From: Linus Torvalds <torvalds@linux-foundation.org>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>,
ksummit <ksummit-discuss@lists.linuxfoundation.org>
Subject: Re: [Ksummit-discuss] [TECH TOPIC] printk redesign
Date: Sat, 24 Jun 2017 16:26:42 -0700 [thread overview]
Message-ID: <CA+55aFzQyfVnj2mhsZGsOVP7FEc4g7vguGCtkyGy1cMONPeitw@mail.gmail.com> (raw)
In-Reply-To: <20170624232140.GA27473@lunn.ch>
On Sat, Jun 24, 2017 at 4:21 PM, Andrew Lunn <andrew@lunn.ch> wrote:
> This assumes timestamps are fine grained enough. I still prefer a
> sequence number in addition.
Guyes, you're overdesigning.
The general old printk subsystem had "continuations". Nobody ever used
them. Nobody. I know, because they were broken, and nobody even
reported it.
Similarly, nobody is going to use sequence numbers and timestamps.
What *is* going to get used is digital cameras to take pictures of a
screen, and "dmesg" output (and no, dmesg will not use those sequence
numbers either, see above).
If those two things aren't the absolutely primary goals, the whole
thing is pointless to even discuss. No amount of cool features,
performance, or theoretical deadlock avoidance matters ONE WHIT
compared to the two things above.
Linus
next prev parent reply other threads:[~2017-06-24 23:26 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-19 5:21 Sergey Senozhatsky
2017-06-19 6:22 ` Hannes Reinecke
2017-06-19 14:39 ` Steven Rostedt
2017-06-19 15:20 ` Andrew Lunn
2017-06-19 15:54 ` Hannes Reinecke
2017-06-19 16:17 ` Andrew Lunn
2017-06-19 16:23 ` Mark Brown
2017-06-20 15:58 ` Sergey Senozhatsky
2017-06-20 16:44 ` Luck, Tony
2017-06-20 17:11 ` Sergey Senozhatsky
2017-06-20 17:27 ` Mark Brown
2017-06-20 23:28 ` Steven Rostedt
2017-06-21 7:17 ` Hannes Reinecke
2017-06-21 11:12 ` Sergey Senozhatsky
2017-06-22 14:06 ` Steven Rostedt
2017-06-23 5:43 ` Sergey Senozhatsky
2017-06-23 13:09 ` Steven Rostedt
2017-06-21 12:23 ` Petr Mladek
2017-06-21 14:18 ` Andrew Lunn
2017-06-23 8:46 ` Petr Mladek
2017-06-21 16:09 ` Andrew Lunn
2017-06-23 8:49 ` Petr Mladek
2017-07-19 7:35 ` David Woodhouse
2017-07-20 7:53 ` Sergey Senozhatsky
2017-06-20 16:09 ` Sergey Senozhatsky
2017-06-19 16:26 ` Steven Rostedt
2017-06-19 16:35 ` Andrew Lunn
2017-06-24 11:14 ` Mauro Carvalho Chehab
2017-06-24 14:06 ` Andrew Lunn
2017-06-24 22:42 ` Steven Rostedt
2017-06-24 23:21 ` Andrew Lunn
2017-06-24 23:26 ` Linus Torvalds [this message]
2017-06-24 23:40 ` Steven Rostedt
2017-06-26 11:16 ` Sergey Senozhatsky
2017-06-24 23:48 ` Al Viro
2017-06-25 1:29 ` Andrew Lunn
2017-06-25 2:41 ` Linus Torvalds
2017-06-26 8:46 ` Jiri Kosina
2017-07-19 7:59 ` David Woodhouse
2017-06-20 15:56 ` Sergey Senozhatsky
2017-06-20 18:45 ` Daniel Vetter
2017-06-21 9:29 ` Petr Mladek
2017-06-21 10:15 ` Sergey Senozhatsky
2017-06-22 13:42 ` Daniel Vetter
2017-06-22 13:48 ` Daniel Vetter
2017-06-23 9:07 ` Bartlomiej Zolnierkiewicz
2017-06-27 13:06 ` Sergey Senozhatsky
2017-06-23 5:20 ` Sergey Senozhatsky
2017-06-19 23:46 ` Josh Triplett
2017-06-20 8:24 ` Arnd Bergmann
2017-06-20 14:36 ` Steven Rostedt
2017-06-20 15:26 ` Sergey Senozhatsky
2017-06-22 16:35 ` David Howells
2017-07-19 6:24 ` Sergey Senozhatsky
2017-07-19 6:25 ` Sergey Senozhatsky
2017-07-19 7:26 ` Daniel Vetter
2017-07-20 5:19 ` Sergey Senozhatsky
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