From: Jeff Garzik <jgarzik@pobox.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Jack Steiner <steiner@sgi.com>, Andrew Morton <akpm@osdl.org>,
Ravikiran G Thirumalai <kiran@in.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: hot cache line due to note_interrupt()
Date: Sat, 15 Nov 2003 00:18:05 -0500 [thread overview]
Message-ID: <3FB5B70D.3090309@pobox.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0311141015050.1861-100000@home.osdl.org>
Linus Torvalds wrote:
> The fact is, irqdebug _has_ resulted in a few reports where instead of a
> silent and total lock-up, the kernel just said "I'll disable this irq" and
> the machine continued limping along.
I strongly agree.
There are two huge reasons I develop and debug drivers solely in 2.6
now: kksymoops and irqdebug. Both have helped a great deal in tracking
down problems. Indeed, screaming irqs that lead to lockups are
instantly detected in 2.6.
But hey... I'm just a developer. Who can say whether it should be on by
default?
Jeff
next prev parent reply other threads:[~2003-11-15 5:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-10 21:58 hot cache line due to note_interrupt() Jack Steiner
2003-11-10 23:00 ` Anton Blanchard
2003-11-11 8:29 ` Ravikiran G Thirumalai
2003-11-11 16:25 ` Anton Blanchard
2003-11-11 19:58 ` Andrew Morton
2003-11-14 17:45 ` Jack Steiner
2003-11-14 17:57 ` Andrew Morton
2003-11-14 18:11 ` Jack Steiner
2003-11-14 18:10 ` David Mosberger
2003-11-14 18:17 ` Linus Torvalds
2003-11-15 5:18 ` Jeff Garzik [this message]
2003-11-14 19:10 ` Anton Blanchard
2003-11-14 19:28 ` Mike Fedyk
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