diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2023-01-26 16:54:20 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2023-02-02 11:31:38 -0700 |
| commit | a568375ba175d465c7aad2028bd6f7e18c0ff194 (patch) | |
| tree | 324a3fb4ed7139d05072d494e23cc192bc9a00d5 | |
| parent | c1966bd1f0be067ef0824546de881529908fbb54 (diff) | |
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>
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index f7de9516f5f4..d6ae7bd9278f 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -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] |