Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps

From	Prarit Bhargava <prarit@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime timestamps
Date	2017-09-15 16:50 +0200
Message-ID	<uq06l-4g8-7@gated-at.bofh.it> (permalink)
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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.

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Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime  timestamps Petr Mladek <pmladek@suse.com> - 2017-09-15 15:30 +0200
  Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime  timestamps Mark Salyzyn <salyzyn@android.com> - 2017-09-15 16:30 +0200
    Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime  timestamps Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2017-09-17 13:00 +0200
      Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime  timestamps Prarit Bhargava <prarit@redhat.com> - 2017-09-19 14:00 +0200
  Re: [PATCH 3/3 v11] printk: Add monotonic, boottime, and realtime  timestamps Prarit Bhargava <prarit@redhat.com> - 2017-09-15 16:50 +0200

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