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-rw-r--r--drivers/gpu/drm/i915/display/intel_display.c2
-rw-r--r--drivers/gpu/drm/i915/display/intel_frontbuffer.c16
-rw-r--r--drivers/gpu/drm/i915/display/intel_frontbuffer.h34
-rw-r--r--drivers/gpu/drm/i915/display/intel_overlay.c17
-rw-r--r--drivers/gpu/drm/i915/gem/i915_gem_clflush.c3
-rw-r--r--drivers/gpu/drm/i915/gem/i915_gem_domain.c4
-rw-r--r--drivers/gpu/drm/i915/gem/i915_gem_object.c26
-rw-r--r--drivers/gpu/drm/i915/gem/i915_gem_object.h23
-rw-r--r--drivers/gpu/drm/i915/gem/i915_gem_object_types.h2
-rw-r--r--drivers/gpu/drm/i915/gt/intel_gt_pm.c3
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c10
-rw-r--r--drivers/gpu/drm/i915/i915_pmu.c73
-rw-r--r--drivers/gpu/drm/i915/i915_pmu.h2
-rw-r--r--drivers/gpu/drm/i915/i915_vma.c10
14 files changed, 139 insertions, 86 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 6f5e3bd13ad1..effc4250b230 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -15112,7 +15112,7 @@ intel_prepare_plane_fb(struct drm_plane *plane,
return ret;
fb_obj_bump_render_priority(obj);
- intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_DIRTYFB);
+ i915_gem_object_flush_frontbuffer(obj, ORIGIN_DIRTYFB);
if (!new_plane_state->base.fence) { /* implicit fencing */
struct dma_fence *fence;
diff --git a/drivers/gpu/drm/i915/display/intel_frontbuffer.c b/drivers/gpu/drm/i915/display/intel_frontbuffer.c
index 84b164f31895..6cb02c912acc 100644
--- a/drivers/gpu/drm/i915/display/intel_frontbuffer.c
+++ b/drivers/gpu/drm/i915/display/intel_frontbuffer.c
@@ -229,11 +229,11 @@ static void frontbuffer_release(struct kref *ref)
vma->display_alignment = I915_GTT_MIN_ALIGNMENT;
spin_unlock(&obj->vma.lock);
- obj->frontbuffer = NULL;
+ RCU_INIT_POINTER(obj->frontbuffer, NULL);
spin_unlock(&to_i915(obj->base.dev)->fb_tracking.lock);
i915_gem_object_put(obj);
- kfree(front);
+ kfree_rcu(front, rcu);
}
struct intel_frontbuffer *
@@ -242,11 +242,7 @@ intel_frontbuffer_get(struct drm_i915_gem_object *obj)
struct drm_i915_private *i915 = to_i915(obj->base.dev);
struct intel_frontbuffer *front;
- spin_lock(&i915->fb_tracking.lock);
- front = obj->frontbuffer;
- if (front)
- kref_get(&front->ref);
- spin_unlock(&i915->fb_tracking.lock);
+ front = __intel_frontbuffer_get(obj);
if (front)
return front;
@@ -262,13 +258,13 @@ intel_frontbuffer_get(struct drm_i915_gem_object *obj)
i915_active_may_sleep(frontbuffer_retire));
spin_lock(&i915->fb_tracking.lock);
- if (obj->frontbuffer) {
+ if (rcu_access_pointer(obj->frontbuffer)) {
kfree(front);
- front = obj->frontbuffer;
+ front = rcu_dereference_protected(obj->frontbuffer, true);
kref_get(&front->ref);
} else {
i915_gem_object_get(obj);
- obj->frontbuffer = front;
+ rcu_assign_pointer(obj->frontbuffer, front);
}
spin_unlock(&i915->fb_tracking.lock);
diff --git a/drivers/gpu/drm/i915/display/intel_frontbuffer.h b/drivers/gpu/drm/i915/display/intel_frontbuffer.h
index adc64d61a4a5..6d41f5394425 100644
--- a/drivers/gpu/drm/i915/display/intel_frontbuffer.h
+++ b/drivers/gpu/drm/i915/display/intel_frontbuffer.h
@@ -27,10 +27,10 @@
#include <linux/atomic.h>
#include <linux/kref.h>
+#include "gem/i915_gem_object_types.h"
#include "i915_active.h"
struct drm_i915_private;
-struct drm_i915_gem_object;
enum fb_op_origin {
ORIGIN_GTT,
@@ -45,6 +45,7 @@ struct intel_frontbuffer {
atomic_t bits;
struct i915_active write;
struct drm_i915_gem_object *obj;
+ struct rcu_head rcu;
};
void intel_frontbuffer_flip_prepare(struct drm_i915_private *i915,
@@ -54,6 +55,35 @@ void intel_frontbuffer_flip_complete(struct drm_i915_private *i915,
void intel_frontbuffer_flip(struct drm_i915_private *i915,
unsigned frontbuffer_bits);
+void intel_frontbuffer_put(struct intel_frontbuffer *front);
+
+static inline struct intel_frontbuffer *
+__intel_frontbuffer_get(const struct drm_i915_gem_object *obj)
+{
+ struct intel_frontbuffer *front;
+
+ if (likely(!rcu_access_pointer(obj->frontbuffer)))
+ return NULL;
+
+ rcu_read_lock();
+ do {
+ front = rcu_dereference(obj->frontbuffer);
+ if (!front)
+ break;
+
+ if (unlikely(!kref_get_unless_zero(&front->ref)))
+ continue;
+
+ if (likely(front == rcu_access_pointer(obj->frontbuffer)))
+ break;
+
+ intel_frontbuffer_put(front);
+ } while (1);
+ rcu_read_unlock();
+
+ return front;
+}
+
struct intel_frontbuffer *
intel_frontbuffer_get(struct drm_i915_gem_object *obj);
@@ -119,6 +149,4 @@ void intel_frontbuffer_track(struct intel_frontbuffer *old,
struct intel_frontbuffer *new,
unsigned int frontbuffer_bits);
-void intel_frontbuffer_put(struct intel_frontbuffer *front);
-
#endif /* __INTEL_FRONTBUFFER_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index 848ce07a8ec2..8a98a1aa7adc 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -279,12 +279,21 @@ static void intel_overlay_flip_prepare(struct intel_overlay *overlay,
struct i915_vma *vma)
{
enum pipe pipe = overlay->crtc->pipe;
+ struct intel_frontbuffer *from = NULL, *to = NULL;
WARN_ON(overlay->old_vma);
- intel_frontbuffer_track(overlay->vma ? overlay->vma->obj->frontbuffer : NULL,
- vma ? vma->obj->frontbuffer : NULL,
- INTEL_FRONTBUFFER_OVERLAY(pipe));
+ if (overlay->vma)
+ from = intel_frontbuffer_get(overlay->vma->obj);
+ if (vma)
+ to = intel_frontbuffer_get(vma->obj);
+
+ intel_frontbuffer_track(from, to, INTEL_FRONTBUFFER_OVERLAY(pipe));
+
+ if (to)
+ intel_frontbuffer_put(to);
+ if (from)
+ intel_frontbuffer_put(from);
intel_frontbuffer_flip_prepare(overlay->i915,
INTEL_FRONTBUFFER_OVERLAY(pipe));
@@ -766,7 +775,7 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
ret = PTR_ERR(vma);
goto out_pin_section;
}
- intel_frontbuffer_flush(new_bo->frontbuffer, ORIGIN_DIRTYFB);
+ i915_gem_object_flush_frontbuffer(new_bo, ORIGIN_DIRTYFB);
if (!overlay->active) {
u32 oconfig;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_clflush.c b/drivers/gpu/drm/i915/gem/i915_gem_clflush.c
index b9f504ba3b32..18ee708585a9 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_clflush.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_clflush.c
@@ -20,7 +20,8 @@ static void __do_clflush(struct drm_i915_gem_object *obj)
{
GEM_BUG_ON(!i915_gem_object_has_pages(obj));
drm_clflush_sg(obj->mm.pages);
- intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_CPU);
+
+ i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
}
static int clflush_work(struct dma_fence_work *base)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_domain.c b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
index 9937b4c341f1..f86400a191b0 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_domain.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_domain.c
@@ -664,7 +664,7 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
i915_gem_object_unlock(obj);
if (write_domain)
- intel_frontbuffer_invalidate(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
out_unpin:
i915_gem_object_unpin_pages(obj);
@@ -784,7 +784,7 @@ int i915_gem_object_prepare_write(struct drm_i915_gem_object *obj,
}
out:
- intel_frontbuffer_invalidate(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
obj->mm.dirty = true;
/* return with the pages pinned */
return 0;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index a50296cce0d8..a596548c07bf 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -280,7 +280,7 @@ i915_gem_object_flush_write_domain(struct drm_i915_gem_object *obj,
for_each_ggtt_vma(vma, obj)
intel_gt_flush_ggtt_writes(vma->vm->gt);
- intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
for_each_ggtt_vma(vma, obj) {
if (vma->iomap)
@@ -308,6 +308,30 @@ i915_gem_object_flush_write_domain(struct drm_i915_gem_object *obj,
obj->write_domain = 0;
}
+void __i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
+ enum fb_op_origin origin)
+{
+ struct intel_frontbuffer *front;
+
+ front = __intel_frontbuffer_get(obj);
+ if (front) {
+ intel_frontbuffer_flush(front, origin);
+ intel_frontbuffer_put(front);
+ }
+}
+
+void __i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
+ enum fb_op_origin origin)
+{
+ struct intel_frontbuffer *front;
+
+ front = __intel_frontbuffer_get(obj);
+ if (front) {
+ intel_frontbuffer_invalidate(front, origin);
+ intel_frontbuffer_put(front);
+ }
+}
+
void i915_gem_init__objects(struct drm_i915_private *i915)
{
INIT_WORK(&i915->mm.free_work, __i915_gem_free_work);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index 458cd51331f1..4b93591fd5c7 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -13,8 +13,8 @@
#include <drm/i915_drm.h>
+#include "display/intel_frontbuffer.h"
#include "i915_gem_object_types.h"
-
#include "i915_gem_gtt.h"
void i915_gem_init__objects(struct drm_i915_private *i915);
@@ -463,4 +463,25 @@ int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
unsigned int flags,
const struct i915_sched_attr *attr);
+void __i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
+ enum fb_op_origin origin);
+void __i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
+ enum fb_op_origin origin);
+
+static inline void
+i915_gem_object_flush_frontbuffer(struct drm_i915_gem_object *obj,
+ enum fb_op_origin origin)
+{
+ if (unlikely(rcu_access_pointer(obj->frontbuffer)))
+ __i915_gem_object_flush_frontbuffer(obj, origin);
+}
+
+static inline void
+i915_gem_object_invalidate_frontbuffer(struct drm_i915_gem_object *obj,
+ enum fb_op_origin origin)
+{
+ if (unlikely(rcu_access_pointer(obj->frontbuffer)))
+ __i915_gem_object_invalidate_frontbuffer(obj, origin);
+}
+
#endif
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
index 96008374a412..e3f3944fbd90 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
@@ -150,7 +150,7 @@ struct drm_i915_gem_object {
*/
u16 write_domain;
- struct intel_frontbuffer *frontbuffer;
+ struct intel_frontbuffer __rcu *frontbuffer;
/** Current tiling stride for the object, if it's tiled. */
unsigned int tiling_and_stride;
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
index a459a42ad5c2..7e64b7d7d330 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
@@ -94,8 +94,9 @@ static int __gt_park(struct intel_wakeref *wf)
intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL);
}
+ /* Defer dropping the display power well for 100ms, it's slow! */
GEM_BUG_ON(!wakeref);
- intel_display_power_put(i915, POWER_DOMAIN_GT_IRQ, wakeref);
+ intel_display_power_put_async(i915, POWER_DOMAIN_GT_IRQ, wakeref);
i915_globals_park();
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index d034fa413164..905890e3ac24 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -161,7 +161,7 @@ i915_gem_phys_pwrite(struct drm_i915_gem_object *obj,
* We manually control the domain here and pretend that it
* remains coherent i.e. in the GTT domain, like shmem_pwrite.
*/
- intel_frontbuffer_invalidate(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
if (copy_from_user(vaddr, user_data, args->size))
return -EFAULT;
@@ -169,7 +169,7 @@ i915_gem_phys_pwrite(struct drm_i915_gem_object *obj,
drm_clflush_virt_range(vaddr, args->size);
intel_gt_chipset_flush(&to_i915(obj->base.dev)->gt);
- intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
return 0;
}
@@ -589,7 +589,7 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
goto out_unpin;
}
- intel_frontbuffer_invalidate(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_invalidate_frontbuffer(obj, ORIGIN_CPU);
user_data = u64_to_user_ptr(args->data_ptr);
offset = args->offset;
@@ -631,7 +631,7 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
user_data += page_length;
offset += page_length;
}
- intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
i915_gem_object_unlock_fence(obj, fence);
out_unpin:
@@ -721,7 +721,7 @@ i915_gem_shmem_pwrite(struct drm_i915_gem_object *obj,
offset = 0;
}
- intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_CPU);
+ i915_gem_object_flush_frontbuffer(obj, ORIGIN_CPU);
i915_gem_object_unlock_fence(obj, fence);
return ret;
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index 2814218c5ba1..6f09aa0be80a 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -144,61 +144,40 @@ static inline s64 ktime_since(const ktime_t kt)
return ktime_to_ns(ktime_sub(ktime_get(), kt));
}
-static u64 __pmu_estimate_rc6(struct i915_pmu *pmu)
-{
- u64 val;
-
- /*
- * We think we are runtime suspended.
- *
- * Report the delta from when the device was suspended to now,
- * on top of the last known real value, as the approximated RC6
- * counter value.
- */
- val = ktime_since(pmu->sleep_last);
- val += pmu->sample[__I915_SAMPLE_RC6].cur;
-
- pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur = val;
-
- return val;
-}
-
-static u64 __pmu_update_rc6(struct i915_pmu *pmu, u64 val)
-{
- /*
- * If we are coming back from being runtime suspended we must
- * be careful not to report a larger value than returned
- * previously.
- */
- if (val >= pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
- pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur = 0;
- pmu->sample[__I915_SAMPLE_RC6].cur = val;
- } else {
- val = pmu->sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
- }
-
- return val;
-}
-
static u64 get_rc6(struct intel_gt *gt)
{
struct drm_i915_private *i915 = gt->i915;
struct i915_pmu *pmu = &i915->pmu;
unsigned long flags;
+ bool awake = false;
u64 val;
- val = 0;
if (intel_gt_pm_get_if_awake(gt)) {
val = __get_rc6(gt);
intel_gt_pm_put_async(gt);
+ awake = true;
}
spin_lock_irqsave(&pmu->lock, flags);
- if (val)
- val = __pmu_update_rc6(pmu, val);
+ if (awake) {
+ pmu->sample[__I915_SAMPLE_RC6].cur = val;
+ } else {
+ /*
+ * We think we are runtime suspended.
+ *
+ * Report the delta from when the device was suspended to now,
+ * on top of the last known real value, as the approximated RC6
+ * counter value.
+ */
+ val = ktime_since(pmu->sleep_last);
+ val += pmu->sample[__I915_SAMPLE_RC6].cur;
+ }
+
+ if (val < pmu->sample[__I915_SAMPLE_RC6_LAST_REPORTED].cur)
+ val = pmu->sample[__I915_SAMPLE_RC6_LAST_REPORTED].cur;
else
- val = __pmu_estimate_rc6(pmu);
+ pmu->sample[__I915_SAMPLE_RC6_LAST_REPORTED].cur = val;
spin_unlock_irqrestore(&pmu->lock, flags);
@@ -210,20 +189,11 @@ static void park_rc6(struct drm_i915_private *i915)
struct i915_pmu *pmu = &i915->pmu;
if (pmu->enable & config_enabled_mask(I915_PMU_RC6_RESIDENCY))
- __pmu_update_rc6(pmu, __get_rc6(&i915->gt));
+ pmu->sample[__I915_SAMPLE_RC6].cur = __get_rc6(&i915->gt);
pmu->sleep_last = ktime_get();
}
-static void unpark_rc6(struct drm_i915_private *i915)
-{
- struct i915_pmu *pmu = &i915->pmu;
-
- /* Estimate how long we slept and accumulate that into rc6 counters */
- if (pmu->enable & config_enabled_mask(I915_PMU_RC6_RESIDENCY))
- __pmu_estimate_rc6(pmu);
-}
-
#else
static u64 get_rc6(struct intel_gt *gt)
@@ -232,7 +202,6 @@ static u64 get_rc6(struct intel_gt *gt)
}
static void park_rc6(struct drm_i915_private *i915) {}
-static void unpark_rc6(struct drm_i915_private *i915) {}
#endif
@@ -281,8 +250,6 @@ void i915_pmu_gt_unparked(struct drm_i915_private *i915)
*/
__i915_pmu_maybe_start_timer(pmu);
- unpark_rc6(i915);
-
spin_unlock_irq(&pmu->lock);
}
diff --git a/drivers/gpu/drm/i915/i915_pmu.h b/drivers/gpu/drm/i915/i915_pmu.h
index bf52e3983631..6c1647c5daf2 100644
--- a/drivers/gpu/drm/i915/i915_pmu.h
+++ b/drivers/gpu/drm/i915/i915_pmu.h
@@ -18,7 +18,7 @@ enum {
__I915_SAMPLE_FREQ_ACT = 0,
__I915_SAMPLE_FREQ_REQ,
__I915_SAMPLE_RC6,
- __I915_SAMPLE_RC6_ESTIMATED,
+ __I915_SAMPLE_RC6_LAST_REPORTED,
__I915_NUM_PMU_SAMPLERS
};
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index e5512f26e20a..01c822256b39 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -1104,8 +1104,14 @@ int i915_vma_move_to_active(struct i915_vma *vma,
return err;
if (flags & EXEC_OBJECT_WRITE) {
- if (intel_frontbuffer_invalidate(obj->frontbuffer, ORIGIN_CS))
- i915_active_add_request(&obj->frontbuffer->write, rq);
+ struct intel_frontbuffer *front;
+
+ front = __intel_frontbuffer_get(obj);
+ if (unlikely(front)) {
+ if (intel_frontbuffer_invalidate(front, ORIGIN_CS))
+ i915_active_add_request(&front->write, rq);
+ intel_frontbuffer_put(front);
+ }
dma_resv_add_excl_fence(vma->resv, &rq->fence);
obj->write_domain = I915_GEM_DOMAIN_RENDER;