1270 	umem_log_header_t *lhp;  in umem_log_init()  local
1283 	lhp = vmem_xalloc(umem_log_arena, lhsize, 64, P2NPHASE(lhsize, 64), 0,  in umem_log_init()
1285 	if (lhp == NULL)  in umem_log_init()
1288 	bzero(lhp, lhsize);  in umem_log_init()
1290 	(void) mutex_init(&lhp->lh_lock, USYNC_THREAD, NULL);  in umem_log_init()
1291 	lhp->lh_nchunks = nchunks;  in umem_log_init()
1292 	lhp->lh_chunksize = P2ROUNDUP(logsize / nchunks, PAGESIZE);  in umem_log_init()
1293 	if (lhp->lh_chunksize == 0)  in umem_log_init()
1294 		lhp->lh_chunksize = PAGESIZE;  in umem_log_init()
1296 	lhp->lh_base = vmem_alloc(umem_log_arena,  in umem_log_init()
1297 	    lhp->lh_chunksize * nchunks, VM_NOSLEEP);  in umem_log_init()
1298 	if (lhp->lh_base == NULL)  in umem_log_init()
1301 	lhp->lh_free = vmem_alloc(umem_log_arena,  in umem_log_init()
1303 	if (lhp->lh_free == NULL)  in umem_log_init()
1306 	bzero(lhp->lh_base, lhp->lh_chunksize * nchunks);  in umem_log_init()
1309 		umem_cpu_log_header_t *clhp = &lhp->lh_cpu[i];  in umem_log_init()
1315 		lhp->lh_free[i] = i;  in umem_log_init()
1317 	lhp->lh_head = umem_max_ncpus;  in umem_log_init()
1318 	lhp->lh_tail = 0;  in umem_log_init()
1320 	return (lhp);  in umem_log_init()
1323 	if (lhp != NULL) {  in umem_log_init()
1324 		if (lhp->lh_base != NULL)  in umem_log_init()
1325 			vmem_free(umem_log_arena, lhp->lh_base,  in umem_log_init()
1326 			    lhp->lh_chunksize * nchunks);  in umem_log_init()
1328 		vmem_xfree(umem_log_arena, lhp, lhsize);  in umem_log_init()
1334 umem_log_enter(umem_log_header_t *lhp, void *data, size_t size)  in umem_log_enter()  argument
1338 	    &lhp->lh_cpu[CPU(umem_cpu_mask)->cpu_number];  in umem_log_enter()
1340 	if (lhp == NULL || umem_logging == 0)  in umem_log_enter()
1346 		(void) mutex_lock(&lhp->lh_lock);  in umem_log_enter()
1347 		lhp->lh_hits++;  in umem_log_enter()
1348 		lhp->lh_free[lhp->lh_tail] = clhp->clh_chunk;  in umem_log_enter()
1349 		lhp->lh_tail = (lhp->lh_tail + 1) % lhp->lh_nchunks;  in umem_log_enter()
1350 		clhp->clh_chunk = lhp->lh_free[lhp->lh_head];  in umem_log_enter()
1351 		lhp->lh_head = (lhp->lh_head + 1) % lhp->lh_nchunks;  in umem_log_enter()
1352 		clhp->clh_current = lhp->lh_base +  in umem_log_enter()
1353 		    clhp->clh_chunk * lhp->lh_chunksize;  in umem_log_enter()
1354 		clhp->clh_avail = lhp->lh_chunksize;  in umem_log_enter()
1355 		if (size > lhp->lh_chunksize)  in umem_log_enter()
1356 			size = lhp->lh_chunksize;  in umem_log_enter()
1357 		(void) mutex_unlock(&lhp->lh_lock);  in umem_log_enter()