const struct drm_i915_gem_object_ops *ops,
struct lock_class_key *key, unsigned flags)
{
- mutex_init(&obj->mm.lock);
-
spin_lock_init(&obj->vma.lock);
INIT_LIST_HEAD(&obj->vma.list);
*/
if (IS_ENABLED(CONFIG_LOCKDEP) &&
kref_read(&obj->base.refcount) > 0)
- lockdep_assert_held(&obj->mm.lock);
+ assert_object_held(obj);
}
static inline int __i915_gem_object_lock(struct drm_i915_gem_object *obj,
static inline int __must_check
i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
{
- might_lock(&obj->mm.lock);
+ assert_object_held(obj);
if (atomic_inc_not_zero(&obj->mm.pages_pin_count))
return 0;
}
int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj);
-int __i915_gem_object_put_pages_locked(struct drm_i915_gem_object *obj);
void i915_gem_object_truncate(struct drm_i915_gem_object *obj);
void i915_gem_object_writeback(struct drm_i915_gem_object *obj);
* Protects the pages and their use. Do not use directly, but
* instead go through the pin/unpin interfaces.
*/
- struct mutex lock;
atomic_t pages_pin_count;
atomic_t shrink_pin;
struct list_head *list;
unsigned long flags;
- lockdep_assert_held(&obj->mm.lock);
+ assert_object_held(obj);
spin_lock_irqsave(&i915->mm.obj_lock, flags);
i915->mm.shrink_count++;
{
int err;
- err = mutex_lock_interruptible(&obj->mm.lock);
- if (err)
- return err;
+ assert_object_held(obj);
assert_object_held_shared(obj);
err = ____i915_gem_object_get_pages(obj);
if (err)
- goto unlock;
+ return err;
smp_mb__before_atomic();
}
atomic_inc(&obj->mm.pages_pin_count);
-unlock:
- mutex_unlock(&obj->mm.lock);
- return err;
+ return 0;
}
int i915_gem_object_pin_pages_unlocked(struct drm_i915_gem_object *obj)
return pages;
}
-int __i915_gem_object_put_pages_locked(struct drm_i915_gem_object *obj)
+int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj)
{
struct sg_table *pages;
return 0;
}
-int __i915_gem_object_put_pages(struct drm_i915_gem_object *obj)
-{
- int err;
-
- if (i915_gem_object_has_pinned_pages(obj))
- return -EBUSY;
-
- /* May be called by shrinker from within get_pages() (on another bo) */
- mutex_lock(&obj->mm.lock);
- err = __i915_gem_object_put_pages_locked(obj);
- mutex_unlock(&obj->mm.lock);
-
- return err;
-}
-
/* The 'mapping' part of i915_gem_object_pin_map() below */
static void *i915_gem_object_map_page(struct drm_i915_gem_object *obj,
enum i915_map_type type)
!i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_IOMEM))
return ERR_PTR(-ENXIO);
- err = mutex_lock_interruptible(&obj->mm.lock);
- if (err)
- return ERR_PTR(err);
+ assert_object_held(obj);
pinned = !(type & I915_MAP_OVERRIDE);
type &= ~I915_MAP_OVERRIDE;
GEM_BUG_ON(i915_gem_object_has_pinned_pages(obj));
err = ____i915_gem_object_get_pages(obj);
- if (err) {
- ptr = ERR_PTR(err);
- goto out_unlock;
- }
+ if (err)
+ return ERR_PTR(err);
smp_mb__before_atomic();
}
obj->mm.mapping = page_pack_bits(ptr, type);
}
-out_unlock:
- mutex_unlock(&obj->mm.lock);
return ptr;
err_unpin:
atomic_dec(&obj->mm.pages_pin_count);
- goto out_unlock;
+ return ptr;
}
void *i915_gem_object_pin_map_unlocked(struct drm_i915_gem_object *obj,
if (err)
return err;
- err = mutex_lock_interruptible(&obj->mm.lock);
- if (err)
- return err;
-
- if (unlikely(!i915_gem_object_has_struct_page(obj)))
- goto out;
-
- if (obj->mm.madv != I915_MADV_WILLNEED) {
- err = -EFAULT;
- goto out;
- }
+ if (obj->mm.madv != I915_MADV_WILLNEED)
+ return -EFAULT;
- if (i915_gem_object_has_tiling_quirk(obj)) {
- err = -EFAULT;
- goto out;
- }
+ if (i915_gem_object_has_tiling_quirk(obj))
+ return -EFAULT;
- if (obj->mm.mapping || i915_gem_object_has_pinned_pages(obj)) {
- err = -EBUSY;
- goto out;
- }
+ if (obj->mm.mapping || i915_gem_object_has_pinned_pages(obj))
+ return -EBUSY;
if (unlikely(obj->mm.madv != I915_MADV_WILLNEED)) {
drm_dbg(obj->base.dev,
"Attempting to obtain a purgeable object\n");
- err = -EFAULT;
- goto out;
+ return -EFAULT;
}
- err = i915_gem_object_shmem_to_phys(obj);
-
-out:
- mutex_unlock(&obj->mm.lock);
- return err;
+ return i915_gem_object_shmem_to_phys(obj);
}
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
*/
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
- i915_gem_shrink(i915, -1UL, NULL, ~0);
+ i915_gem_shrink(NULL, i915, -1UL, NULL, ~0);
i915_gem_drain_freed_objects(i915);
wbinvd_on_all_cpus();
goto err_sg;
}
- i915_gem_shrink(i915, 2 * page_count, NULL, *s++);
+ i915_gem_shrink(NULL, i915, 2 * page_count, NULL, *s++);
/*
* We've tried hard to allocate the memory by reaping
* The number of pages of backing storage actually released.
*/
unsigned long
-i915_gem_shrink(struct drm_i915_private *i915,
+i915_gem_shrink(struct i915_gem_ww_ctx *ww,
+ struct drm_i915_private *i915,
unsigned long target,
unsigned long *nr_scanned,
unsigned int shrink)
intel_wakeref_t wakeref = 0;
unsigned long count = 0;
unsigned long scanned = 0;
+ int err;
trace_i915_gem_shrink(i915, target, shrink);
spin_unlock_irqrestore(&i915->mm.obj_lock, flags);
- if (unsafe_drop_pages(obj, shrink) &&
- mutex_trylock(&obj->mm.lock)) {
+ err = 0;
+ if (unsafe_drop_pages(obj, shrink)) {
/* May arrive from get_pages on another bo */
- if (!__i915_gem_object_put_pages_locked(obj)) {
+ if (!ww) {
+ if (!i915_gem_object_trylock(obj))
+ goto skip;
+ } else {
+ err = i915_gem_object_lock(obj, ww);
+ if (err)
+ goto skip;
+ }
+
+ if (!__i915_gem_object_put_pages(obj)) {
try_to_writeback(obj, shrink);
count += obj->base.size >> PAGE_SHIFT;
}
- mutex_unlock(&obj->mm.lock);
+ if (!ww)
+ i915_gem_object_unlock(obj);
}
dma_resv_prune(obj->base.resv);
scanned += obj->base.size >> PAGE_SHIFT;
+skip:
i915_gem_object_put(obj);
spin_lock_irqsave(&i915->mm.obj_lock, flags);
+ if (err)
+ break;
}
list_splice_tail(&still_in_list, phase->list);
spin_unlock_irqrestore(&i915->mm.obj_lock, flags);
+ if (err)
+ return err;
}
if (shrink & I915_SHRINK_BOUND)
unsigned long freed = 0;
with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
- freed = i915_gem_shrink(i915, -1UL, NULL,
+ freed = i915_gem_shrink(NULL, i915, -1UL, NULL,
I915_SHRINK_BOUND |
I915_SHRINK_UNBOUND);
}
sc->nr_scanned = 0;
- freed = i915_gem_shrink(i915,
+ freed = i915_gem_shrink(NULL, i915,
sc->nr_to_scan,
&sc->nr_scanned,
I915_SHRINK_BOUND |
intel_wakeref_t wakeref;
with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
- freed += i915_gem_shrink(i915,
+ freed += i915_gem_shrink(NULL, i915,
sc->nr_to_scan - sc->nr_scanned,
&sc->nr_scanned,
I915_SHRINK_ACTIVE |
freed_pages = 0;
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
- freed_pages += i915_gem_shrink(i915, -1UL, NULL,
+ freed_pages += i915_gem_shrink(NULL, i915, -1UL, NULL,
I915_SHRINK_BOUND |
I915_SHRINK_UNBOUND |
I915_SHRINK_WRITEBACK);
intel_wakeref_t wakeref;
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
- freed_pages += i915_gem_shrink(i915, -1UL, NULL,
+ freed_pages += i915_gem_shrink(NULL, i915, -1UL, NULL,
I915_SHRINK_BOUND |
I915_SHRINK_UNBOUND |
I915_SHRINK_VMAPS);
#include <linux/bits.h>
struct drm_i915_private;
+struct i915_gem_ww_ctx;
struct mutex;
/* i915_gem_shrinker.c */
-unsigned long i915_gem_shrink(struct drm_i915_private *i915,
+unsigned long i915_gem_shrink(struct i915_gem_ww_ctx *ww,
+ struct drm_i915_private *i915,
unsigned long target,
unsigned long *nr_scanned,
unsigned flags);
* pages to prevent them being swapped out and causing corruption
* due to the change in swizzling.
*/
- mutex_lock(&obj->mm.lock);
if (i915_gem_object_has_pages(obj) &&
obj->mm.madv == I915_MADV_WILLNEED &&
i915->quirks & QUIRK_PIN_SWIZZLED_PAGES) {
i915_gem_object_set_tiling_quirk(obj);
}
}
- mutex_unlock(&obj->mm.lock);
spin_lock(&obj->vma.lock);
for_each_ggtt_vma(vma, obj) {
if (GEM_WARN_ON(i915_gem_object_has_pinned_pages(obj)))
return -EBUSY;
- mutex_lock(&obj->mm.lock);
+ assert_object_held(obj);
pages = __i915_gem_object_unset_pages(obj);
if (!IS_ERR_OR_NULL(pages))
if (get_pages)
err = ____i915_gem_object_get_pages(obj);
- mutex_unlock(&obj->mm.lock);
return err;
}
fs_reclaim_acquire(GFP_KERNEL);
if (val & DROP_BOUND)
- i915_gem_shrink(i915, LONG_MAX, NULL, I915_SHRINK_BOUND);
+ i915_gem_shrink(NULL, i915, LONG_MAX, NULL, I915_SHRINK_BOUND);
if (val & DROP_UNBOUND)
- i915_gem_shrink(i915, LONG_MAX, NULL, I915_SHRINK_UNBOUND);
+ i915_gem_shrink(NULL, i915, LONG_MAX, NULL, I915_SHRINK_UNBOUND);
if (val & DROP_SHRINK_ALL)
i915_gem_shrink_all(i915);
if (err)
goto out;
- err = mutex_lock_interruptible(&obj->mm.lock);
- if (err)
- goto out_ww;
-
if (i915_gem_object_has_pages(obj) &&
i915_gem_object_is_tiled(obj) &&
i915->quirks & QUIRK_PIN_SWIZZLED_PAGES) {
i915_gem_object_truncate(obj);
args->retained = obj->mm.madv != __I915_MADV_PURGED;
- mutex_unlock(&obj->mm.lock);
-out_ww:
i915_gem_object_unlock(obj);
out:
i915_gem_object_put(obj);
* the DMA remapper, i915_gem_shrink will return 0.
*/
GEM_BUG_ON(obj->mm.pages == pages);
- } while (i915_gem_shrink(to_i915(obj->base.dev),
+ } while (i915_gem_shrink(NULL, to_i915(obj->base.dev),
obj->base.size >> PAGE_SHIFT, NULL,
I915_SHRINK_BOUND |
I915_SHRINK_UNBOUND));