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Chris Wilson 1ab22356b3 drm/i915: Prune the reservation shared fence array 
The shared fence array is not autopruning and may continue to grow as an
object is shared between new timelines. Take the opportunity when we
think the object is idle (we have to confirm that any external fence is
also signaled) to decouple all the fences.

We apply a similar trick after waiting on an object, see commit
e54ca97747 ("drm/i915: Remove completed fences after a wait")

v2: No longer need to handle the batch pool as a special case.
v3: Need to trylock from within i915_vma_retire as this may be called
form the shrinker - and we may later try to allocate underneath the
reservation lock, so a deadlock is possible.

References: https://bugs.freedesktop.org/show_bug.cgi?id=102936
Fixes: d07f0e59b2 ("drm/i915: Move GEM activity tracking into a common struct reservation_object")
Fixes: 80b204bce8 ("drm/i915: Enable multiple timelines")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171107220656.5020-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2017-11-08 15:40:31 +00:00
arch Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-10-01 13:55:32 -07:00
block block: fix a crash caused by wrong API 2017-09-25 08:56:05 -06:00
certs
crypto
Documentation dt-bindings: display: sun4i: Add binding for A31 HDMI controller 2017-10-11 09:53:25 +02:00
drivers drm/i915: Prune the reservation shared fence array 2017-11-08 15:40:31 +00:00
firmware
fs Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-10-01 12:10:02 -07:00
include drm/i915: Reject unknown syncobj flags 2017-11-03 09:28:05 +00:00
init
ipc fix a typo in put_compat_shm_info() 2017-09-25 20:41:46 -04:00
kernel Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-10-01 12:34:42 -07:00
lib Merge drm-upstream/drm-next into drm-intel-next-queued 2017-09-28 15:56:49 +03:00
mm Merge drm-upstream/drm-next into drm-intel-next-queued 2017-10-18 12:37:31 +03:00
net Revert "Bluetooth: Add option for disabling legacy ioctl interfaces" 2017-09-28 13:20:32 -07:00
samples
scripts Merge airlied/drm-next into drm-misc-next 2017-10-03 11:09:16 +02:00
security Merge commit 'keys-fixes-20170927' into fixes-v4.14-rc3 2017-09-28 09:11:28 +10:00
sound
tools 2nd batch of v4.15 features: 2017-10-12 10:20:03 +10:00
usr
virt
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MAINTAINERS MAINTAINERS: Add dri-devel as a mailing list for anything fbdev 2017-10-03 11:23:42 +02:00
Makefile Linux 4.14-rc3 2017-10-01 14:54:54 -07:00
README

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

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.