diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/drm_os_linux.h | 55 |
1 files changed, 43 insertions, 12 deletions
diff --git a/linux-core/drm_os_linux.h b/linux-core/drm_os_linux.h index cb304398..cf003137 100644 --- a/linux-core/drm_os_linux.h +++ b/linux-core/drm_os_linux.h @@ -44,16 +44,47 @@ #define DRM_MALLOC(x) kmalloc(x, GFP_KERNEL) #define DRM_FREE(x) kfree(x) -#define DRM_GETSAREA() \ -do { \ - struct list_head *list; \ - list_for_each( list, &dev->maplist->head ) { \ - drm_map_list_t *entry = (drm_map_list_t *)list; \ - if ( entry->map && \ - entry->map->type == _DRM_SHM && \ - (entry->map->flags & _DRM_CONTAINS_LOCK) ) { \ - dev_priv->sarea = entry->map; \ - break; \ - } \ - } \ +#define DRM_GETSAREA() \ +do { \ + struct list_head *list; \ + list_for_each( list, &dev->maplist->head ) { \ + drm_map_list_t *entry = (drm_map_list_t *)list; \ + if ( entry->map && \ + entry->map->type == _DRM_SHM && \ + (entry->map->flags & _DRM_CONTAINS_LOCK) ) { \ + dev_priv->sarea = entry->map; \ + break; \ + } \ + } \ } while (0) + +#define DRM_HZ HZ + +#define DRM_WAIT_ON( ret, queue, timeout, condition ) \ +do { \ + DECLARE_WAITQUEUE(entry, current); \ + unsigned long end = jiffies + (timeout); \ + add_wait_queue(&(queue), &entry); \ + \ + for (;;) { \ + current->state = TASK_INTERRUPTIBLE; \ + if (condition) \ + break; \ + if((signed)(end - jiffies) <= 0) { \ + ret = -EBUSY; \ + break; \ + } \ + schedule_timeout(max(HZ/100,1)); \ + if (signal_pending(current)) { \ + ret = -EINTR; \ + break; \ + } \ + } \ + current->state = TASK_RUNNING; \ + remove_wait_queue(&(queue), &entry); \ +} while (0) + + +#define DRM_WAKEUP( queue ) wake_up_interruptible( queue ) +#define DRM_INIT_WAITQUEUE( queue ) init_waitqueue_head( queue ) + |