Andrii Nakryiko ef8820fea8 bpf: Assign ID to vmlinux BTF and return extra info for BTF in GET_OBJ_INFO ... Allocate ID for vmlinux BTF. This makes it visible when iterating over all BTF objects in the system. To allow distinguishing vmlinux BTF (and later kernel module BTF) from user-provided BTFs, expose extra kernel_btf flag, as well as BTF name ("vmlinux" for vmlinux BTF, will equal to module's name for module BTF). We might want to later allow specifying BTF name for user-provided BTFs as well, if that makes sense. But currently this is reserved only for in-kernel BTFs. Having in-kernel BTFs exposed IDs will allow to extend BPF APIs that require in-kernel BTF type with ability to specify BTF types from kernel modules, not just vmlinux BTF. This will be implemented in a follow up patch set for fentry/fexit/fmod_ret/lsm/etc. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20201110011932.3201430-3-andrii@kernel.org		2020-12-04 20:04:52 -08:00
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asm	AF_XDP: add xsk.{c,h} to Makefile and fix build	2019-03-05 09:22:54 -08:00
linux	include: implement list_empty() and list_for_each_entry()	2020-09-03 21:21:34 -07:00
uapi/linux	bpf: Assign ID to vmlinux BTF and return extra info for BTF in GET_OBJ_INFO	2020-12-04 20:04:52 -08:00