9bafb37470
When CONFIG_CFI_CLANG and CONFIG_DYNAMIC_FTRACE are enabled, LLVM will generate a jump function named ftrace_call.cfi_jt for ftrace_call, which makes "&ftrace_call" in ftrace_update_ftrace_func() actually the address of ftrace_call.cfi_jt. As a result, the tracer can't be really enabled through runtime modification. Use __va_function() to get the actual address of ftrace_call to fix the issue. Bug: 184105181 Signed-off-by: Ben Dai <ben.dai@unisoc.com> Change-Id: Ic9272cd4ab447b3b145d8e397e5c9010c49f7a12
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.