Commit ebfa7944 authored by Chris Wilson's avatar Chris Wilson

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

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: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180710080424.7821-1-chris@chris-wilson.co.uk
parent 8cff1f4a
...@@ -1244,6 +1244,7 @@ static int exercise_mock(struct drm_i915_private *i915, ...@@ -1244,6 +1244,7 @@ static int exercise_mock(struct drm_i915_private *i915,
u64 hole_start, u64 hole_end, u64 hole_start, u64 hole_end,
unsigned long end_time)) unsigned long end_time))
{ {
const u64 limit = totalram_pages << PAGE_SHIFT;
struct i915_gem_context *ctx; struct i915_gem_context *ctx;
struct i915_hw_ppgtt *ppgtt; struct i915_hw_ppgtt *ppgtt;
IGT_TIMEOUT(end_time); IGT_TIMEOUT(end_time);
...@@ -1256,7 +1257,7 @@ static int exercise_mock(struct drm_i915_private *i915, ...@@ -1256,7 +1257,7 @@ static int exercise_mock(struct drm_i915_private *i915,
ppgtt = ctx->ppgtt; ppgtt = ctx->ppgtt;
GEM_BUG_ON(!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); mock_context_close(ctx);
return err; return err;
......
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