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lf-6.6.y
linux-imx/kernel/bpf/preload/Kconfig
Alexei Starovoitov cb80ddc671 bpf: Convert bpf_preload.ko to use light skeleton. 
The main change is a move of the single line
  #include "iterators.lskel.h"
from iterators/iterators.c to bpf_preload_kern.c.
Which means that generated light skeleton can be used from user space or
user mode driver like iterators.c or from the kernel module or the kernel itself.
The direct use of light skeleton from the kernel module simplifies the code,
since UMD is no longer necessary. The libbpf.a required user space and UMD. The
CO-RE in the kernel and generated "loader bpf program" used by the light
skeleton are capable to perform complex loading operations traditionally
provided by libbpf. In addition UMD approach was launching UMD process
every time bpffs has to be mounted. With light skeleton in the kernel
the bpf_preload kernel module loads bpf iterators once and pins them
multiple times into different bpffs mounts.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220209232001.27490-6-alexei.starovoitov@gmail.com
2022-02-10 23:31:51 +01:00

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SPDX-License-Identifier: GPL-2.0-only

config USERMODE_DRIVER bool default n

menuconfig BPF_PRELOAD bool "Preload BPF file system with kernel specific program and map iterators" depends on BPF depends on BPF_SYSCALL # The dependency on !COMPILE_TEST prevents it from being enabled # in allmodconfig or allyesconfig configurations depends on !COMPILE_TEST select USERMODE_DRIVER help This builds kernel module with several embedded BPF programs that are pinned into BPF FS mount point as human readable files that are useful in debugging and introspection of BPF programs and maps.

if BPF_PRELOAD config BPF_PRELOAD_UMD tristate "bpf_preload kernel module" default m help This builds bpf_preload kernel module with embedded BPF programs for introspection in bpffs. endif