The functions in log.h are already mostly documented, so add them to the generated documentation.
Signed-off-by: Sean Anderson seanga2@gmail.com Reviewed-by: Simon Glass sjg@chromium.org ---
(no changes since v2)
Changes in v2: - Add % before constants in kerneldocs - Document log_level_t and log_category_t members
doc/develop/logging.rst | 5 ++ include/log.h | 142 +++++++++++++++++++++++++--------------- 2 files changed, 95 insertions(+), 52 deletions(-)
diff --git a/doc/develop/logging.rst b/doc/develop/logging.rst index 7ce8482ab6..6a22062073 100644 --- a/doc/develop/logging.rst +++ b/doc/develop/logging.rst @@ -288,3 +288,8 @@ information Add a command to add new log records and delete existing records.
Provide additional log() functions - e.g. logc() to specify the category + +Logging API +----------- +.. kernel-doc:: include/log.h + :internal: diff --git a/include/log.h b/include/log.h index 9f57957aae..639f9e1199 100644 --- a/include/log.h +++ b/include/log.h @@ -17,52 +17,86 @@
struct cmd_tbl;
-/** Log levels supported, ranging from most to least important */ +/** + * enum log_level_t - Log levels supported, ranging from most to least important + */ enum log_level_t { - LOGL_EMERG = 0, /* U-Boot is unstable */ - LOGL_ALERT, /* Action must be taken immediately */ - LOGL_CRIT, /* Critical conditions */ - LOGL_ERR, /* Error that prevents something from working */ - LOGL_WARNING, /* Warning may prevent optimial operation */ - LOGL_NOTICE, /* Normal but significant condition, printf() */ - LOGL_INFO, /* General information message */ - LOGL_DEBUG, /* Basic debug-level message */ - LOGL_DEBUG_CONTENT, /* Debug message showing full message content */ - LOGL_DEBUG_IO, /* Debug message showing hardware I/O access */ + /** @LOGL_EMERG: U-Boot is unstable */ + LOGL_EMERG = 0, + /** @LOGL_ALERT: Action must be taken immediately */ + LOGL_ALERT, + /** @LOGL_CRIT: Critical conditions */ + LOGL_CRIT, + /** @LOGL_ERR: Error that prevents something from working */ + LOGL_ERR, + /** @LOGL_WARNING: Warning may prevent optimial operation */ + LOGL_WARNING, + /** @LOGL_NOTICE: Normal but significant condition, printf() */ + LOGL_NOTICE, + /** @LOGL_INFO: General information message */ + LOGL_INFO, + /** @LOGL_DEBUG: Basic debug-level message */ + LOGL_DEBUG, + /** @LOGL_DEBUG_CONTENT: Debug message showing full message content */ + LOGL_DEBUG_CONTENT, + /** @LOGL_DEBUG_IO: Debug message showing hardware I/O access */ + LOGL_DEBUG_IO,
+ /** @LOGL_COUNT: Total number of valid log levels */ LOGL_COUNT, + /** @LOGL_NONE: Used to indicate that there is no valid log level */ LOGL_NONE,
- LOGL_LEVEL_MASK = 0xf, /* Mask for valid log levels */ - LOGL_FORCE_DEBUG = 0x10, /* Mask to force output due to LOG_DEBUG */ + /** @LOGL_LEVEL_MASK: Mask for valid log levels */ + LOGL_LEVEL_MASK = 0xf, + /** @LOGL_FORCE_DEBUG: Mask to force output due to LOG_DEBUG */ + LOGL_FORCE_DEBUG = 0x10,
+ /** @LOGL_FIRST: The first, most-important log level */ LOGL_FIRST = LOGL_EMERG, + /** @LOGL_MAX: The last, least-important log level */ LOGL_MAX = LOGL_DEBUG_IO, };
/** - * Log categories supported. Most of these correspond to uclasses (i.e. - * enum uclass_id) but there are also some more generic categories + * enum log_category_t - Log categories supported. + * + * Log categories between %LOGC_FIRST and %LOGC_NONE correspond to uclasses + * (i.e. &enum uclass_id), but there are also some more generic categories. */ enum log_category_t { + /** @LOGC_FIRST: First log category */ LOGC_FIRST = 0, /* First part mirrors UCLASS_... */
+ /** @LOGC_NONE: Default log category */ LOGC_NONE = UCLASS_COUNT, /* First number is after all uclasses */ - LOGC_ARCH, /* Related to arch-specific code */ - LOGC_BOARD, /* Related to board-specific code */ - LOGC_CORE, /* Related to core features (non-driver-model) */ - LOGC_DM, /* Core driver-model */ - LOGC_DT, /* Device-tree */ - LOGC_EFI, /* EFI implementation */ - LOGC_ALLOC, /* Memory allocation */ - LOGC_SANDBOX, /* Related to the sandbox board */ - LOGC_BLOBLIST, /* Bloblist */ - LOGC_DEVRES, /* Device resources (devres_... functions) */ - /* Advanced Configuration and Power Interface (ACPI) */ + /** @LOGC_ARCH: Related to arch-specific code */ + LOGC_ARCH, + /** @LOGC_BOARD: Related to board-specific code */ + LOGC_BOARD, + /** @LOGC_CORE: Related to core features (non-driver-model) */ + LOGC_CORE, + /** @LOGC_DM: Core driver-model */ + LOGC_DM, + /** @LOGC_DT: Device-tree */ + LOGC_DT, + /** @LOGC_EFI: EFI implementation */ + LOGC_EFI, + /** @LOGC_ALLOC: Memory allocation */ + LOGC_ALLOC, + /** @LOGC_SANDBOX: Related to the sandbox board */ + LOGC_SANDBOX, + /** @LOGC_BLOBLIST: Bloblist */ + LOGC_BLOBLIST, + /** @LOGC_DEVRES: Device resources (``devres_...`` functions) */ + LOGC_DEVRES, + /** @LOGC_ACPI: Advanced Configuration and Power Interface (ACPI) */ LOGC_ACPI,
- LOGC_COUNT, /* Number of log categories */ - LOGC_END, /* Sentinel value for a list of log categories */ + /** @LOGC_COUNT: Number of log categories */ + LOGC_COUNT, + /** @LOGC_END: Sentinel value for lists of log categories */ + LOGC_END, };
/* Helper to cast a uclass ID to a log category */ @@ -81,7 +115,7 @@ static inline int log_uc_cat(enum uclass_id id) * @func: Function where log record was generated * @fmt: printf() format string for log record * @...: Optional parameters, according to the format string @fmt - * @return 0 if log record was emitted, -ve on error + * Return: 0 if log record was emitted, -ve on error */ int _log(enum log_category_t cat, enum log_level_t level, const char *file, int line, const char *func, const char *fmt, ...) @@ -236,7 +270,7 @@ void __assert_fail(const char *assertion, const char *file, unsigned int line, * full pathname as it may be huge. Only use this when the user should be * warning, similar to BUG_ON() in linux. * - * @return true if assertion succeeded (condition is true), else false + * Return: true if assertion succeeded (condition is true), else false */ #define assert_noisy(x) \ ({ bool _val = (x); \ @@ -320,8 +354,9 @@ enum log_device_flags { */ struct log_driver { const char *name; + /** - * emit() - emit a log record + * @emit: emit a log record * * Called by the log system to pass a log record to a particular driver * for processing. The filter is checked before calling this function. @@ -378,11 +413,11 @@ enum log_filter_flags { * @filter_num: Sequence number of this filter. This is returned when adding a * new filter, and must be provided when removing a previously added * filter. - * @flags: Flags for this filter (LOGFF_...) + * @flags: Flags for this filter (``LOGFF_...``) * @cat_list: List of categories to allow (terminated by %LOGC_END). If empty - * then all categories are permitted. Up to LOGF_MAX_CATEGORIES entries + * then all categories are permitted. Up to %LOGF_MAX_CATEGORIES entries * can be provided - * @level: Maximum (or minimum, if LOGFF_MIN_LEVEL) log level to allow + * @level: Maximum (or minimum, if %LOGFF_MIN_LEVEL) log level to allow * @file_list: List of files to allow, separated by comma. If NULL then all * files are permitted * @sibling_node: Next filter in the list of filters for this log device @@ -407,7 +442,7 @@ struct log_filter { * log_get_cat_name() - Get the name of a category * * @cat: Category to look up - * @return: category name (which may be a uclass driver name) if found, or + * Return: category name (which may be a uclass driver name) if found, or * "<invalid>" if invalid, or "<missing>" if not found. All error * responses begin with '<'. */ @@ -417,7 +452,7 @@ const char *log_get_cat_name(enum log_category_t cat); * log_get_cat_by_name() - Look up a category by name * * @name: Name to look up - * @return category ID, or LOGC_NONE if not found + * Return: Category, or %LOGC_NONE if not found */ enum log_category_t log_get_cat_by_name(const char *name);
@@ -425,7 +460,7 @@ enum log_category_t log_get_cat_by_name(const char *name); * log_get_level_name() - Get the name of a log level * * @level: Log level to look up - * @return log level name (in ALL CAPS) + * Return: Log level name (in ALL CAPS) */ const char *log_get_level_name(enum log_level_t level);
@@ -433,7 +468,7 @@ const char *log_get_level_name(enum log_level_t level); * log_get_level_by_name() - Look up a log level by name * * @name: Name to look up - * @return log level ID, or LOGL_NONE if not found + * Return: Log level, or %LOGL_NONE if not found */ enum log_level_t log_get_level_by_name(const char *name);
@@ -441,7 +476,7 @@ enum log_level_t log_get_level_by_name(const char *name); * log_device_find_by_name() - Look up a log device by its driver's name * * @drv_name: Name of the driver - * @return the log device, or NULL if not found + * Return: the log device, or %NULL if not found */ struct log_device *log_device_find_by_name(const char *drv_name);
@@ -489,15 +524,16 @@ int do_log_test(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]); * * @drv_name: Driver name to add the filter to (since each driver only has a * single device) - * @flags: Flags for this filter (LOGFF_...) + * @flags: Flags for this filter (``LOGFF_...``) * @cat_list: List of categories to allow (terminated by %LOGC_END). If empty - * then all categories are permitted. Up to LOGF_MAX_CATEGORIES entries + * then all categories are permitted. Up to %LOGF_MAX_CATEGORIES entries * can be provided - * @level: Maximum (or minimum, if LOGFF_LEVEL_MIN) log level to allow + * @level: Maximum (or minimum, if %LOGFF_LEVEL_MIN) log level to allow * @file_list: List of files to allow, separated by comma. If NULL then all * files are permitted - * @return the sequence number of the new filter (>=0) if the filter was added, - * or a -ve value on error + * Return: + * the sequence number of the new filter (>=0) if the filter was added, or a + * -ve value on error */ int log_add_filter_flags(const char *drv_name, enum log_category_t cat_list[], enum log_level_t level, const char *file_list, @@ -509,13 +545,14 @@ int log_add_filter_flags(const char *drv_name, enum log_category_t cat_list[], * @drv_name: Driver name to add the filter to (since each driver only has a * single device) * @cat_list: List of categories to allow (terminated by %LOGC_END). If empty - * then all categories are permitted. Up to LOGF_MAX_CATEGORIES entries + * then all categories are permitted. Up to %LOGF_MAX_CATEGORIES entries * can be provided * @max_level: Maximum log level to allow - * @file_list: List of files to allow, separated by comma. If NULL then all + * @file_list: List of files to allow, separated by comma. If %NULL then all * files are permitted - * @return the sequence number of the new filter (>=0) if the filter was added, - * or a -ve value on error + * Return: + * the sequence number of the new filter (>=0) if the filter was added, or a + * -ve value on error */ static inline int log_add_filter(const char *drv_name, enum log_category_t cat_list[], @@ -532,8 +569,9 @@ static inline int log_add_filter(const char *drv_name, * @drv_name: Driver name to remove the filter from (since each driver only has * a single device) * @filter_num: Filter number to remove (as returned by log_add_filter()) - * @return 0 if the filter was removed, -ENOENT if either the driver or the - * filter number was not found + * Return: + * 0 if the filter was removed, -%ENOENT if either the driver or the filter + * number was not found */ int log_remove_filter(const char *drv_name, int filter_num);
@@ -554,7 +592,7 @@ int log_device_set_enable(struct log_driver *drv, bool enable); /** * log_init() - Set up the log system ready for use * - * @return 0 if OK, -ENOMEM if out of memory + * Return: 0 if OK, -%ENOMEM if out of memory */ int log_init(void); #else @@ -568,7 +606,7 @@ static inline int log_init(void) * log_get_default_format() - get default log format * * The default log format is configurable via - * CONFIG_LOGF_FILE, CONFIG_LOGF_LINE, CONFIG_LOGF_FUNC. + * %CONFIG_LOGF_FILE, %CONFIG_LOGF_LINE, and %CONFIG_LOGF_FUNC. * * Return: default log format */