From: Ingo Molnar <mingo@elte.hu>
To: Nathan Lynch <ntl@pobox.com>
Cc: Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, Nick Piggin <npiggin@suse.de>,
Giuliano Pochini <pochini@shiny.it>
Subject: Re: [PATCH 2.6.20] tasks cannot run on cpus onlined after boot
Date: Sun, 7 Jan 2007 16:48:04 +0100 [thread overview]
Message-ID: <20070107154804.GB3865@elte.hu> (raw)
In-Reply-To: <20070107084955.GD7654@localdomain>
* Nathan Lynch <ntl@pobox.com> wrote:
> Commit 5c1e176781f43bc902a51e5832f789756bff911b ("sched: force
> /sbin/init off isolated cpus") sets init's cpus_allowed to a subset of
> cpu_online_map at boot time, which means that tasks won't be scheduled
> on cpus that are added to the system later.
>
> Make init's cpus_allowed a subset of cpu_possible_map instead. This
> should still preserve the behavior that Nick's change intended.
>
> Thanks to Giuliano Pochini for reporting this and testing the fix:
>
> http://ozlabs.org/pipermail/linuxppc-dev/2006-December/029397.html
>
> Signed-off-by: Nathan Lynch <ntl@pobox.com>
nicely spotted!
> - cpus_andnot(non_isolated_cpus, cpu_online_map, cpu_isolated_map);
> + cpus_andnot(non_isolated_cpus, cpu_possible_map, cpu_isolated_map);
Acked-by: Ingo Molnar <mingo@elte.hu>
Ingo
prev parent reply other threads:[~2007-01-07 15:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-07 8:49 [PATCH 2.6.20] tasks cannot run on cpus onlined after boot Nathan Lynch
2007-01-07 15:48 ` Ingo Molnar [this message]
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