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bpf: Store cookies in kprobe_multi bpf_link_info data

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Storing cookies in kprobe_multi bpf_link_info data. The cookies
field is optional and if provided it needs to be an array of
__u64 with kprobe_multi.count length.

Acked-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240119110505.400573-3-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiri Olsa
2024-01-19 12:04:59 +01:00
committed by Alexei Starovoitov
parent d5c16492c6
commit 9fd112b1f8
3 changed files with 17 additions and 0 deletions
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tools/include/uapi/linux/bpf.h
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@@ -6563,6 +6563,7 @@ struct bpf_link_info {
__u32 count; /* in/out: kprobe_multi function count */
__u32 flags;
__u64 missed;
__aligned_u64 cookies;
} kprobe_multi;
struct {
__aligned_u64 path;