0cf5eb76e2
[Why] Tracing is a useful and cheap debug functionality [How] This creates a new trace system amdgpu_dm, currently with three trace events amdgpu_dc_rreg and amdgpu_dc_wreg report the address and value of any dc register reads and writes amdgpu_dc_performance requires at least one of those two to be enabled. It counts the register reads and writes since the last entry v2: Don't check for NULL before kfree Signed-off-by: David Francis <David.Francis@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.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.