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drm/i915/selftests: Constrain mock_gtt tests to fit within RAM

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Be pessimistic and presume that we actually allocate every page we
exercise via the mock_gtt (e.g. for gvt). In which case we have to keep
our working set under the available physical memory to prevent oom.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180710080424.7821-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-07-10 09:04:24 +01:00
parent 8cff1f4a3c
commit ebfa7944d6
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
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@ -1244,6 +1244,7 @@ static int exercise_mock(struct drm_i915_private *i915,
u64 hole_start, u64 hole_end,
unsigned long end_time))
{
const u64 limit = totalram_pages << PAGE_SHIFT;
struct i915_gem_context *ctx;
struct i915_hw_ppgtt *ppgtt;
IGT_TIMEOUT(end_time);
@ -1256,7 +1257,7 @@ static int exercise_mock(struct drm_i915_private *i915,
ppgtt = ctx->ppgtt;
GEM_BUG_ON(!ppgtt);
err = func(i915, &ppgtt->vm, 0, ppgtt->vm.total, end_time);
err = func(i915, &ppgtt->vm, 0, min(ppgtt->vm.total, limit), end_time);
mock_context_close(ctx);
return err;