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gpu: ion: Switch to using kmalloc rather than kmap during allocation

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Previously, metadata was stored in the allocated pages themselves
during allocation.  However the system can only have a limited
number of kmapped pages.  A very large allocation might exceed
this limit.

Change-Id: Ibe972096e83924bf5e621d8282c4cd133ca75b0a
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
This commit is contained in:
Rebecca Schultz Zavin
2012-08-21 21:35:20 -07:00
committed by Arve Hjønnevåg
parent e91e991e13
commit 9993b96e30
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/ion/ion_system_heap.c
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@@ -46,7 +46,7 @@ static struct page_info *alloc_largest_available(unsigned long size)
if (!page)
continue;
split_page(page, orders[i]);
info = kmap(page);
info = kmalloc(sizeof(struct page_info *), GFP_KERNEL);
info->page = page;
info->order = orders[i];
return info;
@@ -93,7 +93,7 @@ static int ion_system_heap_allocate(struct ion_heap *heap,
}
list_del(&info->list);
memset(info, 0, sizeof(struct page_info));
kunmap(page);
kfree(info);
}
dma_sync_sg_for_device(NULL, table->sgl, table->nents,
@@ -107,7 +107,7 @@ err:
list_for_each_entry(info, &pages, list) {
for (i = 0; i < (1 << info->order); i++)
__free_page(info->page + i);
kunmap(info->page);
kfree(info);
}
return -ENOMEM;
}