From: Jerome Glisse <jglisse@xxxxxxxxxx>
wakequeue is use in case we want to wait until we got something
that allow to allocate the object.
Signed-off-by: Christian König <deathsimple@xxxxxxxxxxx>
Signed-off-by: Jerome Glisse <jglisse@xxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon.h | 1 +
drivers/gpu/drm/radeon/radeon_gart.c | 2 +-
drivers/gpu/drm/radeon/radeon_object.h | 2 +-
drivers/gpu/drm/radeon/radeon_ring.c | 6 +++++-
drivers/gpu/drm/radeon/radeon_sa.c | 32 ++++++++++++++++++++++++++++++--
5 files changed, 38 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index ad12ef8..8a6dd46 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -382,6 +382,7 @@ struct radeon_bo_list {
*/
struct radeon_sa_manager {
struct mutex mutex;
+ wait_queue_head_t queue;
struct radeon_bo *bo;
struct list_head sa_bo;
unsigned size;
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index c58a036..7af4ff9 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -395,7 +395,7 @@ int radeon_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm)
retry:
r = radeon_sa_bo_new(rdev, &rdev->vm_manager.sa_manager, &vm->sa_bo,
RADEON_GPU_PAGE_ALIGN(vm->last_pfn * 8),
- RADEON_GPU_PAGE_SIZE);
+ RADEON_GPU_PAGE_SIZE, false);
if (r) {
if (list_empty(&rdev->vm_manager.lru_vm)) {
return r;
diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
index d9b9333..85f33d9 100644
--- a/drivers/gpu/drm/radeon/radeon_object.h
+++ b/drivers/gpu/drm/radeon/radeon_object.h
@@ -158,7 +158,7 @@ extern int radeon_sa_bo_manager_suspend(struct radeon_device *rdev,
extern int radeon_sa_bo_new(struct radeon_device *rdev,
struct radeon_sa_manager *sa_manager,
struct radeon_sa_bo *sa_bo,
- unsigned size, unsigned align);
+ unsigned size, unsigned align, bool block);
extern void radeon_sa_bo_free(struct radeon_device *rdev,
struct radeon_sa_bo *sa_bo);
#if defined(CONFIG_DEBUG_FS)
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index 1d9bce9..f8ecb3e 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -124,7 +124,7 @@ retry:
if (rdev->ib_pool.ibs[idx].fence == NULL) {
r = radeon_sa_bo_new(rdev, &rdev->ib_pool.sa_manager,
&rdev->ib_pool.ibs[idx].sa_bo,
- size, 256);
+ size, 256, false);
if (!r) {
*ib = &rdev->ib_pool.ibs[idx];
(*ib)->ptr = rdev->ib_pool.sa_manager.cpu_ptr;
@@ -222,6 +222,10 @@ int radeon_ib_pool_init(struct radeon_device *rdev)
return 0;
}
+ /* copy over the sa_manager we have to do this to silence
+ * kernel possible deadlock detection code to complain about
+ * a false positive
+ */
rdev->ib_pool.sa_manager = tmp;
INIT_LIST_HEAD(&rdev->ib_pool.sa_manager.sa_bo);
for (i = 0; i < RADEON_IB_POOL_SIZE; i++) {
diff --git a/drivers/gpu/drm/radeon/radeon_sa.c b/drivers/gpu/drm/radeon/radeon_sa.c
index 8c0b3e6..f7b20b1 100644
--- a/drivers/gpu/drm/radeon/radeon_sa.c
+++ b/drivers/gpu/drm/radeon/radeon_sa.c
@@ -38,6 +38,7 @@ int radeon_sa_bo_manager_init(struct radeon_device *rdev,
int r;
mutex_init(&sa_manager->mutex);
+ init_waitqueue_head(&sa_manager->queue);
sa_manager->bo = NULL;
sa_manager->size = size;
sa_manager->shole_size = 0;
@@ -61,6 +62,8 @@ void radeon_sa_bo_manager_fini(struct radeon_device *rdev,
{
struct radeon_sa_bo *sa_bo, *tmp;
+ wake_up_all(&sa_manager->queue);
+ mutex_lock(&sa_manager->mutex);
if (!list_empty(&sa_manager->sa_bo)) {
dev_err(rdev->dev, "sa_manager is not empty, clearing anyway\n");
}
@@ -69,6 +72,7 @@ void radeon_sa_bo_manager_fini(struct radeon_device *rdev,
}
radeon_bo_unref(&sa_manager->bo);
sa_manager->size = 0;
+ mutex_unlock(&sa_manager->mutex);
}
int radeon_sa_bo_manager_start(struct radeon_device *rdev,
@@ -117,6 +121,17 @@ int radeon_sa_bo_manager_suspend(struct radeon_device *rdev,
return r;
}
+static inline unsigned radeon_sa_bo_max_free(struct radeon_sa_manager *m,
+ unsigned align)
+{
+ unsigned start, end, wasted;
+
+ wasted = (align - (sa_manager->ehole_offset % align)) % align;
+ end = wasted > sa_manager->ehole_size ? 0 : sa_manager->ehole_size - wasted;
+ start = sa_manager->shole_size;
+ return start < end ? end : start;
+}
+
/*
* Principe is simple, we keep a list of sub allocation in offset
* order (first entry has offset == 0, last entry has the highest
@@ -135,13 +150,14 @@ int radeon_sa_bo_manager_suspend(struct radeon_device *rdev,
int radeon_sa_bo_new(struct radeon_device *rdev,
struct radeon_sa_manager *sa_manager,
struct radeon_sa_bo *sa_bo,
- unsigned size, unsigned align)
+ unsigned size, unsigned align, bool block)
{
unsigned offset = 0, wasted = 0;
BUG_ON(align > RADEON_GPU_PAGE_SIZE);
BUG_ON(size > sa_manager->size);
+retry:
mutex_lock(&sa_manager->mutex);
wasted = (align - (sa_manager->ehole_offset % align)) % align;
@@ -161,8 +177,20 @@ int radeon_sa_bo_new(struct radeon_device *rdev,
offset = 0;
goto out;
}
-
mutex_unlock(&sa_manager->mutex);
+
+ if (block) {
+ /* failed to find something big enough, wait
+ * for the biggest hole to increase in size
+ */
+ r = wait_event_interruptible(sa_manager->queue,
+ radeon_sa_bo_max_free(sa_manager, align) >= size);
+ if (r) {
+ return r;
+ }
+ goto retry;
+ }
+
return -ENOMEM;
out:
--
1.7.7.6
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