snd_pcm_plug_alloc 1020 sound/core/oss/pcm_oss.c 		err = snd_pcm_plug_alloc(substream, oss_period_size);
snd_pcm_plug_alloc   93 sound/core/oss/pcm_plugin.h int snd_pcm_plug_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t frames);