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https://github.com/brain-hackers/u-boot-brain
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6b9f9eadff
Currently, kzalloc() returns zero-filled memory, while kmalloc() simply ignores the second argument and never fills the memory area with zeros. I want kmalloc(size, __GFP_ZERO) to behave as kzalloc() does, which will make it easier to add more memory allocator variants. With the introduction of __GFP_ZERO flag, going forward, kzmalloc() variants can fall back to kmalloc() enabling the __GFP_ZERO flag. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Heiko Schocher <hs@denx.de> Acked-by: Simon Glass <sjg@chromium.org> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
42 lines
716 B
C
42 lines
716 B
C
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#include <common.h>
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#include <linux/compat.h>
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struct p_current cur = {
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.pid = 1,
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};
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__maybe_unused struct p_current *current = &cur;
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unsigned long copy_from_user(void *dest, const void *src,
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unsigned long count)
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{
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memcpy((void *)dest, (void *)src, count);
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return 0;
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}
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void *kmalloc(size_t size, int flags)
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{
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void *p;
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p = memalign(ARCH_DMA_MINALIGN, size);
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if (flags & __GFP_ZERO)
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memset(p, 0, size);
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return p;
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}
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struct kmem_cache *get_mem(int element_sz)
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{
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struct kmem_cache *ret;
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ret = memalign(ARCH_DMA_MINALIGN, sizeof(struct kmem_cache));
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ret->sz = element_sz;
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return ret;
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}
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void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
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{
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return memalign(ARCH_DMA_MINALIGN, obj->sz);
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}
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