On Thu, Jul 02, 2020 at 08:34:17PM -0700, Linus Torvalds wrote: > On Thu, Jul 2, 2020 at 7:35 PM Alexei Starovoitov > <alexei.starovoitov@xxxxxxxxx> wrote: > > > > On Thu, Jul 02, 2020 at 06:05:29PM -0700, Linus Torvalds wrote: > > > On Thu, Jul 2, 2020 at 1:03 PM Alexei Starovoitov > > > <alexei.starovoitov@xxxxxxxxx> wrote: > > > > > > > > The BPF program dump_bpf_prog() in iterators.bpf.c is printing this data about > > > > all BPF programs currently loaded in the system. This information is unstable > > > > and will change from kernel to kernel. > > > > > > If so, it should probably be in debugfs, not in /sys/fs/ > > > > /sys/fs/bpf/ is just a historic location where we chose to mount bpffs. > > It's more the "information is unstable and will change from kernel to kernel" > > No such interfaces exist. If people start parsing it and depending it, > it's suddenly an ABI, whether you want to or not (and whether you > documented it or not). > > At least if it's in /sys/kernel/debug/bpf/ or something, it's less > likely that anybody will do that. I think I will go with "debug" mount option then. By default nothing will be preloaded, so de-facto /sys/fs/bpf/ will stay empty.
