log: enable filtering on functions

Up to now we could only use log level, category, and file for filtering.
Allow filtering on a list of functions.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/include/log.h b/include/log.h
index 3f9023ae0d2..dd44badc361 100644
--- a/include/log.h
+++ b/include/log.h
@@ -500,6 +500,7 @@ enum log_filter_flags {
  * @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
+ * @func_list: Comma separated list of functions or NULL.
  * @sibling_node: Next filter in the list of filters for this log device
  */
 struct log_filter {
@@ -508,6 +509,7 @@ struct log_filter {
 	enum log_category_t cat_list[LOGF_MAX_CATEGORIES];
 	enum log_level_t level;
 	const char *file_list;
+	const char *func_list;
 	struct list_head sibling_node;
 };
 
@@ -599,13 +601,14 @@ int do_log_test(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);
  * @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
+ * @func_list: Comma separated list of functions or NULL.
  * 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,
-			 int flags);
+			 const char *func_list, int flags);
 
 /**
  * log_add_filter() - Add a new filter to a log device
@@ -628,7 +631,7 @@ static inline int log_add_filter(const char *drv_name,
 				 const char *file_list)
 {
 	return log_add_filter_flags(drv_name, cat_list, max_level, file_list,
-				    0);
+				    NULL, 0);
 }
 
 /**