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author | 2022-05-23 14:07:11 -0700 | |
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committer | 2022-05-23 14:31:28 -0700 | |
commit | 34d4ef5775f776ec4b0d53a02d588bf3195cada6 (patch) | |
tree | 4d71bdf2f9ea5fafa45995ae59d4893eebd1c26c /tools/perf/scripts/python/export-to-postgresql.py | |
parent | bpf: Add bpf_dynptr_read and bpf_dynptr_write (diff) | |
download | linux-dev-34d4ef5775f776ec4b0d53a02d588bf3195cada6.tar.xz linux-dev-34d4ef5775f776ec4b0d53a02d588bf3195cada6.zip |
bpf: Add dynptr data slices
This patch adds a new helper function
void *bpf_dynptr_data(struct bpf_dynptr *ptr, u32 offset, u32 len);
which returns a pointer to the underlying data of a dynptr. *len*
must be a statically known value. The bpf program may access the returned
data slice as a normal buffer (eg can do direct reads and writes), since
the verifier associates the length with the returned pointer, and
enforces that no out of bounds accesses occur.
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-6-joannelkoong@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions