From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: soft lockup - CPU#0 stuck for 61s! problem
Date: Mon, 28 Jun 2010 11:29:31 +0100 [thread overview]
Message-ID: <20100628102931.GA30050@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <AANLkTin_iY-7nUwtf1q7Fz4qdnkA0BUktEC6WwCiQdOX@mail.gmail.com>
On Mon, Jun 28, 2010 at 03:50:24PM +0530, Harishkumar V wrote:
> Will capture the further messages and mail u. Why an IRQ got struck, is
> their a way to handle this....
Normally, the kernel will disable the interrupt so the system can
continue to (mostly) function.
However, people like to return IRQ_HANDLED from interrupt handlers,
even when they've found nothing to do. This prevents the kernel from
rescuing you from the stuck-IRQ problem. Interrupt handlers are
supposed to return IRQ_HANDLED if they did something to handle the IRQ,
or IRQ_NONE if they found nothing to do.
I can't say much more than that - I've no idea what hardware you're
running the kernel on, and therefore I can't guess what IRQ92 might be.
next prev parent reply other threads:[~2010-06-28 10:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-28 5:55 soft lockup - CPU#0 stuck for 61s! problem Harishkumar V
2010-06-28 9:00 ` Russell King - ARM Linux
2010-06-28 10:20 ` Harishkumar V
2010-06-28 10:29 ` Russell King - ARM Linux [this message]
2010-06-29 6:21 ` Harishkumar V
2010-06-29 20:05 ` Russell King - ARM Linux
2010-07-05 11:36 ` Harishkumar V
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