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  • Jan Engelhardt's avatar
    [PATCH] printk time parameter · 3b9c0410
    Jan Engelhardt authored
    Currently, enabling/disabling printk timestamps is only possible through
    reboot (bootparam) or recompile.  I normally do not run with timestamps
    (since syslog handles that in a good manner), but for measuring small
    kernel delays (e.g.  irq probing - see parport thread) I needed subsecond
    precision, but then again, just for some minutes rather than all kernel
    messages to come.  The following patch adds a module_param() with which the
    timestamps can be en-/disabled in a live system through
    Signed-off-by: default avatarJan Engelhardt <>
    Signed-off-by: default avatarAndrew Morton <>
    Signed-off-by: default avatarLinus Torvalds <>