[Intel-gfx] [PATCH] drm/i915/gem: Move freeze/freeze_late next to suspend/suspend_late
Chris Wilson
chris at chris-wilson.co.uk
Sat Jan 23 14:55:43 UTC 2021
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 at roeck-us.net>
Fixes: 30d2bfd09383 ("drm/i915/gem: Almagamate clflushes on freeze")
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld at intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_pm.c | 41 +++++++++++++++++++++++
drivers/gpu/drm/i915/gem/i915_gem_pm.h | 3 ++
drivers/gpu/drm/i915/i915_drv.c | 1 +
drivers/gpu/drm/i915/i915_drv.h | 2 --
drivers/gpu/drm/i915/i915_gem.c | 41 -----------------------
drivers/gpu/drm/i915/selftests/i915_gem.c | 1 +
6 files changed, 46 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pm.c b/drivers/gpu/drm/i915/gem/i915_gem_pm.c
index 215766cc22bf..000e1cd8e920 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pm.c
+++ b/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));
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pm.h b/drivers/gpu/drm/i915/gem/i915_gem_pm.h
index 26b78dbdc225..c9a66630e92e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pm.h
+++ b/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__ */
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b37b189e219c..6bc514cd1682 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -65,6 +65,7 @@
#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"
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7efb501e22d2..dcc8c054f7c0 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1830,8 +1830,6 @@ 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);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 9b04dff5eb32..aa4490934469 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/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;
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c
index 412e21604a05..dc394fb7ccfa 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem.c
+++ b/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"
--
2.20.1
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