[4.19] [Feature]merge bpf set 46 · Pull Request !2720 · anolis/cloud-kernel

bugzilla: https://bugzilla.openanolis.cn/show_bug.cgi?id=5530

anolis: configs: enable CONFIG_DEBUG_INFO_BTF
bpf: Fix sysfs export of empty BTF section
bpf, btf: Always output invariant hit in pahole DWARF to BTF transform
bpf: Force .BTF section start to zero when dumping from vmlinux
bpf: Support pre-2.25-binutils objcopy for vmlinux BTF
btf: do not use CONFIG_OUTPUT_FORMAT
kbuild: replace BASH-specific ${@:2} with shift and ${@}
btf: fix return value check in btf_vmlinux_init()
libbpf: attempt to load kernel BTF from sysfs first
btf: rename /sys/kernel/btf/kernel into /sys/kernel/btf/vmlinux
btf: expose BTF info through sysfs
kbuild, btf: Fix dependencies for DEBUG_INFO_BTF
kbuild: tolerate missing pahole when generating BTF
kbuild: handle old pahole more gracefully when generating BTF
kbuild: add ability to generate BTF type info for vmlinux
tools: bpftool: add feature check for zlib
tools: bpftool: fix reading from /proc/config.gz
bpf: sync bpf.h to tools infrastructure
sock: make cookie generation global instead of per netns

类型	指派人员	状态
审查	Guanjun dtc zelindeng maqiao-alibaba baolin.wang Tony Lu 冯光辉 David Xuan Zhuo Xuchun Shang	已完成 (0/0人)
测试	小龙已测试通过	已完成 (1/1人)

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