drm/i915/gem: Move freeze/freeze_late next to suspend/suspend_late

Push the hibernate pm routines next to the suspend pm routines in
gem/i915_gem_pm.c. This has the side-effect of putting the wbinvd()
abusers next to each other.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 30d2bfd ("drm/i915/gem: Almagamate clflushes on freeze")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210123145543.10533-1-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/gem/i915_gem_pm.c

@@ -85,6 +85,47 @@ void i915_gem_suspend_late(struct drm_i915_private *i915)
 		wbinvd_on_all_cpus();
 }
 
+int i915_gem_freeze(struct drm_i915_private *i915)
+{
+	/* Discard all purgeable objects, let userspace recover those as
+	 * required after resuming.
+	 */
+	i915_gem_shrink_all(i915);
+
+	return 0;
+}
+
+int i915_gem_freeze_late(struct drm_i915_private *i915)
+{
+	struct drm_i915_gem_object *obj;
+	intel_wakeref_t wakeref;
+
+	/*
+	 * Called just before we write the hibernation image.
+	 *
+	 * We need to update the domain tracking to reflect that the CPU
+	 * will be accessing all the pages to create and restore from the
+	 * hibernation, and so upon restoration those pages will be in the
+	 * CPU domain.
+	 *
+	 * To make sure the hibernation image contains the latest state,
+	 * we update that state just before writing out the image.
+	 *
+	 * To try and reduce the hibernation image, we manually shrink
+	 * the objects as well, see i915_gem_freeze()
+	 */
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref)
+		i915_gem_shrink(i915, -1UL, NULL, ~0);
+	i915_gem_drain_freed_objects(i915);
+
+	wbinvd_on_all_cpus();
+	list_for_each_entry(obj, &i915->mm.shrink_list, mm.link)
+		__start_cpu_write(obj);
+
+	return 0;
+}
+
 void i915_gem_resume(struct drm_i915_private *i915)
 {
 	GEM_TRACE("%s\n", dev_name(i915->drm.dev));

drivers/gpu/drm/i915/gem/i915_gem_pm.h

@@ -19,4 +19,7 @@ void i915_gem_idle_work_handler(struct work_struct *work);
 void i915_gem_suspend(struct drm_i915_private *i915);
 void i915_gem_suspend_late(struct drm_i915_private *i915);
 
+int i915_gem_freeze(struct drm_i915_private *i915);
+int i915_gem_freeze_late(struct drm_i915_private *i915);
+
 #endif /* __I915_GEM_PM_H__ */

drivers/gpu/drm/i915/i915_drv.c

@@ -64,6 +64,7 @@
 #include "gem/i915_gem_context.h"
 #include "gem/i915_gem_ioctls.h"
 #include "gem/i915_gem_mman.h"
+#include "gem/i915_gem_pm.h"
 #include "gt/intel_gt.h"
 #include "gt/intel_gt_pm.h"
 #include "gt/intel_rc6.h"

drivers/gpu/drm/i915/i915_drv.h

@@ -1807,8 +1807,6 @@ int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
 void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
 void i915_gem_init_early(struct drm_i915_private *dev_priv);
 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
-int i915_gem_freeze(struct drm_i915_private *dev_priv);
-int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
 
 struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915);
 

drivers/gpu/drm/i915/i915_gem.c

@@ -1145,47 +1145,6 @@ void i915_gem_cleanup_early(struct drm_i915_private *dev_priv)
 	drm_WARN_ON(&dev_priv->drm, dev_priv->mm.shrink_count);
 }
 
-int i915_gem_freeze(struct drm_i915_private *dev_priv)
-{
-	/* Discard all purgeable objects, let userspace recover those as
-	 * required after resuming.
-	 */
-	i915_gem_shrink_all(dev_priv);
-
-	return 0;
-}
-
-int i915_gem_freeze_late(struct drm_i915_private *i915)
-{
-	struct drm_i915_gem_object *obj;
-	intel_wakeref_t wakeref;
-
-	/*
-	 * Called just before we write the hibernation image.
-	 *
-	 * We need to update the domain tracking to reflect that the CPU
-	 * will be accessing all the pages to create and restore from the
-	 * hibernation, and so upon restoration those pages will be in the
-	 * CPU domain.
-	 *
-	 * To make sure the hibernation image contains the latest state,
-	 * we update that state just before writing out the image.
-	 *
-	 * To try and reduce the hibernation image, we manually shrink
-	 * the objects as well, see i915_gem_freeze()
-	 */
-
-	with_intel_runtime_pm(&i915->runtime_pm, wakeref)
-		i915_gem_shrink(i915, -1UL, NULL, ~0);
-	i915_gem_drain_freed_objects(i915);
-
-	wbinvd_on_all_cpus();
-	list_for_each_entry(obj, &i915->mm.shrink_list, mm.link)
-		__start_cpu_write(obj);
-
-	return 0;
-}
-
 int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file)
 {
 	struct drm_i915_file_private *file_priv;

drivers/gpu/drm/i915/selftests/i915_gem.c

@@ -8,6 +8,7 @@
 
 #include "gem/selftests/igt_gem_utils.h"
 #include "gem/selftests/mock_context.h"
+#include "gem/i915_gem_pm.h"
 #include "gt/intel_gt.h"
 #include "gt/intel_gt_pm.h"