260 lines
8.1 KiB
C
260 lines
8.1 KiB
C
|
/*
|
||
|
|
* 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];
|
||
|
|
mode_t mode;
|
||
|
|
} 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(const char *name, int pages, int nr_areas,
|
||
|
|
int buf_size);
|
||
|
|
|
||
|
|
debug_info_t *debug_register_mode(const char *name, int pages, int nr_areas,
|
||
|
|
int buf_size, mode_t mode, uid_t uid,
|
||
|
|
gid_t gid);
|
||
|
|
|
||
|
|
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));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* IMPORTANT: Use "%s" in sprintf format strings with care! Only pointers are
|
||
|
|
* stored in the s390dbf. See Documentation/s390/s390dbf.txt for more details!
|
||
|
|
*/
|
||
|
|
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));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* IMPORTANT: Use "%s" in sprintf format strings with care! Only pointers are
|
||
|
|
* stored in the s390dbf. See Documentation/s390/s390dbf.txt for more details!
|
||
|
|
*/
|
||
|
|
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 */
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
#endif /* DEBUG_H */
|