From: "Dmitry Adamushko" <dmitry.adamushko@gmail.com>
To: yi.y.yang@intel.com
Cc: "Ingo Molnar" <mingo@elte.hu>,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [BUG 2.6.25-rc3] scheduler/hotplug: some processes are dealocked when cpu is set to offline
Date: Mon, 3 Mar 2008 13:02:51 +0100 [thread overview]
Message-ID: <b647ffbd0803030402t3a0a9acej75bc92be39db5204@mail.gmail.com> (raw)
In-Reply-To: <20080303115652.GA9257@elte.hu>
[-- Attachment #1: Type: text/plain, Size: 893 bytes --]
On 03/03/2008, Ingo Molnar <mingo@elte.hu> wrote:
>
> * Dmitry Adamushko <dmitry.adamushko@gmail.com> wrote:
>
> > per_cpu(watchdog_task, hotcpu) = NULL;
> > + mlseep(1);
>
>
> that wont build very well ...
yeah, I forgot to mention that it's not even compile-tested :-/
I re-created it from scratch instead of looking for the original one.
please, this one (again, not compile-tested)
--- softlockup-prev-2.c 2008-03-03 12:38:36.000000000 +0100
+++ softlockup.c 2008-03-03 13:00:20.000000000 +0100
@@ -294,6 +294,7 @@ cpu_callback(struct notifier_block *nfb,
case CPU_DEAD_FROZEN:
p = per_cpu(watchdog_task, hotcpu);
per_cpu(watchdog_task, hotcpu) = NULL;
+ msleep(1);
kthread_stop(p);
break;
#endif /* CONFIG_HOTPLUG_CPU */
--
Best regards,
Dmitry Adamushko
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: softlockup-debug-2.patch --]
[-- Type: text/x-patch; name=softlockup-debug-2.patch, Size: 356 bytes --]
--- softlockup-prev-2.c 2008-03-03 12:38:36.000000000 +0100
+++ softlockup.c 2008-03-03 13:00:20.000000000 +0100
@@ -294,6 +294,7 @@ cpu_callback(struct notifier_block *nfb,
case CPU_DEAD_FROZEN:
p = per_cpu(watchdog_task, hotcpu);
per_cpu(watchdog_task, hotcpu) = NULL;
+ msleep(1);
kthread_stop(p);
break;
#endif /* CONFIG_HOTPLUG_CPU */
next prev parent reply other threads:[~2008-03-03 12:03 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-02 18:42 Yi Yang
2008-03-03 11:54 ` Dmitry Adamushko
2008-03-03 11:56 ` Ingo Molnar
2008-03-03 12:02 ` Dmitry Adamushko [this message]
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
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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