From: Robert Love <rml@tech9.net>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: Roger Larsson <roger.larsson@norran.net>,
linux-kernel@vger.kernel.org, nigel@nrg.org
Subject: Re: [SMP lock BUG?] Re: Feedback on preemptible kernel patch
Date: 08 Sep 2001 23:44:27 -0400 [thread overview]
Message-ID: <1000007070.836.14.camel@phantasy> (raw)
In-Reply-To: <000901c138bb$8e151270$010411ac@local>
In-Reply-To: <000901c138bb$8e151270$010411ac@local>
On Sat, 2001-09-08 at 19:11, Manfred Spraul wrote:
> No.
> It seems to be a missing ctx_sw_off() in highmem.h:
> kmap_atomic uses a per-cpu variable, thus ctx_sw_off() is needed in
> kmap_atomic, and ctx_sw_on() in kunmap_atomic().
in my tree, kmap_atomic and kunmap_atomic are just defined to
kmap/kunmap. are you suggesting something like this?
#define kmap_atomic(page,idx) ctx_sw_off(); kmap(page);
#define kunmap_atomic(page,idx) ctx_sw_on(); kunmap(page);
--
Robert M. Love
rml at ufl.edu
rml at tech9.net
next prev parent reply other threads:[~2001-09-09 3:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-08 23:11 [SMP lock BUG?] Re: Feedback on preemptible kernel patch Manfred Spraul
2001-09-09 3:44 ` Robert Love [this message]
2001-09-09 7:38 ` Manfred Spraul
[not found] ` <001a01c1390262c7f30/mnt/sendme10411ac@local>
2001-09-14 9:15 ` Pavel Machek
2001-09-17 22:40 ` Manfred Spraul
2001-09-18 0:19 ` Robert Love
2001-09-17 22:41 ` Robert Love
-- strict thread matches above, loose matches on Subject: below --
2001-09-08 17:33 Arjan Filius
2001-09-08 20:58 ` [SMP lock BUG?] " Roger Larsson
2001-09-08 22:18 ` Arjan Filius
2001-09-09 14:55 ` george anzinger
2001-09-09 22:25 ` Arjan Filius
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