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LU-459 tests: quiet spurious console/test messages
[fs/lustre-release.git] / libcfs / libcfs / winnt / winnt-tracefile.c
1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=8:tabstop=8:
3  *
4  * GPL HEADER START
5  *
6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7  *
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.
11  *
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).
17  *
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
21  *
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
24  * have any questions.
25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
30  * Use is subject to license terms.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  */
36
37 #define DEBUG_SUBSYSTEM S_LNET
38 #define LUSTRE_TRACEFILE_PRIVATE
39
40 #include <libcfs/libcfs.h>
41 #include "tracefile.h"
42
43 /* percents to share the total debug memory for each type */
44 static unsigned int pages_factor[CFS_TCD_TYPE_MAX] = {
45         90,  /* 90% pages for CFS_TCD_TYPE_PASSIVE */
46         10   /* 10% pages for CFS_TCD_TYPE_DISPATCH */
47 };
48
49 char *cfs_trace_console_buffers[CFS_NR_CPUS][CFS_TCD_TYPE_MAX];
50
51 cfs_rw_semaphore_t cfs_tracefile_sem;
52
53 int cfs_tracefile_init_arch()
54 {
55         int    i;
56         int    j;
57         struct cfs_trace_cpu_data *tcd;
58
59         cfs_init_rwsem(&cfs_tracefile_sem);
60
61         /* initialize trace_data */
62         memset(cfs_trace_data, 0, sizeof(cfs_trace_data));
63         for (i = 0; i < CFS_TCD_TYPE_MAX; i++) {
64                 cfs_trace_data[i] =
65                         cfs_alloc(sizeof(union cfs_trace_data_union) * \
66                                   CFS_NR_CPUS, GFP_KERNEL);
67                 if (cfs_trace_data[i] == NULL)
68                         goto out;
69         }
70
71         /* arch related info initialized */
72         cfs_tcd_for_each(tcd, i, j) {
73                 tcd->tcd_pages_factor = (USHORT) pages_factor[i];
74                 tcd->tcd_type = (USHORT) i;
75                 tcd->tcd_cpu = (USHORT)j;
76         }
77
78         for (i = 0; i < cfs_num_possible_cpus(); i++)
79                 for (j = 0; j < CFS_TCD_TYPE_MAX; j++) {
80                         cfs_trace_console_buffers[i][j] =
81                                 cfs_alloc(CFS_TRACE_CONSOLE_BUFFER_SIZE,
82                                           GFP_KERNEL);
83
84                         if (cfs_trace_console_buffers[i][j] == NULL)
85                                 goto out;
86                 }
87
88         return 0;
89
90 out:
91         cfs_tracefile_fini_arch();
92         printk(CFS_KERN_ERR "lnet: Not enough memory\n");
93         return -ENOMEM;
94
95 }
96
97 void cfs_tracefile_fini_arch()
98 {
99         int    i;
100         int    j;
101
102         for (i = 0; i < cfs_num_possible_cpus(); i++) {
103                 for (j = 0; j < CFS_TCD_TYPE_MAX; j++) {
104                         if (cfs_trace_console_buffers[i][j] != NULL) {
105                                 cfs_free(cfs_trace_console_buffers[i][j]);
106                                 cfs_trace_console_buffers[i][j] = NULL;
107                         }
108                 }
109         }
110
111         for (i = 0; cfs_trace_data[i] != NULL; i++) {
112                 cfs_free(cfs_trace_data[i]);
113                 cfs_trace_data[i] = NULL;
114         }
115
116         cfs_fini_rwsem(&cfs_tracefile_sem);
117 }
118
119 void cfs_tracefile_read_lock()
120 {
121         cfs_down_read(&cfs_tracefile_sem);
122 }
123
124 void cfs_tracefile_read_unlock()
125 {
126         cfs_up_read(&cfs_tracefile_sem);
127 }
128
129 void cfs_tracefile_write_lock()
130 {
131         cfs_down_write(&cfs_tracefile_sem);
132 }
133
134 void cfs_tracefile_write_unlock()
135 {
136         cfs_up_write(&cfs_tracefile_sem);
137 }
138
139 cfs_trace_buf_type_t cfs_trace_buf_idx_get()
140 {
141         if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
142                 return CFS_TCD_TYPE_DISPATCH;
143         else
144                 return CFS_TCD_TYPE_PASSIVE;
145 }
146
147 int cfs_trace_lock_tcd(struct cfs_trace_cpu_data *tcd)
148 {
149         __LASSERT(tcd->tcd_type < CFS_TCD_TYPE_MAX);
150         return 1;
151 }
152
153 void cfs_trace_unlock_tcd(struct cfs_trace_cpu_data *tcd)
154 {
155         __LASSERT(tcd->tcd_type < CFS_TCD_TYPE_MAX);
156 }
157
158 int cfs_tcd_owns_tage(struct cfs_trace_cpu_data *tcd,
159                       struct cfs_trace_page *tage)
160 {
161         /*
162          * XXX nikita: do NOT call portals_debug_msg() (CDEBUG/ENTRY/EXIT)
163          * from here: this will lead to infinite recursion.
164          */
165         return tcd->tcd_cpu == tage->cpu;
166 }
167
168 void
169 cfs_set_ptldebug_header(struct ptldebug_header *header, int subsys, int mask,
170                         const int line, unsigned long stack)
171 {
172         struct timeval tv;
173
174         cfs_gettimeofday(&tv);
175
176         header->ph_subsys = subsys;
177         header->ph_mask = mask;
178         header->ph_cpu_id = cfs_smp_processor_id();
179         header->ph_type = cfs_trace_buf_idx_get();
180         header->ph_sec = (__u32)tv.tv_sec;
181         header->ph_usec = tv.tv_usec;
182         header->ph_stack = stack;
183         header->ph_pid = (__u32)(ULONG_PTR)current->pid;
184         header->ph_line_num = line;
185         header->ph_extern_pid = 0;
186         return;
187 }
188
189 void cfs_print_to_console(struct ptldebug_header *hdr, int mask,
190                           const char *buf, int len, const char *file,
191                           const char *fn)
192 {
193         char *prefix = "Lustre", *ptype = NULL;
194
195         if ((mask & D_EMERG) != 0) {
196                 prefix = "LustreError";
197                 ptype = CFS_KERN_EMERG;
198         } else if ((mask & D_ERROR) != 0) {
199                 prefix = "LustreError";
200                 ptype = CFS_KERN_ERR;
201         } else if ((mask & D_WARNING) != 0) {
202                 prefix = "Lustre";
203                 ptype = CFS_KERN_WARNING;
204         } else if ((mask & (D_CONSOLE | libcfs_printk)) != 0) {
205                 prefix = "Lustre";
206                 ptype = CFS_KERN_INFO;
207         }
208
209         if ((mask & D_CONSOLE) != 0) {
210                 printk("%s%s: %.*s", ptype, prefix, len, buf);
211         } else {
212                 printk("%s%s: %d:%d:(%s:%d:%s()) %.*s", ptype, prefix, hdr->ph_pid,
213                        hdr->ph_extern_pid, file, hdr->ph_line_num, fn, len, buf);
214         }
215         return;
216 }
217
218 int cfs_trace_max_debug_mb(void)
219 {
220         int  total_mb = (cfs_num_physpages >> (20 - CFS_PAGE_SHIFT));
221         
222         return MAX(512, (total_mb * 80)/100);
223 }