Messages in this thread | | | Date | Sat, 12 Nov 2011 10:48:59 +0300 | From | Sergei Trofimovich <> | Subject | khugepaged blocks suspend2ram (3.2.0-rc1-00252-g8f042aa) |
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$ cat /sys/kernel/mm/transparent_hugepage/enabled [always] madvise never
$ echo mem > /sys/power/state
[ 4036.239222] PM: Syncing filesystems ... done. [ 4040.198755] PM: Preparing system for mem sleep [ 4040.625898] Freezing user space processes ... (elapsed 0.01 seconds) done. [ 4040.637103] Freezing remaining freezable tasks ... [ 4060.646142] Freezing of tasks failed after 20.00 seconds (1 tasks refusing to freeze, wq_busy=0): [ 4060.646180] khugepaged S 0000000000000000 0 514 2 0x00800000 [ 4060.646194] ffff88007b231c70 0000000000000046 ffff88007b231c00 ffffffff00000000 [ 4060.646209] ffff88007bb40000 0000000000010ac0 ffff88007b231fd8 ffff88007b230000 [ 4060.646222] 0000000000010ac0 0000000000004000 ffff88007b231fd8 0000000000010ac0 [ 4060.646235] Call Trace: [ 4060.646254] [<ffffffff810af8b1>] ? try_to_free_pages+0x71/0x80 [ 4060.646265] [<ffffffff8103eaf1>] ? get_parent_ip+0x11/0x50 [ 4060.646275] [<ffffffff8103ec9d>] ? add_preempt_count+0x9d/0xd0 [ 4060.646286] [<ffffffff81432f3a>] schedule+0x3a/0x50 [ 4060.646294] [<ffffffff81433408>] schedule_timeout+0x158/0x230 [ 4060.646304] [<ffffffff81052db0>] ? init_timer_deferrable_key+0x20/0x20 [ 4060.646314] [<ffffffff81433539>] schedule_timeout_interruptible+0x19/0x20 [ 4060.646324] [<ffffffff810de107>] khugepaged_alloc_hugepage+0xc7/0xf0 [ 4060.646334] [<ffffffff81063700>] ? wake_up_bit+0x40/0x40 [ 4060.646344] [<ffffffff814351f2>] ? _raw_spin_unlock_irqrestore+0x12/0x40 [ 4060.646353] [<ffffffff810de5ad>] khugepaged+0x9d/0x1240 [ 4060.646364] [<ffffffff81063700>] ? wake_up_bit+0x40/0x40 [ 4060.646372] [<ffffffff810de510>] ? prepare_pmd_huge_pte.clone.29+0x60/0x60 [ 4060.646382] [<ffffffff81063266>] kthread+0x96/0xa0 [ 4060.646392] [<ffffffff81436f54>] kernel_thread_helper+0x4/0x10 [ 4060.646403] [<ffffffff810631d0>] ? kthread_worker_fn+0x190/0x190 [ 4060.646412] [<ffffffff81436f50>] ? gs_change+0xb/0xb [ 4060.646521] [ 4060.646525] Restarting tasks ... done. [ 4060.660646] video LNXVIDEO:00: Restoring backlight state
$ echo never > /sys/kernel/mm/transparent_hugepage/enabled $ cat /sys/kernel/mm/transparent_hugepage/enabled always madvise [never]
$ echo mem > /sys/power/state suspended/resumed fine
$ uname -a Linux sf 3.2.0-rc1-00252-g8f042aa #159 SMP PREEMPT Sat Nov 12 09:28:53 FET 2011 x86_64 Intel(R) Core(TM)2 Duo CPU U7600 @ 1.20GHz GenuineIntel GNU/Linux
Tried to reproduce 2 times. Both are successful
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Sergei [unhandled content-type:application/pgp-signature] | |