printk() - restore timestamp printing at console output

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / lib / Kconfig.debug

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index ef8192bc0c336a29976cc9cb583583305ab6ea93..e119341770308c2341bdc59b008ce6636b4492b3 100644 (file)
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -3,12 +3,16 @@ config PRINTK_TIME
        bool "Show timing information on printks"
        depends on PRINTK
        help
-         Selecting this option causes timing information to be
-         included in printk output.  This allows you to measure
-         the interval between kernel operations, including bootup
-         operations.  This is useful for identifying long delays
-         in kernel startup.  Or add printk.time=1 at boot-time.
-         See Documentation/kernel-parameters.txt
+         Selecting this option causes time stamps of the printk()
+         messages to be added to the output of the syslog() system
+         call and at the console.
+
+         The timestamp is always recorded internally, and exported
+         to /dev/kmsg. This flag just specifies if the timestamp should
+         be included, not that the timestamp is recorded.
+
+         The behavior is also controlled by the kernel command line
+         parameter printk.time=1. See Documentation/kernel-parameters.txt
 
 config DEFAULT_MESSAGE_LOGLEVEL
        int "Default message log level (1-7)"