/* * 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 #include <linux/fs.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 2 /* version of debug feature */ #ifdef __KERNEL__ #include <linux/string.h> #include <linux/spinlock.h> #include <linux/kernel.h> #include <linux/time.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_NAME_LEN 64 /* max length for a debugfs 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 */ 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 pages_per_area; int buf_size; int entry_size; debug_entry_t*** areas; int active_area; int *active_pages; int *active_entries; struct dentry* debugfs_root_entry; struct dentry* debugfs_entries[DEBUG_MAX_VIEWS]; struct debug_view* views[DEBUG_MAX_VIEWS]; char name[DEBUG_MAX_NAME_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 *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_NAME_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, int nr_areas, int buf_size); void debug_unregister(debug_info_t* id); void debug_set_level(debug_info_t* id, int new_level); void debug_stop_all(void); static inline debug_entry_t* debug_event(debug_info_t* id, int level, void* data, int length) { if ((!id) || (level > id->level) || (id->pages_per_area == 0)) return NULL; return debug_event_common(id,level,data,length); } static 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) || (id->pages_per_area == 0)) return NULL; return debug_event_common(id,level,&t,sizeof(unsigned int)); } static 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) || (id->pages_per_area == 0)) return NULL; return debug_event_common(id,level,&t,sizeof(unsigned long)); } static inline debug_entry_t* debug_text_event(debug_info_t* id, int level, const char* txt) { if ((!id) || (level > id->level) || (id->pages_per_area == 0)) 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,...) __attribute__ ((format(printf, 3, 4))); static inline debug_entry_t* debug_exception(debug_info_t* id, int level, void* data, int length) { if ((!id) || (level > id->level) || (id->pages_per_area == 0)) return NULL; return debug_exception_common(id,level,data,length); } static 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) || (id->pages_per_area == 0)) return NULL; return debug_exception_common(id,level,&t,sizeof(unsigned int)); } static 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) || (id->pages_per_area == 0)) return NULL; return debug_exception_common(id,level,&t,sizeof(unsigned long)); } static inline debug_entry_t* debug_text_exception(debug_info_t* id, int level, const char* txt) { if ((!id) || (level > id->level) || (id->pages_per_area == 0)) 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,...) __attribute__ ((format(printf, 3, 4))); 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 */ #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_zeroed_page(x...) (PRINT_INFO(" gfp %p\n",b=get_zeroed_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 */