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drm/ttm: Print debug information on memory manager when eviction fails

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This add helper function to print information on eviction placements
and memory manager status when eviction fails to allocate memory
space.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse 2009-12-09 21:55:10 +01:00 committed by Dave Airlie
parent 99d7e48e8c
commit fb53f8621a
1 changed files with 57 additions and 13 deletions
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70
drivers/gpu/drm/ttm/ttm_bo.c
View File

@ -59,6 +59,60 @@ static struct attribute ttm_bo_count = {
.mode = S_IRUGO
};
static inline int ttm_mem_type_from_flags(uint32_t flags, uint32_t *mem_type)
{
int i;
for (i = 0; i <= TTM_PL_PRIV5; i++)
if (flags & (1 << i)) {
*mem_type = i;
return 0;
}
return -EINVAL;
}
static void ttm_mem_type_manager_debug(struct ttm_bo_global *glob,
struct ttm_mem_type_manager *man)
{
printk(KERN_ERR TTM_PFX " has_type: %d\n", man->has_type);
printk(KERN_ERR TTM_PFX " use_type: %d\n", man->use_type);
printk(KERN_ERR TTM_PFX " flags: 0x%08X\n", man->flags);
printk(KERN_ERR TTM_PFX " gpu_offset: 0x%08lX\n", man->gpu_offset);
printk(KERN_ERR TTM_PFX " io_offset: 0x%08lX\n", man->io_offset);
printk(KERN_ERR TTM_PFX " io_size: %ld\n", man->io_size);
printk(KERN_ERR TTM_PFX " size: %ld\n", (unsigned long)man->size);
printk(KERN_ERR TTM_PFX " available_caching: 0x%08X\n",
man->available_caching);
printk(KERN_ERR TTM_PFX " default_caching: 0x%08X\n",
man->default_caching);
spin_lock(&glob->lru_lock);
drm_mm_debug_table(&man->manager, TTM_PFX);
spin_unlock(&glob->lru_lock);
}
static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo,
struct ttm_placement *placement)
{
struct ttm_bo_device *bdev = bo->bdev;
struct ttm_bo_global *glob = bo->glob;
struct ttm_mem_type_manager *man;
int i, ret, mem_type;
printk(KERN_ERR TTM_PFX "No space for %p (%ld pages, %ldK, %ldM)\n",
bo, bo->mem.num_pages, bo->mem.size >> 10,
bo->mem.size >> 20);
for (i = 0; i < placement->num_placement; i++) {
ret = ttm_mem_type_from_flags(placement->placement[i],
&mem_type);
if (ret)
return;
man = &bdev->man[mem_type];
printk(KERN_ERR TTM_PFX " placement[%d]=0x%08X (%d)\n",
i, placement->placement[i], mem_type);
ttm_mem_type_manager_debug(glob, man);
}
}
static ssize_t ttm_bo_global_show(struct kobject *kobj,
struct attribute *attr,
char *buffer)
@ -592,10 +646,12 @@ 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 != -ERESTARTSYS)
if (ret != -ERESTARTSYS) {
printk(KERN_ERR TTM_PFX
"Failed to find memory space for "
"buffer 0x%p eviction.\n", bo);
ttm_bo_mem_space_debug(bo, &placement);
}
goto out;
}
@ -768,18 +824,6 @@ static bool ttm_bo_mt_compatible(struct ttm_mem_type_manager *man,
return true;
}
static inline int ttm_mem_type_from_flags(uint32_t flags, uint32_t *mem_type)
{
int i;
for (i = 0; i <= TTM_PL_PRIV5; i++)
if (flags & (1 << i)) {
*mem_type = i;
return 0;
}
return -EINVAL;
}
/**
* Creates space for memory region @mem according to its type.
*