From: Nick Piggin <piggin@cyberone.com.au>
To: Mr Amit Patel <patelamitv@YAHOO.COM>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: as_arq scheduler alloc with 2.6.0-test8-mm1
Date: Tue, 28 Oct 2003 10:36:06 +1100 [thread overview]
Message-ID: <3F9DABE6.7050501@cyberone.com.au> (raw)
In-Reply-To: <20031027175935.15690.qmail@web13005.mail.yahoo.com>
Mr Amit Patel wrote:
>Hi Andrew,
>
>The qlogic driver is for Fibre Channel HBA QLA2342.
>This is a beta driver which is part of the mjb1 patch
>against 2.6.0-test8. As a part of driver insmod,
>driver tries to find fiber channel device and maps it
>to scsi block device. Actually I don't have any fibre
>channel target attached, so driver does not find any
>scsi devices and discovery finishes without adding any
>block device.
>
>I am trying to go through driver scsi_scan process and
>see when does actual allocation from as_arq happens.
>But for some reason after going to kgdb I get SIGEMT
>and I cannot debug further. What is causing SIGEMT
>cause after doing some search looks like its actually
>SIGUSR but linux treats it as SIGEMT. Is there any way
>to prevent SIGEMT when I want to use kgdb ?
>
>Thanks for your help,
>
Hi Amit,
I'm a little bit busy to look at this now, however someone
is looking into all these refcounting problems.
If you would like to narrow it down a bit, check that the
request queues that are allocated are all released when the
driver is unloaded (drivers/block/ll_rw_blk.c blk_alloc_queue
and blk_cleanup_queue). Just stick a couple of printks there
if your debugger isn't working.
next prev parent reply other threads:[~2003-10-27 23:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-26 9:54 as_arq scheduler alloc with 2.6.0-test8-mm1 Mr Amit Patel
2003-10-26 11:41 ` Andrew Morton
2003-10-26 18:03 ` Mr Amit Patel
2003-10-27 17:59 ` Mr Amit Patel
2003-10-27 21:38 ` Andrew Morton
2003-10-27 23:36 ` Nick Piggin [this message]
2003-10-29 1:45 ` Amit Patel
[not found] <3F9F2928.7030704@cyberone.com.au>
2003-10-29 4:34 ` Amit Patel
2003-10-29 4:48 ` Nick Piggin
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