Cross Reference: /illumos-gate/usr/src/uts/common/tnf/tnf

Lines Matching refs:block
68  * (Private) Allocate a new block.  Return NULL on failure and mark
69  * tracing as broken.  'istag' is non-zero if the block is to be
76 	tnf_block_header_t 	*block;
91 	 * Check reserved area first for tag block allocations
99 	 * Search for a block, using hint as starting point.
102 	bcount = fh->com.block_count;	/* total block count */
105 	bn = fh->next_alloc.block[gen & TNFW_B_ALLOC_LO];
110 		 * Calculate next (not this) block to look for.
120 		 * Try to reserve candidate block
123 		block = (tnf_block_header_t *)
126 		if (lock_try(&block->A_lock))
127 			if (block->generation < gen &&
128 			    lock_try(&block->B_lock))
131 				lock_clear(&block->A_lock);
135 		bn = fh->next_alloc.block[gen & TNFW_B_ALLOC_LO];
152 	tmp_bn = fh->next_alloc.block[tmp_gen & TNFW_B_ALLOC_LO];
160 		fh->next_alloc.block[new_gen & TNFW_B_ALLOC_LO] = new_bn;
167 	 * Initialize and return the block
169 	/* ASSERT(block->tag == TNF_BLOCK_HEADER_TAG); */
170 	block->bytes_valid = sizeof (tnf_block_header_t);
171 	block->next_block = NULL;
173 	block->generation = istag ? TNF_TAG_GENERATION_NUM : gen;
174 	/* ASSERT(LOCK_HELD(&block->A_lock); */
175 	lock_clear(&block->B_lock);
176 	return (block);
180 	 * Look for a free tag block in reserved area
185 		block = (tnf_block_header_t *)
189 		 * See if block is unclaimed.
191 		 * block was claimed and released, since it
194 		if (lock_try(&block->A_lock) &&
195 		    block->generation == 0) {
231 	tnf_block_header_t	*block, *new_block;
236 	block = pos->tnfw_w_block;
241 	if (block == NULL || offset + size > TNF_BLOCK_SIZE) {
243 		/* Get a new block */
253 		 * If the old block is clean (i.e., we're in a new
257 		if (block != NULL) {
258 			if (block->bytes_valid == offset &&
260 				/* block is clean: release it */
261 				lock_clear(&block->A_lock);
263 				/* block is dirty */
267 				p = (ulong_t *)((char *)block + offset);
269 				q = (ulong_t *)((char *)block + TNF_BLOCK_SIZE);
273 				/* append block to release list */
274 				new_block->next_block = block;
276 				/* we have at least one dirty block */
281 		/* make new_block the current block */
282 		pos->tnfw_w_block = block = new_block;
288 	destp = (char *)block + offset;
343 	tnf_block_header_t *block;
389 	fh->next_alloc.block[0] = 0;
390 	fh->next_alloc.block[1] = TNFW_B_DATA_BLOCK_BEGIN >> TNF_BLOCK_SHIFT;
399 		block =	(tnf_block_header_t *)(buf + (i << TNF_BLOCK_SHIFT));
400 		block->tag = (tnf_ref32_t)TNF_BLOCK_HEADER_TAG;
401 		block->generation = 0;
402 		block->bytes_valid = sizeof (tnf_block_header_t);
403 		LOCK_INIT_CLEAR(&block->A_lock);
404 		LOCK_INIT_CLEAR(&block->B_lock);