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authorRandy Dunlap <randy.dunlap@oracle.com>2007-07-15 23:40:25 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 09:05:45 -0700
commite84845c4bf9a00533352e5805b35f42acdb04a1e (patch)
treed5791d8f19b97d8ae925cde32d59d53521e405a7 /kernel/printk.c
parent185848707e73382ba930857502a0b80ff6039967 (diff)
add printk.time option, deprecate 'time'
Allow printk_time to be enabled or disabled at boot time. Previously it could be enabled only, but not disabled. Change printk_time from an int to a bool since that's what it is. Make its logical (exposed) name just be "time" (was "printk_time"). Note: Changes kernel boot option syntax from "time" to "printk.time=value". Since printk_time is declared as a module_param, it can also be changed at run-time by modifying /sys/module/printk/parameters/time to a value of 1/Y/y to enabled it or 0/N/n to disable it. Since printk_time is declared as a module_param, its value can also be set at boot-time by using linux printk.time=<bool> If the "time" boot option is used, print a message that it is deprecated and will be removed. Note its planned removal in feature-removal-schedule.txt. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/printk.c')
-rw-r--r--kernel/printk.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index f46cc6dff46e..fccacf706f53 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -449,13 +449,16 @@ static int printk_time = 1;
#else
static int printk_time = 0;
#endif
-module_param(printk_time, int, S_IRUGO | S_IWUSR);
+module_param_named(time, printk_time, bool, S_IRUGO | S_IWUSR);
static int __init printk_time_setup(char *str)
{
if (*str)
return 0;
printk_time = 1;
+ printk(KERN_NOTICE "The 'time' option is deprecated and "
+ "is scheduled for removal in early 2008\n");
+ printk(KERN_NOTICE "Use 'printk.time=<value>' instead\n");
return 1;
}