netdev - [PATCH bpf-next v3 0/3] tools/bpf: changes of libbpf debug interfaces

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Date:   Fri, 1 Feb 2019 14:06:16 -0800
From:   Yonghong Song <yhs@...com>
To:     Arnaldo Carvalho de Melo <acme@...hat.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        <netdev@...r.kernel.org>
CC:     Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>, <kernel-team@...com>,
        Yonghong Song <yhs@...com>
Subject: [PATCH bpf-next v3 0/3] tools/bpf: changes of libbpf debug interfaces

These are patches responding to my comments for
Magnus's patch (https://patchwork.ozlabs.org/patch/1032848/).
The goal is to make pr_* macros available to other C files
than libbpf.c, and to simplify API function libbpf_set_print().

Specifically, Patch #1 used global functions
to facilitate pr_* macros in the header files so they
are available in different C files.             
Patch #2 removes the global function libbpf_dprint_level_available()
which is added in Patch 1.
Patch #3 simplified libbpf_set_print() which takes only one print
function with a debug level argument among others.

Changelogs:
 v2 -> v3:
   . bailed out earlier in libbpf_debug_print() if __libbpf_pr is NULL
   . added missing LIBBPF_DEBUG level check in libbpf.c __base_pr().
 v1 -> v2:
   . Renamed global function libbpf_dprint() to libbpf_debug_print()
     to be more expressive.
   . Removed libbpf_dprint_level_available() as it is used only
     once in btf.c and we can remove it by optimizing for common cases.

Yonghong Song (3):
  tools/bpf: move libbpf pr_* debug print functions to headers
  tools/bpf: print out btf log at LIBBPF_WARN level
  tools/bpf: simplify libbpf API function libbpf_set_print()

 tools/lib/bpf/btf.c                           | 110 +++++++++---------
 tools/lib/bpf/btf.h                           |   7 +-
 tools/lib/bpf/libbpf.c                        |  47 ++++----
 tools/lib/bpf/libbpf.h                        |  20 ++--
 tools/lib/bpf/test_libbpf.cpp                 |   4 +-
 tools/lib/bpf/util.h                          |  30 +++++
 tools/perf/util/bpf-loader.c                  |  32 ++---
 tools/testing/selftests/bpf/test_btf.c        |   7 +-
 .../testing/selftests/bpf/test_libbpf_open.c  |  36 +++---
 tools/testing/selftests/bpf/test_progs.c      |  20 +++-
 10 files changed, 171 insertions(+), 142 deletions(-)
 create mode 100644 tools/lib/bpf/util.h

-- 
2.17.1