BUG: scheduling while atomic in acpi_ps_complete_op

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Looks like 8bd108d14604d9c95 added ACPI_PREEMPTION_POINT() in
acpi_ps_complete_op().  But now on boot in linux-next I get streams of
BUG() like below (always seems to be with swapper)

This is a linux-next kernel from Aug 21 on vmware server 2.0.

-Eric

[    4.241159] BUG: scheduling while atomic: swapper/0/0x10000002
[    4.242308] no locks held by swapper/0.
[    4.243011] Modules linked in:
[    4.245012] Pid: 0, comm: swapper Not tainted 2.6.31-rc6-next-20090821 #45
[    4.246018] Call Trace:
[    4.247015]  [<ffffffff81058635>] __schedule_bug+0xa5/0xb0
[    4.248018]  [<ffffffff8152f0e5>] thread_return+0x794/0x93f
[    4.249015]  [<ffffffff812d77da>] ? acpi_os_release_object+0x1c/0x34
[    4.250020]  [<ffffffff815334e0>] ? error_exit+0x30/0xb0
[    4.251014]  [<ffffffff812d77da>] ? acpi_os_release_object+0x1c/0x34
[    4.252014]  [<ffffffff81061f66>] __cond_resched+0x26/0x50
[    4.253015]  [<ffffffff8152f42a>] _cond_resched+0x4a/0x60
[    4.254020]  [<ffffffff812fb4d1>] acpi_ps_complete_op+0x239/0x25b
[    4.255014]  [<ffffffff812fbbc6>] acpi_ps_parse_loop+0x6d3/0x89d
[    4.256014]  [<ffffffff812fad3b>] acpi_ps_parse_aml+0xab/0x32d
[    4.257014]  [<ffffffff812e8d5a>] ? acpi_ds_init_aml_walk+0x10f/0x12e
[    4.258020]  [<ffffffff812f9989>] acpi_ns_one_complete_parse+0xf9/0x128
[    4.259014]  [<ffffffff81802140>] ? early_idt_handler+0x0/0x71
[    4.260014]  [<ffffffff812f99e7>] acpi_ns_parse_table+0x2f/0x60
[    4.261014]  [<ffffffff812f6339>] acpi_ns_load_table+0x59/0xb8
[    4.262021]  [<ffffffff812fe60d>] acpi_load_tables+0x80/0x161
[    4.263014]  [<ffffffff8183eef0>] acpi_early_init+0x71/0x11d
[    4.264015]  [<ffffffff81802f6a>] start_kernel+0x39a/0x4a0
[    4.265014]  [<ffffffff818022e1>] x86_64_start_reservations+0xc1/0x100
[    4.266020]  [<ffffffff81802428>] x86_64_start_kernel+0x108/0x150


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