From: Steven Rostedt <rostedt@goodmis.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01
Date: Mon, 01 Aug 2005 14:22:44 -0400 [thread overview]
Message-ID: <1122920564.6759.15.camel@localhost.localdomain> (raw)
In-Reply-To: <20050730160345.GA3584@elte.hu>
Ingo,
What's with the "BUG: possible soft lockup detected on CPU..."? I'm
getting a bunch of them from the IDE interrupt. It's not locking up,
but it does things that probably do take some time. Is this really
necessary? Here's an example dump:
-- Steve
Note: I added the curr=%s:%d,current->comm,current->pid just to see who
was at fault.
BUG: possible soft lockup detected on CPU#0! 578977-577975(578975)
curr=IRQ 14:713
[<c010410f>] dump_stack+0x1f/0x30 (20)
[<c01441e2>] softlockup_tick+0x172/0x1a0 (44)
[<c0125d32>] update_process_times+0x62/0x140 (28)
[<c010861d>] timer_interrupt+0x4d/0x100 (20)
[<c014450f>] handle_IRQ_event+0x6f/0x120 (48)
[<c014469c>] __do_IRQ+0xdc/0x1a0 (48)
[<c0105abe>] do_IRQ+0x4e/0x90 (28)
[<c0103b63>] common_interrupt+0x1f/0x24 (64)
[<c02bddbe>] ata_input_data+0xbe/0xd0 (36)
[<c02c29e1>] taskfile_input_data+0x31/0x60 (32)
[<c02c3178>] ide_pio_sector+0xc8/0xf0 (36)
[<c02c31f0>] ide_pio_multi+0x50/0x70 (28)
[<c02c344e>] task_in_intr+0xfe/0x120 (36)
[<c02bd450>] ide_intr+0x80/0x170 (36)
[<c014450f>] handle_IRQ_event+0x6f/0x120 (48)
[<c0144e5d>] do_hardirq+0x6d/0x150 (40)
[<c0144fa9>] do_irqd+0x69/0xa0 (28)
[<c013255e>] kthread+0xae/0xc0 (44)
[<c01011ed>] kernel_thread_helper+0x5/0x18 (1052794908)
---------------------------
| preempt count: 20010003 ]
| 3-level deep critical section nesting:
----------------------------------------
.. [<c013d49a>] .... add_preempt_count+0x1a/0x20
.....[<c01085ec>] .. ( <= timer_interrupt+0x1c/0x100)
.. [<c013d49a>] .... add_preempt_count+0x1a/0x20
.....[<c0144199>] .. ( <= softlockup_tick+0x129/0x1a0)
.. [<c013d49a>] .... add_preempt_count+0x1a/0x20
.....[<c013e727>] .. ( <= print_traces+0x17/0x50)
------------------------------
| showing all locks held by: | (IRQ 14/713 [c13e2d10, 53]):
------------------------------
next prev parent reply other threads:[~2005-08-01 18:28 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-30 16:03 [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01 Ingo Molnar
2005-07-30 20:47 ` Peter Zijlstra
2005-07-30 20:52 ` Ingo Molnar
2005-07-31 4:47 ` Lee Revell
2005-07-31 6:38 ` Ingo Molnar
2005-08-01 4:45 ` Lee Revell
2005-08-01 21:08 ` Ingo Molnar
2005-08-01 21:12 ` Ingo Molnar
2005-08-02 13:56 ` Steven Rostedt
2005-08-02 14:05 ` Lee Revell
2005-08-02 14:20 ` Steven Rostedt
2005-08-02 15:37 ` 2.6.13-rc3 -> sluggish PS2 keyboard (was Re: [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01) Lee Revell
2005-08-02 15:44 ` Vojtech Pavlik
2005-08-02 15:46 ` Lee Revell
2005-08-02 15:47 ` Lee Revell
2005-08-02 15:53 ` Steven Rostedt
2005-08-02 15:55 ` Vojtech Pavlik
2005-08-02 15:55 ` Dmitry Torokhov
2005-08-02 15:38 ` [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01 Lee Revell
2005-07-31 8:03 ` Peter Zijlstra
2005-07-31 10:44 ` Ingo Molnar
2005-07-31 15:56 ` [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-05 Gene Heskett
2005-08-01 18:22 ` Steven Rostedt [this message]
2005-08-01 19:49 ` [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01 Steven Rostedt
2005-08-01 20:52 ` Ingo Molnar
2005-08-01 21:09 ` Daniel Walker
2005-08-01 21:15 ` Ingo Molnar
2005-08-02 0:43 ` Steven Rostedt
2005-08-01 21:15 ` Steven Rostedt
2005-08-01 21:23 ` Ingo Molnar
2005-08-01 21:20 ` Daniel Walker
2005-08-02 0:53 ` Steven Rostedt
2005-08-02 10:19 ` Ingo Molnar
2005-08-02 19:45 ` Steven Rostedt
2005-08-02 19:56 ` Steven Rostedt
2005-08-02 23:38 ` Daniel Walker
2005-08-03 0:00 ` Steven Rostedt
2005-08-03 1:12 ` George Anzinger
2005-08-03 1:48 ` Keith Owens
2005-08-03 2:12 ` George Anzinger
2005-08-03 2:25 ` Daniel Walker
2005-08-03 2:42 ` Steven Rostedt
2005-08-03 2:58 ` Daniel Walker
2005-08-03 10:30 ` Steven Rostedt
2005-08-03 15:10 ` Daniel Walker
2005-08-03 10:37 ` [Question] arch-independent way to differentiate between user and kernel Steven Rostedt
2005-08-03 10:48 ` Ingo Molnar
2005-08-03 12:18 ` Steven Rostedt
2005-08-03 10:56 ` [Question] arch-independent way to differentiate between user andkernel linux-os (Dick Johnson)
2005-08-03 11:44 ` Steven Rostedt
2005-08-03 12:04 ` Ingo Molnar
2005-08-03 12:30 ` Steven Rostedt
2005-08-03 14:50 ` [patch] Real-Time Preemption, -RT-2.6.13-rc4-V0.7.52-01 Steven Rostedt
2005-08-03 15:15 ` Steven Rostedt
2005-08-03 15:57 ` Steven Rostedt
2005-08-03 16:44 ` Steven Rostedt
[not found] ` <20050812125844.GA13357@elte.hu>
2005-08-26 4:24 ` Steven Rostedt
2005-08-26 6:08 ` Ingo Molnar
2005-08-26 11:20 ` Steven Rostedt
2005-08-30 10:58 ` Stephen C. Tweedie
2005-08-30 11:14 ` Ingo Molnar
2005-08-30 11:00 ` Stephen C. Tweedie
2005-08-02 3:55 ` Steven Rostedt
2005-08-02 4:07 ` Daniel Walker
2005-08-02 14:53 ` Steven Rostedt
2005-08-04 12:20 ` Andrzej Nowak
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