1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2025 Oxide Computer Company 14 */ 15 16 17 #include "thr_uberdata.h" 18 #include <cp_defs.h> 19 20 extern hrtime_t __gethrtime_sys(void); 21 22 /* 23 * Calculate the hrtime using the comm page if possible, falling back to the 24 * legacy "fast-trap" syscall path if not. 25 */ 26 hrtime_t __gethrtime(void)27__gethrtime(void) 28 { 29 comm_page_t *cp = (comm_page_t *)__uberdata.ub_comm_page; 30 31 if (cp != NULL && __cp_can_gettime(cp) != 0) { 32 return (__cp_gethrtime(cp)); 33 } 34 return (__gethrtime_sys()); 35 } 36