793e6612de
Replace the allocation code with the i915 version. This simplifies the
code a little, and importantly we get the accounting at the mgr level,
which is useful for debug (and maybe userspace), plus per resource
tracking so we can easily check if a resource is using one or pages in
the mappable part of vram (useful for eviction), or if the resource is
completely within the mappable portion (useful for checking if the
resource can be safely CPU mapped).
v2: Fix missing PAGE_SHIFT
v3: (Gwan-gyeong Mun)
- Fix incorrect usage of ilog2(mm.chunk_size).
- Fix calculation when checking for impossible allocation sizes, also
check much earlier.
v4: (Gwan-gyeong Mun)
- Fix calculation when extending the [fpfn, lpfn] range due to the
roundup_pow_of_two().
v5: (Gwan-gyeong Mun)
- Move the check for running out of mappable VRAM to before doing any of
the roundup_pow_of_two().
v6: (Jani)
- Stop abusing BUG_ON(). We can easily just use WARN_ON() here and
return a proper error to the caller, which is much nicer if we ever
trigger these.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.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.