1dd84a43cSPoul-Henning Kamp /*- 2dd84a43cSPoul-Henning Kamp * Copyright (c) 2002 Poul-Henning Kamp 3dd84a43cSPoul-Henning Kamp * Copyright (c) 2002 Networks Associates Technology, Inc. 4dd84a43cSPoul-Henning Kamp * All rights reserved. 5dd84a43cSPoul-Henning Kamp * 6dd84a43cSPoul-Henning Kamp * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7dd84a43cSPoul-Henning Kamp * and NAI Labs, the Security Research Division of Network Associates, Inc. 8dd84a43cSPoul-Henning Kamp * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9dd84a43cSPoul-Henning Kamp * DARPA CHATS research program. 10dd84a43cSPoul-Henning Kamp * 11dd84a43cSPoul-Henning Kamp * Redistribution and use in source and binary forms, with or without 12dd84a43cSPoul-Henning Kamp * modification, are permitted provided that the following conditions 13dd84a43cSPoul-Henning Kamp * are met: 14dd84a43cSPoul-Henning Kamp * 1. Redistributions of source code must retain the above copyright 15dd84a43cSPoul-Henning Kamp * notice, this list of conditions and the following disclaimer. 16dd84a43cSPoul-Henning Kamp * 2. Redistributions in binary form must reproduce the above copyright 17dd84a43cSPoul-Henning Kamp * notice, this list of conditions and the following disclaimer in the 18dd84a43cSPoul-Henning Kamp * documentation and/or other materials provided with the distribution. 19dd84a43cSPoul-Henning Kamp * 3. The names of the authors may not be used to endorse or promote 20dd84a43cSPoul-Henning Kamp * products derived from this software without specific prior written 21dd84a43cSPoul-Henning Kamp * permission. 22dd84a43cSPoul-Henning Kamp * 23dd84a43cSPoul-Henning Kamp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24dd84a43cSPoul-Henning Kamp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25dd84a43cSPoul-Henning Kamp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26dd84a43cSPoul-Henning Kamp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27dd84a43cSPoul-Henning Kamp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28dd84a43cSPoul-Henning Kamp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29dd84a43cSPoul-Henning Kamp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30dd84a43cSPoul-Henning Kamp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31dd84a43cSPoul-Henning Kamp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32dd84a43cSPoul-Henning Kamp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33dd84a43cSPoul-Henning Kamp * SUCH DAMAGE. 34dd84a43cSPoul-Henning Kamp */ 35dd84a43cSPoul-Henning Kamp 36dd84a43cSPoul-Henning Kamp /* 37dd84a43cSPoul-Henning Kamp * XXX: How do we in general know that objects referenced in events 38dd84a43cSPoul-Henning Kamp * have not been destroyed before we get around to handle the event ? 39dd84a43cSPoul-Henning Kamp */ 40dd84a43cSPoul-Henning Kamp 4150b1faefSDavid E. O'Brien #include <sys/cdefs.h> 4250b1faefSDavid E. O'Brien __FBSDID("$FreeBSD$"); 4350b1faefSDavid E. O'Brien 44dd84a43cSPoul-Henning Kamp #include <sys/param.h> 45dd84a43cSPoul-Henning Kamp #include <sys/malloc.h> 46dd84a43cSPoul-Henning Kamp #include <sys/systm.h> 47dd84a43cSPoul-Henning Kamp #include <sys/kernel.h> 48dd84a43cSPoul-Henning Kamp #include <sys/lock.h> 49dd84a43cSPoul-Henning Kamp #include <sys/mutex.h> 50afcbcfaeSPoul-Henning Kamp #include <machine/stdarg.h> 51dd84a43cSPoul-Henning Kamp #include <sys/errno.h> 52dd84a43cSPoul-Henning Kamp #include <sys/time.h> 53dd84a43cSPoul-Henning Kamp #include <geom/geom.h> 54b1876192SPoul-Henning Kamp #include <geom/geom_int.h> 55dd84a43cSPoul-Henning Kamp 56a974614bSPoul-Henning Kamp TAILQ_HEAD(event_tailq_head, g_event); 57a974614bSPoul-Henning Kamp 58dd84a43cSPoul-Henning Kamp static struct event_tailq_head g_events = TAILQ_HEAD_INITIALIZER(g_events); 59abb50a48SPoul-Henning Kamp static u_int g_pending_events; 60dd84a43cSPoul-Henning Kamp static TAILQ_HEAD(,g_provider) g_doorstep = TAILQ_HEAD_INITIALIZER(g_doorstep); 61903e43feSPoul-Henning Kamp static struct mtx g_eventlock; 62dd84a43cSPoul-Henning Kamp 63a974614bSPoul-Henning Kamp #define G_N_EVENTREFS 20 64a974614bSPoul-Henning Kamp 65a974614bSPoul-Henning Kamp struct g_event { 66a974614bSPoul-Henning Kamp TAILQ_ENTRY(g_event) events; 67a974614bSPoul-Henning Kamp g_event_t *func; 680a9c130cSPoul-Henning Kamp void *arg; 690a9c130cSPoul-Henning Kamp int flag; 70a974614bSPoul-Henning Kamp void *ref[G_N_EVENTREFS]; 71a974614bSPoul-Henning Kamp }; 72a974614bSPoul-Henning Kamp 730a9c130cSPoul-Henning Kamp #define EV_DONE 0x80000 740a9c130cSPoul-Henning Kamp #define EV_WAKEUP 0x40000 75c8589ad1SPoul-Henning Kamp #define EV_CANCELED 0x20000 760a9c130cSPoul-Henning Kamp 77dd84a43cSPoul-Henning Kamp void 78503abe45SPoul-Henning Kamp g_waitidle(void) 79dd84a43cSPoul-Henning Kamp { 80dd84a43cSPoul-Henning Kamp 81dd84a43cSPoul-Henning Kamp while (g_pending_events) 82503abe45SPoul-Henning Kamp tsleep(&g_pending_events, PPAUSE, "g_waitidle", hz/5); 83dd84a43cSPoul-Henning Kamp } 84dd84a43cSPoul-Henning Kamp 85dd84a43cSPoul-Henning Kamp void 86dd84a43cSPoul-Henning Kamp g_orphan_provider(struct g_provider *pp, int error) 87dd84a43cSPoul-Henning Kamp { 88dd84a43cSPoul-Henning Kamp 893d1d5bc3SPoul-Henning Kamp /* G_VALID_PROVIDER(pp) We likely lack topology lock */ 90dd84a43cSPoul-Henning Kamp g_trace(G_T_TOPOLOGY, "g_orphan_provider(%p(%s), %d)", 91dd84a43cSPoul-Henning Kamp pp, pp->name, error); 92dd84a43cSPoul-Henning Kamp KASSERT(error != 0, 93dd84a43cSPoul-Henning Kamp ("g_orphan_provider(%p(%s), 0) error must be non-zero\n", 94dd84a43cSPoul-Henning Kamp pp, pp->name)); 95d0265773SPoul-Henning Kamp 96dd84a43cSPoul-Henning Kamp pp->error = error; 97903e43feSPoul-Henning Kamp mtx_lock(&g_eventlock); 98d0265773SPoul-Henning Kamp KASSERT(!(pp->flags & G_PF_ORPHAN), 99d0265773SPoul-Henning Kamp ("g_orphan_provider(%p(%s)), already an orphan", pp, pp->name)); 100d0265773SPoul-Henning Kamp pp->flags |= G_PF_ORPHAN; 101dd84a43cSPoul-Henning Kamp TAILQ_INSERT_TAIL(&g_doorstep, pp, orphan); 102903e43feSPoul-Henning Kamp mtx_unlock(&g_eventlock); 103dd84a43cSPoul-Henning Kamp wakeup(&g_wait_event); 104dd84a43cSPoul-Henning Kamp } 105dd84a43cSPoul-Henning Kamp 106dd84a43cSPoul-Henning Kamp /* 107dd84a43cSPoul-Henning Kamp * This function is called once on each provider which the event handler 108dd84a43cSPoul-Henning Kamp * finds on its g_doorstep. 109dd84a43cSPoul-Henning Kamp */ 110dd84a43cSPoul-Henning Kamp 111dd84a43cSPoul-Henning Kamp static void 112b1876192SPoul-Henning Kamp g_orphan_register(struct g_provider *pp) 113dd84a43cSPoul-Henning Kamp { 114dd84a43cSPoul-Henning Kamp struct g_consumer *cp, *cp2; 1158592d7a7SPoul-Henning Kamp int wf; 116dd84a43cSPoul-Henning Kamp 117dd84a43cSPoul-Henning Kamp g_topology_assert(); 1183d1d5bc3SPoul-Henning Kamp G_VALID_PROVIDER(pp); 1193d1d5bc3SPoul-Henning Kamp g_trace(G_T_TOPOLOGY, "g_orphan_register(%s)", pp->name); 120dd84a43cSPoul-Henning Kamp 1218592d7a7SPoul-Henning Kamp wf = pp->flags & G_PF_WITHER; 1228592d7a7SPoul-Henning Kamp pp->flags &= ~G_PF_WITHER; 1238592d7a7SPoul-Henning Kamp 124dd84a43cSPoul-Henning Kamp /* 125dd84a43cSPoul-Henning Kamp * Tell all consumers the bad news. 126f48b8819SPoul-Henning Kamp * Don't be surprised if they self-destruct. 127dd84a43cSPoul-Henning Kamp */ 128dd84a43cSPoul-Henning Kamp cp = LIST_FIRST(&pp->consumers); 129dd84a43cSPoul-Henning Kamp while (cp != NULL) { 130dd84a43cSPoul-Henning Kamp cp2 = LIST_NEXT(cp, consumers); 13107d77fc6SPoul-Henning Kamp KASSERT(cp->geom->orphan != NULL, 13207d77fc6SPoul-Henning Kamp ("geom %s has no orphan, class %s", 13307d77fc6SPoul-Henning Kamp cp->geom->name, cp->geom->class->name)); 13407d77fc6SPoul-Henning Kamp cp->geom->orphan(cp); 135dd84a43cSPoul-Henning Kamp cp = cp2; 136dd84a43cSPoul-Henning Kamp } 1378592d7a7SPoul-Henning Kamp if (LIST_EMPTY(&pp->consumers) && wf) 138b144e6ffSPoul-Henning Kamp g_destroy_provider(pp); 1398592d7a7SPoul-Henning Kamp else 1408592d7a7SPoul-Henning Kamp pp->flags |= wf; 14120d2026bSPoul-Henning Kamp #ifdef notyet 142e5829909SPoul-Henning Kamp cp = LIST_FIRST(&pp->consumers); 143e5829909SPoul-Henning Kamp if (cp != NULL) 144e5829909SPoul-Henning Kamp return; 145e5829909SPoul-Henning Kamp if (pp->geom->flags & G_GEOM_WITHER) 146e5829909SPoul-Henning Kamp g_destroy_provider(pp); 14720d2026bSPoul-Henning Kamp #endif 148dd84a43cSPoul-Henning Kamp } 149dd84a43cSPoul-Henning Kamp 150dd84a43cSPoul-Henning Kamp static int 151b1876192SPoul-Henning Kamp one_event(void) 152dd84a43cSPoul-Henning Kamp { 153dd84a43cSPoul-Henning Kamp struct g_event *ep; 154dd84a43cSPoul-Henning Kamp struct g_provider *pp; 155dd84a43cSPoul-Henning Kamp 156dd84a43cSPoul-Henning Kamp g_topology_lock(); 157dd84a43cSPoul-Henning Kamp for (;;) { 158903e43feSPoul-Henning Kamp mtx_lock(&g_eventlock); 159dd84a43cSPoul-Henning Kamp pp = TAILQ_FIRST(&g_doorstep); 1603d1d5bc3SPoul-Henning Kamp if (pp != NULL) { 1613d1d5bc3SPoul-Henning Kamp G_VALID_PROVIDER(pp); 162dd84a43cSPoul-Henning Kamp TAILQ_REMOVE(&g_doorstep, pp, orphan); 1633d1d5bc3SPoul-Henning Kamp } 164903e43feSPoul-Henning Kamp mtx_unlock(&g_eventlock); 165dd84a43cSPoul-Henning Kamp if (pp == NULL) 166dd84a43cSPoul-Henning Kamp break; 167b1876192SPoul-Henning Kamp g_orphan_register(pp); 168dd84a43cSPoul-Henning Kamp } 169346cd5feSPoul-Henning Kamp mtx_lock(&g_eventlock); 170dd84a43cSPoul-Henning Kamp ep = TAILQ_FIRST(&g_events); 171dd84a43cSPoul-Henning Kamp if (ep == NULL) { 172346cd5feSPoul-Henning Kamp mtx_unlock(&g_eventlock); 173dd84a43cSPoul-Henning Kamp g_topology_unlock(); 174dd84a43cSPoul-Henning Kamp return (0); 175dd84a43cSPoul-Henning Kamp } 176dd84a43cSPoul-Henning Kamp TAILQ_REMOVE(&g_events, ep, events); 177346cd5feSPoul-Henning Kamp mtx_unlock(&g_eventlock); 178d98777f8SPoul-Henning Kamp g_topology_assert(); 179d98777f8SPoul-Henning Kamp ep->func(ep->arg, 0); 180d98777f8SPoul-Henning Kamp g_topology_assert(); 1810a9c130cSPoul-Henning Kamp if (ep->flag & EV_WAKEUP) { 1820a9c130cSPoul-Henning Kamp ep->flag |= EV_DONE; 1830a9c130cSPoul-Henning Kamp wakeup(ep); 1840a9c130cSPoul-Henning Kamp } else { 1859dfffbc9SPoul-Henning Kamp g_free(ep); 1860a9c130cSPoul-Henning Kamp } 187a9ed5e11SPoul-Henning Kamp g_pending_events--; 188a9ed5e11SPoul-Henning Kamp if (g_pending_events == 0) 189a9ed5e11SPoul-Henning Kamp wakeup(&g_pending_events); 190a9ed5e11SPoul-Henning Kamp g_topology_unlock(); 191dd84a43cSPoul-Henning Kamp return (1); 192dd84a43cSPoul-Henning Kamp } 193dd84a43cSPoul-Henning Kamp 194dd84a43cSPoul-Henning Kamp void 195b1876192SPoul-Henning Kamp g_run_events() 196dd84a43cSPoul-Henning Kamp { 197dd84a43cSPoul-Henning Kamp 198b1876192SPoul-Henning Kamp while (one_event()) 199dd84a43cSPoul-Henning Kamp ; 200dd84a43cSPoul-Henning Kamp } 201dd84a43cSPoul-Henning Kamp 202dd84a43cSPoul-Henning Kamp void 203afcbcfaeSPoul-Henning Kamp g_cancel_event(void *ref) 204dddc28bfSPoul-Henning Kamp { 205dddc28bfSPoul-Henning Kamp struct g_event *ep, *epn; 2062ab31b05SPoul-Henning Kamp struct g_provider *pp; 207afcbcfaeSPoul-Henning Kamp u_int n; 208dddc28bfSPoul-Henning Kamp 209dddc28bfSPoul-Henning Kamp mtx_lock(&g_eventlock); 2102ab31b05SPoul-Henning Kamp TAILQ_FOREACH(pp, &g_doorstep, orphan) { 2112ab31b05SPoul-Henning Kamp if (pp != ref) 2122ab31b05SPoul-Henning Kamp continue; 2132ab31b05SPoul-Henning Kamp TAILQ_REMOVE(&g_doorstep, pp, orphan); 2142ab31b05SPoul-Henning Kamp break; 2152ab31b05SPoul-Henning Kamp } 216afcbcfaeSPoul-Henning Kamp for (ep = TAILQ_FIRST(&g_events); ep != NULL; ep = epn) { 217dddc28bfSPoul-Henning Kamp epn = TAILQ_NEXT(ep, events); 218afcbcfaeSPoul-Henning Kamp for (n = 0; n < G_N_EVENTREFS; n++) { 219afcbcfaeSPoul-Henning Kamp if (ep->ref[n] == NULL) 220afcbcfaeSPoul-Henning Kamp break; 221afcbcfaeSPoul-Henning Kamp if (ep->ref[n] == ref) { 222dddc28bfSPoul-Henning Kamp TAILQ_REMOVE(&g_events, ep, events); 223316aed03SPoul-Henning Kamp ep->func(ep->arg, EV_CANCEL); 2240a9c130cSPoul-Henning Kamp if (ep->flag & EV_WAKEUP) { 2250a9c130cSPoul-Henning Kamp ep->flag |= EV_DONE; 226c8589ad1SPoul-Henning Kamp ep->flag |= EV_CANCELED; 2270a9c130cSPoul-Henning Kamp wakeup(ep); 2280a9c130cSPoul-Henning Kamp } else { 2299dfffbc9SPoul-Henning Kamp g_free(ep); 2300a9c130cSPoul-Henning Kamp } 23157ab2e04SPoul-Henning Kamp if (--g_pending_events == 0) 23257ab2e04SPoul-Henning Kamp wakeup(&g_pending_events); 233afcbcfaeSPoul-Henning Kamp break; 234dddc28bfSPoul-Henning Kamp } 235afcbcfaeSPoul-Henning Kamp } 236dddc28bfSPoul-Henning Kamp } 237dddc28bfSPoul-Henning Kamp mtx_unlock(&g_eventlock); 238dddc28bfSPoul-Henning Kamp } 239dddc28bfSPoul-Henning Kamp 2400a9c130cSPoul-Henning Kamp static int 241793ffa8eSPoul-Henning Kamp g_post_event_x(g_event_t *func, void *arg, int flag, int wuflag, struct g_event **epp, va_list ap) 242346cd5feSPoul-Henning Kamp { 243346cd5feSPoul-Henning Kamp struct g_event *ep; 244afcbcfaeSPoul-Henning Kamp void *p; 245afcbcfaeSPoul-Henning Kamp u_int n; 246346cd5feSPoul-Henning Kamp 247793ffa8eSPoul-Henning Kamp g_trace(G_T_TOPOLOGY, "g_post_event_x(%p, %p, %d, %d)", 248793ffa8eSPoul-Henning Kamp func, arg, flag, wakeup); 249793ffa8eSPoul-Henning Kamp KASSERT(wuflag == 0 || wuflag == EV_WAKEUP, 250793ffa8eSPoul-Henning Kamp ("Wrong wuflag in g_post_event_x(0x%x)", wuflag)); 2518cd1535aSPoul-Henning Kamp ep = g_malloc(sizeof *ep, flag | M_ZERO); 252346cd5feSPoul-Henning Kamp if (ep == NULL) 253346cd5feSPoul-Henning Kamp return (ENOMEM); 254793ffa8eSPoul-Henning Kamp ep->flag = wuflag; 255afcbcfaeSPoul-Henning Kamp for (n = 0; n < G_N_EVENTREFS; n++) { 256afcbcfaeSPoul-Henning Kamp p = va_arg(ap, void *); 257afcbcfaeSPoul-Henning Kamp if (p == NULL) 258afcbcfaeSPoul-Henning Kamp break; 259afcbcfaeSPoul-Henning Kamp g_trace(G_T_TOPOLOGY, " ref %p", p); 260e0d617c1SPoul-Henning Kamp ep->ref[n] = p; 261afcbcfaeSPoul-Henning Kamp } 262afcbcfaeSPoul-Henning Kamp KASSERT(p == NULL, ("Too many references to event")); 263346cd5feSPoul-Henning Kamp ep->func = func; 264346cd5feSPoul-Henning Kamp ep->arg = arg; 265346cd5feSPoul-Henning Kamp mtx_lock(&g_eventlock); 266346cd5feSPoul-Henning Kamp g_pending_events++; 267346cd5feSPoul-Henning Kamp TAILQ_INSERT_TAIL(&g_events, ep, events); 268346cd5feSPoul-Henning Kamp mtx_unlock(&g_eventlock); 269346cd5feSPoul-Henning Kamp wakeup(&g_wait_event); 2700a9c130cSPoul-Henning Kamp if (epp != NULL) 2710a9c130cSPoul-Henning Kamp *epp = ep; 2720a9c130cSPoul-Henning Kamp return (0); 2730a9c130cSPoul-Henning Kamp } 2740a9c130cSPoul-Henning Kamp 2750a9c130cSPoul-Henning Kamp int 2760a9c130cSPoul-Henning Kamp g_post_event(g_event_t *func, void *arg, int flag, ...) 2770a9c130cSPoul-Henning Kamp { 2780a9c130cSPoul-Henning Kamp va_list ap; 279a1a9b445SPoul-Henning Kamp int i; 2800a9c130cSPoul-Henning Kamp 2810a9c130cSPoul-Henning Kamp KASSERT(flag == M_WAITOK || flag == M_NOWAIT, 2820a9c130cSPoul-Henning Kamp ("Wrong flag to g_post_event")); 283a1a9b445SPoul-Henning Kamp va_start(ap, flag); 284793ffa8eSPoul-Henning Kamp i = g_post_event_x(func, arg, flag, 0, NULL, ap); 285a1a9b445SPoul-Henning Kamp va_end(ap); 286a1a9b445SPoul-Henning Kamp return (i); 2870a9c130cSPoul-Henning Kamp } 2880a9c130cSPoul-Henning Kamp 2890a9c130cSPoul-Henning Kamp 2900a9c130cSPoul-Henning Kamp /* 2910a9c130cSPoul-Henning Kamp * XXX: It might actually be useful to call this function with topology held. 2920a9c130cSPoul-Henning Kamp * XXX: This would ensure that the event gets created before anything else 2930a9c130cSPoul-Henning Kamp * XXX: changes. At present all users have a handle on things in some other 2940a9c130cSPoul-Henning Kamp * XXX: way, so this remains an XXX for now. 2950a9c130cSPoul-Henning Kamp */ 2960a9c130cSPoul-Henning Kamp 2970a9c130cSPoul-Henning Kamp int 2980a9c130cSPoul-Henning Kamp g_waitfor_event(g_event_t *func, void *arg, int flag, ...) 2990a9c130cSPoul-Henning Kamp { 3000a9c130cSPoul-Henning Kamp va_list ap; 3010a9c130cSPoul-Henning Kamp struct g_event *ep; 3020a9c130cSPoul-Henning Kamp int error; 3030a9c130cSPoul-Henning Kamp 30418e88d82SPawel Jakub Dawidek g_topology_assert_not(); 3050a9c130cSPoul-Henning Kamp KASSERT(flag == M_WAITOK || flag == M_NOWAIT, 3060a9c130cSPoul-Henning Kamp ("Wrong flag to g_post_event")); 307a1a9b445SPoul-Henning Kamp va_start(ap, flag); 308793ffa8eSPoul-Henning Kamp error = g_post_event_x(func, arg, flag, EV_WAKEUP, &ep, ap); 309a1a9b445SPoul-Henning Kamp va_end(ap); 3100a9c130cSPoul-Henning Kamp if (error) 3110a9c130cSPoul-Henning Kamp return (error); 3120a9c130cSPoul-Henning Kamp do 3130a9c130cSPoul-Henning Kamp tsleep(ep, PRIBIO, "g_waitfor_event", hz); 3140a9c130cSPoul-Henning Kamp while (!(ep->flag & EV_DONE)); 315c8589ad1SPoul-Henning Kamp if (ep->flag & EV_CANCELED) 316c8589ad1SPoul-Henning Kamp error = EAGAIN; 3179dfffbc9SPoul-Henning Kamp g_free(ep); 318c8589ad1SPoul-Henning Kamp return (error); 319346cd5feSPoul-Henning Kamp } 320346cd5feSPoul-Henning Kamp 321dd84a43cSPoul-Henning Kamp void 322dd84a43cSPoul-Henning Kamp g_event_init() 323dd84a43cSPoul-Henning Kamp { 324dd84a43cSPoul-Henning Kamp 325903e43feSPoul-Henning Kamp mtx_init(&g_eventlock, "GEOM orphanage", NULL, MTX_DEF); 326dd84a43cSPoul-Henning Kamp } 327