include/asm-s390/debug.h - kernel/msm - Gitiles

 /*
  *  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/config.h>
 #include <linux/fs.h>
 #include <linux/string.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/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 */

 #define STCK(x)	asm volatile ("STCK 0(%1)" : "=m" (x) : "a" (&(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 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);

 extern 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);
 }

 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) || (id->pages_per_area == 0))
 		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) || (id->pages_per_area == 0))
 		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) || (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)));


 extern 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);
 }

 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) || (id->pages_per_area == 0))
 		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) || (id->pages_per_area == 0))
 		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) || (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 */
	/*
	* 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/config.h>
	#include <linux/fs.h>
	#include <linux/string.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/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 */

	#define STCK(x) asm volatile ("STCK 0(%1)" : "=m" (x) : "a" (&(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 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);

	extern 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);
	}

	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) \|\| (id->pages_per_area == 0))
	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) \|\| (id->pages_per_area == 0))
	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) \|\| (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)));


	extern 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);
	}

	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) \|\| (id->pages_per_area == 0))
	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) \|\| (id->pages_per_area == 0))
	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) \|\| (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 */