panfrost: Split up batches with many jobs

If there are too many jobs in a batch, split it. Although the GPU
theoretically supports 65536 jobs in a batch, set the threshold lower
to avoid GPU timeouts.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8130>

src/gallium/drivers/panfrost/pan_context.c

@@ -493,6 +493,11 @@ panfrost_draw_vbo(
         /* Now that we have a guaranteed terminating path, find the job. */
 
         struct panfrost_batch *batch = panfrost_get_batch_for_fbo(ctx);
+
+        /* Don't add too many jobs to a single batch */
+        if (batch->scoreboard.job_index > 10000)
+                batch = panfrost_get_fresh_batch_for_fbo(ctx);
+
         panfrost_batch_set_requirements(batch);
 
         /* Take into account a negative bias */