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48b13cab1e
Allow a new optional 'Attributes' section to be specified for helper
functions description, e.g.:
* u32 bpf_get_smp_processor_id(void)
* ...
* Return
* ...
* Attributes
* __bpf_fastcall
*
Generated header for the example above:
#ifndef __bpf_fastcall
#if __has_attribute(__bpf_fastcall)
#define __bpf_fastcall __attribute__((bpf_fastcall))
#else
#define __bpf_fastcall
#endif
#endif
...
__bpf_fastcall
static __u32 (* const bpf_get_smp_processor_id)(void) = (void *) 8;
The following rules apply:
- when present, section must follow 'Return' section;
- attribute names are specified on the line following 'Attribute'
keyword;
- attribute names are separated by spaces;
- section ends with an "empty" line (" *\n").
Valid attribute names are recorded in the ATTRS map.
ATTRS maps shortcut attribute name to correct C syntax.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240916091712.2929279-2-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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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 reStructuredText 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.