Commit a568375b authored Jan 26, 2023 by Bjorn Helgaas Committed by Jonathan Corbet Feb 02, 2023

printk: Document that CONFIG_BOOT_PRINTK_DELAY required for boot_delay=



Document the fact that CONFIG_BOOT_PRINTK_DELAY must be enabled for the
"boot_delay" kernel parameter to work.  Also mention that "lpj=" may be
necessary.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20230126225420.1320276-1-helgaas@kernel.org


Signed-off-by: Jonathan Corbet <corbet@lwn.net>

parent c1966bd1

Documentation/admin-guide/kernel-parameters.txt

+4 −2

Original line number	Diff line number	Diff line
		@@ -478,8 +478,10 @@
		See Documentation/block/cmdline-partition.rst

		boot_delay= Milliseconds to delay each printk during boot.
		Values larger than 10 seconds (10000) are changed to
		no delay (0).
		Only works if CONFIG_BOOT_PRINTK_DELAY is enabled,
		and you may also have to specify "lpj=". Boot_delay
		values larger than 10 seconds (10000) are assumed
		erroneous and ignored.
		Format: integer

		bootconfig [KNL]