diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/device.h | 18 | ||||
| -rw-r--r-- | include/linux/dynamic_printk.h | 93 | ||||
| -rw-r--r-- | include/linux/kernel.h | 7 | ||||
| -rw-r--r-- | include/linux/module.h | 1 | ||||
| -rw-r--r-- | include/linux/platform_device.h | 2 | ||||
| -rw-r--r-- | include/linux/sysfs.h | 36 |
6 files changed, 149 insertions, 8 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index 246937c9cbc7..987f5912720a 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -90,6 +90,9 @@ int __must_check bus_for_each_drv(struct bus_type *bus, struct device_driver *start, void *data, int (*fn)(struct device_driver *, void *)); +void bus_sort_breadthfirst(struct bus_type *bus, + int (*compare)(const struct device *a, + const struct device *b)); /* * Bus notifiers: Get notified of addition/removal of devices * and binding/unbinding of drivers to devices. @@ -502,7 +505,6 @@ extern struct device *device_create(struct class *cls, struct device *parent, dev_t devt, void *drvdata, const char *fmt, ...) __attribute__((format(printf, 5, 6))); -#define device_create_drvdata device_create extern void device_destroy(struct class *cls, dev_t devt); /* @@ -551,7 +553,11 @@ extern const char *dev_driver_string(const struct device *dev); #define dev_info(dev, format, arg...) \ dev_printk(KERN_INFO , dev , format , ## arg) -#ifdef DEBUG +#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG) +#define dev_dbg(dev, format, ...) do { \ + dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \ + } while (0) +#elif defined(DEBUG) #define dev_dbg(dev, format, arg...) \ dev_printk(KERN_DEBUG , dev , format , ## arg) #else @@ -567,6 +573,14 @@ extern const char *dev_driver_string(const struct device *dev); ({ if (0) dev_printk(KERN_DEBUG, dev, format, ##arg); 0; }) #endif +/* + * dev_WARN() acts like dev_printk(), but with the key difference + * of using a WARN/WARN_ON to get the message out, including the + * file/line information and a backtrace. + */ +#define dev_WARN(dev, format, arg...) \ + WARN(1, "Device: %s\n" format, dev_driver_string(dev), ## arg); + /* Create alias, so I can be autoloaded. */ #define MODULE_ALIAS_CHARDEV(major,minor) \ MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor)) diff --git a/include/linux/dynamic_printk.h b/include/linux/dynamic_printk.h new file mode 100644 index 000000000000..2d528d009074 --- /dev/null +++ b/include/linux/dynamic_printk.h @@ -0,0 +1,93 @@ +#ifndef _DYNAMIC_PRINTK_H +#define _DYNAMIC_PRINTK_H + +#define DYNAMIC_DEBUG_HASH_BITS 6 +#define DEBUG_HASH_TABLE_SIZE (1 << DYNAMIC_DEBUG_HASH_BITS) + +#define TYPE_BOOLEAN 1 + +#define DYNAMIC_ENABLED_ALL 0 +#define DYNAMIC_ENABLED_NONE 1 +#define DYNAMIC_ENABLED_SOME 2 + +extern int dynamic_enabled; + +/* dynamic_printk_enabled, and dynamic_printk_enabled2 are bitmasks in which + * bit n is set to 1 if any modname hashes into the bucket n, 0 otherwise. They + * use independent hash functions, to reduce the chance of false positives. + */ +extern long long dynamic_printk_enabled; +extern long long dynamic_printk_enabled2; + +struct mod_debug { + char *modname; + char *logical_modname; + char *flag_names; + int type; + int hash; + int hash2; +} __attribute__((aligned(8))); + +int register_dynamic_debug_module(char *mod_name, int type, char *share_name, + char *flags, int hash, int hash2); + +#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG) +extern int unregister_dynamic_debug_module(char *mod_name); +extern int __dynamic_dbg_enabled_helper(char *modname, int type, + int value, int hash); + +#define __dynamic_dbg_enabled(module, type, value, level, hash) ({ \ + int __ret = 0; \ + if (unlikely((dynamic_printk_enabled & (1LL << DEBUG_HASH)) && \ + (dynamic_printk_enabled2 & (1LL << DEBUG_HASH2)))) \ + __ret = __dynamic_dbg_enabled_helper(module, type, \ + value, hash);\ + __ret; }) + +#define dynamic_pr_debug(fmt, ...) do { \ + static char mod_name[] \ + __attribute__((section("__verbose_strings"))) \ + = KBUILD_MODNAME; \ + static struct mod_debug descriptor \ + __used \ + __attribute__((section("__verbose"), aligned(8))) = \ + { mod_name, mod_name, NULL, TYPE_BOOLEAN, DEBUG_HASH, DEBUG_HASH2 };\ + if (__dynamic_dbg_enabled(KBUILD_MODNAME, TYPE_BOOLEAN, \ + 0, 0, DEBUG_HASH)) \ + printk(KERN_DEBUG KBUILD_MODNAME ":" fmt, \ + ##__VA_ARGS__); \ + } while (0) + +#define dynamic_dev_dbg(dev, format, ...) do { \ + static char mod_name[] \ + __attribute__((section("__verbose_strings"))) \ + = KBUILD_MODNAME; \ + static struct mod_debug descriptor \ + __used \ + __attribute__((section("__verbose"), aligned(8))) = \ + { mod_name, mod_name, NULL, TYPE_BOOLEAN, DEBUG_HASH, DEBUG_HASH2 };\ + if (__dynamic_dbg_enabled(KBUILD_MODNAME, TYPE_BOOLEAN, \ + 0, 0, DEBUG_HASH)) \ + dev_printk(KERN_DEBUG, dev, \ + KBUILD_MODNAME ": " format, \ + ##__VA_ARGS__); \ + } while (0) + +#else + +static inline int unregister_dynamic_debug_module(const char *mod_name) +{ + return 0; +} +static inline int __dynamic_dbg_enabled_helper(char *modname, int type, + int value, int hash) +{ + return 0; +} + +#define __dynamic_dbg_enabled(module, type, value, level, hash) ({ 0; }) +#define dynamic_pr_debug(fmt, ...) do { } while (0) +#define dynamic_dev_dbg(dev, format, ...) do { } while (0) +#endif + +#endif diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e971c55f45ac..1f3cd8ad0523 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -16,6 +16,7 @@ #include <linux/log2.h> #include <linux/typecheck.h> #include <linux/ratelimit.h> +#include <linux/dynamic_printk.h> #include <asm/byteorder.h> #include <asm/bug.h> @@ -304,8 +305,12 @@ static inline char *pack_hex_byte(char *buf, u8 byte) #define pr_info(fmt, arg...) \ printk(KERN_INFO fmt, ##arg) -#ifdef DEBUG /* If you are writing a driver, please use dev_dbg instead */ +#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG) +#define pr_debug(fmt, ...) do { \ + dynamic_pr_debug(fmt, ##__VA_ARGS__); \ + } while (0) +#elif defined(DEBUG) #define pr_debug(fmt, arg...) \ printk(KERN_DEBUG fmt, ##arg) #else diff --git a/include/linux/module.h b/include/linux/module.h index 68e09557c951..a41555cbe00a 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -345,7 +345,6 @@ struct module /* Reference counts */ struct module_ref ref[NR_CPUS]; #endif - }; #ifndef MODULE_ARCH_INIT #define MODULE_ARCH_INIT {} diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 95ac21ab3a09..4b8cc6a32479 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -37,6 +37,8 @@ extern int platform_add_devices(struct platform_device **, int); extern struct platform_device *platform_device_register_simple(const char *, int id, struct resource *, unsigned int); +extern struct platform_device *platform_device_register_data(struct device *, + const char *, int, const void *, size_t); extern struct platform_device *platform_device_alloc(const char *name, int id); extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num); diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index 37fa24152bd8..b330e289d71f 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -78,6 +78,8 @@ struct sysfs_ops { ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t); }; +struct sysfs_dirent; + #ifdef CONFIG_SYSFS int sysfs_schedule_callback(struct kobject *kobj, void (*func)(void *), @@ -117,9 +119,14 @@ int sysfs_add_file_to_group(struct kobject *kobj, void sysfs_remove_file_from_group(struct kobject *kobj, const struct attribute *attr, const char *group); -void sysfs_notify(struct kobject *kobj, char *dir, char *attr); - -extern int __must_check sysfs_init(void); +void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); +void sysfs_notify_dirent(struct sysfs_dirent *sd); +struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd, + const unsigned char *name); +struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd); +void sysfs_put(struct sysfs_dirent *sd); +void sysfs_printk_last_file(void); +int __must_check sysfs_init(void); #else /* CONFIG_SYSFS */ @@ -222,7 +229,24 @@ static inline void sysfs_remove_file_from_group(struct kobject *kobj, { } -static inline void sysfs_notify(struct kobject *kobj, char *dir, char *attr) +static inline void sysfs_notify(struct kobject *kobj, const char *dir, + const char *attr) +{ +} +static inline void sysfs_notify_dirent(struct sysfs_dirent *sd) +{ +} +static inline +struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd, + const unsigned char *name) +{ + return NULL; +} +static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd) +{ + return NULL; +} +static inline void sysfs_put(struct sysfs_dirent *sd) { } @@ -231,6 +255,10 @@ static inline int __must_check sysfs_init(void) return 0; } +static inline void sysfs_printk_last_file(void) +{ +} + #endif /* CONFIG_SYSFS */ #endif /* _SYSFS_H_ */ |