Second retroactive test, make sure that the waiters are removed from the
global wait-tree when their seqno completes.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_breadcrumbs.c | 79 ++++++++++++++++++++++++++++++++
1 file changed, 79 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c
index 3eda013903d3..fff1eddc5020 100644
--- a/drivers/gpu/drm/i915/intel_breadcrumbs.c
+++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c
@@ -849,10 +849,89 @@ static int igt_random_insert_remove(void *ignore)
return err;
}
+static void mock_seqno_advance(struct intel_engine_cs *engine, u32 seqno)
+{
+ intel_write_status_page(engine, I915_GEM_HWS_INDEX, seqno);
+}
+
+static int igt_insert_complete(void *ignore)
+{
+ struct intel_engine_cs *engine;
+ struct intel_wait *waiters;
+ const int count = 4096;
+ unsigned long *bitmap;
+ int err = -ENOMEM;
+ int n, m;
+
+ engine = mock_engine("mock");
+ if (!engine)
+ goto out;
+
+ waiters = kmalloc_array(count, sizeof(*waiters), GFP_KERNEL);
+ if (!waiters)
+ goto out_engines;
+
+ bitmap = kzalloc(DIV_ROUND_UP(count, BITS_PER_LONG) * sizeof(*bitmap),
+ GFP_KERNEL);
+ if (!bitmap)
+ goto out_waiters;
+
+ for (n = 0; n < count; n++) {
+ intel_wait_init(&waiters[n], n + 0x1000);
+ intel_engine_add_wait(engine, &waiters[n]);
+ __set_bit(n, bitmap);
+ }
+ err = check_rbtree(engine, bitmap, waiters, count);
+ if (err)
+ goto err;
+
+ for (n = 0; n < count; n = m) {
+ int seqno = 2*n;
+
+ GEM_BUG_ON(find_first_bit(bitmap, count) != n);
+
+ if (intel_wait_complete(&waiters[n])) {
+ pr_err("waiter[%d, seqno=%d] completed too early\n",
+ n, waiters[n].seqno);
+ err = -EINVAL;
+ goto err;
+ }
+
+ /* complete the following waiters */
+ mock_seqno_advance(engine, seqno + 0x1000);
+ for (m = n; m <= seqno; m++) {
+ if (m == count)
+ break;
+
+ GEM_BUG_ON(!test_bit(m, bitmap));
+ __clear_bit(m, bitmap);
+ }
+
+ intel_engine_remove_wait(engine, &waiters[n]);
+ err = check_rbtree(engine, bitmap, waiters, count);
+ if (err) {
+ pr_err("completion after seqno advance to %d failed\n",
+ seqno);
+ goto err;
+ }
+ }
+
+ err = check_rbtree_empty(engine);
+err:
+ kfree(bitmap);
+out_waiters:
+ kfree(waiters);
+out_engines:
+ kfree(engine);
+out:
+ return err;
+}
+
int intel_breadcrumbs_selftest(void)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_random_insert_remove),
+ SUBTEST(igt_insert_complete),
};
return i915_subtests(tests, NULL);
--
2.10.2
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