Ilya Leoshkevich wrote: > > Am 06.11.2019 um 17:15 schrieb Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>: > > > > On Wed, Nov 6, 2019 at 8:12 AM Ilya Leoshkevich <iii@xxxxxxxxxxxxx> wrote: > >> > >> Currently it's not possible to set bpf_jit_enable = 2 when > >> CONFIG_BPF_JIT_ALWAYS_ON is set, which makes debugging certain problems > >> harder. > > > > This is obsolete way of debugging. > > Please use bpftool dump jited instead. > > Is there a way to integrate bpftool nicely with e.g. test_verifier? > With bpf_jit_enable = 2, I can see JITed code for each test right away, > without pausing it (via gdb or rebuilding with added sleep()) and > running bpftool. On the library side we can set the log_level causing the verifier logic steps to be printed. I guess adding it to bpftool might be nice. At least I would find it useful. I'll probably get to it sometime if its not already there somewhere and/or someone doesn't beat me to it.
