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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-13 17:15:44 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-02-13 20:46:32 +0000 |
| commit | aae4a3d811753d3f79c43c932b8f7d1bcbf42fb0 (patch) | |
| tree | f68b0859db6065d9ad2b23df503606df3ac1787d /drivers/gpu/drm/i915/Kconfig.debug | |
| parent | 4a6f13fce1331df68e1fc7dd4eb0c0b461d5f845 (diff) | |
| download | linux-aae4a3d811753d3f79c43c932b8f7d1bcbf42fb0.tar.bz2 | |
drm/i915: Use fault-injection to force the shrinker to run in live GTT tests
It is possible whilst allocating the page-directory tree for a ppgtt
bind that the shrinker may run and reap unused parts of the tree. If the
shrinker happens to remove a chunk of the tree that the
allocate_va_range has already processed, we may then try to insert into
the dangling tree. This test uses the fault-injection framework to force
the shrinker to be invoked before we allocate new pages, i.e. new chunks
of the PD tree.
References: https://bugs.freedesktop.org/show_bug.cgi?id=99295
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/Kconfig.debug')
| -rw-r--r-- | drivers/gpu/drm/i915/Kconfig.debug | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/Kconfig.debug b/drivers/gpu/drm/i915/Kconfig.debug index a4d8cfd77c3c..68ff072f8b76 100644 --- a/drivers/gpu/drm/i915/Kconfig.debug +++ b/drivers/gpu/drm/i915/Kconfig.debug @@ -65,6 +65,7 @@ config DRM_I915_SELFTEST bool "Enable selftests upon driver load" depends on DRM_I915 default n + select FAULT_INJECTION select PRIME_NUMBERS help Choose this option to allow the driver to perform selftests upon |