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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2017-12-12 18:06:51 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-12-13 13:17:44 +0000 |
| commit | 2abe2f844645402e5d47012a04839d1c5cbffd0d (patch) | |
| tree | 5d36295e28ae863e1e6cd3a014cb953d971a3fb3 /drivers/gpu/drm/i915/i915_gem_request.h | |
| parent | drm/i915: Mark up potential allocation paths within i915_sw_fence as might_sleep (diff) | |
| download | linux-dev-2abe2f844645402e5d47012a04839d1c5cbffd0d.tar.xz linux-dev-2abe2f844645402e5d47012a04839d1c5cbffd0d.zip | |
drm/i915: Allow fence allocations to fail
If a fence allocation fails in a blocking context, we will sleep on the
fence as a last resort. We can therefore allow ourselves to fail and
sleep on the fence instead of triggering a system-wide oom. This allows
us to throttle malicious clients that are consuming lots of system
resources by capping the amount of memory used by fences.
Testcase: igt/gem_shrink/execbufX
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171212180652.22061-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_request.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_request.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_request.h b/drivers/gpu/drm/i915/i915_gem_request.h index 26249f39de67..0d6d39f19506 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.h +++ b/drivers/gpu/drm/i915/i915_gem_request.h @@ -204,6 +204,8 @@ struct drm_i915_gem_request { struct list_head client_link; }; +#define I915_FENCE_GFP (GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN) + extern const struct dma_fence_ops i915_fence_ops; static inline bool dma_fence_is_i915(const struct dma_fence *fence) |