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Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk() recursive calls

From Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Newsgroups linux.kernel
Subject Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk() recursive calls
Date 2016-10-19 03:20 +0200
Message-ID <stNHX-1YD-3@gated-at.bofh.it> (permalink)
References <stEOm-3Fs-11@gated-at.bofh.it> <stFKq-4lw-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On (10/18/16 09:45), Joe Perches wrote:
> On Wed, 2016-10-19 at 00:40 +0900, Sergey Senozhatsky wrote:
> > This patch set extends a lock-less NMI per-cpu buffers idea to
> > handle recursive printk() calls.
> 
> trivia:
> 
> recursive or reentrant?

a recursive one.

printk -> {foo} -> printk



reentrant printk() case was addressed by Petr Mladek's nmi patchset:

printk()
	foo
	-------> NMI
		printk()

	-ss

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Thread

[RFC][PATCHv3 0/6] printk: use printk_safe to handle printk() recursive calls Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-10-18 17:50 +0200
  [RFC][PATCHv3 5/6] printk: use printk_safe buffers Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-10-18 17:50 +0200
  [RFC][PATCHv3 2/6] printk: rename nmi.c and exported api Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-10-18 17:50 +0200
    Re: [RFC][PATCHv3 2/6] printk: rename nmi.c and exported api Steven Rostedt <rostedt@goodmis.org> - 2016-10-18 18:50 +0200
      Re: [RFC][PATCHv3 2/6] printk: rename nmi.c and exported api Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-10-19 04:00 +0200
  [RFC][PATCHv3 6/6] printk: remove zap_locks() function Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-10-18 17:50 +0200
  [RFC][PATCHv3 4/6] printk: report lost messages in printk safe/nmi contexts Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-10-18 17:50 +0200
  Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Joe Perches <joe@perches.com> - 2016-10-18 18:50 +0200
    Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-10-19 03:20 +0200
  Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Peter Zijlstra <peterz@infradead.org> - 2016-10-18 19:10 +0200
    Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-10-19 04:00 +0200
      Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Peter Zijlstra <peterz@infradead.org> - 2016-10-19 18:20 +0200
    Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Peter Zijlstra <peterz@infradead.org> - 2016-10-19 16:30 +0200
      Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Sergey Senozhatsky <sergey.senozhatsky@gmail.com> - 2016-10-20 15:20 +0200
    Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Petr Mladek <pmladek@suse.com> - 2016-10-19 16:40 +0200
  Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk()  recursive calls Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> - 2016-10-19 06:40 +0200

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