From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
linux-kernel@vger.kernel.org, "4 . 13+" <stable@vger.kernel.org>
Subject: Re: [PATCH] printk/nmi: Prevent deadlock when serializing NMI backtraces
Date: Wed, 20 Jun 2018 10:58:34 +0900 [thread overview]
Message-ID: <20180620015834.GD650@jagdpanzerIV> (raw)
In-Reply-To: <20180619092304.6b6ba390@gandalf.local.home>
On (06/19/18 09:23), Steven Rostedt wrote:
> > On (06/19/18 09:52), Petr Mladek wrote:
> > > On Mon 2018-06-18 19:07:18, Sergey Senozhatsky wrote:
> > > > On (06/18/18 11:39), Petr Mladek wrote:
> > > > [..]
> > > >
> > > > Hmm. Can't answer right now :)
> > >
> > > Please, let me know what name you would like ;-)
> >
> > :) Wow, it's hard. Maybe we can derive some bits from the ftrace_dump()
> > function name? Dunno... Does printk_dump_nmi_enter() sound terrible?
> >
> > Maybe Steven has some opinions on this?
> >
>
> What exactly is the question?
Which one of these you'd prefer to see in ftrace_dump():
- printk_nmi_direct_enter() / printk_nmi_direct_exit()
- printk_chatty_nmi_enter() / printk_chatty_nmi_exit()
- printk_large_nmi_enter() / printk_large_nmi_exit()
- printk_dump_nmi_enter() / printk_dump_nmi_exit()
> Also, from a previous email in this thread, if you have to risk
> interleaved output to solve a deadlock, then just do that.
Yep.
-ss
next prev parent reply other threads:[~2018-06-20 1:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-17 14:39 [PATCH] printk/nmi: Prevent deadlock when serializing NMI backtraces Petr Mladek
2018-05-18 2:07 ` Sergey Senozhatsky
2018-05-18 6:38 ` Sergey Senozhatsky
2018-05-18 8:10 ` Petr Mladek
2018-05-22 21:43 ` Steven Rostedt
2018-05-23 2:01 ` Sergey Senozhatsky
2018-05-28 12:27 ` Petr Mladek
2018-06-05 12:47 ` Petr Mladek
2018-06-06 5:10 ` Sergey Senozhatsky
2018-06-06 10:33 ` Sergey Senozhatsky
2018-06-08 10:48 ` Petr Mladek
2018-06-18 6:37 ` Sergey Senozhatsky
2018-06-18 9:39 ` Petr Mladek
2018-06-18 10:07 ` Sergey Senozhatsky
2018-06-19 7:52 ` Petr Mladek
2018-06-19 8:27 ` Sergey Senozhatsky
2018-06-19 13:23 ` Steven Rostedt
2018-06-20 1:58 ` Sergey Senozhatsky [this message]
2018-06-20 2:32 ` Steven Rostedt
2018-06-20 4:17 ` Sergey Senozhatsky
2018-06-06 11:15 ` Petr Mladek
2018-06-07 5:40 ` Sergey Senozhatsky
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