Chris Wilson cd82f37a9d drm/i915/shrinker: Wrap need_resched() inside preempt-disable ...

In order for us to successfully detect the end of a timeslice,
preemption must be disabled. Otherwise, inside the loop we may be
preempted many times without our noticing, and each time our timeslice
will be reset, invalidating need_resched()

Reported-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reported-by: Tomi Sarvela <tomi.p.sarvela@intel.com>
Fixes: 290271de34 ("drm/i915: Spin for struct_mutex inside shrinker")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: <drm-intel-fixes@lists.freedesktop.org> # v4.13-rc1+
Link: https://patchwork.freedesktop.org/patch/msgid/20170804104135.26805-1-chris@chris-wilson.co.uk
Tested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit 6cb0c6ad9e)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

2017-08-07 13:38:56 +03:00

..

drm

drm/i915/shrinker: Wrap need_resched() inside preempt-disable

2017-08-07 13:38:56 +03:00

host1x

gpu: host1x: Free the IOMMU domain when there is no device to attach

2017-07-27 16:57:34 +02:00

ipu-v3

BackMerge tag 'v4.12-rc5' into drm-next

2017-06-16 13:58:27 +10:00

vga

sched/wait: Rename wait_queue_t => wait_queue_entry_t

2017-06-20 12:18:27 +02:00

Makefile

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