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e999995c84
The ftrace_[enable,disable]_ftrace_graph_caller() are used to do special hooks for graph tracer, which are not needed on some ARCHs that use graph_ops:func function to install return_hooker. So introduce the weak version in ftrace core code to cleanup in x86. Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20220420160006.17880-1-zhouchengming@bytedance.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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.