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wandboard: improve memory usage of ethernet driver

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Use a 8K slab entry instead of 16K slab entry, per 2K
network packet.

Issue #2665
This commit is contained in:
Alexander Boettcher 2018-03-26 14:07:52 +02:00 committed by Christian Helmuth
parent fce15b4f13
commit de82980e89
1 changed files with 13 additions and 9 deletions
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22
repos/dde_linux/src/drivers/nic/fec/lx_emul.cc
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@ -403,13 +403,16 @@ void *kmem_cache_alloc_node(struct kmem_cache *cache, gfp_t, int)
}
void get_page(struct page *page)
{
atomic_inc(&page->_count);
}
struct page *alloc_pages(gfp_t gfp_mask, unsigned int order)
static struct page *allocate_pages(gfp_t gfp_mask, size_t const size)
{
struct page *page = (struct page *)kzalloc(sizeof(struct page), 0);
size_t size = PAGE_SIZE << order;
page->addr = Lx::Malloc::dma().alloc(size, 12);
if (!page->addr) {
@ -426,17 +429,18 @@ struct page *alloc_pages(gfp_t gfp_mask, unsigned int order)
}
void get_page(struct page *page)
struct page *alloc_pages(gfp_t gfp_mask, unsigned int order)
{
atomic_inc(&page->_count);
size_t const size = PAGE_SIZE << order;
return allocate_pages(gfp_mask, size);
}
void *__alloc_page_frag(struct page_frag_cache *nc, unsigned int fragsz, gfp_t gfp_mask)
void *__alloc_page_frag(struct page_frag_cache *, unsigned int const fragsz,
gfp_t const gfp_mask)
{
struct page *page = alloc_pages(GFP_LX_DMA, fragsz / PAGE_SIZE);
if (!page) return nullptr;
return page->addr;
struct page *page = allocate_pages(gfp_mask, fragsz);
return page ? page->addr : page;
}