From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
To: Maciej Marcin Piechotka <uzytkownik2@gmail.com>
Cc: linux-mm@kvack.org,
Linux PM mailing list <linux-pm@vger.kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>, Tejun Heo <tj@kernel.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: khugepaged cannot be freezed on 3.2-rc1
Date: Mon, 14 Nov 2011 11:10:03 +0530 [thread overview]
Message-ID: <4EC0A9B3.7020201@linux.vnet.ibm.com> (raw)
In-Reply-To: <1321195355.2020.10.camel@localhost.localdomain>
On 11/13/2011 08:12 PM, Maciej Marcin Piechotka wrote:
> I am sorry if I've sent to wrong address. It seems that bug reporting
> resources - bugzilla & "Reporting bugs for the Linux kernel" page - are
> (still?) down. I followed the latter from web archive).
>
Adding linux-pm mailing list to CC.
Andrea Arcangeli has written a patch to solve khugepaged freezing issue.
https://lkml.org/lkml/2011/11/9/312
Can you check if that patch solves the issue for you too?
Thanks,
Srivatsa S. Bhat
> When I try to suspend the computer the khugepaged refuses to be
> suspended:
>
> [10531.788922] PM: Syncing filesystems ... done.
> [10532.617226] Freezing user space processes ... (elapsed 0.01 seconds)
> done.
> [10532.629073] Freezing remaining freezable tasks ...
> [10552.638137] Freezing of tasks failed after 20.00 seconds (1 tasks
> refusing to freeze, wq_busy=0):
> [10552.638155] khugepaged R running task 0 21 2
> 0x00800000
> [10552.638159] ffffea000072c740 000000000000ce01 ffffffff81093f56
> ffffffff8166f680
> [10552.638163] ffffffff8102bbd0 0000000000000001 ffffffff8102bc65
> ffffea000072c140
> [10552.638166] ffffea000072c1c0 ffffea000072c180 ffffffff8108cbc1
> ffffea000032b700
> [10552.638170] Call Trace:
> [10552.638177] [<ffffffff81093f56>] ? vma_prio_tree_next+0x3c/0xd5
> [10552.638181] [<ffffffff810a2798>] ? try_to_unmap_file+0x4a7/0x4bd
> [10552.638184] [<ffffffff8108cbc1>] ? ____pagevec_lru_add_fn+0x58/0x9a
> [10552.638188] [<ffffffff810ad11d>] ? compaction_alloc+0x132/0x24f
> [10552.638191] [<ffffffff810b26f8>] ? migrate_pages+0xa6/0x335
> [10552.638194] [<ffffffff810acfeb>] ? pfn_valid.part.3+0x32/0x32
> [10552.638197] [<ffffffff810ad6b2>] ? compact_zone+0x3f4/0x5c3
> [10552.638200] [<ffffffff810ad9a2>] ? try_to_compact_pages+0x121/0x17e
> [10552.638203] [<ffffffff8108a2f1>] ? __alloc_pages_direct_compact
> +0xaa/0x197
> [10552.638206] [<ffffffff8108aa44>] ? __alloc_pages_nodemask
> +0x666/0x6c7
> [10552.638210] [<ffffffff8102bbd0>] ? get_parent_ip+0x9/0x1b
> [10552.638214] [<ffffffff81348964>] ? _raw_spin_lock_irqsave+0x13/0x34
> [10552.638217] [<ffffffff810b2e12>] ? khugepaged_alloc_hugepage
> +0x4c/0xdb
> [10552.638220] [<ffffffff81047ab9>] ? add_wait_queue+0x3c/0x3c
> [10552.638222] [<ffffffff810b33fd>] ? khugepaged+0x7c/0xe04
> [10552.638225] [<ffffffff81047ab9>] ? add_wait_queue+0x3c/0x3c
> [10552.638228] [<ffffffff810b3381>] ? add_mm_counter.constprop.50
> +0x9/0x9
> [10552.638230] [<ffffffff810474ee>] ? kthread+0x76/0x7e
> [10552.638233] [<ffffffff8134b274>] ? kernel_thread_helper+0x4/0x10
> [10552.638236] [<ffffffff81047478>] ? kthread_worker_fn+0x139/0x139
> [10552.638238] [<ffffffff8134b270>] ? gs_change+0xb/0xb
> [10552.638347]
> [10552.638348] Restarting tasks ... done.
>
> Regards
>
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next prev parent reply other threads:[~2011-11-14 5:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-13 14:42 khugepaged cannot be freezed on 3.2-rc1 Maciej Marcin Piechotka
2011-11-14 5:40 ` Srivatsa S. Bhat [this message]
2011-11-15 13:35 ` Maciej Marcin Piechotka
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