[PATCH v2 4/4] Documentation/kernel-parameters: add/update printk_delay/boot_delay

[Andrew Murray]

boot_delay has been deprecated in favour of an extended printk_delay,
let's update kernel-parameters to reflect the addition of printk_delay
and the deprecation of boot_delay.

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
Signed-off-by: Andrew Murray <amurray@xxxxxxxxxxxxxxxxxxxx>
---
 Documentation/admin-guide/kernel-parameters.txt | 31 +++++++++++++++++++++----
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 2884103b93bca7b76cd3a93946276074cf62d0a1..1118feda87b1b04543b1da0bd52c090b1fddaeac 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -650,11 +650,19 @@ Kernel parameters
 			See Documentation/block/cmdline-partition.rst
 
 	boot_delay=	[KNL,EARLY]
-			Milliseconds to delay each printk during boot.
-			Only works if GENERIC_CALIBRATE_DELAY is enabled,
-			and you may also have to specify "lpj=".  Boot_delay
-			values larger than 10 seconds (10000) are assumed
-			erroneous and ignored.
+			Milliseconds to delay each printk during and post boot.
+			Boot time delays only work if GENERIC_CALIBRATE_DELAY
+			is enabled.
+
+			Once booted the delay can be removed or adjusted via
+			the printk_delay sysctl.
+
+			Please note that you may also have to specify "lpj=".
+			Boot_delay values larger than 10 seconds (10000) are
+			assumed erroneous and ignored.
+
+			This will soon be deprecated, please use printk_delay
+			instead.
 			Format: integer
 
 	bootconfig	[KNL,EARLY]
@@ -5468,6 +5476,19 @@ Kernel parameters
 	printk.time=	Show timing data prefixed to each printk message line
 			Format: <bool>  (1/Y/y=enable, 0/N/n=disable)
 
+	printk_delay=	[KNL,EARLY]
+			Milliseconds to delay each printk during and post boot.
+			Boot time delays only work if GENERIC_CALIBRATE_DELAY
+			is enabled.
+
+			Once booted the delay can be removed or adjusted via
+			the printk_delay sysctl.
+
+			Please note that you may also have to specify "lpj=".
+			printk_delay values larger than 10 seconds (10000) are
+			assumed erroneous and ignored.
+			Format: integer
+
 	proc_mem.force_override= [KNL]
 			Format: {always | ptrace | never}
 			Traditionally /proc/pid/mem allows memory permissions to be

-- 
2.34.1