tree fd895cc90186f651678e09f8cdd7e032f11b8633
parent b4406e100347884fb4acaa744bbc01949e74c9f3
author Andrii Nakryiko <andrii@kernel.org> 1722985399 -0700
committer Alexei Starovoitov <ast@kernel.org> 1724424399 -0700

selftests/bpf: make use of PROCMAP_QUERY ioctl if available

Instead of parsing text-based /proc/<pid>/maps file, try to use
PROCMAP_QUERY ioctl() to simplify and speed up data fetching.
This logic is used to do uprobe file offset calculation, so any bugs in
this logic would manifest as failing uprobe BPF selftests.

This also serves as a simple demonstration of one of the intended uses.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20240806230319.869734-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>