From: Andi Kleen <ak@suse.de>
To: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Andi Kleen <ak@suse.de>, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] i386 !NUMA node_to_cpumask broken in early boot
Date: Fri, 19 Aug 2005 04:12:16 +0200 [thread overview]
Message-ID: <20050819021216.GF22993@wotan.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.61.0508181919230.28588@montezuma.fsmlabs.com>
On Thu, Aug 18, 2005 at 08:07:53PM -0600, Zwane Mwaikambo wrote:
> node_to_cpumask on non NUMA systems is broken if used before all the
> processors have been brought up as it returns cpu_online_map, as opposed
> to NUMA i386 systems which does it earlier than AP bringup. So return
> which processors responded via cpu_present_map and switch to
> cpu_online_map during normal runtime. This was found whilst testing a
> patch which does node dependent work before APs have all gone online.
Very ugly and will probably cause code bloat.
If anything define a special early_node_to ... function for this.
-Andi
next prev parent reply other threads:[~2005-08-19 2:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-19 2:07 [PATCH] i386 !NUMA node_to_cpumask broken in early boot Zwane Mwaikambo
2005-08-19 2:12 ` Andi Kleen [this message]
2005-08-19 2:49 ` Zwane Mwaikambo
2005-08-19 3:06 ` Andi Kleen
2005-08-19 3:27 ` Zwane Mwaikambo
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