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author | KP Singh <kpsingh@google.com> | 2020-11-06 13:37:43 +0300 |
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committer | Alexei Starovoitov <ast@kernel.org> | 2020-11-06 19:08:37 +0300 |
commit | 3ca1032ab7ab010eccb107aa515598788f7d93bb (patch) | |
tree | e09a5bff5dfa40b270ce5fe937ec1e0a9af7ff45 /tools/include/vdso | |
parent | 864ab0616dccf14e51618a24acc7cf23ddd2b98a (diff) | |
download | linux-3ca1032ab7ab010eccb107aa515598788f7d93bb.tar.xz |
bpf: Implement get_current_task_btf and RET_PTR_TO_BTF_ID
The currently available bpf_get_current_task returns an unsigned integer
which can be used along with BPF_CORE_READ to read data from
the task_struct but still cannot be used as an input argument to a
helper that accepts an ARG_PTR_TO_BTF_ID of type task_struct.
In order to implement this helper a new return type, RET_PTR_TO_BTF_ID,
is added. This is similar to RET_PTR_TO_BTF_ID_OR_NULL but does not
require checking the nullness of returned pointer.
Signed-off-by: KP Singh <kpsingh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20201106103747.2780972-6-kpsingh@chromium.org
Diffstat (limited to 'tools/include/vdso')
0 files changed, 0 insertions, 0 deletions