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ALSA: Remove memory reservation code from memalloc helper

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Nowadays we have CMA for obtaining the contiguous memory pages
efficiently.  Let's kill the old kludge for reserving the memory pages
for large buffers.  It was rarely useful (only for preserving pages
among module reloading or a little help by an early boot scripting),
used only by a couple of drivers, and yet it gives too much ugliness
than its benefit.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-01-08 16:12:25 +01:00
parent d7b135410e
commit 47d98c026e
7 changed files with 18 additions and 321 deletions
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7
include/sound/memalloc.h
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@ -149,13 +149,6 @@ int snd_dma_alloc_pages_fallback(int type, struct device *dev, size_t size,
struct snd_dma_buffer *dmab);
void snd_dma_free_pages(struct snd_dma_buffer *dmab);
/* buffer-preservation managements */
#define snd_dma_pci_buf_id(pci) (((unsigned int)(pci)->vendor << 16) | (pci)->device)
size_t snd_dma_get_reserved_buf(struct snd_dma_buffer *dmab, unsigned int id);
int snd_dma_reserve_buf(struct snd_dma_buffer *dmab, unsigned int id);
/* basic memory allocation functions */
void *snd_malloc_pages(size_t size, gfp_t gfp_flags);
void snd_free_pages(void *ptr, size_t size);