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Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk

From Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk
Date 2017-02-02 03:20 +0100
Message-ID <t6fa9-5Yb-1@gated-at.bofh.it> (permalink)
References (1 earlier) <sT0LE-36Q-29@gated-at.bofh.it> <t5Kzn-3vy-11@gated-at.bofh.it> <t5Z5o-3VC-25@gated-at.bofh.it> <t5Zyr-4a5-41@gated-at.bofh.it> <t65aO-7Hf-25@gated-at.bofh.it>
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On (02/01/17 16:39), Petr Mladek wrote:
[..]
> I guess that you are talking about the introduction of
> #define SCHED_WARN_ON(x)	WARN_ONCE(x, #x)

my guess would be that Jan was talking about printk_deferred() patch.
it's on my TODO list.

I want to entirely remove console_sem and scheduler out of printk() path.
that's the only way to make printk() deadlock safe.

	-ss

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Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Ross Zwisler <zwisler@gmail.com> - 2017-01-31 18:40 +0100
  Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Jan Kara <jack@suse.cz> - 2017-02-01 10:10 +0100
    Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Peter Zijlstra <peterz@infradead.org> - 2017-02-01 10:40 +0100
      Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Petr Mladek <pmladek@suse.com> - 2017-02-01 16:40 +0100
        Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Peter Zijlstra <peterz@infradead.org> - 2017-02-01 17:20 +0100
          Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Steven Rostedt <rostedt@goodmis.org> - 2017-02-01 17:50 +0100
        Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2017-02-02 03:20 +0100
          Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Peter Zijlstra <peterz@infradead.org> - 2017-02-02 10:10 +0100
            Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2017-02-02 11:10 +0100
              Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Petr Mladek <pmladek@suse.com> - 2017-02-02 16:30 +0100
                Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2017-02-03 03:50 +0100
  Re: [PATCHv7 6/8] printk: use printk_safe buffers in printk Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2017-02-02 03:00 +0100

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