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Date: Fri, 8 Jan 2010 10:15:13 -0700 From: Alex Chiang <achiang@...com> To: Dimitrios Apostolou <jimis@....net> Cc: Len Brown <lenb@...nel.org>, Bjorn Helgaas <bjorn.helgaas@...com>, Andrew Morton <akpm@...ux-foundation.org>, Yinghai Lu <yinghai@...nel.org>, arjan@...radead.org, linux-kernel@...r.kernel.org Subject: Re: High cpu temperature with 2.6.32, bisection shows commit 69d258 (fwd) Since you bisected this down to a commit from Arjan, it might help to cc him. Adding him and lkml. * Dimitrios Apostolou <jimis@....net>: > Hello and sorry if I bother. I sent this email to lkml 2 days ago but got > no answer. Supposing it was lost somewhere I send it personally to you > that are listed as the maintainers of the "processor" module. If I should > reformulate the email and send it to lkml, please tell me what I should > add and I'll resend it. > > Please CC replies to me. > > Thanks in advance, > Dimitris > > > ---------- Forwarded message ---------- > Date: Wed, 6 Jan 2010 19:39:48 +0200 (EET) > From: Dimitrios Apostolou <jimis@....net> > To: linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org > Subject: High 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@...go) (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@...go) (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 Content-Description: bisection output > 69d25870f20c4b2563304f2b79c5300dd60a067e is the first bad commit > commit 69d25870f20c4b2563304f2b79c5300dd60a067e > Author: Arjan van de Ven <arjan@...radead.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@...ux.intel.com> > Cc: Venkatesh Pallipadi <venkatesh.pallipadi@...el.com> > Cc: Len Brown <lenb@...nel.org> > Cc: Ingo Molnar <mingo@...e.hu> > Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl> > Cc: Yanmin Zhang <yanmin_zhang@...ux.intel.com> > Acked-by: Ingo Molnar <mingo@...e.hu> > Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> > Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> > Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org> > > :040000 040000 6950249ee85fe869ebbb71aaf33984699224cd1d 1e4ab42d8d229d0151bb39a548ed95eb93f75f95 M drivers > :040000 040000 4bb15927952a3781752f462c9005860f1878265c 8a460cc55da7faac14523c79f6457b1cd9353276 M include > :040000 040000 71c103ec210293b8b6bcad896bec28b5abea635e cd730d0a1db46960a5f0e0590334c8ce5f413a13 M kernel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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