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bpf: Add bpf_get_func_ip helper for kprobe programs

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Adding bpf_get_func_ip helper for BPF_PROG_TYPE_KPROBE programs,
so it's now possible to call bpf_get_func_ip from both kprobe and
kretprobe programs.

Taking the caller's address from 'struct kprobe::addr', which is
defined for both kprobe and kretprobe.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/bpf/20210714094400.396467-5-jolsa@kernel.org
This commit is contained in:
Jiri Olsa 2021-07-14 11:43:56 +02:00 committed by Andrii Nakryiko
parent 97e2a9c9a1
commit a524ae0bbf
1 changed files with 1 additions and 1 deletions
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2
include/uapi/linux/bpf.h
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@ -4844,7 +4844,7 @@ union bpf_attr {
*
* u64 bpf_get_func_ip(void *ctx)
* Description
* Get address of the traced function (for tracing programs).
* Get address of the traced function (for tracing and kprobe programs).
* Return
* Address of the traced function.
*/