linux-kernel - Re: NMI watchdog dump does not print on hard lockup

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Message-ID: <20171012192620.y7ggb4ylvnrooztw@hirez.programming.kicks-ass.net>
Date:   Thu, 12 Oct 2017 21:26:20 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: NMI watchdog dump does not print on hard lockup

On Thu, Oct 12, 2017 at 12:16:58PM -0400, Steven Rostedt wrote:
> We need a way to have NMI flush to consoles when a lockup is detected,
> and not depend on an irq_work to do so.

Why do you think I never use that crap? early_printk FTW ;-)