diff options
Diffstat (limited to 'include/log.h')
| -rw-r--r-- | include/log.h | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/include/log.h b/include/log.h index 2859ce1f2e..4acc087b2e 100644 --- a/include/log.h +++ b/include/log.h @@ -33,6 +33,9 @@ enum log_level_t { LOGL_COUNT, LOGL_NONE, + LOGL_LEVEL_MASK = 0xf, /* Mask for valid log levels */ + LOGL_FORCE_DEBUG = 0x10, /* Mask to force output due to LOG_DEBUG */ + LOGL_FIRST = LOGL_EMERG, LOGL_MAX = LOGL_DEBUG_IO, }; @@ -133,7 +136,7 @@ static inline int _log_nop(enum log_category_t cat, enum log_level_t level, #if CONFIG_IS_ENABLED(LOG) #ifdef LOG_DEBUG -#define _LOG_DEBUG 1 +#define _LOG_DEBUG LOGL_FORCE_DEBUG #else #define _LOG_DEBUG 0 #endif @@ -141,9 +144,11 @@ static inline int _log_nop(enum log_category_t cat, enum log_level_t level, /* Emit a log record if the level is less that the maximum */ #define log(_cat, _level, _fmt, _args...) ({ \ int _l = _level; \ - if (CONFIG_IS_ENABLED(LOG) && (_l <= _LOG_MAX_LEVEL || _LOG_DEBUG)) \ - _log((enum log_category_t)(_cat), _l, __FILE__, __LINE__, \ - __func__, \ + if (CONFIG_IS_ENABLED(LOG) && \ + (_LOG_DEBUG != 0 || _l <= _LOG_MAX_LEVEL)) \ + _log((enum log_category_t)(_cat), \ + (enum log_level_t)(_l | _LOG_DEBUG), __FILE__, \ + __LINE__, __func__, \ pr_fmt(_fmt), ##_args); \ }) #else @@ -279,8 +284,12 @@ void __assert_fail(const char *assertion, const char *file, unsigned int line, * Memebers marked as 'allocated' are allocated (e.g. via strdup()) by the log * system. * + * TODO(sjg@chromium.org): Compress this struct down a bit to reduce space, e.g. + * a single u32 for cat, level, line and force_debug + * * @cat: Category, representing a uclass or part of U-Boot * @level: Severity level, less severe is higher + * @force_debug: Force output of debug * @file: Name of file where the log record was generated (not allocated) * @line: Line number where the log record was generated * @func: Function where the log record was generated (not allocated) @@ -289,6 +298,7 @@ void __assert_fail(const char *assertion, const char *file, unsigned int line, struct log_rec { enum log_category_t cat; enum log_level_t level; + bool force_debug; const char *file; int line; const char *func; @@ -297,10 +307,16 @@ struct log_rec { struct log_device; +enum log_device_flags { + LOGDF_ENABLE = BIT(0), /* Device is enabled */ +}; + /** * struct log_driver - a driver which accepts and processes log records * * @name: Name of driver + * @emit: Method to call to emit a log record via this device + * @flags: Initial value for flags (use LOGDF_ENABLE to enable on start-up) */ struct log_driver { const char *name; @@ -311,6 +327,7 @@ struct log_driver { * for processing. The filter is checked before calling this function. */ int (*emit)(struct log_device *ldev, struct log_rec *rec); + unsigned short flags; }; /** @@ -323,12 +340,14 @@ struct log_driver { * @next_filter_num: Seqence number of next filter filter added (0=no filters * yet). This increments with each new filter on the device, but never * decrements + * @flags: Flags for this filter (enum log_device_flags) * @drv: Pointer to driver for this device * @filter_head: List of filters for this device * @sibling_node: Next device in the list of all devices */ struct log_device { - int next_filter_num; + unsigned short next_filter_num; + unsigned short flags; struct log_driver *drv; struct list_head filter_head; struct list_head sibling_node; @@ -369,6 +388,10 @@ struct log_filter { #define LOG_DRIVER(_name) \ ll_entry_declare(struct log_driver, _name, log_driver) +/* Get a pointer to a given driver */ +#define LOG_GET_DRIVER(__name) \ + ll_entry_get(struct log_driver, __name, log_driver) + /** * log_get_cat_name() - Get the name of a category * @@ -446,6 +469,19 @@ int log_add_filter(const char *drv_name, enum log_category_t cat_list[], */ int log_remove_filter(const char *drv_name, int filter_num); +/** + * log_device_set_enable() - Enable or disable a log device + * + * Devices are referenced by their driver, so use LOG_GET_DRIVER(name) to pass + * the driver to this function. For example if the driver is declared with + * LOG_DRIVER(wibble) then pass LOG_GET_DRIVER(wibble) here. + * + * @drv: Driver of device to enable + * @enable: true to enable, false to disable + * @return 0 if OK, -ENOENT if the driver was not found + */ +int log_device_set_enable(struct log_driver *drv, bool enable); + #if CONFIG_IS_ENABLED(LOG) /** * log_init() - Set up the log system ready for use |