From: Andrew Morton <akpm@linux-foundation.org>
To: Robin Holt <holt@sgi.com>, Ingo Molnar <mingo@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>,
Russ Anderson <rja@sgi.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>
Cc: stable@kernel.org
Subject: Re: [PATCH -v6 2/5] Migrate shutdown/reboot to boot cpu.
Date: Wed, 24 Apr 2013 15:19:50 -0700 [thread overview]
Message-ID: <20130424151950.1349c3cdfe08d73f684cda81@linux-foundation.org> (raw)
In-Reply-To: <20130424151749.30b0680dc9392b110537bcd5@linux-foundation.org>
On Wed, 24 Apr 2013 15:17:49 -0700 Andrew Morton <akpm@linux-foundation.org> wrote:
> > +static void migrate_to_reboot_cpu(void)
> > +{
> > + /* The boot cpu is always logical cpu 0 */
> > + int reboot_cpu_id = 0;
> > +
> > + cpu_hotplug_disable();
> > +
> > + /* Make certain the cpu I'm about to reboot on is online */
> > + if (!cpu_online(reboot_cpu_id))
> > + reboot_cpu_id = cpumask_first(cpu_online_mask);
> > +
> > + /* Prevent races with other tasks migrating this task */
> > + current->flags |= PF_THREAD_BOUND;
>
> PF_THREAD_BOUND was removed/replaced in linux-next's a9ab775bc
> ("workqueue: directly restore CPU affinity of workers from CPU_ONLINE")
Which means that we'll need an updated patchset for 3.10-rc1, please.
And when Greg discovers that the patch won't backport correctly, please
provide him with the 3.9.1 version.
next prev parent reply other threads:[~2013-04-24 22:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-24 11:18 [PATCH -v6 0/5] Shutdown from reboot_cpuid without stopping other cpus Robin Holt
2013-04-24 11:18 ` [PATCH -v6 1/5] CPU hotplug: Provide a generic helper to disable/enable CPU hotplug Robin Holt
2013-04-24 11:18 ` [PATCH -v6 2/5] Migrate shutdown/reboot to boot cpu Robin Holt
2013-04-24 22:17 ` Andrew Morton
2013-04-24 22:19 ` Andrew Morton [this message]
2013-04-25 6:57 ` Ingo Molnar
2013-04-25 7:29 ` Andrew Morton
2013-04-25 7:34 ` Ingo Molnar
2013-04-25 15:36 ` Robin Holt
2013-04-24 11:18 ` [PATCH -v6 3/5] Move shutdown/reboot related functions to kernel/reboot.c Robin Holt
2013-04-24 11:18 ` [PATCH -v6 4/5] checkpatch.pl the new kernel/reboot.c file Robin Holt
2013-04-24 11:18 ` [PATCH -v6 5/5] Move arch/x86 reboot= handling to generic kernel Robin Holt
2013-04-24 22:11 ` Andrew Morton
2013-04-25 21:23 ` [PATCH -v6 0/5] Shutdown from reboot_cpuid without stopping other cpus Robin Holt
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