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dma-buf: heaps: rk_system_heap: Don't zero pages when dma_buf_release

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Remove system_heap_zero_buffer to fix frame drops during startup animation

Change-Id: Ide81c251166b4246c66af699197d7c2476a741a3
Signed-off-by: Simon Xue <xxm@rock-chips.com>
This commit is contained in:
Simon Xue
2025-05-08 16:58:56 +08:00
parent 5507bbd8e3
commit fa31487d66
1 changed files with 0 additions and 21 deletions
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21
drivers/dma-buf/heaps/rk_system_heap.c
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@@ -416,24 +416,6 @@ static void system_heap_vunmap(struct dma_buf *dmabuf, struct iosys_map *map)
iosys_map_clear(map);
}
static int system_heap_zero_buffer(struct system_heap_buffer *buffer)
{
struct sg_table *sgt = &buffer->sg_table;
struct sg_page_iter piter;
struct page *p;
void *vaddr;
int ret = 0;
for_each_sgtable_page(sgt, &piter, 0) {
p = sg_page_iter_page(&piter);
vaddr = kmap_local_page(p);
memset(vaddr, 0, PAGE_SIZE);
kunmap_local(vaddr);
}
return ret;
}
static void system_heap_dma_buf_release(struct dma_buf *dmabuf)
{
struct system_heap_buffer *buffer = dmabuf->priv;
@@ -441,9 +423,6 @@ static void system_heap_dma_buf_release(struct dma_buf *dmabuf)
struct scatterlist *sg;
int i, j;
/* Zero the buffer pages before adding back to the pool */
system_heap_zero_buffer(buffer);
table = &buffer->sg_table;
for_each_sgtable_sg(table, sg, i) {
struct page *page = sg_page(sg);