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From: Gregory Haskins <gregory.haskins.ml@gmail.com>
To: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Cc: Gregory Haskins <ghaskins@novell.com>,
	Ingo Molnar <mingo@elte.hu>,
	ego@in.ibm.com, suresh.b.siddha@intel.com, yi.y.yang@intel.com,
	tglx@linutronix.de, akpm@linux-foundation.org, rjw@sisk.pl,
	oleg@sign.ru, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] adjust root-domain->online span in response to hotplugevent
Date: Mon, 10 Mar 2008 10:12:18 -0400	[thread overview]
Message-ID: <47D541C2.5070804@gmail.com> (raw)
In-Reply-To: <b647ffbd0803081631y282cfe1blb7343eb1c979b871@mail.gmail.com>

Dmitry Adamushko wrote:
> On 08/03/2008, Gregory Haskins <ghaskins@novell.com> wrote:
> 
> I guess, it's in arch-specific code. e.g. for x86-64,
> 
> down:
> 
> kernel/cpu.c :: _cpu_down -> take_cpu_down() -> __cpu_disable() [
> arch/x86/kernel/smpboot_64.c ] -> cpu_clear(cpu, cpu_online_map)
> 
> up:
> 
> kernel/cpu.c :: _cpu_up() -> __cpu_up [ arch/x86/kernel/smpboot_64.c ]
> -> do_boot_cpu() -> start_secondary() [ runs on a to-be-online cpu ]
> -> cpu_set(smp_processor_id(), cpu_online_map)

Thanks Dmitry!  Your tip helped me to figure out what the real solution 
should be.

Regards,
-Greg

  reply	other threads:[~2008-03-10 14:12 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-02 18:42 [BUG 2.6.25-rc3] scheduler/hotplug: some processes are dealocked when cpu is set to offline Yi Yang
2008-03-03 11:54 ` Dmitry Adamushko
2008-03-03 11:56   ` Ingo Molnar
2008-03-03 12:02     ` Dmitry Adamushko
2008-03-03 14:53       ` Yi Yang
2008-03-03 17:37         ` Yi Yang
2008-03-03 15:31 ` Gautham R Shenoy
2008-03-03 14:45   ` Yi Yang
2008-03-04  5:26     ` Gautham R Shenoy
2008-03-04  9:09       ` Gautham R Shenoy
2008-03-03 21:56         ` Yi Yang
2008-03-04 15:01       ` Oleg Nesterov
2008-03-04 14:37         ` Yi Yang
2008-03-06 20:05           ` Yi Yang
2008-03-05 10:05         ` Gautham R Shenoy
2008-03-05 13:53           ` Oleg Nesterov
2008-03-06 11:15             ` Gautham R Shenoy
2008-03-06 12:22               ` Gautham R Shenoy
2008-03-06 13:44         ` Gautham R Shenoy
2008-03-07  2:54           ` Oleg Nesterov
2008-03-07  9:10             ` Gautham R Shenoy
2008-03-07 10:51               ` Gautham R Shenoy
2008-03-06 23:20                 ` Yi Yang
2008-03-07 13:02                 ` Dmitry Adamushko
2008-03-07 13:55                   ` Gautham R Shenoy
2008-03-07 15:50                     ` Gautham R Shenoy
2008-03-07 19:14                       ` [BUG 2.6.25-rc3] scheduler/hotplug: some processes aredealocked " Suresh Siddha
2008-03-07 20:18                   ` [BUG 2.6.25-rc3] scheduler/hotplug: some processes are dealocked " Andrew Morton
2008-03-07 21:36                     ` Rafael J. Wysocki
2008-03-07 23:01                       ` Suresh Siddha
2008-03-07 23:29                         ` Andrew Morton
2008-03-07 23:43                           ` Rafael J. Wysocki
2008-03-08  1:50                             ` Suresh Siddha
2008-03-08  2:09                               ` Andrew Morton
2008-03-08  5:10                               ` [PATCH] adjust root-domain->online span in response to hotplug event Gregory Haskins
2008-03-08  8:41                                 ` Ingo Molnar
2008-03-08 17:50                                   ` [PATCH] adjust root-domain->online span in response to hotplugevent Gregory Haskins
2008-03-09  0:31                                     ` Dmitry Adamushko
2008-03-10 14:12                                       ` Gregory Haskins [this message]
2008-03-09  2:35                                 ` [PATCH] adjust root-domain->online span in response to hotplug event Suresh Siddha
2008-03-10 12:41                                   ` Gregory Haskins
2008-03-10  8:14                                 ` Gautham R Shenoy
2008-03-10 13:13                                   ` [PATCH] cpu-hotplug: Register update_sched_domains() notifier with higher prio Gautham R Shenoy
2008-03-10 22:25                                     ` Andrew Morton
2008-03-10 13:39                                   ` [PATCH] keep rd->online and cpu_online_map in sync Gregory Haskins
2008-03-10 14:21                                     ` Gautham R Shenoy
2008-03-10 18:12                                     ` Suresh Siddha
2008-03-10 22:03                                       ` Rafael J. Wysocki
2008-03-10 22:00                                         ` Gregory Haskins
2008-03-10 22:10                                           ` Suresh Siddha
2008-03-10 21:59                                             ` [PATCH v2] " Gregory Haskins
2008-03-10 23:36                                               ` Andrew Morton
2008-03-11  1:34                                                 ` Suresh Siddha
2008-03-11  4:39                                                   ` Gautham R Shenoy

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