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Maarten Lankhorst 6cb12fbda1 drm/i915: Use trylock instead of blocking lock for __i915_gem_free_objects.
Convert free_work into delayed_work, similar to ttm to allow converting the
blocking lock in __i915_gem_free_objects to a trylock.

Unlike ttm, the object should already be idle, as it's kept alive
by a reference through struct i915_vma->active, which is dropped
after all vma's are idle.

Because of this, we can use a no wait by default, or when the lock
is contested, we use ttm's 10 ms.

The trylock should only fail when the object is sharing it's resv with
other objects, and typically objects are not kept locked for a long
time, so we can safely retry on failure.

Fixes: be7612fd66 ("drm/i915: Require object lock when freeing pages during destruction")
Testcase: igt/gem_exec_alignment/pi*
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211222155622.2960379-1-maarten.lankhorst@linux.intel.com
2021-12-23 12:30:27 +01:00
Documentation drm-misc-next for 5.17: 2021-11-23 09:38:55 +10:00
LICENSES
arch Two X86 fixes: 2021-11-21 11:25:19 -08:00
block
certs
crypto
drivers drm/i915: Use trylock instead of blocking lock for __i915_gem_free_objects. 2021-12-23 12:30:27 +01:00
fs pstore/blk: Use "%lu" to format unsigned long 2021-11-21 09:44:19 -08:00
include drm-misc-next for 5.17: 2021-11-23 09:38:55 +10:00
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MAINTAINERS Merge drm/drm-next into drm-intel-gt-next 2021-11-25 12:52:32 +00:00
Makefile Linux 5.16-rc2 2021-11-21 13:47:39 -08:00
README

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 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.