Andrii Nakryiko 807b8f0e24 Merge branch 'libbpf: btf typed data dumping fixes (__int128 usage, error propagation)'
Alan Maguire says:

====================

This series aims to resolve further issues with the BTF typed data
dumping interfaces in libbpf.

Compilation failures with use of __int128 on 32-bit platforms were
reported [1].  As a result, the use of __int128 in libbpf typed data
dumping is replaced with __u64 usage for bitfield manipulations.
In the case of 128-bit integer values, they are simply split into
two 64-bit hex values for display (patch 1).

Tests are added for __int128 display in patch 2, using conditional
compilation to avoid problems with a lack of __int128 support.

Patch 3 resolves an issue Andrii noted about error propagation
when handling enum data display.

More followup work is required to ensure multi-dimensional char array
display works correctly.

[1] https://lore.kernel.org/bpf/1626362126-27775-1-git-send-email-alan.maguire@oracle.com/T/#mc2cb023acfd6c3cd0b661e385787b76bb757430d

Changes since v1:

 - added error handling for bitfield size > 64 bits by changing function
   signature for bitfield retrieval to return an int error value and to set
   bitfield value via a __u64 * argument (Andrii)
====================

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
2021-07-20 13:49:26 -07:00
2021-07-11 15:07:40 -07:00
…

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.
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