debug.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:8k
- /*
- * 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(%0)" : : "a" (&(x)) : "memory", "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 %pn",b=kmalloc(x)),b)
- #define kfree(x) PRINT_INFO(" kfree %pn",x);kfree(x)
- #define get_free_page(x...) (PRINT_INFO(" gfp %pn",b=get_free_page(x)),b)
- #define __get_free_pages(x...) (PRINT_INFO(" gfps %pn",b=__get_free_pages(x)),b)
- #endif /* DEBUG_MALLOC */
- #endif /* __KERNEL__ */
- #endif /* DEBUG_H */