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drm/i915: Force an aliasing_ppgtt test for context execution 

Ensure that we minimally exercise the aliasing_ppgtt, even on a
full-ppgtt, by allocating one and similarly creating a context to use
it.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-40-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-02-13 17:15:51 +00:00
parent 6cde9a02e0
commit 92fdf8d4a3
1 changed files with 58 additions and 3 deletions
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61
drivers/gpu/drm/i915/selftests/i915_gem_context.c
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@ -325,6 +325,7 @@ static int igt_ctx_exec(void *arg)
IGT_TIMEOUT(end_time);
LIST_HEAD(objects);
unsigned long ncontexts, ndwords, dw;
bool first_shared_gtt = true;
int err;
/* Create a few different contexts (with different mm) and write
@ -342,7 +343,12 @@ static int igt_ctx_exec(void *arg)
struct i915_gem_context *ctx;
unsigned int id;
ctx = i915_gem_create_context(i915, file->driver_priv);
if (first_shared_gtt) {
ctx = __create_hw_context(i915, file->driver_priv);
first_shared_gtt = false;
} else {
ctx = i915_gem_create_context(i915, file->driver_priv);
}
if (IS_ERR(ctx)) {
err = PTR_ERR(ctx);
goto out_unlock;
@ -394,11 +400,60 @@ out_unlock:
return err;
}
int i915_gem_context_live_selftests(struct drm_i915_private *i915)
static int fake_aliasing_ppgtt_enable(struct drm_i915_private *i915)
{
struct drm_i915_gem_object *obj;
int err;
err = i915_gem_init_aliasing_ppgtt(i915);
if (err)
return err;
list_for_each_entry(obj, &i915->mm.bound_list, global_link) {
struct i915_vma *vma;
vma = i915_vma_instance(obj, &i915->ggtt.base, NULL);
if (IS_ERR(vma))
continue;
vma->flags &= ~I915_VMA_LOCAL_BIND;
}
return 0;
}
static void fake_aliasing_ppgtt_disable(struct drm_i915_private *i915)
{
i915_gem_fini_aliasing_ppgtt(i915);
}
int i915_gem_context_live_selftests(struct drm_i915_private *dev_priv)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_ctx_exec),
};
bool fake_alias = false;
int err;
return i915_subtests(tests, i915);
/* Install a fake aliasing gtt for exercise */
if (USES_PPGTT(dev_priv) && !dev_priv->mm.aliasing_ppgtt) {
mutex_lock(&dev_priv->drm.struct_mutex);
err = fake_aliasing_ppgtt_enable(dev_priv);
mutex_unlock(&dev_priv->drm.struct_mutex);
if (err)
return err;
GEM_BUG_ON(!dev_priv->mm.aliasing_ppgtt);
fake_alias = true;
}
err = i915_subtests(tests, dev_priv);
if (fake_alias) {
mutex_lock(&dev_priv->drm.struct_mutex);
fake_aliasing_ppgtt_disable(dev_priv);
mutex_unlock(&dev_priv->drm.struct_mutex);
}
return err;
}