WSL2-Linux-Kernel/sound/core/memalloc_local.h

// SPDX-License-Identifier: GPL-2.0-only
#ifndef __MEMALLOC_LOCAL_H
#define __MEMALLOC_LOCAL_H

struct snd_malloc_ops {
	int (*alloc)(struct snd_dma_buffer *dmab, size_t size);
	void (*free)(struct snd_dma_buffer *dmab);
	dma_addr_t (*get_addr)(struct snd_dma_buffer *dmab, size_t offset);
	struct page *(*get_page)(struct snd_dma_buffer *dmab, size_t offset);
	unsigned int (*get_chunk_size)(struct snd_dma_buffer *dmab,
				       unsigned int ofs, unsigned int size);
	int (*mmap)(struct snd_dma_buffer *dmab, struct vm_area_struct *area);
};

#ifdef CONFIG_SND_DMA_SGBUF
extern const struct snd_malloc_ops snd_dma_sg_ops;
#endif

#endif /* __MEMALLOC_LOCAL_H */