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
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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 #define DEBUG_SUBSYSTEM S_LNET
38 #define LUSTRE_TRACEFILE_PRIVATE
40 #include <libcfs/libcfs.h>
41 #include "tracefile.h"
44 #define get_cpu() smp_processor_id()
45 #define put_cpu() do { } while (0)
48 /* only define one trace_data type for windows */
55 /* percents to share the total debug memory for each type */
56 static unsigned int pages_factor[TCD_TYPE_MAX] = {
57 90, /* 90% pages for TCD_TYPE_PASSIVE */
58 10 /* 10% pages for TCD_TYPE_DISPATCH */
61 char *trace_console_buffers[NR_CPUS][TCD_TYPE_MAX];
63 struct rw_semaphore tracefile_sem;
65 int tracefile_init_arch()
69 struct trace_cpu_data *tcd;
71 init_rwsem(&tracefile_sem);
73 /* initialize trace_data */
74 memset(trace_data, 0, sizeof(trace_data));
75 for (i = 0; i < TCD_TYPE_MAX; i++) {
76 trace_data[i]=cfs_alloc(sizeof(union trace_data_union)*NR_CPUS,
78 if (trace_data[i] == NULL)
82 /* arch related info initialized */
83 tcd_for_each(tcd, i, j) {
84 tcd->tcd_pages_factor = (USHORT) pages_factor[i];
85 tcd->tcd_type = (USHORT) i;
86 tcd->tcd_cpu = (USHORT)j;
89 for (i = 0; i < num_possible_cpus(); i++)
90 for (j = 0; j < TCD_TYPE_MAX; j++) {
91 trace_console_buffers[i][j] =
92 cfs_alloc(TRACE_CONSOLE_BUFFER_SIZE,
95 if (trace_console_buffers[i][j] == NULL)
102 tracefile_fini_arch();
103 printk(KERN_ERR "lnet: No enough memory\n");
108 void tracefile_fini_arch()
113 for (i = 0; i < num_possible_cpus(); i++) {
114 for (j = 0; j < TCD_TYPE_MAX; j++) {
115 if (trace_console_buffers[i][j] != NULL) {
116 cfs_free(trace_console_buffers[i][j]);
117 trace_console_buffers[i][j] = NULL;
122 for (i = 0; trace_data[i] != NULL; i++) {
123 cfs_free(trace_data[i]);
124 trace_data[i] = NULL;
127 fini_rwsem(&tracefile_sem);
130 void tracefile_read_lock()
132 down_read(&tracefile_sem);
135 void tracefile_read_unlock()
137 up_read(&tracefile_sem);
140 void tracefile_write_lock()
142 down_write(&tracefile_sem);
145 void tracefile_write_unlock()
147 up_write(&tracefile_sem);
151 trace_get_console_buffer(void)
156 if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
157 type = TCD_TYPE_DISPATCH;
159 type = TCD_TYPE_PASSIVE;
160 return trace_console_buffers[cpu][type];
164 trace_put_console_buffer(char *buffer)
169 struct trace_cpu_data *
175 if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
176 type = TCD_TYPE_DISPATCH;
178 type = TCD_TYPE_PASSIVE;
179 return &(*trace_data[type])[cpu].tcd;
183 trace_put_tcd (struct trace_cpu_data *tcd)
188 int trace_lock_tcd(struct trace_cpu_data *tcd)
190 __LASSERT(tcd->tcd_type < TCD_TYPE_MAX);
194 void trace_unlock_tcd(struct trace_cpu_data *tcd)
196 __LASSERT(tcd->tcd_type < TCD_TYPE_MAX);
199 int tcd_owns_tage(struct trace_cpu_data *tcd, struct trace_page *tage)
202 * XXX nikita: do NOT call portals_debug_msg() (CDEBUG/ENTRY/EXIT)
203 * from here: this will lead to infinite recursion.
205 return tcd->tcd_cpu == tage->cpu;
209 set_ptldebug_header(struct ptldebug_header *header, int subsys, int mask,
210 const int line, unsigned long stack)
214 do_gettimeofday(&tv);
216 header->ph_subsys = subsys;
217 header->ph_mask = mask;
218 header->ph_cpu_id = smp_processor_id();
219 header->ph_sec = (__u32)tv.tv_sec;
220 header->ph_usec = tv.tv_usec;
221 header->ph_stack = stack;
222 header->ph_pid = (__u32)(ULONG_PTR)current->pid;
223 header->ph_line_num = line;
224 header->ph_extern_pid = 0;
228 void print_to_console(struct ptldebug_header *hdr, int mask, const char *buf,
229 int len, const char *file, const char *fn)
231 char *prefix = "Lustre", *ptype = NULL;
233 if ((mask & D_EMERG) != 0) {
234 prefix = "LustreError";
236 } else if ((mask & D_ERROR) != 0) {
237 prefix = "LustreError";
239 } else if ((mask & D_WARNING) != 0) {
241 ptype = KERN_WARNING;
242 } else if ((mask & (D_CONSOLE | libcfs_printk)) != 0) {
247 if ((mask & D_CONSOLE) != 0) {
248 printk("%s%s: %.*s", ptype, prefix, len, buf);
250 printk("%s%s: %d:%d:(%s:%d:%s()) %.*s", ptype, prefix, hdr->ph_pid,
251 hdr->ph_extern_pid, file, hdr->ph_line_num, fn, len, buf);
256 int trace_max_debug_mb(void)
258 int total_mb = (num_physpages >> (20 - CFS_PAGE_SHIFT));
260 return MAX(512, (total_mb * 80)/100);
264 trace_call_on_all_cpus(void (*fn)(void *_arg), void *arg)
267 KAFFINITY mask = cfs_query_thread_affinity();
269 for (cpu = 0; cpu < num_possible_cpus(); cpu++) {
270 if (cfs_tie_thread_to_cpu(cpu)) {
271 ASSERT((int)KeGetCurrentProcessorNumber() == cpu);
273 cfs_set_thread_affinity(mask);