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Namhyung Kim f6109fb6f5 perf trace: Split BPF skel code to util/bpf_trace_augment.c
And make builtin-trace.c less conditional.  Dummy functions will be
called when BUILD_BPF_SKEL=0 is used.  This makes the builtin-trace.c
slightly smaller and simpler by removing the skeleton and its helpers.

The conditional guard of trace__init_syscalls_bpf_prog_array_maps() is
changed from the HAVE_BPF_SKEL to HAVE_LIBBPF_SUPPORT as it doesn't
have a skeleton in the code directly.  And a dummy function is added so
that it can be called unconditionally.  The function will succeed only
if the both conditions are true.

Do not include trace_augment.h from the BPF code and move the definition
of TRACE_AUG_MAX_BUF to the BPF directly.

Reviewed-by: Howard Chu <howardchu95@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20250623225721.21553-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
History 2025-06-26 10:31:05 -07:00
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README

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.