From: george anzinger <george@mvista.com>
To: nigel@nrg.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] improve spinlock debugging
Date: Tue, 04 Dec 2001 13:27:52 -0800 [thread overview]
Message-ID: <3C0D3FD8.59346BBF@mvista.com> (raw)
In-Reply-To: <Pine.LNX.4.40.0112041314010.595-100000@cosmic.nrg.org>
Nigel Gamble wrote:
>
> On Tue, 4 Dec 2001, george anzinger wrote:
> > For example, preemption currently counts
> > up on spin_lock and disable irq, counting the spin_lockirq twice. In
>
> That's not correct: we don't count it twice because we don't count
> local_irq_disable etc., only the spin locks. Because...
>
> > (Oh, and since the irq
> > inhibits preemption all by itself, we don't need to count it either.)
>
> ...so we don't.
Right, but we do count spin_lockirq (just once). See other email, this
time.
--
George george@mvista.com
High-res-timers: http://sourceforge.net/projects/high-res-timers/
Real time sched: http://sourceforge.net/projects/rtsched/
next prev parent reply other threads:[~2001-12-04 21:28 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-03 20:10 [PATCH] improve spinlock debugging Manfred Spraul
2001-12-04 4:21 ` David S. Miller
2001-12-04 4:30 ` Robert Love
2001-12-04 20:30 ` george anzinger
2001-12-04 20:51 ` Robert Love
2001-12-04 21:25 ` george anzinger
2001-12-04 21:39 ` Robert Love
2001-12-04 22:06 ` Nigel Gamble
2001-12-04 22:23 ` Robert Love
2001-12-05 1:13 ` Roman Zippel
2001-12-05 7:41 ` george anzinger
2001-12-04 20:53 ` Manfred Spraul
2001-12-05 0:54 ` george anzinger
2001-12-04 21:20 ` Nigel Gamble
2001-12-04 21:27 ` george anzinger [this message]
2001-12-05 8:47 ` Giuliano Pochini
2001-12-05 15:42 ` Manfred Spraul
[not found] ` <20011219025332.GA18344@krispykreme>
2001-12-20 17:08 ` Manfred Spraul
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