1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include <linux/module.h>
24 #include <linux/autoconf.h>
25 #include <linux/sysctl.h>
26 #include <linux/sched.h>
28 #include <linux/sysctl.h>
29 #include <linux/version.h>
30 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
31 #include <linux/swapctl.h>
33 #include <linux/proc_fs.h>
34 #include <linux/slab.h>
35 #include <linux/stat.h>
36 #include <linux/ctype.h>
37 #include <asm/bitops.h>
38 #include <asm/segment.h>
39 #include <asm/uaccess.h>
40 #include <linux/utsname.h>
42 #define DEBUG_SUBSYSTEM S_CLASS
44 #include <linux/obd_support.h>
46 struct ctl_table_header *obd_table_header = NULL;
48 #define OBD_SYSCTL 300
51 OBD_FAIL_LOC = 1, /* control test failures instrumentation */
52 OBD_TIMEOUT, /* RPC timeout before recovery/intr */
53 OBD_DUMP_ON_TIMEOUT, /* dump kernel debug log upon eviction */
54 OBD_UPCALL, /* path to recovery upcall */
55 OBD_MEMUSED, /* bytes currently OBD_ALLOCated */
56 OBD_SYNCFILTER, /* XXX temporary, as we play with sync osts.. */
57 OBD_LDLM_TIMEOUT, /* LDLM timeout for ASTs before client eviction */
60 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)
61 #define ll_proc_dointvec(table,write,filp,buffer,lenp,ppos) \
62 proc_dointvec(table,write,filp,buffer,lenp)
63 #define LL_PROC_PROTO(name) \
64 name(ctl_table *table, int write, struct file *filp, \
65 void *buffer, size_t *lenp)
67 #define ll_proc_dointvec(table,write,filp,buffer,lenp,ppos) \
68 proc_dointvec(table,write,filp,buffer,lenp,ppos);
69 #define LL_PROC_PROTO(name) \
70 name(ctl_table *table, int write, struct file *filp, \
71 void *buffer, size_t *lenp, loff_t *ppos)
74 int LL_PROC_PROTO(proc_fail_loc)
77 int old_fail_loc = obd_fail_loc;
79 rc = ll_proc_dointvec(table, write, filp, buffer, lenp, ppos);
80 if (old_fail_loc != obd_fail_loc)
81 wake_up(&obd_race_waitq);
85 int LL_PROC_PROTO(proc_set_timeout)
89 rc = ll_proc_dointvec(table, write, filp, buffer, lenp, ppos);
90 if (ldlm_timeout >= obd_timeout)
91 ldlm_timeout = max(obd_timeout / 3, 1U);
92 else if (ldlm_timeout < 10 && obd_timeout >= ldlm_timeout * 4)
93 ldlm_timeout = min(obd_timeout / 3, 30U);
97 static ctl_table obd_table[] = {
98 {OBD_FAIL_LOC, "fail_loc", &obd_fail_loc, sizeof(int), 0644, NULL,
100 {OBD_TIMEOUT, "timeout", &obd_timeout, sizeof(int), 0644, NULL,
102 {OBD_DUMP_ON_TIMEOUT, "dump_on_timeout", &obd_dump_on_timeout,
103 sizeof(int), 0644, NULL, &proc_dointvec},
104 /* XXX need to lock so we avoid update races with recovery upcall! */
105 {OBD_UPCALL, "upcall", obd_lustre_upcall, 128, 0644, NULL,
106 &proc_dostring, &sysctl_string },
107 {OBD_MEMUSED, "memused", (int *)&obd_memory.counter,
108 sizeof(int), 0644, NULL, &proc_dointvec},
109 {OBD_SYNCFILTER, "filter_sync_on_commit", &obd_sync_filter, sizeof(int),
110 0644, NULL, &proc_dointvec},
111 {OBD_LDLM_TIMEOUT, "ldlm_timeout", &ldlm_timeout, sizeof(int), 0644,
112 NULL, &proc_set_timeout},
116 static ctl_table parent_table[] = {
117 {OBD_SYSCTL, "lustre", NULL, 0, 0555, obd_table},
121 void obd_sysctl_init (void)
124 if ( !obd_table_header )
125 obd_table_header = register_sysctl_table(parent_table, 0);
129 void obd_sysctl_clean (void)
132 if ( obd_table_header )
133 unregister_sysctl_table(obd_table_header);
134 obd_table_header = NULL;