diff options
| author | Alexei Starovoitov <ast@kernel.org> | 2017-12-20 18:09:41 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2017-12-20 18:09:42 -0800 |
| commit | 7466177635be4d5f2452284085b5c2cc299367fe (patch) | |
| tree | 47cca432779b910dab12ee5cc81b792f6e432a76 /kernel/bpf/core.c | |
| parent | 7d9890ef505a8c2a778d304535e26e827d58c466 (diff) | |
| parent | 7105e828c087de970fcb5a9509db51bfe6bd7894 (diff) | |
Merge branch 'bpftool-improvements-kallsymfix'
Daniel Borkmann says:
====================
This work adds correlation of maps and calls into the bpftool
xlated dump in order to help debugging and introspection of
loaded BPF progs. First patch makes kallsyms work on subprogs
with bpf calls, and second implements the actual correlation.
Details and example output can be found in the 2nd patch.
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/core.c')
| -rw-r--r-- | kernel/bpf/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 768e0a02d8c8..70a534549cd3 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -771,7 +771,9 @@ struct bpf_prog *bpf_jit_blind_constants(struct bpf_prog *prog) /* Base function for offset calculation. Needs to go into .text section, * therefore keeping it non-static as well; will also be used by JITs - * anyway later on, so do not let the compiler omit it. + * anyway later on, so do not let the compiler omit it. This also needs + * to go into kallsyms for correlation from e.g. bpftool, so naming + * must not change. */ noinline u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5) { |