Lines Matching refs:hdr
27 struct snd_util_memhdr *hdr;
29 hdr = kzalloc(sizeof(*hdr), GFP_KERNEL);
30 if (hdr == NULL)
32 hdr->size = memsize;
33 mutex_init(&hdr->block_mutex);
34 INIT_LIST_HEAD(&hdr->block);
36 return hdr;
42 void snd_util_memhdr_free(struct snd_util_memhdr *hdr)
46 if (!hdr)
49 while ((p = hdr->block.next) != &hdr->block) {
53 kfree(hdr);
60 __snd_util_mem_alloc(struct snd_util_memhdr *hdr, int size)
66 if (snd_BUG_ON(!hdr || size <= 0))
73 if (units > hdr->size)
78 list_for_each(p, &hdr->block) {
84 if (hdr->size - prev_offset < units)
88 return __snd_util_memblk_new(hdr, units, p->prev);
97 __snd_util_memblk_new(struct snd_util_memhdr *hdr, unsigned int units,
102 blk = kmalloc(sizeof(struct snd_util_memblk) + hdr->block_extra_size,
107 if (prev == &hdr->block)
115 hdr->nblocks++;
116 hdr->used += units;
125 snd_util_mem_alloc(struct snd_util_memhdr *hdr, int size)
128 mutex_lock(&hdr->block_mutex);
129 blk = __snd_util_mem_alloc(hdr, size);
130 mutex_unlock(&hdr->block_mutex);
140 __snd_util_mem_free(struct snd_util_memhdr *hdr, struct snd_util_memblk *blk)
143 hdr->nblocks--;
144 hdr->used -= blk->size;
151 int snd_util_mem_free(struct snd_util_memhdr *hdr, struct snd_util_memblk *blk)
153 if (snd_BUG_ON(!hdr || !blk))
156 mutex_lock(&hdr->block_mutex);
157 __snd_util_mem_free(hdr, blk);
158 mutex_unlock(&hdr->block_mutex);
165 int snd_util_mem_avail(struct snd_util_memhdr *hdr)
168 mutex_lock(&hdr->block_mutex);
169 size = hdr->size - hdr->used;
170 mutex_unlock(&hdr->block_mutex);