Exercise lite-restore (re-submit a context that is currently running),
by queueing several small batchbuffers.
This test helps to validate WaIdleLiteRestore.
Signed-off-by: Michel Thierry <michel.thierry@xxxxxxxxx>
---
tests/gem_ctx_exec.c | 30 +++++++++++++++++++++++++++++-
1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/tests/gem_ctx_exec.c b/tests/gem_ctx_exec.c
index 43b38a2..3df939c 100644
--- a/tests/gem_ctx_exec.c
+++ b/tests/gem_ctx_exec.c
@@ -155,7 +155,7 @@ static void big_exec(int fd, uint32_t handle, int ring)
uint32_t handle;
uint32_t batch[2] = {0, MI_BATCH_BUFFER_END};
-uint32_t ctx_id;
+uint32_t ctx_id, ctx_id2;
int fd;
igt_main
@@ -215,4 +215,32 @@ igt_main
gem_context_destroy(fd, ctx_id);
}
+
+ igt_subtest("lrc-lite-restore") {
+ int i, j;
+
+ /*
+ * Need 2 contexts to be able to replicate a lite restore,
+ * i.e. a running context is resubmitted.
+ */
+ ctx_id = gem_context_create(fd);
+ ctx_id2 = gem_context_create(fd);
+
+ /*
+ * Queue several small batchbuffers to be sure we'll send execlists
+ * with 2 valid context, and likely cause a lite restore when ctxB
+ * is resubmitted at the top of the new execlist.
+ */
+ for (i = 0; i < 20; i++) {
+ for (j = 0; j < 200; j++) {
+ igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) == 0);
+ igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id2) == 0);
+ }
+
+ gem_sync(fd, handle);
+ }
+
+ gem_context_destroy(fd, ctx_id);
+ gem_context_destroy(fd, ctx_id2);
+ }
}
--
2.3.5
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