From: Thomas Gleixner <tglx@linutronix.de>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: john stultz <johnstul@us.ibm.com>, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org
Subject: Re: False positive (well not really) on RT backward clock check
Date: Fri, 21 Oct 2005 17:52:15 +0200 [thread overview]
Message-ID: <1129909935.15748.12.camel@tglx.tec.linutronix.de> (raw)
In-Reply-To: <Pine.LNX.4.58.0510211142060.5770@localhost.localdomain>
On Fri, 2005-10-21 at 11:46 -0400, Steven Rostedt wrote:
>
> I think you're right about that. Here it is.
>
> Sorry for the late reply. The original was from my custom kernel and I
> wanted to get an output from Ingo's. This is rc5-rt1.
>
> -- Steve
>
> isapnp: Scanning for PnP cards...
> Time: tsc clocksource has been installed.
> WARNING: non-monotonic time!
> Ktimers: Switched to high resolution mode CPU 0
> softirq-timer/1/14[CPU#1]: BUG in ktime_get at kernel/ktimers.c:101
> [<c0104433>] dump_stack+0x23/0x30 (20)
> [<c0121427>] __WARN_ON+0x67/0x80 (44)
> [<c013ad82>] ktime_get+0xd2/0x100 (48)
> [<c013c2b6>] ktimer_run_queues+0x56/0x130 (60)
> [<c012abbe>] run_timer_softirq+0x12e/0x450 (56)
> [<c01268b0>] ksoftirqd+0x120/0x1a0 (40)
> [<c01376eb>] kthread+0xbb/0xc0 (48)
> [<c01014a5>] kernel_thread_helper+0x5/0x10 (538427420)
> ---------------------------
> | preempt count: 00000001 ]
> | 1-level deep critical section nesting:
> ----------------------------------------
> .. [<c0143edc>] .... add_preempt_count+0x1c/0x20
> .....[<c01213db>] .. ( <= __WARN_ON+0x1b/0x80)
>
> Ktimers: Switched to high resolution mode CPU 1
This is at the moment where the clock source is switched over. I check
what might be the reason.
John, any idea ?
tglx
next prev parent reply other threads:[~2005-10-21 15:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-21 13:45 Steven Rostedt
2005-10-21 13:52 ` Thomas Gleixner
2005-10-21 15:46 ` Steven Rostedt
2005-10-21 15:52 ` Thomas Gleixner [this message]
2005-10-21 17:59 ` john stultz
2005-10-21 18:13 ` Thomas Gleixner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1129909935.15748.12.camel@tglx.tec.linutronix.de \
--to=tglx@linutronix.de \
--cc=johnstul@us.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®