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Filename Latest commit message Latest commit date
Alexei Starovoitov 51746f9486 Merge branch 'btf_get_next_id'
Quentin Monnet says:

====================
This set adds a new command BPF_BTF_GET_NEXT_ID to the bpf() system call,
adds the relevant API function in libbpf, and uses it in bpftool to list
all BTF objects loaded on the system (and to dump the ids of maps and
programs associated with them, if any).

The main motivation of listing BTF objects is introspection and debugging
purposes. By getting BPF program and map information, it should already be
possible to list all BTF objects associated to at least one map or one
program. But there may be unattached BTF objects, held by a file descriptor
from a user space process only, and we may want to list them too.

As a side note, it also turned useful for examining the BTF objects
attached to offloaded programs, which would not show in program information
because the BTF id is not copied when retrieving such info. A fix is in
progress on that side.

v2:
- Rebase patch with new libbpf function on top of Andrii's changes
  regarding libbpf versioning.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-08-20 09:51:07 -07:00
arch
block
certs
crypto
Documentation Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2019-08-13 16:24:57 -07:00
drivers net/mlx5e: Add AF_XDP need_wakeup support 2019-08-17 23:07:32 +02:00
fs
include bpf: add new BPF_BTF_GET_NEXT_ID syscall command 2019-08-20 09:51:06 -07:00
init
ipc
kernel bpf: add new BPF_BTF_GET_NEXT_ID syscall command 2019-08-20 09:51:06 -07:00
lib test_bpf: Fix a new clang warning about xor-ing two numbers 2019-08-20 17:07:29 +02:00
LICENSES
mm
net xsk: remove AF_XDP socket from map when the socket is released 2019-08-17 23:24:45 +02:00
samples samples/bpf: add use of need_wakeup flag in xdpsock 2019-08-17 23:07:32 +02:00
scripts Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2019-08-13 16:24:57 -07:00
security
sound
tools tools: bpftool: implement "bpftool btf show|list" 2019-08-20 09:51:06 -07:00
usr
virt
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.