From: Andrew Morton <akpm@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Steven Rostedt <srostedt@redhat.com>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
linux-ia64 <linux-ia64@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Tony Luck <tony.luck@intel.com>, Ingo Molnar <mingo@redhat.com>,
Bob Picco <bob.picco@hp.com>, Eric Whitney <eric.whitney@hp.com>
Subject: Re: 2.6.25-rc2-mm1 - boot hangs on ia64
Date: Thu, 28 Feb 2008 18:13:43 +0000 [thread overview]
Message-ID: <20080228101343.1b9548e6.akpm@linux-foundation.org> (raw)
In-Reply-To: <20080228115041.GA22082@elte.hu>
On Thu, 28 Feb 2008 12:50:41 +0100 Ingo Molnar <mingo@elte.hu> wrote:
> @@ -1000,7 +1001,7 @@ void release_console_sem(void)
> * If we try to wake up klogd while printing with the runqueue lock
> * held, this will deadlock.
> */
> - if (wake_klogd && !runqueue_is_locked())
> + if (wake_klogd)
> wake_up_klogd();
> }
I don't think we shoudl have added that hack in the first place. It solves a
problem which about three developers hit four times in five years but it
has made kernel logging less reliable for everyone.
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Steven Rostedt <srostedt@redhat.com>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
linux-ia64 <linux-ia64@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Tony Luck <tony.luck@intel.com>, Ingo Molnar <mingo@redhat.com>,
Bob Picco <bob.picco@hp.com>, Eric Whitney <eric.whitney@hp.com>
Subject: Re: 2.6.25-rc2-mm1 - boot hangs on ia64
Date: Thu, 28 Feb 2008 10:13:43 -0800 [thread overview]
Message-ID: <20080228101343.1b9548e6.akpm@linux-foundation.org> (raw)
In-Reply-To: <20080228115041.GA22082@elte.hu>
On Thu, 28 Feb 2008 12:50:41 +0100 Ingo Molnar <mingo@elte.hu> wrote:
> @@ -1000,7 +1001,7 @@ void release_console_sem(void)
> * If we try to wake up klogd while printing with the runqueue lock
> * held, this will deadlock.
> */
> - if (wake_klogd && !runqueue_is_locked())
> + if (wake_klogd)
> wake_up_klogd();
> }
I don't think we shoudl have added that hack in the first place. It solves a
problem which about three developers hit four times in five years but it
has made kernel logging less reliable for everyone.
next prev parent reply other threads:[~2008-02-28 18:13 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-25 15:56 2.6.25-rc2-mm1 - boot hangs on ia64 Lee Schermerhorn
2008-02-25 15:56 ` Lee Schermerhorn
2008-02-26 11:25 ` KOSAKI Motohiro
2008-02-26 11:25 ` KOSAKI Motohiro
2008-02-26 11:31 ` Ingo Molnar
2008-02-26 11:31 ` Ingo Molnar
2008-02-27 1:42 ` KOSAKI Motohiro
2008-02-27 1:42 ` KOSAKI Motohiro
2008-02-27 7:11 ` Ingo Molnar
2008-02-27 7:11 ` Ingo Molnar
2008-02-28 10:38 ` KOSAKI Motohiro
2008-02-28 10:38 ` KOSAKI Motohiro
2008-02-28 11:50 ` Ingo Molnar
2008-02-28 11:50 ` Ingo Molnar
2008-02-28 12:13 ` KOSAKI Motohiro
2008-02-28 12:13 ` KOSAKI Motohiro
2008-02-28 18:13 ` Andrew Morton [this message]
2008-02-28 18:13 ` Andrew Morton
2008-02-28 19:12 ` Ingo Molnar
2008-02-28 19:12 ` Ingo Molnar
2008-02-28 19:24 ` Andrew Morton
2008-02-28 19:24 ` Andrew Morton
2008-02-28 19:32 ` Ingo Molnar
2008-02-28 19:32 ` Ingo Molnar
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