2 #define DEBUG_SUBSYSTEM S_PORTALS
3 #define LUSTRE_TRACEFILE_PRIVATE
4 #include <libcfs/libcfs.h>
5 #include <libcfs/kp30.h>
9 * We can't support smp tracefile currently.
10 * Everything is put on one cpu.
13 #define M_TCD_MAX_PAGES (128 * 1280)
14 extern union trace_data_union trace_data[NR_CPUS];
15 extern char *tracefile;
16 extern long long tracefile_size;
17 extern struct rw_semaphore tracefile_sem;
18 extern int trace_start_thread(void);
19 extern void trace_stop_thread(void);
21 long max_debug_mb = M_TCD_MAX_PAGES;
22 static long max_permit_mb = (64 * 1024);
24 inline struct trace_cpu_data *
25 __trace_get_tcd (unsigned long *flags)
27 return &trace_data[0].tcd;
31 __trace_put_tcd (struct trace_cpu_data *tcd, unsigned long flags)
37 set_ptldebug_header(struct ptldebug_header *header, int subsys, int mask,
38 const int line, unsigned long stack)
43 header->ph_subsys = subsys;
44 header->ph_mask = mask;
45 header->ph_cpu_id = smp_processor_id();
46 header->ph_sec = (__u32)tv.tv_sec;
47 header->ph_usec = tv.tv_usec;
48 header->ph_stack = stack;
50 header->ph_line_num = line;
51 header->ph_extern_pid = 0;
54 void print_to_console(struct ptldebug_header *hdr, int mask, char *buf,
55 int len, char *file, const char *fn)
57 char *prefix = NULL, *ptype = NULL;
59 if ((mask & D_EMERG) != 0) {
60 prefix = "LustreError";
62 } else if ((mask & D_ERROR) != 0) {
63 prefix = "LustreError";
65 } else if ((mask & D_WARNING) != 0) {
68 } else if (portal_printk != 0) {
72 printk("%s%s: %d:%d:(%s:%d:%s()) %*s", ptype, prefix, hdr->ph_pid,
73 hdr->ph_extern_pid, file, hdr->ph_line_num, fn, len, buf);
77 * Sysctl handle of libcfs
79 int cfs_trace_daemon SYSCTL_HANDLER_ARGS
84 MALLOC(name, char *, req->newlen + 1, M_TEMP, M_WAITOK | M_ZERO);
87 down_write(&tracefile_sem);
88 error = sysctl_handle_string(oidp, name, req->newlen + 1, req);
89 if (!error || req->newptr != NULL) {
91 if (strcmp(name, "stop") == 0) {
92 /* stop tracefile daemon */
96 }else if (strncmp(name, "size=", 5) == 0) {
97 tracefile_size = simple_strtoul(name + 5, NULL, 0);
98 if (tracefile_size < 10 || tracefile_size > 20480)
99 tracefile_size = TRACEFILE_SIZE;
101 tracefile_size <<= 20;
105 if (name[0] != '/') {
109 if (tracefile != NULL)
113 trace_start_thread();
114 } else if (req->newptr != NULL) {
115 /* Something was wrong with the write request */
116 printf("sysctl debug daemon failed: %d.\n", error);
120 SYSCTL_OUT(req, tracefile, sizeof(tracefile));
125 up_write(&tracefile_sem);
130 int cfs_debug_mb SYSCTL_HANDLER_ARGS
135 error = sysctl_handle_long(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
136 if (!error && req->newptr != NULL) {
137 /* We have a new value stored in the standard location */
138 if (max_debug_mb <= 0)
140 if (max_debug_mb > max_permit_mb) {
141 printf("sysctl debug_mb is too big: %d.\n", max_debug_mb);
144 for (i = 0; i < NR_CPUS; i++) {
145 struct trace_cpu_data *tcd;
146 tcd = &trace_data[i].tcd;
147 tcd->tcd_max_pages = max_debug_mb;
149 } else if (req->newptr != NULL) {
150 /* Something was wrong with the write request */
151 printf ("sysctl debug_mb fault: %d.\n", error);
154 error = SYSCTL_OUT(req, &max_debug_mb, sizeof max_debug_mb);