RE: [BUG?]: cpufreqency scaling - wrong frequency detected

[Pallipadi, Venkatesh]

Never mind about acpidmp. This seems to be a issue with
p4-clockmod.c/speedstep-lib.c and the routine which gets the initial
frequency. As a result all frequencies are getting multiplied by 8. Not
sure what the exact bug is though. Dominik can give a better answer.
Cpufreq debug messages will help.

Thanks,
Venki

>-----Original Message-----
>From: Pallipadi, Venkatesh 
>Sent: Thursday, January 20, 2005 12:56 PM
>To: 'Matthias-Christian Ott'; linux-kernel@xxxxxxxxxxxxxxx
>Cc: linux@xxxxxxxx; Nakajima, Jun; Zou, Nanhai
>Subject: RE: [BUG?]: cpufreqency scaling - wrong frequency detected
>
>
>Hi,
>
>Can you send the output of 'acpidmp' from this system to me? 
>If acpidmp is not already installed, you should be able to 
>grab it from here. 
>http://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/ 
>
>Thanks,
>Venki
>
>>-----Original Message-----
>>From: Matthias-Christian Ott [mailto:matthias.christian@xxxxxxxxxx] 
>>Sent: Thursday, January 20, 2005 12:13 PM
>>To: Linux Kernel Mailing List
>>Cc: linux@xxxxxxxx; Nakajima, Jun; Pallipadi, Venkatesh; Zou, Nanhai
>>Subject: [BUG?]: cpufreqency scaling - wrong frequency detected
>>
>>Hi!
>>The Kernel cpufrequency scaling modul seems to have a bug, it 
>displays 
>>the frequency of 14,60 Ghz. I don't enabled debugging in the 
>>config, but 
>>I hope this information can help you. I don't know if it's 
>>really a bug, 
>>so I send it to the mailing list instead of reporting it to 
>>the bugzilla 
>>bugtracking system. if you need additional information, I'll 
>compile a 
>>Kernel with cpufreq debugging.
>>
>>Matthias-Christian Ott
>>
>>[fox@iceowl ~]$ cat /proc/version
>>Linux version 2.6.11-rc1-bk7-ott (root@xxxxxxxxxxxxxxxxxxxxxx) 
>>(gcc-Version 3.4.3) #1 SMP Thu Jan 20 16:18:06 CET 2005
>>
>>[root@iceowl ~]# dmesg
>>ACPI: RSDP (v000 MSISYS                                ) @ 0x000f7550
>>ACPI: RSDT (v001 MSISYS MSI ACPI 0x42302e31 AWRD 0x00000000) @ 
>>0x17ff3000
>>ACPI: FADT (v001 MSISYS MSI ACPI 0x42302e31 AWRD 0x00000000) @ 
>>0x17ff3040
>>ACPI: MADT (v001 MSISYS AWRDACPI 0x42302e31 AWRD 0x00000000) @ 
>>0x17ff6c40
>>ACPI: DSDT (v001 MSISYS AWRDACPI 0x00001000 MSFT 0x0100000c) @ 
>>0x00000000
>>ACPI: PM-Timer IO Port: 0x4008
>>ACPI: Local APIC address 0xfee00000
>>ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
>>Processor #0 15:1 APIC version 20
>>ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
>>IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
>>ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high level)
>>ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
>>ACPI: IRQ0 used by override.
>>ACPI: IRQ2 used by override.
>>ACPI: IRQ9 used by override.
>>Enabling APIC mode:  Flat.  Using 1 I/O APICs
>>Using ACPI (MADT) for SMP configuration information
>>Built 1 zonelists
>>Kernel command line: root=/dev/discs/disc0/part1 
>>video=vesafb:ywrap,mtrr 
>>vga=0x318 elevator=cfq ro mem=393152K
>>[..]
>>CPU: After generic identify, caps: 3febfbff 00000000 00000000 
>00000000 
>>00000000 00000000 00000000
>>CPU: After vendor identify, caps: 3febfbff 00000000 00000000 00000000 
>>00000000 00000000 00000000
>>CPU: Trace cache: 12K uops, L1 D cache: 8K
>>CPU: L2 cache: 256K
>>CPU: Hyper-Threading is disabled
>>CPU: After all inits, caps: 3febfbff 00000000 00000000 
>>00000080 00000000 
>>00000000 00000000
>>Intel machine check architecture supported.
>>Intel machine check reporting enabled on CPU#0.
>>CPU0: Intel P4/Xeon Extended MCE MSRs (12) available
>>CPU0: Thermal monitoring enabled
>>Enabling fast FPU save and restore... done.
>>Enabling unmasked SIMD FPU exception support... done.
>>Checking 'hlt' instruction... OK.
>>CPU0: Intel(R) Pentium(R) 4 CPU 1.80GHz stepping 02
>>per-CPU timeslice cutoff: 731.50 usecs.
>>[..]
>>Total of 1 processors activated (3563.52 BogoMIPS).
>>ENABLING IO-APIC IRQs
>>..TIMER: vector=0x31 pin1=2 pin2=-1
>>Brought up 1 CPUs
>>CPU0 attaching sched-domain:
>> domain 0: span 1
>>  groups: 1
>>  domain 1: span 1
>>   groups: 1
>>[..]
>>ACPI: Subsystem revision 20041210
>>    ACPI-1138: *** Error: Method execution failed [\STRC] (Node 
>>d7fc3660), AE_AML_BUFFER_LIMIT
>>    ACPI-1138: *** Error: Method execution failed [\_SB_.PCI0._INI] 
>>(Node d7fc7420), AE_AML_BUFFER_LIMIT
>>ACPI: Interpreter enabled
>>ACPI: Using IOAPIC for interrupt routing
>>ACPI: PCI Root Bridge [PCI0] (00:00)
>>PCI: Probing PCI hardware (bus 00)
>>PCI: Transparent bridge - 0000:00:1e.0
>>ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
>>ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
>>ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>>ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 11 *12 14 15)
>>ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>>ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>>ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>>ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>>ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 *5 6 7 9 10 11 12 14 15)
>>ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
>>[..]
>>ACPI: Power Button (FF) [PWRF]
>>ACPI: Sleep Button (CM) [SLPB]
>>ACPI: Fan [FAN] (on)
>>ACPI: CPU0 (power states: C1[C1] C2[C2])
>>ACPI: Processor [CPU0] (supports 2 throttling states)
>>ACPI: Thermal Zone [THRM] (22 C)
>>[..]
>>p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available
>>[..]
>>
>>[root@iceowl ~]# cat /proc/cpuinfo
>>processor       : 0
>>vendor_id       : GenuineIntel
>>cpu family      : 15
>>model           : 1
>>model name      : Intel(R) Pentium(R) 4 CPU 1.80GHz
>>stepping        : 2
>>cpu MHz         : 1800.257
>>cache size      : 256 KB
>>physical id     : 0
>>siblings        : 1
>>fdiv_bug        : no
>>hlt_bug         : no
>>f00f_bug        : no
>>coma_bug        : no
>>fpu             : yes
>>fpu_exception   : yes
>>cpuid level     : 2
>>wp              : yes
>>flags           : fpu vme de pse tsc msr pae mce cx8 apic sep 
>mtrr pge 
>>mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
>>bogomips        : 3563.52
>>
>>[root@iceowl ~]# cat 
>>/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
>>14600000
>>
>>[root@iceowl ~]# cat 
>>/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
>>3650000 5475000 7300000 9125000 10950000 12775000 14600000
>>
>>[root@iceowl ~]# cat 
>>/home/fox/builds/kernel/kernel-2.6.10-rc1-ott/config
>>[..]
>>CONFIG_X86_PC=y
>>[..]
>>CONFIG_MPENTIUM4=y
>>[..]
>>CONFIG_X86_GENERIC=y
>>CONFIG_X86_CMPXCHG=y
>>CONFIG_X86_XADD=y
>>CONFIG_X86_L1_CACHE_SHIFT=7
>>CONFIG_RWSEM_XCHGADD_ALGORITHM=y
>>CONFIG_GENERIC_CALIBRATE_DELAY=y
>>CONFIG_X86_WP_WORKS_OK=y
>>CONFIG_X86_INVLPG=y
>>CONFIG_X86_BSWAP=y
>>CONFIG_X86_POPAD_OK=y
>>CONFIG_X86_GOOD_APIC=y
>>CONFIG_X86_INTEL_USERCOPY=y
>>CONFIG_X86_USE_PPRO_CHECKSUM=y
>>CONFIG_HPET_TIMER=y
>>CONFIG_SMP=y
>>CONFIG_NR_CPUS=4
>>CONFIG_SCHED_SMT=y
>>CONFIG_PREEMPT=y
>>CONFIG_PREEMPT_BKL=y
>>CONFIG_X86_LOCAL_APIC=y
>>CONFIG_X86_IO_APIC=y
>>CONFIG_X86_TSC=y
>>CONFIG_X86_MCE=y
>>CONFIG_X86_MCE_NONFATAL=m
>>CONFIG_X86_MCE_P4THERMAL=y
>>CONFIG_TOSHIBA=m
>>CONFIG_I8K=m
>>[..]
>>CONFIG_PM=y
>># CONFIG_PM_DEBUG is not set
>>CONFIG_SOFTWARE_SUSPEND=y
>>CONFIG_PM_STD_PARTITION=""
>>[..]
>>CONFIG_ACPI=y
>>CONFIG_ACPI_BOOT=y
>>CONFIG_ACPI_INTERPRETER=y
>>CONFIG_ACPI_SLEEP=y
>>CONFIG_ACPI_SLEEP_PROC_FS=y
>>CONFIG_ACPI_AC=y
>>CONFIG_ACPI_BATTERY=y
>>CONFIG_ACPI_BUTTON=y
>>CONFIG_ACPI_VIDEO=y
>>CONFIG_ACPI_FAN=y
>>CONFIG_ACPI_PROCESSOR=y
>>CONFIG_ACPI_THERMAL=y
>>CONFIG_ACPI_ASUS=m
>>CONFIG_ACPI_IBM=m
>>CONFIG_ACPI_TOSHIBA=m
>>CONFIG_ACPI_BLACKLIST_YEAR=0
>># CONFIG_ACPI_DEBUG is not set
>>CONFIG_ACPI_BUS=y
>>CONFIG_ACPI_EC=y
>>CONFIG_ACPI_POWER=y
>>CONFIG_ACPI_PCI=y
>>CONFIG_ACPI_SYSTEM=y
>>CONFIG_X86_PM_TIMER=y
>># CONFIG_ACPI_CONTAINER is not set
>>[..]
>>CONFIG_CPU_FREQ=y
>># CONFIG_CPU_FREQ_DEBUG is not set
>>CONFIG_CPU_FREQ_STAT=m
>>CONFIG_CPU_FREQ_STAT_DETAILS=y
>># CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
>>CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
>>CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
>>CONFIG_CPU_FREQ_GOV_POWERSAVE=y
>>CONFIG_CPU_FREQ_GOV_USERSPACE=y
>>CONFIG_CPU_FREQ_GOV_ONDEMAND=y
>>CONFIG_CPU_FREQ_TABLE=y
>>[..]
>>CONFIG_X86_ACPI_CPUFREQ=y
>>CONFIG_X86_POWERNOW_K6=m
>>CONFIG_X86_POWERNOW_K7=m
>>CONFIG_X86_POWERNOW_K7_ACPI=y
>>CONFIG_X86_POWERNOW_K8=m
>>CONFIG_X86_POWERNOW_K8_ACPI=y
>>CONFIG_X86_GX_SUSPMOD=m
>>CONFIG_X86_SPEEDSTEP_CENTRINO=m
>>CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI=y
>>CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE=y
>>CONFIG_X86_SPEEDSTEP_ICH=m
>>CONFIG_X86_SPEEDSTEP_SMI=m
>>CONFIG_X86_P4_CLOCKMOD=y
>>CONFIG_X86_CPUFREQ_NFORCE2=m
>>CONFIG_X86_LONGRUN=m
>>CONFIG_X86_LONGHAUL=m
>>[..]
>># CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set
>>CONFIG_X86_SPEEDSTEP_LIB=y
>>CONFIG_X86_SPEEDSTEP_RELAXED_CAP_CHECK=y
>>[..]
>>
>>
>>
>
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