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-rw-r--r--doc/README.log27
1 files changed, 27 insertions, 0 deletions
diff --git a/doc/README.log b/doc/README.log
index f653fe7d797..54d9a8e1b90 100644
--- a/doc/README.log
+++ b/doc/README.log
@@ -68,6 +68,19 @@ If CONFIG_LOG is not set, then no logging will be available.
The above have SPL versions also, e.g. CONFIG_SPL_MAX_LOG_LEVEL.
+Log commands
+------------
+
+The 'log' command provides access to several features:
+
+ level - access the default log level
+ format - access the console log format
+ rec - output a log record
+ test - run tests
+
+Type 'help log' for details.
+
+
Using DEBUG
-----------
@@ -94,6 +107,20 @@ enabled or disabled independently:
console - goes to stdout
+Log format
+----------
+
+You can control the log format using the 'log format' command. The basic
+format is:
+
+ LEVEL.category,file.c:123-func() message
+
+In the above, file.c:123 is the filename where the log record was generated and
+func() is the function name. By default ('log format default') only the
+function name and message are displayed on the console. You can control which
+fields are present, but not the field order.
+
+
Filters
-------