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

[Matthias-Christian Ott <matthias.christian@tiscali.de>]

Matthias-Christian Ott wrote:

> Pallipadi, Venkatesh wrote:
>
>> 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@vger.kernel.org
>>> Cc: linux@brodo.de; 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@tiscali.de] 
>>>> Sent: Thursday, January 20, 2005 12:13 PM
>>>> To: Linux Kernel Mailing List
>>>> Cc: linux@brodo.de; 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@iceowl.ott.dyndns.info) 
>>>> (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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>>
>>  
>>
> Hi!
> Cpufreq (with enabled debugging (not CONFIG_DEBUG_KERNEL)) doesn't 
> display any additional messages. I'll compile it with 
> CONFIG_DEBUG_KERNEL.
>
> Matthias-Christian Ott
> -
> To unsubscribe from this list: send the line "unsubscribe 
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> Please read the FAQ at  http://www.tux.org/lkml/
>
Hi!
CONFIG_DEBUG_KERNEL doesn't display any additional messages. What do I 
have activate to get such debugging messages:
dprintk("P4 - MSR_EBC_FREQUENCY_ID: 0x%x 0x%x\n", msr_lo, msr_hi);

Matthias-Christian Ott