diff options
Diffstat (limited to 'man7')
| -rw-r--r-- | man7/bootparam.7 | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/man7/bootparam.7 b/man7/bootparam.7 index cb860a6143..2ebed6fc2e 100644 --- a/man7/bootparam.7 +++ b/man7/bootparam.7 @@ -259,21 +259,30 @@ of CPUs activated in SMP mode to N. .SS Boot arguments for use by kernel developers .TP .B "'debug'" -Kernel messages are handed off to the kernel log daemon klogd so that they -may be logged to disk. +Kernel messages are handed off to a daemon (e.g., +.BR klogd (8) +or similar) so that they may be logged to disk. Messages with a priority above .I console_loglevel are also printed on the console. -(For these levels, see -.IR <linux/kernel.h> .) -By default, this variable is set to log anything more important than -debug messages. +(For a discussion of these levels, see +.BR syslog (2).) +By default, +.I console_loglevel +is set to log messages at levels higher than +.BR KERN_DEBUG . This boot argument will cause the kernel to also -print the messages of DEBUG priority. -The console loglevel can also be set at run time via an option -to klogd. -See -.BR klogd (8). +print messages logged at level +.BR KERN_DEBUG . +The console loglevel can also be set on a booted system via the +.IR /proc/sys/kernel/printk +file (described in +.BR syslog (2)), +the +.BR syslog (2) +.B SYSLOG_ACTION_CONSOLE_LEVEL +operation, or +.BR dmesg (8). .TP .B "'profile=N'" It is possible to enable a kernel profiling function, |