1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see [sun.com URL with a
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #include <linux/module.h>
38 #include <linux/autoconf.h>
39 #include <linux/sysctl.h>
40 #include <linux/sched.h>
42 #include <linux/sysctl.h>
43 #include <linux/version.h>
44 #include <linux/proc_fs.h>
45 #include <linux/slab.h>
46 #include <linux/stat.h>
47 #include <linux/ctype.h>
48 #include <asm/bitops.h>
49 #include <asm/uaccess.h>
50 #include <linux/utsname.h>
52 #define DEBUG_SUBSYSTEM S_CLASS
54 #include <obd_support.h>
55 #include <lprocfs_status.h>
57 cfs_sysctl_table_header_t *obd_table_header = NULL;
59 #define OBD_SYSCTL 300
62 OBD_FAIL_LOC = 1, /* control test failures instrumentation */
63 OBD_FAIL_VAL, /* userdata for fail loc */
64 OBD_TIMEOUT, /* RPC timeout before recovery/intr */
65 OBD_DUMP_ON_TIMEOUT, /* dump kernel debug log upon eviction */
66 OBD_MEMUSED, /* bytes currently OBD_ALLOCated */
67 OBD_PAGESUSED, /* pages currently OBD_PAGE_ALLOCated */
68 OBD_MAXMEMUSED, /* maximum bytes OBD_ALLOCated concurrently */
69 OBD_MAXPAGESUSED, /* maximum pages OBD_PAGE_ALLOCated concurrently */
70 OBD_SYNCFILTER, /* XXX temporary, as we play with sync osts.. */
71 OBD_LDLM_TIMEOUT, /* LDLM timeout for ASTs before client eviction */
72 OBD_DUMP_ON_EVICTION, /* dump kernel debug log upon eviction */
73 OBD_DEBUG_PEER_ON_TIMEOUT, /* dump peer debug when RPC times out */
74 OBD_ALLOC_FAIL_RATE, /* memory allocation random failure rate */
77 int LL_PROC_PROTO(proc_fail_loc)
80 long 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 int LL_PROC_PROTO(proc_memory_alloc)
102 DECLARE_LL_PROC_PPOS_DECL;
104 if (!*lenp || (*ppos && !write)) {
111 len = snprintf(buf, sizeof(buf), LPU64"\n", obd_memory_sum());
115 if (copy_to_user(buffer, buf, len))
122 int LL_PROC_PROTO(proc_pages_alloc)
126 DECLARE_LL_PROC_PPOS_DECL;
128 if (!*lenp || (*ppos && !write)) {
135 len = snprintf(buf, sizeof(buf), LPU64"\n", obd_pages_sum());
139 if (copy_to_user(buffer, buf, len))
146 int LL_PROC_PROTO(proc_mem_max)
150 DECLARE_LL_PROC_PPOS_DECL;
152 if (!*lenp || (*ppos && !write)) {
159 len = snprintf(buf, sizeof(buf), LPU64"\n", obd_memory_max());
163 if (copy_to_user(buffer, buf, len))
170 int LL_PROC_PROTO(proc_pages_max)
174 DECLARE_LL_PROC_PPOS_DECL;
176 if (!*lenp || (*ppos && !write)) {
183 len = snprintf(buf, sizeof(buf), LPU64"\n", obd_pages_max());
187 if (copy_to_user(buffer, buf, len))
194 #ifdef RANDOM_FAIL_ALLOC
195 int LL_PROC_PROTO(proc_alloc_fail_rate)
198 DECLARE_LL_PROC_PPOS_DECL;
200 if (!table->data || !table->maxlen || !*lenp || (*ppos && !write)) {
205 rc = lprocfs_write_frac_helper(buffer, *lenp,
206 (unsigned int*)table->data,
207 OBD_ALLOC_FAIL_MULT);
212 len = lprocfs_read_frac_helper(buf, 21,
213 *(unsigned int*)table->data,
214 OBD_ALLOC_FAIL_MULT);
218 if (copy_to_user(buffer, buf, len))
227 static cfs_sysctl_table_t obd_table[] = {
229 .ctl_name = OBD_FAIL_LOC,
230 .procname = "fail_loc",
231 .data = &obd_fail_loc,
232 .maxlen = sizeof(int),
234 .proc_handler = &proc_fail_loc
237 .ctl_name = OBD_FAIL_VAL,
238 .procname = "fail_val",
239 .data = &obd_fail_val,
240 .maxlen = sizeof(int),
242 .proc_handler = &proc_dointvec
245 .ctl_name = OBD_TIMEOUT,
246 .procname = "timeout",
247 .data = &obd_timeout,
248 .maxlen = sizeof(int),
250 .proc_handler = &proc_set_timeout
253 .ctl_name = OBD_DEBUG_PEER_ON_TIMEOUT,
254 .procname = "debug_peer_on_timeout",
255 .data = &obd_debug_peer_on_timeout,
256 .maxlen = sizeof(int),
258 .proc_handler = &proc_dointvec
261 .ctl_name = OBD_DUMP_ON_TIMEOUT,
262 .procname = "dump_on_timeout",
263 .data = &obd_dump_on_timeout,
264 .maxlen = sizeof(int),
266 .proc_handler = &proc_dointvec
269 .ctl_name = OBD_DUMP_ON_EVICTION,
270 .procname = "dump_on_eviction",
271 .data = &obd_dump_on_eviction,
272 .maxlen = sizeof(int),
274 .proc_handler = &proc_dointvec
277 .ctl_name = OBD_MEMUSED,
278 .procname = "memused",
282 .proc_handler = &proc_memory_alloc
285 .ctl_name = OBD_PAGESUSED,
286 .procname = "pagesused",
290 .proc_handler = &proc_pages_alloc
293 .ctl_name = OBD_MAXMEMUSED,
294 .procname = "memused_max",
298 .proc_handler = &proc_mem_max
301 .ctl_name = OBD_MAXPAGESUSED,
302 .procname = "pagesused_max",
306 .proc_handler = &proc_pages_max
309 .ctl_name = OBD_LDLM_TIMEOUT,
310 .procname = "ldlm_timeout",
311 .data = &ldlm_timeout,
312 .maxlen = sizeof(int),
314 .proc_handler = &proc_set_timeout
316 #ifdef RANDOM_FAIL_LOC
318 .ctl_name = OBD_ALLOC_FAIL_RATE,
319 .procname = "alloc_fail_rate",
320 .data = &obd_alloc_fail_rate,
321 .maxlen = sizeof(int),
323 .proc_handler = &proc_alloc_fail_rate
329 static cfs_sysctl_table_t parent_table[] = {
331 .ctl_name = OBD_SYSCTL,
332 .procname = "lustre",
341 void obd_sysctl_init (void)
344 if ( !obd_table_header )
345 obd_table_header = cfs_register_sysctl_table(parent_table, 0);
349 void obd_sysctl_clean (void)
352 if ( obd_table_header )
353 cfs_unregister_sysctl_table(obd_table_header);
354 obd_table_header = NULL;