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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 | /* * include/asm-s390/debug.h * S/390 debug facility * * Copyright (C) 1999, 2000 IBM Deutschland Entwicklung GmbH, * IBM Corporation */ #ifndef DEBUG_H #define DEBUG_H /* Note: * struct __debug_entry must be defined outside of #ifdef __KERNEL__ * in order to allow a user program to analyze the 'raw'-view. */ struct __debug_entry{ union { struct { unsigned long long clock:52; unsigned long long exception:1; unsigned long long level:3; unsigned long long cpuid:8; } fields; unsigned long long stck; } id; void* caller; } __attribute__((packed)); #define __DEBUG_FEATURE_VERSION 1 /* version of debug feature */ #ifdef __KERNEL__ #include <linux/version.h> #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)) #include <asm/spinlock.h> #else #include <linux/spinlock.h> #endif /* LINUX_VERSION_CODE */ #include <linux/kernel.h> #include <linux/time.h> #include <linux/proc_fs.h> #define DEBUG_MAX_LEVEL 6 /* debug levels range from 0 to 6 */ #define DEBUG_OFF_LEVEL -1 /* level where debug is switched off */ #define DEBUG_FLUSH_ALL -1 /* parameter to flush all areas */ #define DEBUG_MAX_VIEWS 10 /* max number of views in proc fs */ #define DEBUG_MAX_PROCF_LEN 16 /* max length for a proc file name */ #define DEBUG_DEFAULT_LEVEL 3 /* initial debug level */ #define DEBUG_DIR_ROOT "s390dbf" /* name of debug root directory in proc fs */ #define DEBUG_DATA(entry) (char*)(entry + 1) /* data is stored behind */ /* the entry information */ #define STCK(x) asm volatile ("STCK %0" : "=m" (x) : : "cc" ) typedef struct __debug_entry debug_entry_t; struct debug_view; typedef struct debug_info { struct debug_info* next; struct debug_info* prev; atomic_t ref_count; spinlock_t lock; int level; int nr_areas; int page_order; int buf_size; int entry_size; debug_entry_t** areas; int active_area; int *active_entry; struct proc_dir_entry* proc_root_entry; struct proc_dir_entry* proc_entries[DEBUG_MAX_VIEWS]; struct debug_view* views[DEBUG_MAX_VIEWS]; char name[DEBUG_MAX_PROCF_LEN]; } debug_info_t; typedef int (debug_header_proc_t) (debug_info_t* id, struct debug_view* view, int area, debug_entry_t* entry, char* out_buf); typedef int (debug_format_proc_t) (debug_info_t* id, struct debug_view* view, char* out_buf, const char* in_buf); typedef int (debug_prolog_proc_t) (debug_info_t* id, struct debug_view* view, char* out_buf); typedef int (debug_input_proc_t) (debug_info_t* id, struct debug_view* view, struct file* file, const char* user_buf, size_t in_buf_size, loff_t* offset); int debug_dflt_header_fn(debug_info_t* id, struct debug_view* view, int area, debug_entry_t* entry, char* out_buf); struct debug_view { char name[DEBUG_MAX_PROCF_LEN]; debug_prolog_proc_t* prolog_proc; debug_header_proc_t* header_proc; debug_format_proc_t* format_proc; debug_input_proc_t* input_proc; void* private_data; }; extern struct debug_view debug_hex_ascii_view; extern struct debug_view debug_raw_view; extern struct debug_view debug_sprintf_view; /* do NOT use the _common functions */ debug_entry_t* debug_event_common(debug_info_t* id, int level, const void* data, int length); debug_entry_t* debug_exception_common(debug_info_t* id, int level, const void* data, int length); /* Debug Feature API: */ debug_info_t* debug_register(char* name, int pages_index, int nr_areas, int buf_size); void debug_unregister(debug_info_t* id); void debug_set_level(debug_info_t* id, int new_level); extern inline debug_entry_t* debug_event(debug_info_t* id, int level, void* data, int length) { if ((!id) || (level > id->level)) return NULL; return debug_event_common(id,level,data,length); } extern inline debug_entry_t* debug_int_event(debug_info_t* id, int level, unsigned int tag) { unsigned int t=tag; if ((!id) || (level > id->level)) return NULL; return debug_event_common(id,level,&t,sizeof(unsigned int)); } extern inline debug_entry_t * debug_long_event (debug_info_t* id, int level, unsigned long tag) { unsigned long t=tag; if ((!id) || (level > id->level)) return NULL; return debug_event_common(id,level,&t,sizeof(unsigned long)); } extern inline debug_entry_t* debug_text_event(debug_info_t* id, int level, const char* txt) { if ((!id) || (level > id->level)) return NULL; return debug_event_common(id,level,txt,strlen(txt)); } extern debug_entry_t * debug_sprintf_event(debug_info_t* id,int level,char *string,...); extern inline debug_entry_t* debug_exception(debug_info_t* id, int level, void* data, int length) { if ((!id) || (level > id->level)) return NULL; return debug_exception_common(id,level,data,length); } extern inline debug_entry_t* debug_int_exception(debug_info_t* id, int level, unsigned int tag) { unsigned int t=tag; if ((!id) || (level > id->level)) return NULL; return debug_exception_common(id,level,&t,sizeof(unsigned int)); } extern inline debug_entry_t * debug_long_exception (debug_info_t* id, int level, unsigned long tag) { unsigned long t=tag; if ((!id) || (level > id->level)) return NULL; return debug_exception_common(id,level,&t,sizeof(unsigned long)); } extern inline debug_entry_t* debug_text_exception(debug_info_t* id, int level, const char* txt) { if ((!id) || (level > id->level)) return NULL; return debug_exception_common(id,level,txt,strlen(txt)); } extern debug_entry_t * debug_sprintf_exception(debug_info_t* id,int level,char *string,...); int debug_register_view(debug_info_t* id, struct debug_view* view); int debug_unregister_view(debug_info_t* id, struct debug_view* view); /* define the debug levels: - 0 No debugging output to console or syslog - 1 Log internal errors to syslog, ignore check conditions - 2 Log internal errors and check conditions to syslog - 3 Log internal errors to console, log check conditions to syslog - 4 Log internal errors and check conditions to console - 5 panic on internal errors, log check conditions to console - 6 panic on both, internal errors and check conditions */ #ifndef DEBUG_LEVEL #define DEBUG_LEVEL 4 #endif #define INTERNAL_ERRMSG(x,y...) "E" __FILE__ "%d: " x, __LINE__, y #define INTERNAL_WRNMSG(x,y...) "W" __FILE__ "%d: " x, __LINE__, y #define INTERNAL_INFMSG(x,y...) "I" __FILE__ "%d: " x, __LINE__, y #define INTERNAL_DEBMSG(x,y...) "D" __FILE__ "%d: " x, __LINE__, y #if DEBUG_LEVEL > 0 #define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) #define PRINT_INFO(x...) printk ( KERN_INFO PRINTK_HEADER x ) #define PRINT_WARN(x...) printk ( KERN_WARNING PRINTK_HEADER x ) #define PRINT_ERR(x...) printk ( KERN_ERR PRINTK_HEADER x ) #define PRINT_FATAL(x...) panic ( PRINTK_HEADER x ) #else #define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) #define PRINT_INFO(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) #define PRINT_WARN(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) #define PRINT_ERR(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) #define PRINT_FATAL(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) #endif /* DASD_DEBUG */ #if DASD_DEBUG > 4 #define INTERNAL_ERROR(x...) PRINT_FATAL ( INTERNAL_ERRMSG ( x ) ) #elif DASD_DEBUG > 2 #define INTERNAL_ERROR(x...) PRINT_ERR ( INTERNAL_ERRMSG ( x ) ) #elif DASD_DEBUG > 0 #define INTERNAL_ERROR(x...) PRINT_WARN ( INTERNAL_ERRMSG ( x ) ) #else #define INTERNAL_ERROR(x...) #endif /* DASD_DEBUG */ #if DASD_DEBUG > 5 #define INTERNAL_CHECK(x...) PRINT_FATAL ( INTERNAL_CHKMSG ( x ) ) #elif DASD_DEBUG > 3 #define INTERNAL_CHECK(x...) PRINT_ERR ( INTERNAL_CHKMSG ( x ) ) #elif DASD_DEBUG > 1 #define INTERNAL_CHECK(x...) PRINT_WARN ( INTERNAL_CHKMSG ( x ) ) #else #define INTERNAL_CHECK(x...) #endif /* DASD_DEBUG */ #undef DEBUG_MALLOC #ifdef DEBUG_MALLOC void *b; #define kmalloc(x...) (PRINT_INFO(" kmalloc %p\n",b=kmalloc(x)),b) #define kfree(x) PRINT_INFO(" kfree %p\n",x);kfree(x) #define get_free_page(x...) (PRINT_INFO(" gfp %p\n",b=get_free_page(x)),b) #define __get_free_pages(x...) (PRINT_INFO(" gfps %p\n",b=__get_free_pages(x)),b) #endif /* DEBUG_MALLOC */ #endif /* __KERNEL__ */ #endif /* DEBUG_H */ |