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SubjectHigh cpu temperature with 2.6.32, bisection shows commit 69d258
Hello list,

after upgrading to 2.6.32 kernel, I noticed my P3 500MHz laptop's fan
was working non-stop. Powertop showed more than 100K wakeups/s even though
cpu was idling almost 100% (no user nor system cpu usage). Further
investigation showed that this happened as soon as the "processor" module
was inserted, whence I also got a message like the following:

tsc unstable due to halts in idle
switching clocksource to acpi_pm

A workaround that currently works for me is to boot with "clocksource=pit"
parameter. FYI in 2.6.31 logs I had the same message about tsc
instability, and the final clocksource was acpi_pm too. Nevertheless
wakeups/s were much less and temperature was low.

I performed a bisection to find which commit to blame. Please look into
attached files which include dmesg output from good and bad case, and
bisection output.


What do you think?

Dimitris
Linux version 2.6.31-07222-g45d80ee (jimis@mango) (gcc version 4.4.2 20091208 (prerelease) (GCC) ) #18 SMP PREEMPT Wed Jan 6 19:01:27 EET 2010
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
NSC Geode by NSC
Cyrix CyrixInstead
Centaur CentaurHauls
Transmeta GenuineTMx86
Transmeta TransmetaCPU
UMC UMC UMC UMC
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f400 (usable)
BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e9800 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 0000000007ff0000 (usable)
BIOS-e820: 0000000007ff0000 - 0000000007fffc00 (ACPI data)
BIOS-e820: 0000000007fffc00 - 0000000008000000 (ACPI NVS)
BIOS-e820: 00000000fffe9800 - 0000000100000000 (reserved)
DMI 2.1 present.
Phoenix BIOS detected: BIOS may corrupt low RAM, working around it.
e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
last_pfn = 0x7ff0 max_arch_pfn = 0x100000
MTRR default type: uncachable
MTRR fixed ranges enabled:
00000-9FFFF write-back
A0000-BFFFF uncachable
C0000-C7FFF write-protect
C8000-DFFFF uncachable
E0000-FFFFF write-protect
MTRR variable ranges enabled:
0 base 000000000 mask FF8000000 write-back
1 disabled
2 disabled
3 disabled
4 disabled
5 disabled
6 disabled
7 disabled
PAT not supported by CPU.
Scanning 0 areas for low memory corruption
modified physical RAM map:
modified: 0000000000000000 - 0000000000010000 (reserved)
modified: 0000000000010000 - 000000000009f400 (usable)
modified: 000000000009f400 - 00000000000a0000 (reserved)
modified: 00000000000e9800 - 0000000000100000 (reserved)
modified: 0000000000100000 - 0000000007ff0000 (usable)
modified: 0000000007ff0000 - 0000000007fffc00 (ACPI data)
modified: 0000000007fffc00 - 0000000008000000 (ACPI NVS)
modified: 00000000fffe9800 - 0000000100000000 (reserved)
initial memory mapped : 0 - 01800000
init_memory_mapping: 0000000000000000-0000000007ff0000
0000000000 - 0000400000 page 4k
0000400000 - 0007c00000 page 2M
0007c00000 - 0007ff0000 page 4k
kernel direct mapping tables up to 7ff0000 @ 10000-15000
ACPI: RSDP 000f6d80 00014 (v00 PTLTD )
ACPI: RSDT 07ffd008 0002C (v01 PTLTD RSDT 00000000 LTP 00000000)
ACPI: FACP 07fffb65 00074 (v01 ASUS L8400B 00000000 PTL 000F4240)
ACPI: DSDT 07ffd034 02B31 (v01 Intel Trajan 00000000 MSFT 01000004)
ACPI: FACS 07ffffc0 00040
ACPI: BOOT 07fffbd9 00027 (v01 PTLTD $SBFTBL$ 00000000 LTP 00000001)
0MB HIGHMEM available.
127MB LOWMEM available.
mapped low ram: 0 - 07ff0000
low ram: 0 - 07ff0000
node 0 low ram: 00000000 - 07ff0000
node 0 bootmap 00011000 - 00012000
(8 early reservations) ==> bootmem [0000000000 - 0007ff0000]
#0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000]
#1 [0000001000 - 0000002000] EX TRAMPOLINE ==> [0000001000 - 0000002000]
#2 [0000006000 - 0000007000] TRAMPOLINE ==> [0000006000 - 0000007000]
#3 [0001000000 - 00014d8b14] TEXT DATA BSS ==> [0001000000 - 00014d8b14]
#4 [000009f400 - 0000100000] BIOS reserved ==> [000009f400 - 0000100000]
#5 [00014d9000 - 00014df130] BRK ==> [00014d9000 - 00014df130]
#6 [0000010000 - 0000011000] PGTABLE ==> [0000010000 - 0000011000]
#7 [0000011000 - 0000012000] BOOTMAP ==> [0000011000 - 0000012000]
Zone PFN ranges:
DMA 0x00000010 -> 0x00001000
Normal 0x00001000 -> 0x00007ff0
HighMem 0x00007ff0 -> 0x00007ff0
Movable zone start PFN for each node
early_node_map[2] active PFN ranges
0: 0x00000010 -> 0x0000009f
0: 0x00000100 -> 0x00007ff0
On node 0 totalpages: 32639
free_area_init_node: node 0, pgdat c13c13e0, node_mem_map c14e1200
DMA zone: 32 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 3951 pages, LIFO batch:0
Normal zone: 224 pages used for memmap
Normal zone: 28432 pages, LIFO batch:7
Using APIC driver default
ACPI: PM-Timer IO Port: 0x8008
SMP: Allowing 1 CPUs, 0 hotplug CPUs
Local APIC disabled by BIOS -- you can enable it with "lapic"
APIC: disable apic facility
nr_irqs_gsi: 16
PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
PM: Registered nosave memory: 00000000000a0000 - 00000000000ea000
PM: Registered nosave memory: 00000000000ea000 - 0000000000100000
Allocating PCI resources starting at 8000000 (gap: 8000000:f7fe9800)
Booting paravirtualized kernel on bare hardware
NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:1 nr_node_ids:1
PERCPU: Embedded 13 pages/cpu @c1800000 s29528 r0 d23720 u4194304
pcpu-alloc: s29528 r0 d23720 u4194304 alloc=1*4194304
pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32383
Kernel command line: root=/dev/hda2 ro init=/bin/sh
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
Initializing HighMem for node 0 (00000000:00000000)
Memory: 124200k/131008k available (2870k kernel code, 6208k reserved, 993k data, 340k init, 0k highmem)
virtual kernel memory layout:
fixmap : 0xfff1e000 - 0xfffff000 ( 900 kB)
pkmap : 0xff800000 - 0xffc00000 (4096 kB)
vmalloc : 0xc87f0000 - 0xff7fe000 ( 880 MB)
lowmem : 0xc0000000 - 0xc7ff0000 ( 127 MB)
.init : 0xc13c7000 - 0xc141c000 ( 340 kB)
.data : 0xc12cdb74 - 0xc13c6038 ( 993 kB)
.text : 0xc1000000 - 0xc12cdb74 (2870 kB)
Checking if this processor honours the WP bit even in supervisor mode...Ok.
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Hierarchical RCU implementation.
NR_IRQS:512
Console: colour VGA+ 80x25
console [tty0] enabled
Fast TSC calibration using PIT
Detected 501.039 MHz processor.
Calibrating delay loop (skipped), value calculated using timer frequency.. 1002.83 BogoMIPS (lpj=1670130)
Mount-cache hash table entries: 512
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
mce: CPU supports 5 MCE banks
Performance Events:
no APIC, boot with the "lapic" boot parameter to force-enable it.
no hardware sampling interrupt available.
p6 PMU driver.
... version: 0
... bit width: 32
... generic registers: 2
... value mask: 00000000ffffffff
... max period: 000000007fffffff
... fixed-purpose events: 0
... event mask: 0000000000000003
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 11k freed
ACPI: Core revision 20090521
ACPI: setting ELCR to 0200 (from 0820)
weird, boot CPU (#0) not listed by the BIOS.
SMP motherboard not detected.
Local APIC not detected. Using dummy APIC emulation.
SMP disabled
Brought up 1 CPUs
Total of 1 processors activated (1002.83 BogoMIPS).
CPU0 attaching NULL sched-domain.
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: PCI BIOS revision 2.10 entry at 0xfd9a6, last bus=1
PCI: Using configuration type 1 for base access
bio: create slab <bio-0> at 0
ACPI: EC: Enabling special treatment for EC from MSI.
ACPI: EC: Look up EC in DSDT
ACPI: Interpreter enabled
ACPI: (supports S0 S1 S3 S4 S5)
ACPI: Using PIC for interrupt routing
ACPI: EC: non-query interrupt received, switching to interrupt mode
ACPI: EC: GPE = 0x9, I/O: command/status = 0x66, data = 0x62
ACPI: EC: driver started in interrupt mode
ACPI: Power Resource [PFAN] (off)
ACPI: PCI Root Bridge [PCI0] (0000:00)
pci 0000:00:00.0: reg 10 32bit mmio pref: [0xf8000000-0xfbffffff]
pci 0000:00:06.0: reg 10 32bit mmio: [0xfedc0000-0xfedfffff]
pci 0000:00:06.0: reg 14 io port: [0xfcc0-0xfcc7]
pci 0000:00:06.0: reg 18 io port: [0xfcc8-0xfccf]
pci 0000:00:06.0: supports D2
pci 0000:00:06.0: PME# supported from D2 D3hot D3cold
pci 0000:00:06.0: PME# disabled
pci 0000:00:07.1: reg 20 io port: [0xfcd0-0xfcdf]
pci 0000:00:07.2: reg 20 io port: [0xfce0-0xfcff]
pci 0000:00:07.3: quirk: region 8000-803f claimed by PIIX4 ACPI
pci 0000:00:07.3: quirk: region 2180-218f claimed by PIIX4 SMB
pci 0000:00:0a.0: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:00:0a.0: supports D1 D2
pci 0000:00:0a.0: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:00:0a.0: PME# disabled
pci 0000:00:0a.1: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:00:0a.1: supports D1 D2
pci 0000:00:0a.1: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:00:0a.1: PME# disabled
pci 0000:01:00.0: reg 10 32bit mmio: [0xf0000000-0xf7ffffff]
pci 0000:01:00.0: reg 30 32bit mmio pref: [0x000000-0x00ffff]
pci 0000:01:00.0: supports D1 D2
pci 0000:00:01.0: bridge 32bit mmio: [0xf0000000-0xf7ffffff]
pci_bus 0000:00: on NUMA node 0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKC] (IRQs *5 6 7 10)
ACPI: PCI Interrupt Link [LNKD] (IRQs *11)
vgaarb: device added: PCI:0000:01:00.0,decodes=io+mem,owns=io+mem,locks=none
vgaarb: loaded
PCI: Using ACPI for IRQ routing
Switching to clocksource tsc
pnp: PnP ACPI init
ACPI: bus type pnp registered
pnp: PnP ACPI: found 13 devices
ACPI: ACPI bus type pnp unregistered
system 00:00: iomem range 0x0-0x9ffff could not be reserved
system 00:00: iomem range 0xe0000-0xfffff could not be reserved
system 00:00: iomem range 0x100000-0x7ffffff could not be reserved
system 00:02: ioport range 0x4d0-0x4d1 has been reserved
system 00:02: ioport range 0x398-0x399 has been reserved
system 00:02: ioport range 0x2180-0x218f has been reserved
system 00:02: ioport range 0x8000-0x803f has been reserved
system 00:02: ioport range 0x3800-0x383f has been reserved
system 00:02: iomem range 0xfff80000-0xffffffff could not be reserved
pci 0000:00:01.0: PCI bridge, secondary bus 0000:01
pci 0000:00:01.0: IO window: disabled
pci 0000:00:01.0: MEM window: 0xf0000000-0xf7ffffff
pci 0000:00:01.0: PREFETCH window: 0x18000000-0x180fffff
pci 0000:00:0a.0: CardBus bridge, secondary bus 0000:02
pci 0000:00:0a.0: IO window: 0x001000-0x0010ff
pci 0000:00:0a.0: IO window: 0x001400-0x0014ff
pci 0000:00:0a.0: PREFETCH window: 0x8000000-0xbffffff
pci 0000:00:0a.0: MEM window: 0xc000000-0xfffffff
pci 0000:00:0a.1: CardBus bridge, secondary bus 0000:06
pci 0000:00:0a.1: IO window: 0x001800-0x0018ff
pci 0000:00:0a.1: IO window: 0x001c00-0x001cff
pci 0000:00:0a.1: PREFETCH window: 0x10000000-0x13ffffff
pci 0000:00:0a.1: MEM window: 0x14000000-0x17ffffff
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
pci 0000:00:0a.0: PCI INT A -> Link[LNKA] -> GSI 11 (level, low) -> IRQ 11
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11
pci 0000:00:0a.1: PCI INT B -> Link[LNKB] -> GSI 11 (level, low) -> IRQ 11
pci_bus 0000:00: resource 0 io: [0x00-0xffff]
pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffff]
pci_bus 0000:01: resource 1 mem: [0xf0000000-0xf7ffffff]
pci_bus 0000:01: resource 2 pref mem [0x18000000-0x180fffff]
pci_bus 0000:02: resource 0 io: [0x1000-0x10ff]
pci_bus 0000:02: resource 1 io: [0x1400-0x14ff]
pci_bus 0000:02: resource 2 pref mem [0x8000000-0xbffffff]
pci_bus 0000:02: resource 3 mem: [0xc000000-0xfffffff]
pci_bus 0000:06: resource 0 io: [0x1800-0x18ff]
pci_bus 0000:06: resource 1 io: [0x1c00-0x1cff]
pci_bus 0000:06: resource 2 pref mem [0x10000000-0x13ffffff]
pci_bus 0000:06: resource 3 mem: [0x14000000-0x17ffffff]
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
NET: Registered protocol family 1
Simple Boot Flag at 0x37 set to 0x1
Scanning for low memory corruption every 60 seconds
msgmni has been set to 242
alg: No test for stdrng (krng)
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered (default)
pci 0000:00:00.0: Limiting direct PCI/PCI transfers
pci 0000:01:00.0: Boot video device
ACPI: AC Adapter [AC] (on-line)
input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
ACPI: Power Button [PWRF]
input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input1
ACPI: Lid Switch [LID]
fan PNP0C0B:00: registered as cooling_device0
ACPI: Fan [FAN] (off)
Marking TSC unstable due to TSC halts in idle
ACPI: CPU0 (power states: C1[C1] C2[C2])
processor LNXCPU:00: registered as cooling_device1
ACPI: Processor [CPU0] (supports 4 throttling states)
Switching to clocksource acpi_pm
Switched to high resolution mode on CPU 0
thermal LNXTHERM:01: registered as thermal_zone0
ACPI: Thermal Zone [THRM] (64 C)
Linux agpgart interface v0.103
agpgart-intel 0000:00:00.0: Intel 440BX Chipset
agpgart-intel 0000:00:00.0: AGP aperture is 64M @ 0xf8000000
Hangcheck: starting hangcheck timer 0.9.0 (tick is 180 seconds, margin is 60 seconds).
Hangcheck: Using get_cycles().
Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a NS16550A
00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
loop: module loaded
Uniform Multi-Platform E-IDE driver
piix 0000:00:07.1: IDE controller (0x8086:0x7111 rev 0x01)
piix 0000:00:07.1: IDE port disabled
piix 0000:00:07.1: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xfcd0-0xfcd7
Probing IDE interface ide0...
ACPI: Battery Slot [BAT0] (battery absent)
hda: IBM-DARA-212000, ATA DISK drive
hdb: TOSHIBA DVD-ROM SD-C2302, ATAPI CD/DVD-ROM drive
hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4
hda: UDMA/33 mode selected
hdb: host max PIO4 wanted PIO255(auto-tune) selected PIO4
hdb: UDMA/33 mode selected
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide-gd driver 1.18
hda: max request size: 128KiB
hda: 23579136 sectors (12072 MB) w/418KiB Cache, CHS=23392/16/63
hda: cache flushes not supported
hda: hda1 hda2
ide-cd driver 5.00
ide-cd: hdb: ATAPI 24X DVD-ROM drive, 128kB Cache
Uniform CD-ROM driver Revision: 3.20
PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:MOUE] at 0x60,0x64 irq 1,12
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
mice: PS/2 mouse device common for all mice
cpuidle: using governor ladder
cpuidle: using governor menu
TCP cubic registered
NET: Registered protocol family 17
Using IPI No-Shortcut mode
input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2
Synaptics Touchpad, model: 1, fw: 4.6, id: 0x135ea1, caps: 0x804713/0x0
input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input3
EXT3-fs: hda2: couldn't mount because of unsupported optional features (240).
EXT2-fs: hda2: couldn't mount because of unsupported optional features (240).
EXT4-fs (hda2): barriers enabled
EXT4-fs (hda2): delayed allocation enabled
EXT4-fs: file extents enabled
EXT4-fs: mballoc enabled
EXT4-fs (hda2): mounted filesystem with ordered data mode
VFS: Mounted root (ext4 filesystem) readonly on device 3:2.
Freeing unused kernel memory: 340k freed
kjournald2 starting: pid 26, dev hda2:8, commit interval 5 seconds
Write protecting the kernel text: 2872k
Write protecting the kernel read-only data: 740k
EXT4-fs (hda2): internal journal on hda2:8
JBD: barrier-based sync failed on hda2:8 - disabling barriers
Linux version 2.6.31-07223-g69d2587 (jimis@mango) (gcc version 4.4.2 20091208 (prerelease) (GCC) ) #17 SMP PREEMPT Wed Jan 6 18:39:29 EET 2010
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
NSC Geode by NSC
Cyrix CyrixInstead
Centaur CentaurHauls
Transmeta GenuineTMx86
Transmeta TransmetaCPU
UMC UMC UMC UMC
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f400 (usable)
BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e9800 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 0000000007ff0000 (usable)
BIOS-e820: 0000000007ff0000 - 0000000007fffc00 (ACPI data)
BIOS-e820: 0000000007fffc00 - 0000000008000000 (ACPI NVS)
BIOS-e820: 00000000fffe9800 - 0000000100000000 (reserved)
DMI 2.1 present.
Phoenix BIOS detected: BIOS may corrupt low RAM, working around it.
e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
last_pfn = 0x7ff0 max_arch_pfn = 0x100000
MTRR default type: uncachable
MTRR fixed ranges enabled:
00000-9FFFF write-back
A0000-BFFFF uncachable
C0000-C7FFF write-protect
C8000-DFFFF uncachable
E0000-FFFFF write-protect
MTRR variable ranges enabled:
0 base 000000000 mask FF8000000 write-back
1 disabled
2 disabled
3 disabled
4 disabled
5 disabled
6 disabled
7 disabled
PAT not supported by CPU.
Scanning 0 areas for low memory corruption
modified physical RAM map:
modified: 0000000000000000 - 0000000000010000 (reserved)
modified: 0000000000010000 - 000000000009f400 (usable)
modified: 000000000009f400 - 00000000000a0000 (reserved)
modified: 00000000000e9800 - 0000000000100000 (reserved)
modified: 0000000000100000 - 0000000007ff0000 (usable)
modified: 0000000007ff0000 - 0000000007fffc00 (ACPI data)
modified: 0000000007fffc00 - 0000000008000000 (ACPI NVS)
modified: 00000000fffe9800 - 0000000100000000 (reserved)
initial memory mapped : 0 - 01800000
init_memory_mapping: 0000000000000000-0000000007ff0000
0000000000 - 0000400000 page 4k
0000400000 - 0007c00000 page 2M
0007c00000 - 0007ff0000 page 4k
kernel direct mapping tables up to 7ff0000 @ 10000-15000
ACPI: RSDP 000f6d80 00014 (v00 PTLTD )
ACPI: RSDT 07ffd008 0002C (v01 PTLTD RSDT 00000000 LTP 00000000)
ACPI: FACP 07fffb65 00074 (v01 ASUS L8400B 00000000 PTL 000F4240)
ACPI: DSDT 07ffd034 02B31 (v01 Intel Trajan 00000000 MSFT 01000004)
ACPI: FACS 07ffffc0 00040
ACPI: BOOT 07fffbd9 00027 (v01 PTLTD $SBFTBL$ 00000000 LTP 00000001)
0MB HIGHMEM available.
127MB LOWMEM available.
mapped low ram: 0 - 07ff0000
low ram: 0 - 07ff0000
node 0 low ram: 00000000 - 07ff0000
node 0 bootmap 00011000 - 00012000
(8 early reservations) ==> bootmem [0000000000 - 0007ff0000]
#0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000]
#1 [0000001000 - 0000002000] EX TRAMPOLINE ==> [0000001000 - 0000002000]
#2 [0000006000 - 0000007000] TRAMPOLINE ==> [0000006000 - 0000007000]
#3 [0001000000 - 00014d8b14] TEXT DATA BSS ==> [0001000000 - 00014d8b14]
#4 [000009f400 - 0000100000] BIOS reserved ==> [000009f400 - 0000100000]
#5 [00014d9000 - 00014df130] BRK ==> [00014d9000 - 00014df130]
#6 [0000010000 - 0000011000] PGTABLE ==> [0000010000 - 0000011000]
#7 [0000011000 - 0000012000] BOOTMAP ==> [0000011000 - 0000012000]
Zone PFN ranges:
DMA 0x00000010 -> 0x00001000
Normal 0x00001000 -> 0x00007ff0
HighMem 0x00007ff0 -> 0x00007ff0
Movable zone start PFN for each node
early_node_map[2] active PFN ranges
0: 0x00000010 -> 0x0000009f
0: 0x00000100 -> 0x00007ff0
On node 0 totalpages: 32639
free_area_init_node: node 0, pgdat c13c13e0, node_mem_map c14e1200
DMA zone: 32 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 3951 pages, LIFO batch:0
Normal zone: 224 pages used for memmap
Normal zone: 28432 pages, LIFO batch:7
Using APIC driver default
ACPI: PM-Timer IO Port: 0x8008
SMP: Allowing 1 CPUs, 0 hotplug CPUs
Local APIC disabled by BIOS -- you can enable it with "lapic"
APIC: disable apic facility
nr_irqs_gsi: 16
PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
PM: Registered nosave memory: 00000000000a0000 - 00000000000ea000
PM: Registered nosave memory: 00000000000ea000 - 0000000000100000
Allocating PCI resources starting at 8000000 (gap: 8000000:f7fe9800)
Booting paravirtualized kernel on bare hardware
NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:1 nr_node_ids:1
PERCPU: Embedded 13 pages/cpu @c1800000 s29656 r0 d23592 u4194304
pcpu-alloc: s29656 r0 d23592 u4194304 alloc=1*4194304
pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32383
Kernel command line: root=/dev/hda2 ro init=/bin/sh
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
Initializing HighMem for node 0 (00000000:00000000)
Memory: 124200k/131008k available (2871k kernel code, 6208k reserved, 992k data, 340k init, 0k highmem)
virtual kernel memory layout:
fixmap : 0xfff1e000 - 0xfffff000 ( 900 kB)
pkmap : 0xff800000 - 0xffc00000 (4096 kB)
vmalloc : 0xc87f0000 - 0xff7fe000 ( 880 MB)
lowmem : 0xc0000000 - 0xc7ff0000 ( 127 MB)
.init : 0xc13c7000 - 0xc141c000 ( 340 kB)
.data : 0xc12cdd54 - 0xc13c6038 ( 992 kB)
.text : 0xc1000000 - 0xc12cdd54 (2871 kB)
Checking if this processor honours the WP bit even in supervisor mode...Ok.
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Hierarchical RCU implementation.
NR_IRQS:512
Console: colour VGA+ 80x25
console [tty0] enabled
Fast TSC calibration using PIT
Detected 501.124 MHz processor.
Calibrating delay loop (skipped), value calculated using timer frequency.. 1002.00 BogoMIPS (lpj=1670413)
Mount-cache hash table entries: 512
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
mce: CPU supports 5 MCE banks
Performance Events:
no APIC, boot with the "lapic" boot parameter to force-enable it.
no hardware sampling interrupt available.
p6 PMU driver.
... version: 0
... bit width: 32
... generic registers: 2
... value mask: 00000000ffffffff
... max period: 000000007fffffff
... fixed-purpose events: 0
... event mask: 0000000000000003
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 11k freed
ACPI: Core revision 20090521
ACPI: setting ELCR to 0200 (from 0820)
weird, boot CPU (#0) not listed by the BIOS.
SMP motherboard not detected.
Local APIC not detected. Using dummy APIC emulation.
SMP disabled
Brought up 1 CPUs
Total of 1 processors activated (1002.00 BogoMIPS).
CPU0 attaching NULL sched-domain.
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: PCI BIOS revision 2.10 entry at 0xfd9a6, last bus=1
PCI: Using configuration type 1 for base access
bio: create slab <bio-0> at 0
ACPI: EC: Enabling special treatment for EC from MSI.
ACPI: EC: Look up EC in DSDT
ACPI: Interpreter enabled
ACPI: (supports S0 S1 S3 S4 S5)
ACPI: Using PIC for interrupt routing
ACPI: EC: non-query interrupt received, switching to interrupt mode
ACPI: EC: GPE = 0x9, I/O: command/status = 0x66, data = 0x62
ACPI: EC: driver started in interrupt mode
ACPI: Power Resource [PFAN] (off)
ACPI: PCI Root Bridge [PCI0] (0000:00)
pci 0000:00:00.0: reg 10 32bit mmio pref: [0xf8000000-0xfbffffff]
pci 0000:00:06.0: reg 10 32bit mmio: [0xfedc0000-0xfedfffff]
pci 0000:00:06.0: reg 14 io port: [0xfcc0-0xfcc7]
pci 0000:00:06.0: reg 18 io port: [0xfcc8-0xfccf]
pci 0000:00:06.0: supports D2
pci 0000:00:06.0: PME# supported from D2 D3hot D3cold
pci 0000:00:06.0: PME# disabled
pci 0000:00:07.1: reg 20 io port: [0xfcd0-0xfcdf]
pci 0000:00:07.2: reg 20 io port: [0xfce0-0xfcff]
pci 0000:00:07.3: quirk: region 8000-803f claimed by PIIX4 ACPI
pci 0000:00:07.3: quirk: region 2180-218f claimed by PIIX4 SMB
pci 0000:00:0a.0: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:00:0a.0: supports D1 D2
pci 0000:00:0a.0: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:00:0a.0: PME# disabled
pci 0000:00:0a.1: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:00:0a.1: supports D1 D2
pci 0000:00:0a.1: PME# supported from D0 D1 D2 D3hot D3cold
pci 0000:00:0a.1: PME# disabled
pci 0000:01:00.0: reg 10 32bit mmio: [0xf0000000-0xf7ffffff]
pci 0000:01:00.0: reg 30 32bit mmio pref: [0x000000-0x00ffff]
pci 0000:01:00.0: supports D1 D2
pci 0000:00:01.0: bridge 32bit mmio: [0xf0000000-0xf7ffffff]
pci_bus 0000:00: on NUMA node 0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKC] (IRQs *5 6 7 10)
ACPI: PCI Interrupt Link [LNKD] (IRQs *11)
vgaarb: device added: PCI:0000:01:00.0,decodes=io+mem,owns=io+mem,locks=none
vgaarb: loaded
PCI: Using ACPI for IRQ routing
Switching to clocksource tsc
pnp: PnP ACPI init
ACPI: bus type pnp registered
pnp: PnP ACPI: found 13 devices
ACPI: ACPI bus type pnp unregistered
system 00:00: iomem range 0x0-0x9ffff could not be reserved
system 00:00: iomem range 0xe0000-0xfffff could not be reserved
system 00:00: iomem range 0x100000-0x7ffffff could not be reserved
system 00:02: ioport range 0x4d0-0x4d1 has been reserved
system 00:02: ioport range 0x398-0x399 has been reserved
system 00:02: ioport range 0x2180-0x218f has been reserved
system 00:02: ioport range 0x8000-0x803f has been reserved
system 00:02: ioport range 0x3800-0x383f has been reserved
system 00:02: iomem range 0xfff80000-0xffffffff could not be reserved
pci 0000:00:01.0: PCI bridge, secondary bus 0000:01
pci 0000:00:01.0: IO window: disabled
pci 0000:00:01.0: MEM window: 0xf0000000-0xf7ffffff
pci 0000:00:01.0: PREFETCH window: 0x18000000-0x180fffff
pci 0000:00:0a.0: CardBus bridge, secondary bus 0000:02
pci 0000:00:0a.0: IO window: 0x001000-0x0010ff
pci 0000:00:0a.0: IO window: 0x001400-0x0014ff
pci 0000:00:0a.0: PREFETCH window: 0x8000000-0xbffffff
pci 0000:00:0a.0: MEM window: 0xc000000-0xfffffff
pci 0000:00:0a.1: CardBus bridge, secondary bus 0000:06
pci 0000:00:0a.1: IO window: 0x001800-0x0018ff
pci 0000:00:0a.1: IO window: 0x001c00-0x001cff
pci 0000:00:0a.1: PREFETCH window: 0x10000000-0x13ffffff
pci 0000:00:0a.1: MEM window: 0x14000000-0x17ffffff
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
pci 0000:00:0a.0: PCI INT A -> Link[LNKA] -> GSI 11 (level, low) -> IRQ 11
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11
pci 0000:00:0a.1: PCI INT B -> Link[LNKB] -> GSI 11 (level, low) -> IRQ 11
pci_bus 0000:00: resource 0 io: [0x00-0xffff]
pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffff]
pci_bus 0000:01: resource 1 mem: [0xf0000000-0xf7ffffff]
pci_bus 0000:01: resource 2 pref mem [0x18000000-0x180fffff]
pci_bus 0000:02: resource 0 io: [0x1000-0x10ff]
pci_bus 0000:02: resource 1 io: [0x1400-0x14ff]
pci_bus 0000:02: resource 2 pref mem [0x8000000-0xbffffff]
pci_bus 0000:02: resource 3 mem: [0xc000000-0xfffffff]
pci_bus 0000:06: resource 0 io: [0x1800-0x18ff]
pci_bus 0000:06: resource 1 io: [0x1c00-0x1cff]
pci_bus 0000:06: resource 2 pref mem [0x10000000-0x13ffffff]
pci_bus 0000:06: resource 3 mem: [0x14000000-0x17ffffff]
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
NET: Registered protocol family 1
Simple Boot Flag at 0x37 set to 0x1
Scanning for low memory corruption every 60 seconds
msgmni has been set to 242
alg: No test for stdrng (krng)
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered (default)
pci 0000:00:00.0: Limiting direct PCI/PCI transfers
pci 0000:01:00.0: Boot video device
ACPI: AC Adapter [AC] (on-line)
input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
ACPI: Power Button [PWRF]
input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input1
ACPI: Lid Switch [LID]
fan PNP0C0B:00: registered as cooling_device0
ACPI: Fan [FAN] (off)
Marking TSC unstable due to TSC halts in idle
ACPI: CPU0 (power states: C1[C1] C2[C2])
processor LNXCPU:00: registered as cooling_device1
ACPI: Processor [CPU0] (supports 4 throttling states)
Switching to clocksource acpi_pm
Switched to high resolution mode on CPU 0
thermal LNXTHERM:01: registered as thermal_zone0
ACPI: Thermal Zone [THRM] (54 C)
Linux agpgart interface v0.103
agpgart-intel 0000:00:00.0: Intel 440BX Chipset
agpgart-intel 0000:00:00.0: AGP aperture is 64M @ 0xf8000000
Hangcheck: starting hangcheck timer 0.9.0 (tick is 180 seconds, margin is 60 seconds).
Hangcheck: Using get_cycles().
Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a NS16550A
00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
loop: module loaded
Uniform Multi-Platform E-IDE driver
piix 0000:00:07.1: IDE controller (0x8086:0x7111 rev 0x01)
piix 0000:00:07.1: IDE port disabled
piix 0000:00:07.1: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xfcd0-0xfcd7
Probing IDE interface ide0...
ACPI: Battery Slot [BAT0] (battery absent)
hda: IBM-DARA-212000, ATA DISK drive
hdb: TOSHIBA DVD-ROM SD-C2302, ATAPI CD/DVD-ROM drive
hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4
hda: UDMA/33 mode selected
hdb: host max PIO4 wanted PIO255(auto-tune) selected PIO4
hdb: UDMA/33 mode selected
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide-gd driver 1.18
hda: max request size: 128KiB
hda: 23579136 sectors (12072 MB) w/418KiB Cache, CHS=23392/16/63
hda: cache flushes not supported
hda: hda1 hda2
ide-cd driver 5.00
ide-cd: hdb: ATAPI 24X DVD-ROM drive, 128kB Cache
Uniform CD-ROM driver Revision: 3.20
PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:MOUE] at 0x60,0x64 irq 1,12
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
mice: PS/2 mouse device common for all mice
cpuidle: using governor ladder
cpuidle: using governor menu
TCP cubic registered
NET: Registered protocol family 17
Using IPI No-Shortcut mode
input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2
Synaptics Touchpad, model: 1, fw: 4.6, id: 0x135ea1, caps: 0x804713/0x0
input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input3
EXT3-fs: hda2: couldn't mount because of unsupported optional features (240).
EXT2-fs: hda2: couldn't mount because of unsupported optional features (240).
EXT4-fs (hda2): barriers enabled
EXT4-fs (hda2): delayed allocation enabled
EXT4-fs: file extents enabled
EXT4-fs: mballoc enabled
EXT4-fs (hda2): mounted filesystem with ordered data mode
VFS: Mounted root (ext4 filesystem) readonly on device 3:2.
Freeing unused kernel memory: 340k freed
kjournald2 starting: pid 26, dev hda2:8, commit interval 5 seconds
Write protecting the kernel text: 2872k
Write protecting the kernel read-only data: 740k
EXT4-fs (hda2): internal journal on hda2:8
JBD: barrier-based sync failed on hda2:8 - disabling barriers
69d25870f20c4b2563304f2b79c5300dd60a067e is the first bad commit
commit 69d25870f20c4b2563304f2b79c5300dd60a067e
Author: Arjan van de Ven <arjan@infradead.org>
Date: Mon Sep 21 17:04:08 2009 -0700

cpuidle: fix the menu governor to boost IO performance

Fix the menu idle governor which balances power savings, energy efficiency
and performance impact.

The reason for a reworked governor is that there have been serious
performance issues reported with the existing code on Nehalem server
systems.

To show this I'm sure Andrew wants to see benchmark results:
(benchmark is "fio", "no cstates" is using "idle=poll")

no cstates current linux new algorithm
1 disk 107 Mb/s 85 Mb/s 105 Mb/s
2 disks 215 Mb/s 123 Mb/s 209 Mb/s
12 disks 590 Mb/s 320 Mb/s 585 Mb/s

In various power benchmark measurements, no degredation was found by our
measurement&diagnostics team. Obviously a small percentage more power was
used in the "fio" benchmark, due to the much higher performance.

While it would be a novel idea to describe the new algorithm in this
commit message, I cheaped out and described it in comments in the code
instead.

[changes since first post: spelling fixes from akpm, review feedback,
folded menu-tng into menu.c]

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

:040000 040000 6950249ee85fe869ebbb71aaf33984699224cd1d 1e4ab42d8d229d0151bb39a548ed95eb93f75f95 M drivers
:040000 040000 4bb15927952a3781752f462c9005860f1878265c 8a460cc55da7faac14523c79f6457b1cd9353276 M include
:040000 040000 71c103ec210293b8b6bcad896bec28b5abea635e cd730d0a1db46960a5f0e0590334c8ce5f413a13 M kernel
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