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Yonghong Song says: ==================== 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_print_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: v3 -> v4: . rename libbpf internal header util.h to libbpf_util.h . rename libbpf internal function libbpf_debug_print() to libbpf_print() 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. ==================== Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.