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| author | Jiri Olsa <[email protected]> | 2021-07-14 09:43:55 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2021-07-16 00:58:41 +0000 |
| commit | 9b99edcae5c80c8fb9f8e7149bae528c9e610a72 (patch) | |
| tree | 252a76f356e1539d453c19ed2065a3e57ed58f8f /net/unix/af_unix.c | |
| parent | bpf: Enable BPF_TRAMP_F_IP_ARG for trampolines with call_get_func_ip (diff) | |
| download | kernel-9b99edcae5c80c8fb9f8e7149bae528c9e610a72.tar.gz kernel-9b99edcae5c80c8fb9f8e7149bae528c9e610a72.zip | |
bpf: Add bpf_get_func_ip helper for tracing programs
Adding bpf_get_func_ip helper for BPF_PROG_TYPE_TRACING programs,
specifically for all trampoline attach types.
The trampoline's caller IP address is stored in (ctx - 8) address.
so there's no reason to actually call the helper, but rather fixup
the call instruction and return [ctx - 8] value directly.
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions