On 09/15/2017 09:28 AM, Petr Mladek wrote: > > I am still slightly nervous that external tools would need updating. > Also they might have troubles to interpret the time stamps especially > when the source is changed at runtime via > /sys/module/printk/parameters/time.
In earlier versions I had logic to prevent switching during runtime. tglx requested that it be removed and I removed it. Personally I fall into the "I'm going to set it once and never change it" however, as Mark will offer there are cases where it might be advantageous to change the timestamp. I think he has a patch that will append a b/r/etc. to the timestamp so that userspace can interpret the different timestamps. P.
