netdev - [PATCH v2 bpf-next 0/4] Build BPF selftests and its libbpf, bpftool in debug mode

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Message-ID: <20210313210920.1959628-1-andrii@kernel.org>
Date:   Sat, 13 Mar 2021 13:09:16 -0800
From:   Andrii Nakryiko <andrii@...nel.org>
To:     <bpf@...r.kernel.org>, <netdev@...r.kernel.org>, <ast@...com>,
        <daniel@...earbox.net>
CC:     <andrii@...nel.org>, <kernel-team@...com>
Subject: [PATCH v2 bpf-next 0/4] Build BPF selftests and its libbpf, bpftool in debug mode

Build BPF selftests and libbpf and bpftool, that are used as part of
selftests, in debug mode (specifically, -Og). This makes it much simpler and
nicer to do development and/or bug fixing. See patch #4 for some unscientific
measurements.

This patch set fixes new maybe-unitialized warnings produced in -Og build
mode. Patch #1 fixes the blocker which was causing some XDP selftests failures
due to non-zero padding in bpf_xdp_set_link_opts, which only happened in debug
mode.

Andrii Nakryiko (4):
  libbpf: add explicit padding to bpf_xdp_set_link_opts
  bpftool: fix maybe-uninitialized warnings
  selftests/bpf: fix maybe-uninitialized warning in xdpxceiver test
  selftests/bpf: build everything in debug mode

 tools/bpf/bpftool/btf.c                  | 3 +++
 tools/bpf/bpftool/main.c                 | 3 +--
 tools/bpf/bpftool/map.c                  | 2 +-
 tools/lib/bpf/libbpf.h                   | 1 +
 tools/testing/selftests/bpf/Makefile     | 7 +++++--
 tools/testing/selftests/bpf/xdpxceiver.c | 4 ++--
 6 files changed, 13 insertions(+), 7 deletions(-)

-- 
2.24.1