#include <linux/refcount.h>
#include <uapi/asm/debug.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_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 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;
+typedef struct debug_info {
+ struct debug_info *next;
+ struct debug_info *prev;
refcount_t ref_count;
- spinlock_t lock;
+ spinlock_t lock;
int level;
int nr_areas;
int pages_per_area;
int buf_size;
- int entry_size;
- debug_entry_t*** areas;
+ 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];
+ 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];
umode_t mode;
} debug_info_t;
-typedef int (debug_header_proc_t) (debug_info_t* id,
- struct debug_view* view,
+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,
+ 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);
+ 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);
-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;
+ 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;
/* 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_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_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);
+ int buf_size);
debug_info_t *debug_register_mode(const char *name, int pages, int nr_areas,
int buf_size, umode_t mode, uid_t uid,
gid_t gid);
-void debug_unregister(debug_info_t* id);
+void debug_unregister(debug_info_t *id);
-void debug_set_level(debug_info_t* id, int new_level);
+void debug_set_level(debug_info_t *id, int new_level);
void debug_set_critical(void);
void debug_stop_all(void);
-static inline bool debug_level_enabled(debug_info_t* id, int level)
+static inline bool debug_level_enabled(debug_info_t *id, int level)
{
return level <= id->level;
}
-static inline debug_entry_t*
-debug_event(debug_info_t* id, int level, void* data, int length)
+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);
+ 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)
+static inline debug_entry_t *debug_int_event(debug_info_t *id, int level,
+ unsigned int tag)
{
- unsigned int t=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));
+ 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)
+static inline debug_entry_t *debug_long_event(debug_info_t *id, int level,
+ unsigned long tag)
{
- unsigned long t=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));
+ 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)
+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));
+ return debug_event_common(id, level, txt, strlen(txt));
}
/*
debug_entry_t *__ret; \
debug_info_t *__id = _id; \
int __level = _level; \
+ \
if ((!__id) || (__level > __id->level)) \
__ret = NULL; \
else \
__ret; \
})
-static inline debug_entry_t*
-debug_exception(debug_info_t* id, int level, void* data, int length)
+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);
+ 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)
+static inline debug_entry_t *debug_int_exception(debug_info_t *id, int level,
+ unsigned int tag)
{
- unsigned int t=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));
+ 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)
+static inline debug_entry_t *debug_long_exception (debug_info_t *id, int level,
+ unsigned long tag)
{
- unsigned long t=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));
+ 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)
+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));
+ return debug_exception_common(id, level, txt, strlen(txt));
}
/*
debug_entry_t *__ret; \
debug_info_t *__id = _id; \
int __level = _level; \
+ \
if ((!__id) || (__level > __id->level)) \
__ret = NULL; \
else \
__ret; \
})
-int debug_register_view(debug_info_t* id, struct debug_view* view);
-int debug_unregister_view(debug_info_t* id, struct debug_view* view);
+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
+ - 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
#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 )
+#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 /* DEBUG_H */
+#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 /* DEBUG_H */
* Copyright IBM Corp. 1999, 2012
*
* Author(s): Michael Holzheu (holzheu@de.ibm.com),
- * Holger Smolinski (Holger.Smolinski@de.ibm.com)
+ * Holger Smolinski (Holger.Smolinski@de.ibm.com)
*
* Bugreports to: <Linux390@de.ibm.com>
*/
typedef struct file_private_info {
loff_t offset; /* offset of last read in file */
- int act_area; /* number of last formated area */
- int act_page; /* act page in given area */
- int act_entry; /* last formated entry (offset */
- /* relative to beginning of last */
- /* formated page) */
- size_t act_entry_offset; /* up to this offset we copied */
+ int act_area; /* number of last formated area */
+ int act_page; /* act page in given area */
+ int act_entry; /* last formated entry (offset */
+ /* relative to beginning of last */
+ /* formated page) */
+ size_t act_entry_offset; /* up to this offset we copied */
/* in last read the last formated */
/* entry to userland */
char temp_buf[2048]; /* buffer for output */
- debug_info_t *debug_info_org; /* original debug information */
+ debug_info_t *debug_info_org; /* original debug information */
debug_info_t *debug_info_snap; /* snapshot of debug information */
struct debug_view *view; /* used view of debug info */
} file_private_info_t;
-typedef struct
-{
+typedef struct {
char *string;
- /*
- * This assumes that all args are converted into longs
- * on L/390 this is the case for all types of parameter
- * except of floats, and long long (32 bit)
+ /*
+ * This assumes that all args are converted into longs
+ * on L/390 this is the case for all types of parameter
+ * except of floats, and long long (32 bit)
*
*/
long args[0];
} debug_sprintf_entry_t;
-
/* internal function prototyes */
static int debug_init(void);
static ssize_t debug_output(struct file *file, char __user *user_buf,
- size_t user_len, loff_t * offset);
+ size_t user_len, loff_t *offset);
static ssize_t debug_input(struct file *file, const char __user *user_buf,
- size_t user_len, loff_t * offset);
+ size_t user_len, loff_t *offset);
static int debug_open(struct inode *inode, struct file *file);
static int debug_close(struct inode *inode, struct file *file);
static debug_info_t *debug_info_create(const char *name, int pages_per_area,
- int nr_areas, int buf_size, umode_t mode);
+ int nr_areas, int buf_size, umode_t mode);
static void debug_info_get(debug_info_t *);
static void debug_info_put(debug_info_t *);
-static int debug_prolog_level_fn(debug_info_t * id,
- struct debug_view *view, char *out_buf);
-static int debug_input_level_fn(debug_info_t * id, struct debug_view *view,
- struct file *file, const char __user *user_buf,
- size_t user_buf_size, loff_t * offset);
-static int debug_prolog_pages_fn(debug_info_t * id,
- struct debug_view *view, char *out_buf);
-static int debug_input_pages_fn(debug_info_t * id, struct debug_view *view,
- struct file *file, const char __user *user_buf,
- size_t user_buf_size, loff_t * offset);
-static int debug_input_flush_fn(debug_info_t * id, struct debug_view *view,
- struct file *file, const char __user *user_buf,
- size_t user_buf_size, loff_t * offset);
-static int debug_hex_ascii_format_fn(debug_info_t * id, struct debug_view *view,
- char *out_buf, const char *in_buf);
-static int debug_raw_format_fn(debug_info_t * id,
- struct debug_view *view, char *out_buf,
- const char *in_buf);
-static int debug_raw_header_fn(debug_info_t * id, struct debug_view *view,
- int area, debug_entry_t * entry, char *out_buf);
-
-static int debug_sprintf_format_fn(debug_info_t * id, struct debug_view *view,
- char *out_buf, debug_sprintf_entry_t *curr_event);
+static int debug_prolog_level_fn(debug_info_t *id,
+ struct debug_view *view, char *out_buf);
+static int debug_input_level_fn(debug_info_t *id, struct debug_view *view,
+ struct file *file, const char __user *user_buf,
+ size_t user_buf_size, loff_t *offset);
+static int debug_prolog_pages_fn(debug_info_t *id,
+ struct debug_view *view, char *out_buf);
+static int debug_input_pages_fn(debug_info_t *id, struct debug_view *view,
+ struct file *file, const char __user *user_buf,
+ size_t user_buf_size, loff_t *offset);
+static int debug_input_flush_fn(debug_info_t *id, struct debug_view *view,
+ struct file *file, const char __user *user_buf,
+ size_t user_buf_size, loff_t *offset);
+static int debug_hex_ascii_format_fn(debug_info_t *id, struct debug_view *view,
+ char *out_buf, const char *in_buf);
+static int debug_raw_format_fn(debug_info_t *id,
+ struct debug_view *view, char *out_buf,
+ const char *in_buf);
+static int debug_raw_header_fn(debug_info_t *id, struct debug_view *view,
+ int area, debug_entry_t *entry, char *out_buf);
+
+static int debug_sprintf_format_fn(debug_info_t *id, struct debug_view *view,
+ char *out_buf, debug_sprintf_entry_t *curr_event);
/* globals */
};
static struct debug_view debug_flush_view = {
- "flush",
- NULL,
- NULL,
- NULL,
- &debug_input_flush_fn,
- NULL
+ "flush",
+ NULL,
+ NULL,
+ NULL,
+ &debug_input_flush_fn,
+ NULL
};
struct debug_view debug_sprintf_view = {
"sprintf",
NULL,
&debug_dflt_header_fn,
- (debug_format_proc_t*)&debug_sprintf_format_fn,
+ (debug_format_proc_t *)&debug_sprintf_format_fn,
NULL,
NULL
};
/* static globals */
-static debug_info_t *debug_area_first = NULL;
-static debug_info_t *debug_area_last = NULL;
+static debug_info_t *debug_area_first;
+static debug_info_t *debug_area_last;
static DEFINE_MUTEX(debug_mutex);
static int initialized;
static int debug_critical;
static const struct file_operations debug_file_ops = {
- .owner = THIS_MODULE,
- .read = debug_output,
- .write = debug_input,
- .open = debug_open,
+ .owner = THIS_MODULE,
+ .read = debug_output,
+ .write = debug_input,
+ .open = debug_open,
.release = debug_close,
.llseek = no_llseek,
};
* areas[areanumber][pagenumber][pageoffset]
*/
-static debug_entry_t***
-debug_areas_alloc(int pages_per_area, int nr_areas)
+static debug_entry_t ***debug_areas_alloc(int pages_per_area, int nr_areas)
{
- debug_entry_t*** areas;
- int i,j;
+ debug_entry_t ***areas;
+ int i, j;
- areas = kmalloc(nr_areas *
- sizeof(debug_entry_t**),
- GFP_KERNEL);
+ areas = kmalloc(nr_areas * sizeof(debug_entry_t **), GFP_KERNEL);
if (!areas)
goto fail_malloc_areas;
for (i = 0; i < nr_areas; i++) {
- areas[i] = kmalloc(pages_per_area *
- sizeof(debug_entry_t*),GFP_KERNEL);
- if (!areas[i]) {
+ areas[i] = kmalloc(pages_per_area * sizeof(debug_entry_t *), GFP_KERNEL);
+ if (!areas[i])
goto fail_malloc_areas2;
- }
- for(j = 0; j < pages_per_area; j++) {
+ for (j = 0; j < pages_per_area; j++) {
areas[i][j] = kzalloc(PAGE_SIZE, GFP_KERNEL);
- if(!areas[i][j]) {
- for(j--; j >=0 ; j--) {
+ if (!areas[i][j]) {
+ for (j--; j >= 0 ; j--)
kfree(areas[i][j]);
- }
kfree(areas[i]);
goto fail_malloc_areas2;
}
return areas;
fail_malloc_areas2:
- for(i--; i >= 0; i--){
- for(j=0; j < pages_per_area;j++){
+ for (i--; i >= 0; i--) {
+ for (j = 0; j < pages_per_area; j++)
kfree(areas[i][j]);
- }
kfree(areas[i]);
}
kfree(areas);
fail_malloc_areas:
return NULL;
-
}
-
/*
* debug_info_alloc
* - alloc new debug-info
*/
-
-static debug_info_t*
-debug_info_alloc(const char *name, int pages_per_area, int nr_areas,
- int buf_size, int level, int mode)
+static debug_info_t *debug_info_alloc(const char *name, int pages_per_area,
+ int nr_areas, int buf_size, int level,
+ int mode)
{
- debug_info_t* rc;
+ debug_info_t *rc;
/* alloc everything */
-
rc = kmalloc(sizeof(debug_info_t), GFP_KERNEL);
- if(!rc)
+ if (!rc)
goto fail_malloc_rc;
rc->active_entries = kcalloc(nr_areas, sizeof(int), GFP_KERNEL);
- if(!rc->active_entries)
+ if (!rc->active_entries)
goto fail_malloc_active_entries;
rc->active_pages = kcalloc(nr_areas, sizeof(int), GFP_KERNEL);
- if(!rc->active_pages)
+ if (!rc->active_pages)
goto fail_malloc_active_pages;
- if((mode == ALL_AREAS) && (pages_per_area != 0)){
+ if ((mode == ALL_AREAS) && (pages_per_area != 0)) {
rc->areas = debug_areas_alloc(pages_per_area, nr_areas);
- if(!rc->areas)
+ if (!rc->areas)
goto fail_malloc_areas;
} else {
rc->areas = NULL;
}
/* initialize members */
-
spin_lock_init(&rc->lock);
rc->pages_per_area = pages_per_area;
- rc->nr_areas = nr_areas;
+ rc->nr_areas = nr_areas;
rc->active_area = 0;
- rc->level = level;
- rc->buf_size = buf_size;
- rc->entry_size = sizeof(debug_entry_t) + buf_size;
+ rc->level = level;
+ rc->buf_size = buf_size;
+ rc->entry_size = sizeof(debug_entry_t) + buf_size;
strlcpy(rc->name, name, sizeof(rc->name));
memset(rc->views, 0, DEBUG_MAX_VIEWS * sizeof(struct debug_view *));
- memset(rc->debugfs_entries, 0 ,DEBUG_MAX_VIEWS *
- sizeof(struct dentry*));
+ memset(rc->debugfs_entries, 0, DEBUG_MAX_VIEWS * sizeof(struct dentry *));
refcount_set(&(rc->ref_count), 0);
return rc;
* debug_areas_free
* - free all debug areas
*/
-
-static void
-debug_areas_free(debug_info_t* db_info)
+static void debug_areas_free(debug_info_t *db_info)
{
- int i,j;
+ int i, j;
- if(!db_info->areas)
+ if (!db_info->areas)
return;
for (i = 0; i < db_info->nr_areas; i++) {
- for(j = 0; j < db_info->pages_per_area; j++) {
+ for (j = 0; j < db_info->pages_per_area; j++)
kfree(db_info->areas[i][j]);
- }
kfree(db_info->areas[i]);
}
kfree(db_info->areas);
* debug_info_free
* - free memory debug-info
*/
-
-static void
-debug_info_free(debug_info_t* db_info){
+static void debug_info_free(debug_info_t *db_info)
+{
debug_areas_free(db_info);
kfree(db_info->active_entries);
kfree(db_info->active_pages);
* - create new debug-info
*/
-static debug_info_t*
-debug_info_create(const char *name, int pages_per_area, int nr_areas,
- int buf_size, umode_t mode)
+static debug_info_t *debug_info_create(const char *name, int pages_per_area,
+ int nr_areas, int buf_size, umode_t mode)
{
- debug_info_t* rc;
+ debug_info_t *rc;
- rc = debug_info_alloc(name, pages_per_area, nr_areas, buf_size,
- DEBUG_DEFAULT_LEVEL, ALL_AREAS);
- if(!rc)
+ rc = debug_info_alloc(name, pages_per_area, nr_areas, buf_size,
+ DEBUG_DEFAULT_LEVEL, ALL_AREAS);
+ if (!rc)
goto out;
rc->mode = mode & ~S_IFMT;
/* create root directory */
- rc->debugfs_root_entry = debugfs_create_dir(rc->name,
- debug_debugfs_root_entry);
+ rc->debugfs_root_entry = debugfs_create_dir(rc->name,
+ debug_debugfs_root_entry);
/* append new element to linked list */
- if (!debug_area_first) {
- /* first element in list */
- debug_area_first = rc;
- rc->prev = NULL;
- } else {
- /* append element to end of list */
- debug_area_last->next = rc;
- rc->prev = debug_area_last;
- }
- debug_area_last = rc;
- rc->next = NULL;
+ if (!debug_area_first) {
+ /* first element in list */
+ debug_area_first = rc;
+ rc->prev = NULL;
+ } else {
+ /* append element to end of list */
+ debug_area_last->next = rc;
+ rc->prev = debug_area_last;
+ }
+ debug_area_last = rc;
+ rc->next = NULL;
refcount_set(&rc->ref_count, 1);
out:
* debug_info_copy
* - copy debug-info
*/
-
-static debug_info_t*
-debug_info_copy(debug_info_t* in, int mode)
+static debug_info_t *debug_info_copy(debug_info_t *in, int mode)
{
- int i,j;
- debug_info_t* rc;
- unsigned long flags;
+ unsigned long flags;
+ debug_info_t *rc;
+ int i, j;
/* get a consistent copy of the debug areas */
do {
rc = debug_info_alloc(in->name, in->pages_per_area,
in->nr_areas, in->buf_size, in->level, mode);
spin_lock_irqsave(&in->lock, flags);
- if(!rc)
+ if (!rc)
goto out;
/* has something changed in the meantime ? */
- if((rc->pages_per_area == in->pages_per_area) &&
- (rc->nr_areas == in->nr_areas)) {
+ if ((rc->pages_per_area == in->pages_per_area) &&
+ (rc->nr_areas == in->nr_areas)) {
break;
}
spin_unlock_irqrestore(&in->lock, flags);
} while (1);
if (mode == NO_AREAS)
- goto out;
+ goto out;
- for(i = 0; i < in->nr_areas; i++){
- for(j = 0; j < in->pages_per_area; j++) {
- memcpy(rc->areas[i][j], in->areas[i][j],PAGE_SIZE);
- }
- }
+ for (i = 0; i < in->nr_areas; i++) {
+ for (j = 0; j < in->pages_per_area; j++)
+ memcpy(rc->areas[i][j], in->areas[i][j], PAGE_SIZE);
+ }
out:
- spin_unlock_irqrestore(&in->lock, flags);
- return rc;
+ spin_unlock_irqrestore(&in->lock, flags);
+ return rc;
}
/*
* debug_info_get
* - increments reference count for debug-info
*/
-
-static void
-debug_info_get(debug_info_t * db_info)
+static void debug_info_get(debug_info_t *db_info)
{
if (db_info)
refcount_inc(&db_info->ref_count);
* debug_info_put:
* - decreases reference count for debug-info and frees it if necessary
*/
-
-static void
-debug_info_put(debug_info_t *db_info)
+static void debug_info_put(debug_info_t *db_info)
{
int i;
debugfs_remove(db_info->debugfs_entries[i]);
}
debugfs_remove(db_info->debugfs_root_entry);
- if(db_info == debug_area_first)
+ if (db_info == debug_area_first)
debug_area_first = db_info->next;
- if(db_info == debug_area_last)
+ if (db_info == debug_area_last)
debug_area_last = db_info->prev;
- if(db_info->prev) db_info->prev->next = db_info->next;
- if(db_info->next) db_info->next->prev = db_info->prev;
+ if (db_info->prev)
+ db_info->prev->next = db_info->next;
+ if (db_info->next)
+ db_info->next->prev = db_info->prev;
debug_info_free(db_info);
}
}
* debug_format_entry:
* - format one debug entry and return size of formated data
*/
-
-static int
-debug_format_entry(file_private_info_t *p_info)
+static int debug_format_entry(file_private_info_t *p_info)
{
- debug_info_t *id_snap = p_info->debug_info_snap;
+ debug_info_t *id_snap = p_info->debug_info_snap;
struct debug_view *view = p_info->view;
debug_entry_t *act_entry;
size_t len = 0;
- if(p_info->act_entry == DEBUG_PROLOG_ENTRY){
+
+ if (p_info->act_entry == DEBUG_PROLOG_ENTRY) {
/* print prolog */
- if (view->prolog_proc)
- len += view->prolog_proc(id_snap,view,p_info->temp_buf);
+ if (view->prolog_proc)
+ len += view->prolog_proc(id_snap, view, p_info->temp_buf);
goto out;
}
if (!id_snap->areas) /* this is true, if we have a prolog only view */
goto out; /* or if 'pages_per_area' is 0 */
- act_entry = (debug_entry_t *) ((char*)id_snap->areas[p_info->act_area]
- [p_info->act_page] + p_info->act_entry);
-
+ act_entry = (debug_entry_t *) ((char *)id_snap->areas[p_info->act_area]
+ [p_info->act_page] + p_info->act_entry);
+
if (act_entry->id.stck == 0LL)
- goto out; /* empty entry */
+ goto out; /* empty entry */
if (view->header_proc)
len += view->header_proc(id_snap, view, p_info->act_area,
- act_entry, p_info->temp_buf + len);
+ act_entry, p_info->temp_buf + len);
if (view->format_proc)
len += view->format_proc(id_snap, view, p_info->temp_buf + len,
- DEBUG_DATA(act_entry));
+ DEBUG_DATA(act_entry));
out:
- return len;
+ return len;
}
/*
* debug_next_entry:
* - goto next entry in p_info
*/
-
-static inline int
-debug_next_entry(file_private_info_t *p_info)
+static inline int debug_next_entry(file_private_info_t *p_info)
{
debug_info_t *id;
id = p_info->debug_info_snap;
- if(p_info->act_entry == DEBUG_PROLOG_ENTRY){
+ if (p_info->act_entry == DEBUG_PROLOG_ENTRY) {
p_info->act_entry = 0;
p_info->act_page = 0;
goto out;
}
- if(!id->areas)
+ if (!id->areas)
return 1;
p_info->act_entry += id->entry_size;
/* switch to next page, if we reached the end of the page */
- if (p_info->act_entry > (PAGE_SIZE - id->entry_size)){
+ if (p_info->act_entry > (PAGE_SIZE - id->entry_size)) {
/* next page */
p_info->act_entry = 0;
p_info->act_page += 1;
- if((p_info->act_page % id->pages_per_area) == 0) {
+ if ((p_info->act_page % id->pages_per_area) == 0) {
/* next area */
- p_info->act_area++;
- p_info->act_page=0;
+ p_info->act_area++;
+ p_info->act_page = 0;
}
- if(p_info->act_area >= id->nr_areas)
+ if (p_info->act_area >= id->nr_areas)
return 1;
}
out:
- return 0;
+ return 0;
}
/*
* - called for user read()
* - copies formated debug entries to the user buffer
*/
-
-static ssize_t
-debug_output(struct file *file, /* file descriptor */
- char __user *user_buf, /* user buffer */
- size_t len, /* length of buffer */
- loff_t *offset) /* offset in the file */
+static ssize_t debug_output(struct file *file, /* file descriptor */
+ char __user *user_buf, /* user buffer */
+ size_t len, /* length of buffer */
+ loff_t *offset) /* offset in the file */
{
size_t count = 0;
size_t entry_offset;
file_private_info_t *p_info;
- p_info = ((file_private_info_t *) file->private_data);
- if (*offset != p_info->offset)
+ p_info = (file_private_info_t *) file->private_data;
+ if (*offset != p_info->offset)
return -EPIPE;
- if(p_info->act_area >= p_info->debug_info_snap->nr_areas)
+ if (p_info->act_area >= p_info->debug_info_snap->nr_areas)
return 0;
entry_offset = p_info->act_entry_offset;
- while(count < len){
- int formatted_line_size;
+ while (count < len) {
int formatted_line_residue;
+ int formatted_line_size;
int user_buf_residue;
size_t copy_size;
formatted_line_residue = formatted_line_size - entry_offset;
user_buf_residue = len-count;
copy_size = min(user_buf_residue, formatted_line_residue);
- if(copy_size){
+ if (copy_size) {
if (copy_to_user(user_buf + count, p_info->temp_buf
- + entry_offset, copy_size))
+ + entry_offset, copy_size))
return -EFAULT;
count += copy_size;
entry_offset += copy_size;
}
- if(copy_size == formatted_line_residue){
+ if (copy_size == formatted_line_residue) {
entry_offset = 0;
- if(debug_next_entry(p_info))
+ if (debug_next_entry(p_info))
goto out;
}
}
out:
- p_info->offset = *offset + count;
+ p_info->offset = *offset + count;
p_info->act_entry_offset = entry_offset;
*offset = p_info->offset;
return count;
* - called for user write()
* - calls input function of view
*/
-
-static ssize_t
-debug_input(struct file *file, const char __user *user_buf, size_t length,
- loff_t *offset)
+static ssize_t debug_input(struct file *file, const char __user *user_buf,
+ size_t length, loff_t *offset)
{
- int rc = 0;
file_private_info_t *p_info;
+ int rc = 0;
mutex_lock(&debug_mutex);
p_info = ((file_private_info_t *) file->private_data);
- if (p_info->view->input_proc)
+ if (p_info->view->input_proc) {
rc = p_info->view->input_proc(p_info->debug_info_org,
p_info->view, file, user_buf,
length, offset);
- else
+ } else {
rc = -EPERM;
+ }
mutex_unlock(&debug_mutex);
- return rc; /* number of input characters */
+ return rc; /* number of input characters */
}
/*
* - copies formated output to private_data area of the file
* handle
*/
-
-static int
-debug_open(struct inode *inode, struct file *file)
+static int debug_open(struct inode *inode, struct file *file)
{
- int i, rc = 0;
- file_private_info_t *p_info;
debug_info_t *debug_info, *debug_info_snapshot;
+ file_private_info_t *p_info;
+ int i, rc = 0;
mutex_lock(&debug_mutex);
debug_info = file_inode(file)->i_private;
for (i = 0; i < DEBUG_MAX_VIEWS; i++) {
if (!debug_info->views[i])
continue;
- else if (debug_info->debugfs_entries[i] ==
- file->f_path.dentry) {
- goto found; /* found view ! */
- }
+ else if (debug_info->debugfs_entries[i] == file->f_path.dentry)
+ goto found; /* found view ! */
}
/* no entry found */
rc = -EINVAL;
found:
- /* Make snapshot of current debug areas to get it consistent. */
+ /* Make snapshot of current debug areas to get it consistent. */
/* To copy all the areas is only needed, if we have a view which */
/* formats the debug areas. */
- if(!debug_info->views[i]->format_proc &&
- !debug_info->views[i]->header_proc){
+ if (!debug_info->views[i]->format_proc && !debug_info->views[i]->header_proc)
debug_info_snapshot = debug_info_copy(debug_info, NO_AREAS);
- } else {
+ else
debug_info_snapshot = debug_info_copy(debug_info, ALL_AREAS);
- }
- if(!debug_info_snapshot){
+ if (!debug_info_snapshot) {
rc = -ENOMEM;
goto out;
}
- p_info = kmalloc(sizeof(file_private_info_t),
- GFP_KERNEL);
- if(!p_info){
+ p_info = kmalloc(sizeof(file_private_info_t), GFP_KERNEL);
+ if (!p_info) {
debug_info_free(debug_info_snapshot);
rc = -ENOMEM;
goto out;
}
p_info->offset = 0;
p_info->debug_info_snap = debug_info_snapshot;
- p_info->debug_info_org = debug_info;
+ p_info->debug_info_org = debug_info;
p_info->view = debug_info->views[i];
p_info->act_area = 0;
p_info->act_page = 0;
* - called for user close()
* - deletes private_data area of the file handle
*/
-
-static int
-debug_close(struct inode *inode, struct file *file)
+static int debug_close(struct inode *inode, struct file *file)
{
file_private_info_t *p_info;
+
p_info = (file_private_info_t *) file->private_data;
- if(p_info->debug_info_snap)
+ if (p_info->debug_info_snap)
debug_info_free(p_info->debug_info_snap);
debug_info_put(p_info->debug_info_org);
kfree(file->private_data);
- return 0; /* success */
+ return 0; /* success */
}
/*
* The mode parameter allows to specify access rights for the s390dbf files
* - Returns handle for debug area
*/
-
debug_info_t *debug_register_mode(const char *name, int pages_per_area,
int nr_areas, int buf_size, umode_t mode,
uid_t uid, gid_t gid)
BUG_ON(!initialized);
mutex_lock(&debug_mutex);
- /* create new debug_info */
-
+ /* create new debug_info */
rc = debug_info_create(name, pages_per_area, nr_areas, buf_size, mode);
- if(!rc)
+ if (!rc)
goto out;
debug_register_view(rc, &debug_level_view);
- debug_register_view(rc, &debug_flush_view);
+ debug_register_view(rc, &debug_flush_view);
debug_register_view(rc, &debug_pages_view);
out:
- if (!rc){
+ if (!rc)
pr_err("Registering debug feature %s failed\n", name);
- }
mutex_unlock(&debug_mutex);
return rc;
}
* - creates and initializes debug area for the caller
* - returns handle for debug area
*/
-
debug_info_t *debug_register(const char *name, int pages_per_area,
int nr_areas, int buf_size)
{
* debug_unregister:
* - give back debug area
*/
-
-void
-debug_unregister(debug_info_t * id)
+void debug_unregister(debug_info_t *id)
{
if (!id)
- goto out;
+ return;
mutex_lock(&debug_mutex);
debug_info_put(id);
mutex_unlock(&debug_mutex);
-
-out:
- return;
}
EXPORT_SYMBOL(debug_unregister);
* debug_set_size:
* - set area size (number of pages) and number of areas
*/
-static int
-debug_set_size(debug_info_t* id, int nr_areas, int pages_per_area)
+static int debug_set_size(debug_info_t *id, int nr_areas, int pages_per_area)
{
+ debug_entry_t ***new_areas;
unsigned long flags;
- debug_entry_t *** new_areas;
- int rc=0;
+ int rc = 0;
- if(!id || (nr_areas <= 0) || (pages_per_area < 0))
+ if (!id || (nr_areas <= 0) || (pages_per_area < 0))
return -EINVAL;
- if(pages_per_area > 0){
+ if (pages_per_area > 0) {
new_areas = debug_areas_alloc(pages_per_area, nr_areas);
- if(!new_areas) {
+ if (!new_areas) {
pr_info("Allocating memory for %i pages failed\n",
pages_per_area);
rc = -ENOMEM;
} else {
new_areas = NULL;
}
- spin_lock_irqsave(&id->lock,flags);
+ spin_lock_irqsave(&id->lock, flags);
debug_areas_free(id);
id->areas = new_areas;
id->nr_areas = nr_areas;
id->pages_per_area = pages_per_area;
id->active_area = 0;
- memset(id->active_entries,0,sizeof(int)*id->nr_areas);
+ memset(id->active_entries, 0, sizeof(int)*id->nr_areas);
memset(id->active_pages, 0, sizeof(int)*id->nr_areas);
- spin_unlock_irqrestore(&id->lock,flags);
- pr_info("%s: set new size (%i pages)\n" ,id->name, pages_per_area);
+ spin_unlock_irqrestore(&id->lock, flags);
+ pr_info("%s: set new size (%i pages)\n", id->name, pages_per_area);
out:
return rc;
}
* debug_set_level:
* - set actual debug level
*/
-
-void
-debug_set_level(debug_info_t* id, int new_level)
+void debug_set_level(debug_info_t *id, int new_level)
{
unsigned long flags;
- if(!id)
- return;
- spin_lock_irqsave(&id->lock,flags);
- if(new_level == DEBUG_OFF_LEVEL){
- id->level = DEBUG_OFF_LEVEL;
- pr_info("%s: switched off\n",id->name);
- } else if ((new_level > DEBUG_MAX_LEVEL) || (new_level < 0)) {
+
+ if (!id)
+ return;
+ spin_lock_irqsave(&id->lock, flags);
+ if (new_level == DEBUG_OFF_LEVEL) {
+ id->level = DEBUG_OFF_LEVEL;
+ pr_info("%s: switched off\n", id->name);
+ } else if ((new_level > DEBUG_MAX_LEVEL) || (new_level < 0)) {
pr_info("%s: level %i is out of range (%i - %i)\n",
- id->name, new_level, 0, DEBUG_MAX_LEVEL);
- } else {
- id->level = new_level;
- }
- spin_unlock_irqrestore(&id->lock,flags);
+ id->name, new_level, 0, DEBUG_MAX_LEVEL);
+ } else {
+ id->level = new_level;
+ }
+ spin_unlock_irqrestore(&id->lock, flags);
}
EXPORT_SYMBOL(debug_set_level);
* proceed_active_entry:
* - set active entry to next in the ring buffer
*/
-
-static inline void
-proceed_active_entry(debug_info_t * id)
+static inline void proceed_active_entry(debug_info_t *id)
{
if ((id->active_entries[id->active_area] += id->entry_size)
- > (PAGE_SIZE - id->entry_size)){
+ > (PAGE_SIZE - id->entry_size)) {
id->active_entries[id->active_area] = 0;
id->active_pages[id->active_area] =
(id->active_pages[id->active_area] + 1) %
* proceed_active_area:
* - set active area to next in the ring buffer
*/
-
-static inline void
-proceed_active_area(debug_info_t * id)
+static inline void proceed_active_area(debug_info_t *id)
{
id->active_area++;
id->active_area = id->active_area % id->nr_areas;
/*
* get_active_entry:
*/
-
-static inline debug_entry_t*
-get_active_entry(debug_info_t * id)
+static inline debug_entry_t *get_active_entry(debug_info_t *id)
{
return (debug_entry_t *) (((char *) id->areas[id->active_area]
- [id->active_pages[id->active_area]]) +
- id->active_entries[id->active_area]);
+ [id->active_pages[id->active_area]]) +
+ id->active_entries[id->active_area]);
}
/*
* - set timestamp, caller address, cpu number etc.
*/
-static inline void
-debug_finish_entry(debug_info_t * id, debug_entry_t* active, int level,
- int exception)
+static inline void debug_finish_entry(debug_info_t *id, debug_entry_t *active,
+ int level, int exception)
{
active->id.stck = get_tod_clock_fast() -
*(unsigned long long *) &tod_clock_base[1];
active->id.fields.cpuid = smp_processor_id();
active->caller = __builtin_return_address(0);
active->id.fields.exception = exception;
- active->id.fields.level = level;
+ active->id.fields.level = level;
proceed_active_entry(id);
- if(exception)
+ if (exception)
proceed_active_area(id);
}
-static int debug_stoppable=1;
-static int debug_active=1;
+static int debug_stoppable = 1;
+static int debug_active = 1;
#define CTL_S390DBF_STOPPABLE 5678
#define CTL_S390DBF_ACTIVE 5679
* always allow read, allow write only if debug_stoppable is set or
* if debug_active is already off
*/
-static int
-s390dbf_procactive(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static int s390dbf_procactive(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
if (!write || debug_stoppable || !debug_active)
return proc_dointvec(table, write, buffer, lenp, ppos);
return 0;
}
-
static struct ctl_table s390dbf_table[] = {
{
- .procname = "debug_stoppable",
+ .procname = "debug_stoppable",
.data = &debug_stoppable,
.maxlen = sizeof(int),
- .mode = S_IRUGO | S_IWUSR,
- .proc_handler = proc_dointvec,
+ .mode = S_IRUGO | S_IWUSR,
+ .proc_handler = proc_dointvec,
},
- {
- .procname = "debug_active",
+ {
+ .procname = "debug_active",
.data = &debug_active,
.maxlen = sizeof(int),
- .mode = S_IRUGO | S_IWUSR,
- .proc_handler = s390dbf_procactive,
+ .mode = S_IRUGO | S_IWUSR,
+ .proc_handler = s390dbf_procactive,
},
{ }
};
static struct ctl_table s390dbf_dir_table[] = {
{
- .procname = "s390dbf",
- .maxlen = 0,
- .mode = S_IRUGO | S_IXUGO,
- .child = s390dbf_table,
+ .procname = "s390dbf",
+ .maxlen = 0,
+ .mode = S_IRUGO | S_IXUGO,
+ .child = s390dbf_table,
},
{ }
};
static struct ctl_table_header *s390dbf_sysctl_header;
-void
-debug_stop_all(void)
+void debug_stop_all(void)
{
if (debug_stoppable)
debug_active = 0;
* debug_event_common:
* - write debug entry with given size
*/
-
-debug_entry_t*
-debug_event_common(debug_info_t * id, int level, const void *buf, int len)
+debug_entry_t *debug_event_common(debug_info_t *id, int level, const void *buf,
+ int len)
{
- unsigned long flags;
debug_entry_t *active;
+ unsigned long flags;
if (!debug_active || !id->areas)
return NULL;
if (debug_critical) {
if (!spin_trylock_irqsave(&id->lock, flags))
return NULL;
- } else
+ } else {
spin_lock_irqsave(&id->lock, flags);
+ }
active = get_active_entry(id);
memset(DEBUG_DATA(active), 0, id->buf_size);
memcpy(DEBUG_DATA(active), buf, min(len, id->buf_size));
* debug_exception_common:
* - write debug entry with given size and switch to next debug area
*/
-
-debug_entry_t
-*debug_exception_common(debug_info_t * id, int level, const void *buf, int len)
+debug_entry_t *debug_exception_common(debug_info_t *id, int level,
+ const void *buf, int len)
{
- unsigned long flags;
debug_entry_t *active;
+ unsigned long flags;
if (!debug_active || !id->areas)
return NULL;
if (debug_critical) {
if (!spin_trylock_irqsave(&id->lock, flags))
return NULL;
- } else
+ } else {
spin_lock_irqsave(&id->lock, flags);
+ }
active = get_active_entry(id);
memset(DEBUG_DATA(active), 0, id->buf_size);
memcpy(DEBUG_DATA(active), buf, min(len, id->buf_size));
/*
* counts arguments in format string for sprintf view
*/
-
-static inline int
-debug_count_numargs(char *string)
+static inline int debug_count_numargs(char *string)
{
- int numargs=0;
+ int numargs = 0;
- while(*string) {
- if(*string++=='%')
+ while (*string) {
+ if (*string++ == '%')
numargs++;
}
- return(numargs);
+ return numargs;
}
/*
* debug_sprintf_event:
*/
-
-debug_entry_t*
-__debug_sprintf_event(debug_info_t *id, int level, char *string, ...)
+debug_entry_t *__debug_sprintf_event(debug_info_t *id, int level, char *string, ...)
{
- va_list ap;
- int numargs,idx;
- unsigned long flags;
debug_sprintf_entry_t *curr_event;
debug_entry_t *active;
+ unsigned long flags;
+ int numargs, idx;
+ va_list ap;
if (!debug_active || !id->areas)
return NULL;
- numargs=debug_count_numargs(string);
+ numargs = debug_count_numargs(string);
if (debug_critical) {
if (!spin_trylock_irqsave(&id->lock, flags))
return NULL;
- } else
+ } else {
spin_lock_irqsave(&id->lock, flags);
+ }
active = get_active_entry(id);
- curr_event=(debug_sprintf_entry_t *) DEBUG_DATA(active);
- va_start(ap,string);
- curr_event->string=string;
- for(idx=0;idx<min(numargs,(int)(id->buf_size / sizeof(long))-1);idx++)
- curr_event->args[idx]=va_arg(ap,long);
+ curr_event = (debug_sprintf_entry_t *) DEBUG_DATA(active);
+ va_start(ap, string);
+ curr_event->string = string;
+ for (idx = 0; idx < min(numargs, (int)(id->buf_size / sizeof(long)) - 1); idx++)
+ curr_event->args[idx] = va_arg(ap, long);
va_end(ap);
debug_finish_entry(id, active, level, 0);
spin_unlock_irqrestore(&id->lock, flags);
/*
* debug_sprintf_exception:
*/
-
-debug_entry_t*
-__debug_sprintf_exception(debug_info_t *id, int level, char *string, ...)
+debug_entry_t *__debug_sprintf_exception(debug_info_t *id, int level, char *string, ...)
{
- va_list ap;
- int numargs,idx;
- unsigned long flags;
debug_sprintf_entry_t *curr_event;
debug_entry_t *active;
+ unsigned long flags;
+ int numargs, idx;
+ va_list ap;
if (!debug_active || !id->areas)
return NULL;
- numargs=debug_count_numargs(string);
+ numargs = debug_count_numargs(string);
if (debug_critical) {
if (!spin_trylock_irqsave(&id->lock, flags))
return NULL;
- } else
+ } else {
spin_lock_irqsave(&id->lock, flags);
+ }
active = get_active_entry(id);
- curr_event=(debug_sprintf_entry_t *)DEBUG_DATA(active);
- va_start(ap,string);
- curr_event->string=string;
- for(idx=0;idx<min(numargs,(int)(id->buf_size / sizeof(long))-1);idx++)
- curr_event->args[idx]=va_arg(ap,long);
+ curr_event = (debug_sprintf_entry_t *)DEBUG_DATA(active);
+ va_start(ap, string);
+ curr_event->string = string;
+ for (idx = 0; idx < min(numargs, (int)(id->buf_size / sizeof(long)) - 1); idx++)
+ curr_event->args[idx] = va_arg(ap, long);
va_end(ap);
debug_finish_entry(id, active, level, 1);
spin_unlock_irqrestore(&id->lock, flags);
/*
* debug_register_view:
*/
-
-int
-debug_register_view(debug_info_t * id, struct debug_view *view)
+int debug_register_view(debug_info_t *id, struct debug_view *view)
{
- int rc = 0;
- int i;
unsigned long flags;
- umode_t mode;
struct dentry *pde;
+ umode_t mode;
+ int rc = 0;
+ int i;
if (!id)
goto out;
if (!view->input_proc)
mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
pde = debugfs_create_file(view->name, mode, id->debugfs_root_entry,
- id , &debug_file_ops);
- if (!pde){
+ id, &debug_file_ops);
+ if (!pde) {
pr_err("Registering view %s/%s failed due to out of "
- "memory\n", id->name,view->name);
+ "memory\n", id->name, view->name);
rc = -1;
goto out;
}
/*
* debug_unregister_view:
*/
-
-int
-debug_unregister_view(debug_info_t * id, struct debug_view *view)
+int debug_unregister_view(debug_info_t *id, struct debug_view *view)
{
struct dentry *dentry = NULL;
unsigned long flags;
if (id->views[i] == view)
break;
}
- if (i == DEBUG_MAX_VIEWS)
+ if (i == DEBUG_MAX_VIEWS) {
rc = -1;
- else {
+ } else {
dentry = id->debugfs_entries[i];
id->views[i] = NULL;
id->debugfs_entries[i] = NULL;
}
EXPORT_SYMBOL(debug_unregister_view);
-static inline char *
-debug_get_user_string(const char __user *user_buf, size_t user_len)
+static inline char *debug_get_user_string(const char __user *user_buf,
+ size_t user_len)
{
- char* buffer;
+ char *buffer;
buffer = kmalloc(user_len + 1, GFP_KERNEL);
if (!buffer)
buffer[user_len - 1] = 0;
else
buffer[user_len] = 0;
- return buffer;
+ return buffer;
}
-static inline int
-debug_get_uint(char *buf)
+static inline int debug_get_uint(char *buf)
{
int rc;
buf = skip_spaces(buf);
rc = simple_strtoul(buf, &buf, 10);
- if(*buf){
+ if (*buf)
rc = -EINVAL;
- }
return rc;
}
* prints out actual debug level
*/
-static int
-debug_prolog_pages_fn(debug_info_t * id,
- struct debug_view *view, char *out_buf)
+static int debug_prolog_pages_fn(debug_info_t *id, struct debug_view *view,
+ char *out_buf)
{
return sprintf(out_buf, "%i\n", id->pages_per_area);
}
* reads new size (number of pages per debug area)
*/
-static int
-debug_input_pages_fn(debug_info_t * id, struct debug_view *view,
- struct file *file, const char __user *user_buf,
- size_t user_len, loff_t * offset)
+static int debug_input_pages_fn(debug_info_t *id, struct debug_view *view,
+ struct file *file, const char __user *user_buf,
+ size_t user_len, loff_t *offset)
{
+ int rc, new_pages;
char *str;
- int rc,new_pages;
if (user_len > 0x10000)
- user_len = 0x10000;
- if (*offset != 0){
+ user_len = 0x10000;
+ if (*offset != 0) {
rc = -EPIPE;
goto out;
}
- str = debug_get_user_string(user_buf,user_len);
- if(IS_ERR(str)){
+ str = debug_get_user_string(user_buf, user_len);
+ if (IS_ERR(str)) {
rc = PTR_ERR(str);
goto out;
}
new_pages = debug_get_uint(str);
- if(new_pages < 0){
+ if (new_pages < 0) {
rc = -EINVAL;
goto free_str;
}
- rc = debug_set_size(id,id->nr_areas, new_pages);
- if(rc != 0){
+ rc = debug_set_size(id, id->nr_areas, new_pages);
+ if (rc != 0) {
rc = -EINVAL;
goto free_str;
}
/*
* prints out actual debug level
*/
-
-static int
-debug_prolog_level_fn(debug_info_t * id, struct debug_view *view, char *out_buf)
+static int debug_prolog_level_fn(debug_info_t *id, struct debug_view *view,
+ char *out_buf)
{
int rc = 0;
- if(id->level == DEBUG_OFF_LEVEL) {
- rc = sprintf(out_buf,"-\n");
- }
- else {
+ if (id->level == DEBUG_OFF_LEVEL)
+ rc = sprintf(out_buf, "-\n");
+ else
rc = sprintf(out_buf, "%i\n", id->level);
- }
return rc;
}
/*
* reads new debug level
*/
-
-static int
-debug_input_level_fn(debug_info_t * id, struct debug_view *view,
- struct file *file, const char __user *user_buf,
- size_t user_len, loff_t * offset)
+static int debug_input_level_fn(debug_info_t *id, struct debug_view *view,
+ struct file *file, const char __user *user_buf,
+ size_t user_len, loff_t *offset)
{
+ int rc, new_level;
char *str;
- int rc,new_level;
if (user_len > 0x10000)
- user_len = 0x10000;
- if (*offset != 0){
+ user_len = 0x10000;
+ if (*offset != 0) {
rc = -EPIPE;
goto out;
}
- str = debug_get_user_string(user_buf,user_len);
- if(IS_ERR(str)){
+ str = debug_get_user_string(user_buf, user_len);
+ if (IS_ERR(str)) {
rc = PTR_ERR(str);
goto out;
}
- if(str[0] == '-'){
+ if (str[0] == '-') {
debug_set_level(id, DEBUG_OFF_LEVEL);
rc = user_len;
goto free_str;
} else {
new_level = debug_get_uint(str);
}
- if(new_level < 0) {
+ if (new_level < 0) {
pr_warn("%s is not a valid level for a debug feature\n", str);
rc = -EINVAL;
} else {
return rc; /* number of input characters */
}
-
/*
* flushes debug areas
*/
-
-static void debug_flush(debug_info_t* id, int area)
+static void debug_flush(debug_info_t *id, int area)
{
- unsigned long flags;
- int i,j;
-
- if(!id || !id->areas)
- return;
- spin_lock_irqsave(&id->lock,flags);
- if(area == DEBUG_FLUSH_ALL){
- id->active_area = 0;
- memset(id->active_entries, 0, id->nr_areas * sizeof(int));
- for (i = 0; i < id->nr_areas; i++) {
+ unsigned long flags;
+ int i, j;
+
+ if (!id || !id->areas)
+ return;
+ spin_lock_irqsave(&id->lock, flags);
+ if (area == DEBUG_FLUSH_ALL) {
+ id->active_area = 0;
+ memset(id->active_entries, 0, id->nr_areas * sizeof(int));
+ for (i = 0; i < id->nr_areas; i++) {
id->active_pages[i] = 0;
- for(j = 0; j < id->pages_per_area; j++) {
- memset(id->areas[i][j], 0, PAGE_SIZE);
- }
+ for (j = 0; j < id->pages_per_area; j++)
+ memset(id->areas[i][j], 0, PAGE_SIZE);
}
- } else if(area >= 0 && area < id->nr_areas) {
- id->active_entries[area] = 0;
+ } else if (area >= 0 && area < id->nr_areas) {
+ id->active_entries[area] = 0;
id->active_pages[area] = 0;
- for(i = 0; i < id->pages_per_area; i++) {
- memset(id->areas[area][i],0,PAGE_SIZE);
- }
- }
- spin_unlock_irqrestore(&id->lock,flags);
+ for (i = 0; i < id->pages_per_area; i++)
+ memset(id->areas[area][i], 0, PAGE_SIZE);
+ }
+ spin_unlock_irqrestore(&id->lock, flags);
}
/*
- * view function: flushes debug areas
+ * view function: flushes debug areas
*/
-
-static int
-debug_input_flush_fn(debug_info_t * id, struct debug_view *view,
- struct file *file, const char __user *user_buf,
- size_t user_len, loff_t * offset)
+static int debug_input_flush_fn(debug_info_t *id, struct debug_view *view,
+ struct file *file, const char __user *user_buf,
+ size_t user_len, loff_t *offset)
{
- char input_buf[1];
- int rc = user_len;
+ char input_buf[1];
+ int rc = user_len;
if (user_len > 0x10000)
- user_len = 0x10000;
- if (*offset != 0){
+ user_len = 0x10000;
+ if (*offset != 0) {
rc = -EPIPE;
- goto out;
+ goto out;
+ }
+ if (copy_from_user(input_buf, user_buf, 1)) {
+ rc = -EFAULT;
+ goto out;
+ }
+ if (input_buf[0] == '-') {
+ debug_flush(id, DEBUG_FLUSH_ALL);
+ goto out;
+ }
+ if (isdigit(input_buf[0])) {
+ int area = ((int) input_buf[0] - (int) '0');
+
+ debug_flush(id, area);
+ goto out;
}
- if (copy_from_user(input_buf, user_buf, 1)){
- rc = -EFAULT;
- goto out;
- }
- if(input_buf[0] == '-') {
- debug_flush(id, DEBUG_FLUSH_ALL);
- goto out;
- }
- if (isdigit(input_buf[0])) {
- int area = ((int) input_buf[0] - (int) '0');
- debug_flush(id, area);
- goto out;
- }
pr_info("Flushing debug data failed because %c is not a valid "
"area\n", input_buf[0]);
out:
- *offset += user_len;
- return rc; /* number of input characters */
+ *offset += user_len;
+ return rc; /* number of input characters */
}
/*
* prints debug header in raw format
*/
-
-static int
-debug_raw_header_fn(debug_info_t * id, struct debug_view *view,
- int area, debug_entry_t * entry, char *out_buf)
+static int debug_raw_header_fn(debug_info_t *id, struct debug_view *view,
+ int area, debug_entry_t *entry, char *out_buf)
{
- int rc;
+ int rc;
rc = sizeof(debug_entry_t);
- memcpy(out_buf,entry,sizeof(debug_entry_t));
- return rc;
+ memcpy(out_buf, entry, sizeof(debug_entry_t));
+ return rc;
}
/*
* prints debug data in raw format
*/
-
-static int
-debug_raw_format_fn(debug_info_t * id, struct debug_view *view,
+static int debug_raw_format_fn(debug_info_t *id, struct debug_view *view,
char *out_buf, const char *in_buf)
{
int rc;
/*
* prints debug data in hex/ascii format
*/
-
-static int
-debug_hex_ascii_format_fn(debug_info_t * id, struct debug_view *view,
- char *out_buf, const char *in_buf)
+static int debug_hex_ascii_format_fn(debug_info_t *id, struct debug_view *view,
+ char *out_buf, const char *in_buf)
{
int i, rc = 0;
- for (i = 0; i < id->buf_size; i++) {
- rc += sprintf(out_buf + rc, "%02x ",
- ((unsigned char *) in_buf)[i]);
- }
+ for (i = 0; i < id->buf_size; i++)
+ rc += sprintf(out_buf + rc, "%02x ", ((unsigned char *) in_buf)[i]);
rc += sprintf(out_buf + rc, "| ");
for (i = 0; i < id->buf_size; i++) {
unsigned char c = in_buf[i];
+
if (isascii(c) && isprint(c))
rc += sprintf(out_buf + rc, "%c", c);
else
/*
* prints header for debug entry
*/
-
-int
-debug_dflt_header_fn(debug_info_t * id, struct debug_view *view,
- int area, debug_entry_t * entry, char *out_buf)
+int debug_dflt_header_fn(debug_info_t *id, struct debug_view *view,
+ int area, debug_entry_t *entry, char *out_buf)
{
unsigned long base, sec, usec;
- char *except_str;
unsigned long caller;
- int rc = 0;
unsigned int level;
+ char *except_str;
+ int rc = 0;
level = entry->id.fields.level;
base = (*(unsigned long *) &tod_clock_base[0]) >> 4;
#define DEBUG_SPRINTF_MAX_ARGS 10
-static int
-debug_sprintf_format_fn(debug_info_t * id, struct debug_view *view,
- char *out_buf, debug_sprintf_entry_t *curr_event)
+static int debug_sprintf_format_fn(debug_info_t *id, struct debug_view *view,
+ char *out_buf, debug_sprintf_entry_t *curr_event)
{
- int num_longs, num_used_args = 0,i, rc = 0;
+ int num_longs, num_used_args = 0, i, rc = 0;
int index[DEBUG_SPRINTF_MAX_ARGS];
/* count of longs fit into one entry */
- num_longs = id->buf_size / sizeof(long);
+ num_longs = id->buf_size / sizeof(long);
- if(num_longs < 1)
+ if (num_longs < 1)
goto out; /* bufsize of entry too small */
- if(num_longs == 1) {
+ if (num_longs == 1) {
/* no args, we use only the string */
strcpy(out_buf, curr_event->string);
rc = strlen(curr_event->string);
}
/* number of arguments used for sprintf (without the format string) */
- num_used_args = min(DEBUG_SPRINTF_MAX_ARGS, (num_longs - 1));
+ num_used_args = min(DEBUG_SPRINTF_MAX_ARGS, (num_longs - 1));
- memset(index,0, DEBUG_SPRINTF_MAX_ARGS * sizeof(int));
+ memset(index, 0, DEBUG_SPRINTF_MAX_ARGS * sizeof(int));
- for(i = 0; i < num_used_args; i++)
+ for (i = 0; i < num_used_args; i++)
index[i] = i;
- rc = sprintf(out_buf, curr_event->string, curr_event->args[index[0]],
- curr_event->args[index[1]], curr_event->args[index[2]],
- curr_event->args[index[3]], curr_event->args[index[4]],
- curr_event->args[index[5]], curr_event->args[index[6]],
- curr_event->args[index[7]], curr_event->args[index[8]],
- curr_event->args[index[9]]);
-
+ rc = sprintf(out_buf, curr_event->string, curr_event->args[index[0]],
+ curr_event->args[index[1]], curr_event->args[index[2]],
+ curr_event->args[index[3]], curr_event->args[index[4]],
+ curr_event->args[index[5]], curr_event->args[index[6]],
+ curr_event->args[index[7]], curr_event->args[index[8]],
+ curr_event->args[index[9]]);
out:
-
return rc;
}
projects / platform / kernel / linux-rpi3.git / commitdiff