From 0b4bf7ca9be824dde6ff63dd2ceba2d1367f8a58 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 11 Oct 2018 11:37:48 +0100
Subject: drm/i915/selftests: Disable shrinker across mmap-exhaustion
Git-commit: 0b4bf7ca9be824dde6ff63dd2ceba2d1367f8a58
Patch-mainline: v5.0-rc1
References: bsc#1113956
For mmap-exhaustion, we deliberately put the system under a large amount
of pressure to ensure that we are able to reap mmap-offsets from dead
objects. If background activity does that reaping for us, that defeats
the purpose of the test and in some cases will fail our sanity checks
(because of the fake activity we use to prevent the idle worker).
Fixes: 932cac10c8fb ("drm/i915/selftests: Prevent background reaping of acti
ve objects")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181011103748.18387-1-chris@chris-wilson.co.uk
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/selftests/i915_gem_object.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_object.c b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
index 6d3516d5bff9..c3999dd2021e 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
@@ -501,6 +501,8 @@ static bool assert_mmap_offset(struct drm_i915_private *i915,
static void disable_retire_worker(struct drm_i915_private *i915)
{
+ i915_gem_shrinker_unregister(i915);
+
mutex_lock(&i915->drm.struct_mutex);
if (!i915->gt.active_requests++) {
intel_runtime_pm_get(i915);
@@ -613,6 +615,7 @@ static int igt_mmap_offset_exhaustion(void *arg)
else
queue_delayed_work(i915->wq, &i915->gt.idle_work, 0);
mutex_unlock(&i915->drm.struct_mutex);
+ i915_gem_shrinker_register(i915);
return err;
err_obj:
i915_gem_object_put(obj);
--
2.20.1