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 the Lustre file system, http://www.lustre.org
7 * Lustre is a trademark of Cluster File Systems, Inc.
9 * You may have signed or agreed to another license before downloading
10 * this software. If so, you are bound by the terms and conditions
11 * of that agreement, and the following does not apply to you. See the
12 * LICENSE file included with this distribution for more information.
14 * If you did not agree to a different license, then this copy of Lustre
15 * is open source software; you can redistribute it and/or modify it
16 * under the terms of version 2 of the GNU General Public License as
17 * published by the Free Software Foundation.
19 * In either case, Lustre is distributed in the hope that it will be
20 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
21 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * license text for more details.
26 #include <linux/module.h>
27 #include <linux/autoconf.h>
28 #include <linux/sysctl.h>
29 #include <linux/sched.h>
31 #include <linux/sysctl.h>
32 #include <linux/version.h>
33 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
34 #include <linux/swapctl.h>
36 #include <linux/proc_fs.h>
37 #include <linux/slab.h>
38 #include <linux/stat.h>
39 #include <linux/ctype.h>
40 #include <asm/bitops.h>
41 #include <asm/segment.h>
42 #include <asm/uaccess.h>
43 #include <linux/utsname.h>
45 #define DEBUG_SUBSYSTEM S_CLASS
47 #include <linux/obd_support.h>
49 struct ctl_table_header *obd_table_header = NULL;
51 #define OBD_SYSCTL 300
54 OBD_FAIL_LOC = 1, /* control test failures instrumentation */
55 OBD_TIMEOUT, /* RPC timeout before recovery/intr */
56 OBD_DUMP_ON_TIMEOUT, /* dump kernel debug log upon eviction */
57 OBD_UPCALL, /* path to recovery upcall */
58 OBD_MEMUSED, /* bytes currently OBD_ALLOCated */
59 OBD_SYNCFILTER, /* XXX temporary, as we play with sync osts.. */
60 OBD_LDLM_TIMEOUT, /* LDLM timeout for ASTs before client eviction */
63 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)
64 #define ll_proc_dointvec(table,write,filp,buffer,lenp,ppos) \
65 proc_dointvec(table,write,filp,buffer,lenp)
66 #define LL_PROC_PROTO(name) \
67 name(ctl_table *table, int write, struct file *filp, \
68 void *buffer, size_t *lenp)
70 #define ll_proc_dointvec(table,write,filp,buffer,lenp,ppos) \
71 proc_dointvec(table,write,filp,buffer,lenp,ppos);
72 #define LL_PROC_PROTO(name) \
73 name(ctl_table *table, int write, struct file *filp, \
74 void *buffer, size_t *lenp, loff_t *ppos)
77 int LL_PROC_PROTO(proc_fail_loc)
80 int old_fail_loc = obd_fail_loc;
82 rc = ll_proc_dointvec(table, write, filp, buffer, lenp, ppos);
83 if (old_fail_loc != obd_fail_loc)
84 wake_up(&obd_race_waitq);
88 int LL_PROC_PROTO(proc_set_timeout)
92 rc = ll_proc_dointvec(table, write, filp, buffer, lenp, ppos);
93 if (ldlm_timeout >= obd_timeout)
94 ldlm_timeout = max(obd_timeout / 3, 1U);
98 static ctl_table obd_table[] = {
99 {OBD_FAIL_LOC, "fail_loc", &obd_fail_loc, sizeof(int), 0644, NULL,
101 {OBD_TIMEOUT, "timeout", &obd_timeout, sizeof(int), 0644, NULL,
103 {OBD_DUMP_ON_TIMEOUT, "dump_on_timeout", &obd_dump_on_timeout,
104 sizeof(int), 0644, NULL, &proc_dointvec},
105 /* XXX need to lock so we avoid update races with recovery upcall! */
106 {OBD_UPCALL, "upcall", obd_lustre_upcall, 128, 0644, NULL,
107 &proc_dostring, &sysctl_string },
108 {OBD_MEMUSED, "memused", (int *)&obd_memory.counter,
109 sizeof(int), 0644, NULL, &proc_dointvec},
110 {OBD_LDLM_TIMEOUT, "ldlm_timeout", &ldlm_timeout, sizeof(int), 0644,
111 NULL, &proc_set_timeout},
115 static ctl_table parent_table[] = {
116 {OBD_SYSCTL, "lustre", NULL, 0, 0555, obd_table},
120 void obd_sysctl_init (void)
123 if ( !obd_table_header )
124 obd_table_header = register_sysctl_table(parent_table, 0);
128 void obd_sysctl_clean (void)
131 if ( obd_table_header )
132 unregister_sysctl_table(obd_table_header);
133 obd_table_header = NULL;