From owner-freebsd-scsi  Tue Feb 25 19:55:44 2003
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Date: Wed, 26 Feb 2003 12:55:39 +0900
Message-ID: <ybssmublmpw.wl@ett.sat.t.u-tokyo.ac.jp>
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: freebsd-scsi@freebsd.org
Subject: Re: call scan_bus in interrupt context.
In-Reply-To: <ybsu1erlna9.wl@ett.sat.t.u-tokyo.ac.jp>
References: <ybsu1erlna9.wl@ett.sat.t.u-tokyo.ac.jp>
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Actually, I really appreciate if we have "XPT_SCAN_TARGET" which can
be called in a interrupt context, and scan all LUNs regardless of
existance of 'LUN 0'(like CAM_QUIRK_HILUN).

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html


At Wed, 26 Feb 2003 12:43:26 +0900,
Hidetoshi Shimokawa wrote:
> 
> Hi,
> 
> I have a question about XPT_SCAN_BUS in CAM.
> I need to initiate a bus scan from a interrupt context but xpt_alloc_ccb()
> failed because it calls malloc with M_WAITOK.
> (kernel panics if you compile it with INVARIANTS in 4-stable)
> 
> I'd like to call it in firewire/sbp.c.
> 
> What is the right way to initiate a bus scan in a interrupt context?
> Do I need a kernel thread to do that?
> 
> /\ Hidetoshi Shimokawa
> \/  simokawa@sat.t.u-tokyo.ac.jp
> PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html

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