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"
43 /* percents to share the total debug memory for each type */
44 static unsigned int pages_factor[TCD_TYPE_MAX] = {
45 90, /* 90% pages for TCD_TYPE_PASSIVE */
46 10 /* 10% pages for TCD_TYPE_DISPATCH */
49 char *trace_console_buffers[NR_CPUS][TCD_TYPE_MAX];
51 struct rw_semaphore tracefile_sem;
53 int tracefile_init_arch()
57 struct trace_cpu_data *tcd;
59 init_rwsem(&tracefile_sem);
61 /* initialize trace_data */
62 memset(trace_data, 0, sizeof(trace_data));
63 for (i = 0; i < TCD_TYPE_MAX; i++) {
64 trace_data[i]=cfs_alloc(sizeof(union trace_data_union)*NR_CPUS,
66 if (trace_data[i] == NULL)
70 /* arch related info initialized */
71 tcd_for_each(tcd, i, j) {
72 tcd->tcd_pages_factor = (USHORT) pages_factor[i];
73 tcd->tcd_type = (USHORT) i;
74 tcd->tcd_cpu = (USHORT)j;
77 for (i = 0; i < num_possible_cpus(); i++)
78 for (j = 0; j < TCD_TYPE_MAX; j++) {
79 trace_console_buffers[i][j] =
80 cfs_alloc(TRACE_CONSOLE_BUFFER_SIZE,
83 if (trace_console_buffers[i][j] == NULL)
90 tracefile_fini_arch();
91 printk(KERN_ERR "lnet: No enough memory\n");
96 void tracefile_fini_arch()
101 for (i = 0; i < num_possible_cpus(); i++) {
102 for (j = 0; j < TCD_TYPE_MAX; j++) {
103 if (trace_console_buffers[i][j] != NULL) {
104 cfs_free(trace_console_buffers[i][j]);
105 trace_console_buffers[i][j] = NULL;
110 for (i = 0; trace_data[i] != NULL; i++) {
111 cfs_free(trace_data[i]);
112 trace_data[i] = NULL;
115 fini_rwsem(&tracefile_sem);
118 void tracefile_read_lock()
120 down_read(&tracefile_sem);
123 void tracefile_read_unlock()
125 up_read(&tracefile_sem);
128 void tracefile_write_lock()
130 down_write(&tracefile_sem);
133 void tracefile_write_unlock()
135 up_write(&tracefile_sem);
141 if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
142 return TCD_TYPE_DISPATCH;
144 return TCD_TYPE_PASSIVE;
147 int trace_lock_tcd(struct trace_cpu_data *tcd)
149 __LASSERT(tcd->tcd_type < TCD_TYPE_MAX);
153 void trace_unlock_tcd(struct trace_cpu_data *tcd)
155 __LASSERT(tcd->tcd_type < TCD_TYPE_MAX);
158 int tcd_owns_tage(struct trace_cpu_data *tcd, struct trace_page *tage)
161 * XXX nikita: do NOT call portals_debug_msg() (CDEBUG/ENTRY/EXIT)
162 * from here: this will lead to infinite recursion.
164 return tcd->tcd_cpu == tage->cpu;
168 set_ptldebug_header(struct ptldebug_header *header, int subsys, int mask,
169 const int line, unsigned long stack)
173 do_gettimeofday(&tv);
175 header->ph_subsys = subsys;
176 header->ph_mask = mask;
177 header->ph_cpu_id = smp_processor_id();
178 header->ph_sec = (__u32)tv.tv_sec;
179 header->ph_usec = tv.tv_usec;
180 header->ph_stack = stack;
181 header->ph_pid = (__u32)(ULONG_PTR)current->pid;
182 header->ph_line_num = line;
183 header->ph_extern_pid = 0;
187 void print_to_console(struct ptldebug_header *hdr, int mask, const char *buf,
188 int len, const char *file, const char *fn)
190 char *prefix = "Lustre", *ptype = NULL;
192 if ((mask & D_EMERG) != 0) {
193 prefix = "LustreError";
195 } else if ((mask & D_ERROR) != 0) {
196 prefix = "LustreError";
198 } else if ((mask & D_WARNING) != 0) {
200 ptype = KERN_WARNING;
201 } else if ((mask & (D_CONSOLE | libcfs_printk)) != 0) {
206 if ((mask & D_CONSOLE) != 0) {
207 printk("%s%s: %.*s", ptype, prefix, len, buf);
209 printk("%s%s: %d:%d:(%s:%d:%s()) %.*s", ptype, prefix, hdr->ph_pid,
210 hdr->ph_extern_pid, file, hdr->ph_line_num, fn, len, buf);
215 int trace_max_debug_mb(void)
217 int total_mb = (num_physpages >> (20 - CFS_PAGE_SHIFT));
219 return MAX(512, (total_mb * 80)/100);