On Fri, Aug 07, 2020 at 11:45:45AM +0200, Jiri Olsa wrote: > hi, > adding d_path helper function that returns full path for > given 'struct path' object, which needs to be the kernel > BTF 'path' object. The path is returned in buffer provided > 'buf' of size 'sz' and is zero terminated. > > long bpf_d_path(struct path *path, char *buf, u32 sz); > > The helper calls directly d_path function, so there's only > limited set of function it can be called from. > > The patchset also adds support to add set of BTF IDs for > a helper to define functions that the helper is allowed > to be called from. > > Also available at: > https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git > bpf/d_path > > v10 changes: > - added few acks > - returned long instead of int in bpf_d_path helper [Alexei] > - used local cnt variable in d_path test [Andrii] > - fixed tyo in d_path comment [Andrii] > - get rid of reg->off condition in check_func_arg [Andrii] bpf-next is closed. I still encourage developers to submit new features for review, but please tag them as RFC, so the purpose is clear to both maintainers and authors.
