sound/core/pcm_memory.c

132  * Releases the pre-allocated buffer of the given substream.
140  * snd_pcm_lib_preallocate_free_for_all - release all pre-allocated buffers on the pcm
143  * Releases all the pre-allocated buffers on the given pcm.
263  * pre-allocate the buffer and create a proc file for the substream
317  * snd_pcm_lib_preallocate_pages - pre-allocation for the given DMA type
321  * @size: the requested pre-allocation size in bytes
322  * @max: the max. allowed pre-allocation size
324  * Do pre-allocation for the given DMA buffer type.
335 …* snd_pcm_lib_preallocate_pages_for_all - pre-allocation for continuous memory type (all substream…
339  * @size: the requested pre-allocation size in bytes
340  * @max: the max. allowed pre-allocation size
342  * Do pre-allocation to all substreams of the given pcm for the
358  * @size: the requested pre-allocation size in bytes
359  * @max: the max. allowed pre-allocation size
361  * Do pre-allocation for the given DMA buffer type, and set the managed
397  * @size: the requested pre-allocation size in bytes
398  * @max: the max. allowed pre-allocation size
400  * Do pre-allocation to all substreams of the given pcm for the specified DMA
450 		dmab = &substream->dma_buffer; /* use the pre-allocated buffer */  in snd_pcm_lib_malloc_pages()