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From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Joe Perches <joe@perches.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Petr Mladek <pmladek@suse.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jan Kara <jack@suse.cz>, Tejun Heo <tj@kernel.org>,
	Calvin Owens <calvinowens@fb.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Mel Gorman <mgorman@techsingularity.net>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	linux-kernel@vger.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: Re: [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk() recursive calls
Date: Wed, 19 Oct 2016 10:14:34 +0900	[thread overview]
Message-ID: <20161019011434.GB513@swordfish> (raw)
In-Reply-To: <1476809130.2009.1.camel@perches.com>

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

  reply	other threads:[~2016-10-19  1:14 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-18 15:40 [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk() recursive calls Sergey Senozhatsky
2016-10-18 15:40 ` [RFC][PATCHv3 1/6] printk: use vprintk_func in vprintk() Sergey Senozhatsky
2016-10-18 16:49   ` Steven Rostedt
2016-10-19  1:54     ` Sergey Senozhatsky
2016-10-18 15:40 ` [RFC][PATCHv3 2/6] printk: rename nmi.c and exported api Sergey Senozhatsky
2016-10-18 16:49   ` Steven Rostedt
2016-10-19  1:54     ` Sergey Senozhatsky
2016-10-18 15:40 ` [RFC][PATCHv3 3/6] printk: introduce per-cpu safe_print seq buffer Sergey Senozhatsky
2016-10-18 16:46   ` Steven Rostedt
2016-10-19  1:10     ` Sergey Senozhatsky
2016-10-19 13:42   ` Sergey Senozhatsky
2016-10-18 15:40 ` [RFC][PATCHv3 4/6] printk: report lost messages in printk safe/nmi contexts Sergey Senozhatsky
2016-10-18 15:40 ` [RFC][PATCHv3 5/6] printk: use printk_safe buffers Sergey Senozhatsky
2016-10-18 15:40 ` [RFC][PATCHv3 6/6] printk: remove zap_locks() function Sergey Senozhatsky
2016-10-18 16:45 ` [RFC][PATCHv3 0/6] printk: use printk_safe to handle printk() recursive calls Joe Perches
2016-10-19  1:14   ` Sergey Senozhatsky [this message]
2016-10-18 17:07 ` Peter Zijlstra
2016-10-19  1:53   ` Sergey Senozhatsky
2016-10-19  9:30     ` Peter Zijlstra
2016-10-19 13:18   ` Petr Mladek
2016-10-19 13:34     ` Peter Zijlstra
2016-10-20 13:18       ` Sergey Senozhatsky
2016-10-19  4:33 ` Sergey Senozhatsky

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