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a399ee6773
Noticed on several perf tools cross build test containers:
[perfbuilder@five ~]$ grep FAIL ~/dm.log/summary
19 10.18 debian:experimental-x-mips : FAIL gcc version 12.3.0 (Debian 12.3.0-6)
20 11.21 debian:experimental-x-mips64 : FAIL gcc version 12.3.0 (Debian 12.3.0-6)
21 11.30 debian:experimental-x-mipsel : FAIL gcc version 12.3.0 (Debian 12.3.0-6)
37 12.07 ubuntu:18.04-x-arm : FAIL gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)
42 11.91 ubuntu:18.04-x-riscv64 : FAIL gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
44 13.17 ubuntu:18.04-x-sh4 : FAIL gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
45 12.09 ubuntu:18.04-x-sparc64 : FAIL gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
[perfbuilder@five ~]$
In file included from util/intel-pt-decoder/intel-pt-pkt-decoder.c:10:
/tmp/perf-6.6.0-rc1/tools/include/asm-generic/unaligned.h: In function 'get_unaligned_le16':
/tmp/perf-6.6.0-rc1/tools/include/asm-generic/unaligned.h:13:29: error: packed attribute causes inefficient alignment for 'x' [-Werror=attributes]
13 | const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr); \
| ^
/tmp/perf-6.6.0-rc1/tools/include/asm-generic/unaligned.h:27:28: note: in expansion of macro '__get_unaligned_t'
27 | return le16_to_cpu(__get_unaligned_t(__le16, p));
| ^~~~~~~~~~~~~~~~~
This comes from the kernel, where the -Wattributes and -Wpacked isn't
used, -Wpacked is already disabled, do it for the attributes as well.
Fixes:
|
History
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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.