To prevent deadlocks under extreme conditions.
Signed-off-by: Christian König <deathsimple@xxxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon.h | 1 +
drivers/gpu/drm/radeon/radeon_gart.c | 2 +-
drivers/gpu/drm/radeon/radeon_object.h | 3 ++-
drivers/gpu/drm/radeon/radeon_ring.c | 2 +-
drivers/gpu/drm/radeon/radeon_sa.c | 15 ++++++++++++---
5 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index e71dc67..4f7e941 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -389,6 +389,7 @@ struct radeon_sa_manager {
uint64_t gpu_addr;
void *cpu_ptr;
uint32_t domain;
+ void (*try_free)(struct radeon_device *);
};
/* sub-allocation buffer */
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index 7af4ff9..fba3884 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -291,7 +291,7 @@ int radeon_vm_manager_init(struct radeon_device *rdev)
/* mark first vm as always in use, it's the system one */
r = radeon_sa_bo_manager_init(rdev, &rdev->vm_manager.sa_manager,
rdev->vm_manager.max_pfn * 8,
- RADEON_GEM_DOMAIN_VRAM);
+ RADEON_GEM_DOMAIN_VRAM, NULL);
if (r) {
dev_err(rdev->dev, "failed to allocate vm bo (%dKB)\n",
(rdev->vm_manager.max_pfn * 8) >> 10);
diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
index 85f33d9..08505ed 100644
--- a/drivers/gpu/drm/radeon/radeon_object.h
+++ b/drivers/gpu/drm/radeon/radeon_object.h
@@ -148,7 +148,8 @@ extern struct radeon_bo_va *radeon_bo_va(struct radeon_bo *rbo,
*/
extern int radeon_sa_bo_manager_init(struct radeon_device *rdev,
struct radeon_sa_manager *sa_manager,
- unsigned size, u32 domain);
+ unsigned size, u32 domain,
+ void (*try_free)(struct radeon_device *rdev));
extern void radeon_sa_bo_manager_fini(struct radeon_device *rdev,
struct radeon_sa_manager *sa_manager);
extern int radeon_sa_bo_manager_start(struct radeon_device *rdev,
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index ccee74f..ae28129 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -216,7 +216,7 @@ int radeon_ib_pool_init(struct radeon_device *rdev)
r = radeon_sa_bo_manager_init(rdev, &rdev->ib_pool.sa_manager,
RADEON_IB_POOL_SIZE*64*1024,
- RADEON_GEM_DOMAIN_GTT);
+ RADEON_GEM_DOMAIN_GTT, NULL);
if (r) {
return r;
}
diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c
index 92ab7b4..9d3e70a 100644
--- a/drivers/gpu/drm/radeon/radeon_sa.c
+++ b/drivers/gpu/drm/radeon/radeon_sa.c
@@ -34,7 +34,8 @@
int radeon_sa_bo_manager_init(struct radeon_device *rdev,
struct radeon_sa_manager *sa_manager,
- unsigned size, u32 domain)
+ unsigned size, u32 domain,
+ void (*try_free)(struct radeon_device *rdev))
{
int r;
@@ -43,6 +44,7 @@ int radeon_sa_bo_manager_init(struct radeon_device *rdev,
sa_manager->size = size;
sa_manager->biggest_hole = &sa_manager->sa_bo;
sa_manager->domain = domain;
+ sa_manager->try_free = try_free;
INIT_LIST_HEAD(&sa_manager->sa_bo);
r = radeon_bo_create(rdev, size, RADEON_GPU_PAGE_SIZE, true,
@@ -224,8 +226,15 @@ int radeon_sa_bo_new(struct radeon_device *rdev,
}
if (block) {
- /* failed to find something big enough, wait
- for the biggest hole to increase in size */
+ /* failed to find something big enough */
+ if (sa_manager->try_free) {
+ /* try to free something */
+ spin_unlock_irq(&sa_manager->queue.lock);
+ sa_manager->try_free(rdev);
+ spin_lock_irq(&sa_manager->queue.lock);
+ }
+
+ /* and wait for the biggest hole to increase in size */
r = wait_event_interruptible_locked_irq(sa_manager->queue,
radeon_sa_bo_min_free(sa_manager, align) >= size
);
--
1.7.5.4
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