geom_kern.c (afcbcfaed01d0d67606a6dcc528e5178354e9a36) geom_kern.c (b5cba4167f324641aafb96a167191a6b7a588d6e)
1/*-
2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the

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33 * SUCH DAMAGE.
34 *
35 * $FreeBSD$
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/kernel.h>
1/*-
2 * Copyright (c) 2002 Poul-Henning Kamp
3 * Copyright (c) 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp
7 * and NAI Labs, the Security Research Division of Network Associates, Inc.
8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the

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33 * SUCH DAMAGE.
34 *
35 * $FreeBSD$
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/kernel.h>
41#include <sys/eventhandler.h>
41#include <sys/malloc.h>
42#include <sys/bio.h>
43#include <sys/sysctl.h>
44#include <sys/proc.h>
45#include <sys/kthread.h>
46#include <sys/lock.h>
47#include <sys/mutex.h>
48#include <sys/sx.h>

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53MALLOC_DEFINE(M_GEOM, "GEOM", "Geom data structures");
54
55struct sx topology_lock;
56
57static struct proc *g_up_proc;
58
59int g_debugflags;
60int g_collectstats = 1;
42#include <sys/malloc.h>
43#include <sys/bio.h>
44#include <sys/sysctl.h>
45#include <sys/proc.h>
46#include <sys/kthread.h>
47#include <sys/lock.h>
48#include <sys/mutex.h>
49#include <sys/sx.h>

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54MALLOC_DEFINE(M_GEOM, "GEOM", "Geom data structures");
55
56struct sx topology_lock;
57
58static struct proc *g_up_proc;
59
60int g_debugflags;
61int g_collectstats = 1;
62int g_shutdown;
61
62/*
63 * G_UP and G_DOWN are the two threads which push I/O through the
64 * stack.
65 *
66 * Things are procesed in a FIFO order, but these threads could be
67 * part of I/O prioritization by deciding which bios/bioqs to service
68 * in what order.

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134}
135
136struct kproc_desc g_event_kp = {
137 "g_event",
138 g_event_procbody,
139 &g_event_proc,
140};
141
63
64/*
65 * G_UP and G_DOWN are the two threads which push I/O through the
66 * stack.
67 *
68 * Things are procesed in a FIFO order, but these threads could be
69 * part of I/O prioritization by deciding which bios/bioqs to service
70 * in what order.

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136}
137
138struct kproc_desc g_event_kp = {
139 "g_event",
140 g_event_procbody,
141 &g_event_proc,
142};
143
144static void
145geom_shutdown(void *foo __unused)
146{
147
148 g_shutdown = 1;
149}
150
142void
143g_init(void)
144{
145 sx_init(&topology_lock, "GEOM topology");
146 g_io_init();
147 g_event_init();
148 g_ctl_init();
149 mtx_lock(&Giant);
150 kproc_start(&g_event_kp);
151 kproc_start(&g_up_kp);
152 kproc_start(&g_down_kp);
153 mtx_unlock(&Giant);
151void
152g_init(void)
153{
154 sx_init(&topology_lock, "GEOM topology");
155 g_io_init();
156 g_event_init();
157 g_ctl_init();
158 mtx_lock(&Giant);
159 kproc_start(&g_event_kp);
160 kproc_start(&g_up_kp);
161 kproc_start(&g_down_kp);
162 mtx_unlock(&Giant);
163 EVENTHANDLER_REGISTER(shutdown_pre_sync, geom_shutdown, NULL,
164 SHUTDOWN_PRI_FIRST);
154}
155
156static int
157sysctl_kern_geom_conftxt(SYSCTL_HANDLER_ARGS)
158{
159 int error;
160 struct sbuf *sb;
161

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166
167static int
168sysctl_kern_geom_conftxt(SYSCTL_HANDLER_ARGS)
169{
170 int error;
171 struct sbuf *sb;
172

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