From: Studierende der Universitaet des Saarlandes <masp0008@stud.uni-sb.de>
To: acahalan@cs.uml.edu
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Re: softirq buggy
Date: Mon, 09 Apr 2001 11:37:03 +0000 [thread overview]
Message-ID: <3AD19EDF.5959BF92@stud.uni-saarland.de> (raw)
> > I'd prefer to inline cpu_is_idle(), but optimizing the idle
> >code path is probably not that important ;-)
>
> Sure it is, in one way: how fast can you get back to work?
> (not OK to take a millisecond getting out of the idle loop)
2 short function calls instead of 2 "if(current->need_resched)" on the
way out.
I didn't try very hard to fix the inline dependencies, could you try to
move cpu_is_idle() from kernel/sched.c into <linux/pm.h>?
I'm sure it won't be more difficult than the last "Athlon+SMP doesn't
compile" problem ;-)
--
Manfred
next reply other threads:[~2001-04-09 11:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-09 11:37 Studierende der Universitaet des Saarlandes [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-04-08 17:58 softirq buggy [Re: Serial port latency] kuznet
2001-04-08 21:35 ` [PATCH] Re: softirq buggy Manfred Spraul
2001-04-09 8:42 ` Albert D. Cahalan
2001-04-09 13:50 ` Andrea Arcangeli
2001-04-09 15:26 ` Manfred Spraul
2001-04-09 17:31 ` Andrea Arcangeli
2001-04-09 17:48 ` kuznet
2001-04-09 18:26 ` Andrea Arcangeli
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