linux-kernel - Re: [RFC PATCH 3/3] watchdog: Turn console verbosity on when reporting softlockup

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Date:   Thu, 19 Mar 2020 04:18:17 -0400
From:   "Valdis Klētnieks" <valdis.kletnieks@...edu>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     Eugeniu Rosca <erosca@...adit-jv.com>,
        linux-kernel@...r.kernel.org,
        John Ogness <john.ogness@...utronix.de>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Jisheng Zhang <Jisheng.Zhang@...aptics.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Andrew Gabbasov <andrew_gabbasov@...tor.com>,
        Dirk Behme <dirk.behme@...bosch.com>,
        Eugeniu Rosca <roscaeugeniu@...il.com>
Subject: Re: [RFC PATCH 3/3] watchdog: Turn console verbosity on when reporting softlockup

On Thu, 19 Mar 2020 17:01:56 +0900, Sergey Senozhatsky said:
> IIRC, CONFIG_PRINTK_CALLER prints pid when printk() caller is a
> running task, and CPU-id otherwise.

Ah... so it does.

#ifdef CONFIG_PRINTK_CALLER
        u32 caller_id;            /* thread id or processor id */
#endif

I haven't seen it output a processor ID yet, so I didn't know that part...

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