
* cap max_value_size instead of BUILD_BUG_ON (Martin KaFai Lau)
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210727222335.4029096-1-sdf@google.com
Diffstat (limited to 'tools/bpf')
0 files changed, 0 insertions, 0 deletions