1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
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29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
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36 * lnet/klnds/ptllnd/ptllnd_modparams.c
38 * Author: PJ Kirner <pjkirner@clusterfs.com>
45 CFS_MODULE_PARM(ntx, "i", int, 0444,
46 "# of TX descriptors");
48 static int max_nodes = 1152;
49 CFS_MODULE_PARM(max_nodes, "i", int, 0444,
50 "maximum number of peer nodes");
52 static int max_procs_per_node = 2;
53 CFS_MODULE_PARM(max_procs_per_node, "i", int, 0444,
54 "maximum number of processes per peer node to cache");
56 static int checksum = 0;
57 CFS_MODULE_PARM(checksum, "i", int, 0644,
58 "set non-zero to enable message (not RDMA) checksums");
60 static int timeout = 50;
61 CFS_MODULE_PARM(timeout, "i", int, 0644,
64 static int portal = PTLLND_PORTAL; /* <lnet/ptllnd_wire.h> */
65 CFS_MODULE_PARM(portal, "i", int, 0444,
68 static int pid = PTLLND_PID; /* <lnet/ptllnd_wire.h> */
69 CFS_MODULE_PARM(pid, "i", int, 0444,
72 static int rxb_npages = 1;
73 CFS_MODULE_PARM(rxb_npages, "i", int, 0444,
74 "# of pages per rx buffer");
76 static int rxb_nspare = 8;
77 CFS_MODULE_PARM(rxb_nspare, "i", int, 0444,
78 "# of spare rx buffers");
80 static int credits = 128;
81 CFS_MODULE_PARM(credits, "i", int, 0444,
84 static int peercredits = PTLLND_PEERCREDITS; /* <lnet/ptllnd_wire.h> */
85 CFS_MODULE_PARM(peercredits, "i", int, 0444,
86 "concurrent sends to 1 peer");
88 static int max_msg_size = PTLLND_MAX_KLND_MSG_SIZE; /* <lnet/ptllnd_wire.h> */
89 CFS_MODULE_PARM(max_msg_size, "i", int, 0444,
90 "max size of immediate message");
92 static int peer_hash_table_size = 101;
93 CFS_MODULE_PARM(peer_hash_table_size, "i", int, 0444,
94 "# of slots in the peer hash table");
96 static int reschedule_loops = 100;
97 CFS_MODULE_PARM(reschedule_loops, "i", int, 0644,
98 "# of loops before scheduler does cond_resched()");
100 static int ack_puts = 0;
101 CFS_MODULE_PARM(ack_puts, "i", int, 0644,
102 "get portals to ack all PUTs");
105 static int ptltrace_on_timeout = 0;
106 CFS_MODULE_PARM(ptltrace_on_timeout, "i", int, 0644,
107 "dump ptltrace on timeout");
109 static char *ptltrace_basename = "/tmp/lnet-ptltrace";
110 CFS_MODULE_PARM(ptltrace_basename, "s", charp, 0644,
111 "ptltrace dump file basename");
114 static int simulation_bitmap = 0;
115 CFS_MODULE_PARM(simulation_bitmap, "i", int, 0444,
116 "simulation bitmap");
120 kptl_tunables_t kptllnd_tunables = {
122 .kptl_max_nodes = &max_nodes,
123 .kptl_max_procs_per_node = &max_procs_per_node,
124 .kptl_checksum = &checksum,
125 .kptl_portal = &portal,
127 .kptl_timeout = &timeout,
128 .kptl_rxb_npages = &rxb_npages,
129 .kptl_rxb_nspare = &rxb_nspare,
130 .kptl_credits = &credits,
131 .kptl_peercredits = &peercredits,
132 .kptl_max_msg_size = &max_msg_size,
133 .kptl_peer_hash_table_size = &peer_hash_table_size,
134 .kptl_reschedule_loops = &reschedule_loops,
135 .kptl_ack_puts = &ack_puts,
137 .kptl_ptltrace_on_timeout = &ptltrace_on_timeout,
138 .kptl_ptltrace_basename = &ptltrace_basename,
141 .kptl_simulation_bitmap = &simulation_bitmap,
146 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
148 static char ptltrace_basename_space[1024];
151 kptllnd_init_strtunable(char **str_param, char *space, int size)
153 strncpy(space, *str_param, size);
159 #ifndef HAVE_SYSCTL_UNNUMBERED
164 KPTLLND_MAX_PROC_PER_NODE,
172 KPTLLND_MAX_MSG_SIZE,
173 KPTLLND_PEER_HASH_SIZE,
174 KPTLLND_RESHEDULE_LOOPS,
176 KPTLLND_TRACETIMEOUT,
177 KPTLLND_TRACEBASENAME,
178 KPTLLND_SIMULATION_BITMAP
182 #define KPTLLND_NTX CTL_UNNUMBERED
183 #define KPTLLND_MAX_NODES CTL_UNNUMBERED
184 #define KPTLLND_MAX_PROC_PER_NODE CTL_UNNUMBERED
185 #define KPTLLND_CHECKSUM CTL_UNNUMBERED
186 #define KPTLLND_TIMEOUT CTL_UNNUMBERED
187 #define KPTLLND_PORTAL CTL_UNNUMBERED
188 #define KPTLLND_PID CTL_UNNUMBERED
189 #define KPTLLND_RXB_PAGES CTL_UNNUMBERED
190 #define KPTLLND_CREDITS CTL_UNNUMBERED
191 #define KPTLLND_PEERCREDITS CTL_UNNUMBERED
192 #define KPTLLND_MAX_MSG_SIZE CTL_UNNUMBERED
193 #define KPTLLND_PEER_HASH_SIZE CTL_UNNUMBERED
194 #define KPTLLND_RESHEDULE_LOOPS CTL_UNNUMBERED
195 #define KPTLLND_ACK_PUTS CTL_UNNUMBERED
196 #define KPTLLND_TRACETIMEOUT CTL_UNNUMBERED
197 #define KPTLLND_TRACEBASENAME CTL_UNNUMBERED
198 #define KPTLLND_SIMULATION_BITMAP CTL_UNNUMBERED
201 static cfs_sysctl_table_t kptllnd_ctl_table[] = {
203 .ctl_name = KPTLLND_NTX,
206 .maxlen = sizeof(int),
208 .proc_handler = &proc_dointvec
211 .ctl_name = KPTLLND_MAX_NODES,
212 .procname = "max_nodes",
214 .maxlen = sizeof(int),
216 .proc_handler = &proc_dointvec
219 .ctl_name = KPTLLND_MAX_PROC_PER_NODE,
220 .procname = "max_procs_per_node",
221 .data = &max_procs_per_node,
222 .maxlen = sizeof(int),
224 .proc_handler = &proc_dointvec
227 .ctl_name = KPTLLND_CHECKSUM,
228 .procname = "checksum",
230 .maxlen = sizeof(int),
232 .proc_handler = &proc_dointvec
235 .ctl_name = KPTLLND_TIMEOUT,
236 .procname = "timeout",
238 .maxlen = sizeof(int),
240 .proc_handler = &proc_dointvec
243 .ctl_name = KPTLLND_PORTAL,
244 .procname = "portal",
246 .maxlen = sizeof(int),
248 .proc_handler = &proc_dointvec
251 .ctl_name = KPTLLND_PID,
254 .maxlen = sizeof(int),
256 .proc_handler = &proc_dointvec
259 .ctl_name = KPTLLND_RXB_PAGES,
260 .procname = "rxb_npages",
262 .maxlen = sizeof(int),
264 .proc_handler = &proc_dointvec
267 .ctl_name = KPTLLND_CREDITS,
268 .procname = "credits",
270 .maxlen = sizeof(int),
272 .proc_handler = &proc_dointvec
275 .ctl_name = KPTLLND_PEERCREDITS,
276 .procname = "peercredits",
277 .data = &peercredits,
278 .maxlen = sizeof(int),
280 .proc_handler = &proc_dointvec
283 .ctl_name = KPTLLND_MAX_MSG_SIZE,
284 .procname = "max_msg_size",
285 .data = &max_msg_size,
286 .maxlen = sizeof(int),
288 .proc_handler = &proc_dointvec
291 .ctl_name = KPTLLND_PEER_HASH_SIZE,
292 .procname = "peer_hash_table_size",
293 .data = &peer_hash_table_size,
294 .maxlen = sizeof(int),
296 .proc_handler = &proc_dointvec
299 .ctl_name = KPTLLND_RESHEDULE_LOOPS,
300 .procname = "reschedule_loops",
301 .data = &reschedule_loops,
302 .maxlen = sizeof(int),
304 .proc_handler = &proc_dointvec
307 .ctl_name = KPTLLND_ACK_PUTS,
308 .procname = "ack_puts",
310 .maxlen = sizeof(int),
312 .proc_handler = &proc_dointvec
316 .ctl_name = KPTLLND_TRACETIMEOUT,
317 .procname = "ptltrace_on_timeout",
318 .data = &ptltrace_on_timeout,
319 .maxlen = sizeof(int),
321 .proc_handler = &proc_dointvec
324 .ctl_name = KPTLLND_TRACEBASENAME,
325 .procname = "ptltrace_basename",
326 .data = ptltrace_basename_space,
327 .maxlen = sizeof(ptltrace_basename_space),
329 .proc_handler = &proc_dostring,
330 .strategy = &sysctl_string
335 .ctl_name = KPTLLND_SIMULATION_BITMAP,
336 .procname = "simulation_bitmap",
337 .data = &simulation_bitmap,
338 .maxlen = sizeof(int),
340 .proc_handler = &proc_dointvec
347 static cfs_sysctl_table_t kptllnd_top_ctl_table[] = {
349 .ctl_name = CTL_PTLLND,
350 .procname = "ptllnd",
354 .child = kptllnd_ctl_table
360 kptllnd_tunables_init ()
363 kptllnd_init_strtunable(&ptltrace_basename,
364 ptltrace_basename_space,
365 sizeof(ptltrace_basename_space));
367 kptllnd_tunables.kptl_sysctl =
368 cfs_register_sysctl_table(kptllnd_top_ctl_table, 0);
370 if (kptllnd_tunables.kptl_sysctl == NULL)
371 CWARN("Can't setup /proc tunables\n");
377 kptllnd_tunables_fini ()
379 if (kptllnd_tunables.kptl_sysctl != NULL)
380 cfs_unregister_sysctl_table(kptllnd_tunables.kptl_sysctl);
386 kptllnd_tunables_init ()
392 kptllnd_tunables_fini ()