On (02/13/19 15:14), xiang xiao wrote: > > But how can I precisely control timestamp on/off per message > through sysfs node? >
Hmm. I don't know how many kernel printk-s you have and how often do you write to kmsg. I was thinking about something like this: echo 0 > /...printk.../time dump buffer to /dev/kmsg echo 1 > /...printk../time - If you would have several kernel printk-s in the meantime, then those would not have timestamps, but you kinda can roughly guess it write [1243] foo > /dev/kmsg write [1244] foo > /dev/kmsg << printk(bar) <timestamp ~[1244,1245]> write [1245] foo > /dev/kmsg Maybe this won't suffice. -ss