netdev - [PATCH bpf-next 0/2] libbpf: make use of BTF through sysfs

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Message-ID: <20190813185443.437829-1-andriin@fb.com>
Date:   Tue, 13 Aug 2019 11:54:41 -0700
From:   Andrii Nakryiko <andriin@...com>
To:     <bpf@...r.kernel.org>, <netdev@...r.kernel.org>, <ast@...com>,
        <daniel@...earbox.net>, <acme@...hat.com>
CC:     <andrii.nakryiko@...il.com>, <kernel-team@...com>,
        Andrii Nakryiko <andriin@...com>
Subject: [PATCH bpf-next 0/2] libbpf: make use of BTF through sysfs

Now that kernel's BTF is exposed through sysfs at well-known location, attempt
to load it first as a target BTF for the purpose of BPF CO-RE relocations.

Patch #1 is a follow-up patch to rename /sys/kernel/btf/kernel into
/sys/kernel/btf/vmlinux.
Patch #2 adds ability to load raw BTF contents from sysfs and expands the list
of locations libbpf attempts to load vmlinux BTF from.

Andrii Nakryiko (2):
  btf: rename /sys/kernel/btf/kernel into /sys/kernel/btf/vmlinux
  libbpf: attempt to load kernel BTF from sysfs first

 Documentation/ABI/testing/sysfs-kernel-btf |  2 +-
 kernel/bpf/sysfs_btf.c                     | 30 +++++-----
 scripts/link-vmlinux.sh                    | 18 +++---
 tools/lib/bpf/libbpf.c                     | 64 +++++++++++++++++++---
 4 files changed, 82 insertions(+), 32 deletions(-)

-- 
2.17.1