Re: [PATCH bpf-next 2/6] libbpf: Collect static vs global info about functions

On 1/8/20 2:25 AM, Toke Høiland-Jørgensen wrote:

Alexei Starovoitov [off-list ref] writes:

quoted

Collect static vs global information about BPF functions from ELF file and
improve BTF with this additional info if llvm is too old and doesn't emit it on
its own.

Has the support for this actually landed in LLVM yet? I tried grep'ing
in the commit log and couldn't find anything...

It has not landed yet. The commit link is:
    https://reviews.llvm.org/D71638

I will try to land the patch in the next couple of days once this series
of patch is merged or the principle of the patch is accepted.

[...]

quoted

@@ -313,6 +321,7 @@ struct bpf_object {
  	bool loaded;
  	bool has_pseudo_calls;
  	bool relaxed_core_relocs;
+	bool llvm_emits_func_linkage;

Nit: s/llvm/compiler/? Presumably GCC will also support this at some
point?

-Toke