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SubjectRe: 2.5.63-mm1
Date
On February 27, 2003 05:59 am, Andrew Morton wrote:
> . Tons of changes to the anticipatory scheduler. It may not be working
> very well at present. Please use "elevator=deadline" if it causes
> problems.

The anticipatory scheduler hangs here at the same place it did in 62-mm2,
cfq continues to work fine. A sysrq+T of the hang follows:

Hope this helps,
Ed Tomlinson

SysRq : Show State

free sibling
task PC stack pid father child younger older
swapper D DFF8FB20 11876 1 0 2 (L-TLB)
Call Trace:
[<c01143aa>] io_schedule+0xe/0x18
[<c012a105>] __lock_page+0x8d/0xac
[<c0114ba8>] autoremove_wake_function+0x0/0x38
[<c0114ba8>] autoremove_wake_function+0x0/0x38
[<c012a58e>] do_generic_mapping_read+0x13a/0x340
[<c012aa5a>] __generic_file_aio_read+0x1c6/0x1e4
[<c012a794>] file_read_actor+0x0/0x100
[<c012ab3f>] generic_file_read+0x7f/0x9c
[<c015400c>] dput+0x1c/0x1a0
[<c015400c>] dput+0x1c/0x1a0
[<c012ff37>] kmem_cache_alloc+0x23/0x60
[<c0140e57>] vfs_read+0xab/0x150
[<c01498c4>] kernel_read+0x3c/0x48
[<c0161f82>] load_elf_binary+0x2f2/0xbbc
[<c012ab3f>] generic_file_read+0x7f/0x9c
[<c012f91c>] cache_init_objs+0x34/0x60
[<c012d2af>] buffered_rmqueue+0xfb/0x108
[<c012d33c>] __alloc_pages+0x80/0x264
[<c014a4ad>] search_binary_handler+0xad/0x23c
[<c0161c90>] load_elf_binary+0x0/0xbbc
[<c014a786>] do_execve+0x14a/0x1a8
[<c0107750>] sys_execve+0x2c/0x60
[<c0108c47>] syscall_call+0x7/0xb
[<c0105175>] init+0x109/0x174
[<c010506c>] init+0x0/0x174
[<c0107019>] kernel_thread_helper+0x5/0xc

ksoftirqd/0 S DFF8A000 4294963836 2 1 3 (L-TLB)
Call Trace:
[<c011a1fc>] ksoftirqd+0x24/0xa4
[<c011a23e>] ksoftirqd+0x66/0xa4
[<c011a1d8>] ksoftirqd+0x0/0xa4
[<c0107019>] kernel_thread_helper+0x5/0xc

events/0 D DFF89ED4 4294953708 3 1 12 4 2 (L-TLB)
Call Trace:
[<c0113985>] wait_for_completion+0x9d/0xe0
[<c0113788>] default_wake_function+0x0/0x18
[<c0113788>] default_wake_function+0x0/0x18
[<c0116363>] do_fork+0x113/0x14c
[<c010708e>] kernel_thread+0x6e/0x84
[<c0122b50>] __call_usermodehelper+0x0/0x58
[<c0122a70>] ____call_usermodehelper+0x0/0x94
[<c0107014>] kernel_thread_helper+0x0/0xc
[<c0122b80>] __call_usermodehelper+0x30/0x58
[<c0122a70>] ____call_usermodehelper+0x0/0x94
[<c012304f>] worker_thread+0x1a3/0x274
[<c0122eac>] worker_thread+0x0/0x274
[<c0122b50>] __call_usermodehelper+0x0/0x58
[<c0113788>] default_wake_function+0x0/0x18
[<c0113788>] default_wake_function+0x0/0x18
[<c0107019>] kernel_thread_helper+0x5/0xc

khubd D DFD61D94 4292690652 4 1 5 3 (L-TLB)
Call Trace:
[<c01136a0>] do_schedule+0x2a0/0x348
[<c0113985>] wait_for_completion+0x9d/0xe0
[<c0113788>] default_wake_function+0x0/0x18
[<c0113788>] default_wake_function+0x0/0x18
[<c0122cb2>] call_usermodehelper+0x10a/0x118
[<c01f44d8>] usb_hotplug+0x0/0x1c4
[<c0122b50>] __call_usermodehelper+0x0/0x58
[<c0122b50>] __call_usermodehelper+0x0/0x58
[<c01b5a42>] do_hotplug+0x1c2/0x1ec
[<c01b5a91>] dev_hotplug+0x25/0x30
[<c01f44d8>] usb_hotplug+0x0/0x1c4
[<c01b3d9a>] device_add+0x112/0x148
[<c01f4ef6>] usb_new_device+0x322/0x480
[<c0117086>] printk+0x122/0x148
[<c01f6a9f>] usb_hub_port_connect_change+0x233/0x2c4
[<c01f6c69>] usb_hub_events+0x139/0x2c8
[<c01f6e25>] usb_hub_thread+0x2d/0xd4
[<c01f6df8>] usb_hub_thread+0x0/0xd4
[<c0113788>] default_wake_function+0x0/0x18
[<c0107019>] kernel_thread_helper+0x5/0xc

pdflush S DFD2FFD4 4292485228 5 1 6 4 (L-TLB)
Call Trace:
[<c012e7e5>] __pdflush+0x95/0x1b0
[<c012e900>] pdflush+0x0/0x14
[<c012e90f>] pdflush+0xf/0x14
[<c0107019>] kernel_thread_helper+0x5/0xc

pdflush S DFD2DFD4 14388 6 1 7 5 (L-TLB)
Call Trace:
[<c012e7e5>] __pdflush+0x95/0x1b0
[<c012e900>] pdflush+0x0/0x14
[<c012e90f>] pdflush+0xf/0x14
[<c0107019>] kernel_thread_helper+0x5/0xc

kswapd0 S DFD29F44 4294958912 7 1 8 6 (L-TLB)
Call Trace:
[<c01328fb>] kswapd+0xcb/0xf0
[<c0132830>] kswapd+0x0/0xf0
[<c0109d26>] math_state_restore+0x2a/0x3c
[<c0108f05>] device_not_available+0x25/0x2a
[<c010e3f5>] save_init_fpu+0x1d/0x3c
[<c0113770>] preempt_schedule+0x28/0x40
[<c0112eb3>] schedule_tail+0x2f/0x94
[<c0108b06>] ret_from_fork+0x6/0x20
[<c0114ba8>] autoremove_wake_function+0x0/0x38
[<c0114ba8>] autoremove_wake_function+0x0/0x38
[<c0107019>] kernel_thread_helper+0x5/0xc

aio/0 S DFFE8EA0 4294952400 8 1 9 7 (L-TLB)
Call Trace:
[<c0122fa8>] worker_thread+0xfc/0x274
[<c0122eac>] worker_thread+0x0/0x274
[<c0113788>] default_wake_function+0x0/0x18
[<c0113788>] default_wake_function+0x0/0x18
[<c0107019>] kernel_thread_helper+0x5/0xc

kpnpbiosd Z DFFEE800 4294880232 9 1 10 8 (L-TLB)
Call Trace:
[<c0118b99>] do_exit+0x41d/0x428
[<c01aca44>] pnp_dock_thread+0x0/0xf4
[<c0118bbb>] complete_and_exit+0x17/0x18
[<c01acadc>] pnp_dock_thread+0x98/0xf4
[<c01aca44>] pnp_dock_thread+0x0/0xf4
[<c0107019>] kernel_thread_helper+0x5/0xc

kseriod S DFC44000 4294030016 10 1 11 9 (L-TLB)
Call Trace:
[<c02073e7>] serio_thread+0x9f/0x12c
[<c0207348>] serio_thread+0x0/0x12c
[<c0113788>] default_wake_function+0x0/0x18
[<c0107019>] kernel_thread_helper+0x5/0xc

reiserfs/0 S DFCBD460 8080 11 1 10 (L-TLB)
Call Trace:
[<c0122fa8>] worker_thread+0xfc/0x274
[<c0122eac>] worker_thread+0x0/0x274
[<c0113788>] default_wake_function+0x0/0x18
[<c0113788>] default_wake_function+0x0/0x18
[<c0107019>] kernel_thread_helper+0x5/0xc

events/0 D DFAC7A30 4294892756 12 3 (L-TLB)
Call Trace:
[<c01143aa>] io_schedule+0xe/0x18
[<c012a105>] __lock_page+0x8d/0xac
[<c0114ba8>] autoremove_wake_function+0x0/0x38
[<c0114ba8>] autoremove_wake_function+0x0/0x38
[<c012a58e>] do_generic_mapping_read+0x13a/0x340
[<c012aa5a>] __generic_file_aio_read+0x1c6/0x1e4
[<c012a794>] file_read_actor+0x0/0x100
[<c017f6b0>] reiserfs_get_block+0x0/0x11cc
[<c012ab3f>] generic_file_read+0x7f/0x9c
[<c015400c>] dput+0x1c/0x1a0
[<c015400c>] dput+0x1c/0x1a0
[<c012ff37>] kmem_cache_alloc+0x23/0x60
[<c0140e57>] vfs_read+0xab/0x150
[<c01498c4>] kernel_read+0x3c/0x48
[<c0161f82>] load_elf_binary+0x2f2/0xbbc
[<c012ab3f>] generic_file_read+0x7f/0x9c
[<c014bf83>] real_lookup+0x67/0xd0
[<c014c254>] do_lookup+0x48/0x84
[<c015400c>] dput+0x1c/0x1a0
[<c014c95a>] link_path_walk+0x6ca/0x848
[<c014a4ad>] search_binary_handler+0xad/0x23c
[<c0161c90>] load_elf_binary+0x0/0xbbc
[<c01614c1>] load_script+0x1d1/0x1e0
[<c012d2af>] buffered_rmqueue+0xfb/0x108
[<c012d33c>] __alloc_pages+0x80/0x264
[<c014a4ad>] search_binary_handler+0xad/0x23c
[<c01612f0>] load_script+0x0/0x1e0
[<c014a786>] do_execve+0x14a/0x1a8
[<c0107750>] sys_execve+0x2c/0x60
[<c0108c47>] syscall_call+0x7/0xb
[<c0122ae8>] ____call_usermodehelper+0x78/0x94
[<c0122a70>] ____call_usermodehelper+0x0/0x94
[<c0107019>] kernel_thread_helper+0x5/0xc



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