2 * include/asm-s390/debug.h
5 * Copyright (C) 1999, 2000 IBM Deutschland Entwicklung GmbH,
13 * struct __debug_entry must be defined outside of #ifdef __KERNEL__
14 * in order to allow a user program to analyze the 'raw'-view.
20 unsigned long long clock:52;
21 unsigned long long exception:1;
22 unsigned long long level:3;
23 unsigned long long cpuid:8;
26 unsigned long long stck;
29 } __attribute__((packed));
32 #define __DEBUG_FEATURE_VERSION 1 /* version of debug feature */
35 #include <linux/version.h>
36 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
37 #include <asm/spinlock.h>
39 #include <linux/spinlock.h>
40 #endif /* LINUX_VERSION_CODE */
41 #include <linux/kernel.h>
42 #include <linux/time.h>
43 #include <linux/proc_fs.h>
45 #define DEBUG_MAX_LEVEL 6 /* debug levels range from 0 to 6 */
46 #define DEBUG_OFF_LEVEL -1 /* level where debug is switched off */
47 #define DEBUG_FLUSH_ALL -1 /* parameter to flush all areas */
48 #define DEBUG_MAX_VIEWS 10 /* max number of views in proc fs */
49 #define DEBUG_MAX_PROCF_LEN 16 /* max length for a proc file name */
50 #define DEBUG_DEFAULT_LEVEL 3 /* initial debug level */
52 #define DEBUG_DIR_ROOT "s390dbf" /* name of debug root directory in proc fs */
54 #define DEBUG_DATA(entry) (char*)(entry + 1) /* data is stored behind */
55 /* the entry information */
57 #define STCK(x) asm volatile ("STCK 0(%0)" : : "a" (&(x)) : "memory", "cc")
59 typedef struct __debug_entry debug_entry_t;
63 typedef struct debug_info {
64 struct debug_info* next;
65 struct debug_info* prev;
73 debug_entry_t** areas;
76 struct proc_dir_entry* proc_root_entry;
77 struct proc_dir_entry* proc_entries[DEBUG_MAX_VIEWS];
78 struct debug_view* views[DEBUG_MAX_VIEWS];
79 char name[DEBUG_MAX_PROCF_LEN];
82 typedef int (debug_header_proc_t) (debug_info_t* id,
83 struct debug_view* view,
88 typedef int (debug_format_proc_t) (debug_info_t* id,
89 struct debug_view* view, char* out_buf,
91 typedef int (debug_prolog_proc_t) (debug_info_t* id,
92 struct debug_view* view,
94 typedef int (debug_input_proc_t) (debug_info_t* id,
95 struct debug_view* view,
96 struct file* file, const char* user_buf,
97 size_t in_buf_size, loff_t* offset);
99 int debug_dflt_header_fn(debug_info_t* id, struct debug_view* view,
100 int area, debug_entry_t* entry, char* out_buf);
103 char name[DEBUG_MAX_PROCF_LEN];
104 debug_prolog_proc_t* prolog_proc;
105 debug_header_proc_t* header_proc;
106 debug_format_proc_t* format_proc;
107 debug_input_proc_t* input_proc;
111 extern struct debug_view debug_hex_ascii_view;
112 extern struct debug_view debug_raw_view;
113 extern struct debug_view debug_sprintf_view;
115 /* do NOT use the _common functions */
117 debug_entry_t* debug_event_common(debug_info_t* id, int level,
118 const void* data, int length);
120 debug_entry_t* debug_exception_common(debug_info_t* id, int level,
121 const void* data, int length);
123 /* Debug Feature API: */
125 debug_info_t* debug_register(char* name, int pages_index, int nr_areas,
128 void debug_unregister(debug_info_t* id);
130 void debug_set_level(debug_info_t* id, int new_level);
132 extern inline debug_entry_t*
133 debug_event(debug_info_t* id, int level, void* data, int length)
135 if ((!id) || (level > id->level)) return NULL;
136 return debug_event_common(id,level,data,length);
139 extern inline debug_entry_t*
140 debug_int_event(debug_info_t* id, int level, unsigned int tag)
143 if ((!id) || (level > id->level)) return NULL;
144 return debug_event_common(id,level,&t,sizeof(unsigned int));
147 extern inline debug_entry_t *
148 debug_long_event (debug_info_t* id, int level, unsigned long tag)
151 if ((!id) || (level > id->level)) return NULL;
152 return debug_event_common(id,level,&t,sizeof(unsigned long));
155 extern inline debug_entry_t*
156 debug_text_event(debug_info_t* id, int level, const char* txt)
158 if ((!id) || (level > id->level)) return NULL;
159 return debug_event_common(id,level,txt,strlen(txt));
162 extern debug_entry_t *
163 debug_sprintf_event(debug_info_t* id,int level,char *string,...);
166 extern inline debug_entry_t*
167 debug_exception(debug_info_t* id, int level, void* data, int length)
169 if ((!id) || (level > id->level)) return NULL;
170 return debug_exception_common(id,level,data,length);
173 extern inline debug_entry_t*
174 debug_int_exception(debug_info_t* id, int level, unsigned int tag)
177 if ((!id) || (level > id->level)) return NULL;
178 return debug_exception_common(id,level,&t,sizeof(unsigned int));
181 extern inline debug_entry_t *
182 debug_long_exception (debug_info_t* id, int level, unsigned long tag)
185 if ((!id) || (level > id->level)) return NULL;
186 return debug_exception_common(id,level,&t,sizeof(unsigned long));
189 extern inline debug_entry_t*
190 debug_text_exception(debug_info_t* id, int level, const char* txt)
192 if ((!id) || (level > id->level)) return NULL;
193 return debug_exception_common(id,level,txt,strlen(txt));
197 extern debug_entry_t *
198 debug_sprintf_exception(debug_info_t* id,int level,char *string,...);
200 int debug_register_view(debug_info_t* id, struct debug_view* view);
201 int debug_unregister_view(debug_info_t* id, struct debug_view* view);
204 define the debug levels:
205 - 0 No debugging output to console or syslog
206 - 1 Log internal errors to syslog, ignore check conditions
207 - 2 Log internal errors and check conditions to syslog
208 - 3 Log internal errors to console, log check conditions to syslog
209 - 4 Log internal errors and check conditions to console
210 - 5 panic on internal errors, log check conditions to console
211 - 6 panic on both, internal errors and check conditions
215 #define DEBUG_LEVEL 4
218 #define INTERNAL_ERRMSG(x,y...) "E" __FILE__ "%d: " x, __LINE__, y
219 #define INTERNAL_WRNMSG(x,y...) "W" __FILE__ "%d: " x, __LINE__, y
220 #define INTERNAL_INFMSG(x,y...) "I" __FILE__ "%d: " x, __LINE__, y
221 #define INTERNAL_DEBMSG(x,y...) "D" __FILE__ "%d: " x, __LINE__, y
224 #define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
225 #define PRINT_INFO(x...) printk ( KERN_INFO PRINTK_HEADER x )
226 #define PRINT_WARN(x...) printk ( KERN_WARNING PRINTK_HEADER x )
227 #define PRINT_ERR(x...) printk ( KERN_ERR PRINTK_HEADER x )
228 #define PRINT_FATAL(x...) panic ( PRINTK_HEADER x )
230 #define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
231 #define PRINT_INFO(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
232 #define PRINT_WARN(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
233 #define PRINT_ERR(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
234 #define PRINT_FATAL(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
235 #endif /* DASD_DEBUG */
238 #define INTERNAL_ERROR(x...) PRINT_FATAL ( INTERNAL_ERRMSG ( x ) )
240 #define INTERNAL_ERROR(x...) PRINT_ERR ( INTERNAL_ERRMSG ( x ) )
242 #define INTERNAL_ERROR(x...) PRINT_WARN ( INTERNAL_ERRMSG ( x ) )
244 #define INTERNAL_ERROR(x...)
245 #endif /* DASD_DEBUG */
248 #define INTERNAL_CHECK(x...) PRINT_FATAL ( INTERNAL_CHKMSG ( x ) )
250 #define INTERNAL_CHECK(x...) PRINT_ERR ( INTERNAL_CHKMSG ( x ) )
252 #define INTERNAL_CHECK(x...) PRINT_WARN ( INTERNAL_CHKMSG ( x ) )
254 #define INTERNAL_CHECK(x...)
255 #endif /* DASD_DEBUG */
260 #define kmalloc(x...) (PRINT_INFO(" kmalloc %p\n",b=kmalloc(x)),b)
261 #define kfree(x) PRINT_INFO(" kfree %p\n",x);kfree(x)
262 #define get_free_page(x...) (PRINT_INFO(" gfp %p\n",b=get_free_page(x)),b)
263 #define __get_free_pages(x...) (PRINT_INFO(" gfps %p\n",b=__get_free_pages(x)),b)
264 #endif /* DEBUG_MALLOC */
266 #endif /* __KERNEL__ */