linux-kernel - [RFC] hrtimer: About the warning message in hrtimer

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Message-Id: <20211224023924.91851-1-yamamoto.rei@jp.fujitsu.com>
Date:   Fri, 24 Dec 2021 11:39:24 +0900
From:   Rei Yamamoto <yamamoto.rei@...fujitsu.com>
To:     tglx@...utronix.de
Cc:     linux-kernel@...r.kernel.org, geert+renesas@...der.be,
        yamamoto.rei@...fujitsu.com
Subject: [RFC] hrtimer: About the warning message in hrtimer_interrupt()

When the following warning message of hrtimer_interrupt() is output,
I often ignore it because I don't know what I should do.
-----
kernel/time/hrtimer.c
void hrtimer_interrupt(struct clock_event_device *dev)
{
:
        pr_warn_once("hrtimer: interrupt took %llu ns\n", 
		      ktime_to_ns(delta));
-----

What is the intention of this message?
What action should be required for this warning?