From: William Lee Irwin III <wli@holomorphy.com>
To: Albert Cahalan <albert@users.sf.net>
Cc: Jakub Jelinek <jakub@redhat.com>,
Albert Cahalan <albert@users.sourceforge.net>,
linux-kernel mailing list <linux-kernel@vger.kernel.org>,
ak@muc.de
Subject: Re: get_current is __pure__, maybe __const__ even
Date: Wed, 15 Sep 2004 19:36:04 -0700 [thread overview]
Message-ID: <20040916023604.GH9106@holomorphy.com> (raw)
In-Reply-To: <1095300619.2191.6392.camel@cube>
On Wed, Sep 15, 2004 at 07:15:18PM -0400, Jakub Jelinek wrote:
>>> current will certainly change in schedule (),
On Wed, Sep 15, 2004 at 10:10:20PM -0400, Albert Cahalan wrote:
> Not really!
Yes it does. The interior of schedule() is C and must be compiled also.
At some point in the past, I wrote:
>> Why would barrier() not suffice?
On Wed, Sep 15, 2004 at 10:10:20PM -0400, Albert Cahalan wrote:
> I don't think even barrier() is needed.
> Suppose gcc were to cache the value of
> current over a schedule. Who cares? It'll
> be the same after schedule() as it was
> before.
Not over a call to schedule(). In the midst of schedule().
-- wli
next prev parent reply other threads:[~2004-09-16 2:36 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-15 22:50 get_current is __pure__, maybe __const__ even Albert Cahalan
2004-09-15 23:15 ` Jakub Jelinek
2004-09-15 23:29 ` William Lee Irwin III
2004-09-16 2:10 ` Albert Cahalan
2004-09-16 2:36 ` William Lee Irwin III [this message]
2004-09-16 2:47 ` Nick Piggin
2004-09-16 3:23 ` William Lee Irwin III
2004-09-16 3:49 ` Albert Cahalan
2004-09-16 3:59 ` William Lee Irwin III
2004-09-16 9:04 ` Russell King
2004-09-16 9:11 ` Andi Kleen
2004-09-16 9:30 ` Russell King
2004-09-16 11:03 ` Andi Kleen
2004-09-16 14:36 ` Russell King
2004-09-15 23:27 ` William Lee Irwin III
[not found] <2ER4z-46B-17@gated-at.bofh.it>
2004-09-16 6:58 ` Andi Kleen
2004-09-16 13:43 ` Albert Cahalan
2004-09-16 14:14 ` Albert Cahalan
2004-09-16 19:27 ` Andi Kleen
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