From 6582f4f613e35225c663fc1194b1a7d1f0af2a2f Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 4 Jul 2019 17:53:17 +0100
Subject: drm/i915/selftests: Drain the freedlists between exec passes
Git-commit: 6582f4f613e35225c663fc1194b1a7d1f0af2a2f
Patch-mainline: v5.4-rc1
References: bsc#1152489

During the context execution tests, we issue a lot of work and discard a
lot of objects without releasing the lock and allowing the background
reaper to free those objects. Insert a small break between each pass to
flush the worker.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190704165317.21060-1-chris@chris-wilson.co.uk
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index a23c6df9b9f4..91d13f019265 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -562,6 +562,8 @@ static int igt_ctx_exec(void *arg)
 		mock_file_free(i915, file);
 		if (err)
 			return err;
+
+		i915_gem_drain_freed_objects(i915);
 	}
 
 	return 0;
@@ -672,6 +674,10 @@ static int igt_shared_ctx_exec(void *arg)
 
 			dw += rem;
 		}
+
+		mutex_unlock(&i915->drm.struct_mutex);
+		i915_gem_drain_freed_objects(i915);
+		mutex_lock(&i915->drm.struct_mutex);
 	}
 out_test:
 	if (igt_live_test_end(&t))
-- 
2.28.0