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yaml
---
r: 174667
b: refs/heads/master
c: 98ffc41
h: refs/heads/master
i:
  174665: 8da5169
  174663: 9c769b7
v: v3
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Thomas Hellstrom authored and Dave Airlie committed Dec 10, 2009
1 parent c0ce086 commit aefc0ba
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Showing 5 changed files with 24 additions and 36 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 312ea8da049a1830aa50c6e00002e50e30df476e
refs/heads/master: 98ffc4158e12008102cb6ae242a7fc46f9243f0d
29 changes: 11 additions & 18 deletions trunk/drivers/gpu/drm/ttm/ttm_bo.c
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Original file line number Diff line number Diff line change
Expand Up @@ -125,7 +125,7 @@ int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo, bool interruptible)
ret = wait_event_interruptible(bo->event_queue,
atomic_read(&bo->reserved) == 0);
if (unlikely(ret != 0))
return -ERESTART;
return ret;
} else {
wait_event(bo->event_queue, atomic_read(&bo->reserved) == 0);
}
Expand Down Expand Up @@ -571,7 +571,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible,
spin_unlock(&bo->lock);

if (unlikely(ret != 0)) {
if (ret != -ERESTART) {
if (ret != -ERESTARTSYS) {
printk(KERN_ERR TTM_PFX
"Failed to expire sync object before "
"buffer eviction.\n");
Expand All @@ -588,7 +588,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible,
ret = ttm_bo_mem_space(bo, &placement, &evict_mem, interruptible,
no_wait);
if (ret) {
if (ret != -ERESTART)
if (ret != -ERESTARTSYS)
printk(KERN_ERR TTM_PFX
"Failed to find memory space for "
"buffer 0x%p eviction.\n", bo);
Expand All @@ -598,7 +598,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible,
ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, interruptible,
no_wait);
if (ret) {
if (ret != -ERESTART)
if (ret != -ERESTARTSYS)
printk(KERN_ERR TTM_PFX "Buffer eviction failed\n");
spin_lock(&glob->lru_lock);
if (evict_mem.mm_node) {
Expand Down Expand Up @@ -795,7 +795,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
uint32_t cur_flags = 0;
bool type_found = false;
bool type_ok = false;
bool has_eagain = false;
bool has_erestartsys = false;
struct drm_mm_node *node = NULL;
int i, ret;

Expand Down Expand Up @@ -882,28 +882,21 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
mem->mm_node->private = bo;
return 0;
}
if (ret == -ERESTART)
has_eagain = true;
if (ret == -ERESTARTSYS)
has_erestartsys = true;
}
ret = (has_eagain) ? -ERESTART : -ENOMEM;
ret = (has_erestartsys) ? -ERESTARTSYS : -ENOMEM;
return ret;
}
EXPORT_SYMBOL(ttm_bo_mem_space);

int ttm_bo_wait_cpu(struct ttm_buffer_object *bo, bool no_wait)
{
int ret = 0;

if ((atomic_read(&bo->cpu_writers) > 0) && no_wait)
return -EBUSY;

ret = wait_event_interruptible(bo->event_queue,
atomic_read(&bo->cpu_writers) == 0);

if (ret == -ERESTARTSYS)
ret = -ERESTART;

return ret;
return wait_event_interruptible(bo->event_queue,
atomic_read(&bo->cpu_writers) == 0);
}

int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
Expand Down Expand Up @@ -1673,7 +1666,7 @@ int ttm_bo_block_reservation(struct ttm_buffer_object *bo, bool interruptible,
ret = wait_event_interruptible
(bo->event_queue, atomic_read(&bo->reserved) == 0);
if (unlikely(ret != 0))
return -ERESTART;
return ret;
} else {
wait_event(bo->event_queue,
atomic_read(&bo->reserved) == 0);
Expand Down
7 changes: 1 addition & 6 deletions trunk/drivers/gpu/drm/ttm/ttm_bo_vm.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -114,7 +114,7 @@ static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
ret = ttm_bo_wait(bo, false, true, false);
spin_unlock(&bo->lock);
if (unlikely(ret != 0)) {
retval = (ret != -ERESTART) ?
retval = (ret != -ERESTARTSYS) ?
VM_FAULT_SIGBUS : VM_FAULT_NOPAGE;
goto out_unlock;
}
Expand Down Expand Up @@ -349,9 +349,6 @@ ssize_t ttm_bo_io(struct ttm_bo_device *bdev, struct file *filp,
switch (ret) {
case 0:
break;
case -ERESTART:
ret = -EINTR;
goto out_unref;
case -EBUSY:
ret = -EAGAIN;
goto out_unref;
Expand Down Expand Up @@ -421,8 +418,6 @@ ssize_t ttm_bo_fbdev_io(struct ttm_buffer_object *bo, const char __user *wbuf,
switch (ret) {
case 0:
break;
case -ERESTART:
return -EINTR;
case -EBUSY:
return -EAGAIN;
default:
Expand Down
14 changes: 7 additions & 7 deletions trunk/include/drm/ttm/ttm_bo_api.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -303,7 +303,7 @@ ttm_bo_reference(struct ttm_buffer_object *bo)
* Note: It might be necessary to block validations before the
* wait by reserving the buffer.
* Returns -EBUSY if no_wait is true and the buffer is busy.
* Returns -ERESTART if interrupted by a signal.
* Returns -ERESTARTSYS if interrupted by a signal.
*/
extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
bool interruptible, bool no_wait);
Expand All @@ -321,7 +321,7 @@ extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
* -EINVAL on invalid proposed placement.
* -ENOMEM on out-of-memory condition.
* -EBUSY if no_wait is true and buffer busy.
* -ERESTART if interrupted by a signal.
* -ERESTARTSYS if interrupted by a signal.
*/
extern int ttm_buffer_object_validate(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
Expand All @@ -347,7 +347,7 @@ extern void ttm_bo_unref(struct ttm_buffer_object **bo);
* waiting for buffer idle. This lock is recursive.
* Returns
* -EBUSY if the buffer is busy and no_wait is true.
* -ERESTART if interrupted by a signal.
* -ERESTARTSYS if interrupted by a signal.
*/

extern int
Expand Down Expand Up @@ -390,7 +390,7 @@ extern void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo);
* Returns
* -ENOMEM: Out of memory.
* -EINVAL: Invalid placement flags.
* -ERESTART: Interrupted by signal while sleeping waiting for resources.
* -ERESTARTSYS: Interrupted by signal while sleeping waiting for resources.
*/

extern int ttm_buffer_object_init(struct ttm_bo_device *bdev,
Expand Down Expand Up @@ -430,7 +430,7 @@ extern int ttm_buffer_object_init(struct ttm_bo_device *bdev,
* Returns
* -ENOMEM: Out of memory.
* -EINVAL: Invalid placement flags.
* -ERESTART: Interrupted by signal while waiting for resources.
* -ERESTARTSYS: Interrupted by signal while waiting for resources.
*/

extern int ttm_buffer_object_create(struct ttm_bo_device *bdev,
Expand Down Expand Up @@ -521,7 +521,7 @@ extern int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type);
*
* Returns:
* -EINVAL: Invalid or uninitialized memory type.
* -ERESTART: The call was interrupted by a signal while waiting to
* -ERESTARTSYS: The call was interrupted by a signal while waiting to
* evict a buffer.
*/

Expand Down Expand Up @@ -624,7 +624,7 @@ extern int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
* be called from the fops::read and fops::write method.
* Returns:
* See man (2) write, man(2) read. In particular,
* the function may return -EINTR if
* the function may return -ERESTARTSYS if
* interrupted by a signal.
*/

Expand Down
8 changes: 4 additions & 4 deletions trunk/include/drm/ttm/ttm_bo_driver.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -638,7 +638,7 @@ extern bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev,
* -EBUSY: No space available (only if no_wait == 1).
* -ENOMEM: Could not allocate memory for the buffer object, either due to
* fragmentation or concurrent allocators.
* -ERESTART: An interruptible sleep was interrupted by a signal.
* -ERESTARTSYS: An interruptible sleep was interrupted by a signal.
*/
extern int ttm_bo_mem_space(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
Expand All @@ -653,7 +653,7 @@ extern int ttm_bo_mem_space(struct ttm_buffer_object *bo,
* Wait until a buffer object is no longer sync'ed for CPU access.
* Returns:
* -EBUSY: Buffer object was sync'ed for CPU access. (only if no_wait == 1).
* -ERESTART: An interruptible sleep was interrupted by a signal.
* -ERESTARTSYS: An interruptible sleep was interrupted by a signal.
*/

extern int ttm_bo_wait_cpu(struct ttm_buffer_object *bo, bool no_wait);
Expand Down Expand Up @@ -757,7 +757,7 @@ extern void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo);
* -EAGAIN: The reservation may cause a deadlock.
* Release all buffer reservations, wait for @bo to become unreserved and
* try again. (only if use_sequence == 1).
* -ERESTART: A wait for the buffer to become unreserved was interrupted by
* -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
* a signal. Release all buffer reservations and return to user-space.
*/
extern int ttm_bo_reserve(struct ttm_buffer_object *bo,
Expand Down Expand Up @@ -798,7 +798,7 @@ extern int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo,
*
* Returns:
* -EBUSY: If no_wait == 1 and the buffer is already reserved.
* -ERESTART: If interruptible == 1 and the process received a signal
* -ERESTARTSYS: If interruptible == 1 and the process received a signal
* while sleeping.
*/
extern int ttm_bo_block_reservation(struct ttm_buffer_object *bo,
Expand Down

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