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

From: Matthias-Christian Ott
Date: Fri Jan 21 2005 - 12:35:23 EST

Next message: Tony Lindgren: "Re: [PATCH] dynamic tick patch"
Previous message: Prarit Bhargava: "Re: [PATCH][RFC]: Clean up resource allocation in i8042 driver"
In reply to: Matthias-Christian Ott: "Re: [BUG?]: cpufreqency scaling - wrong frequency detected"
Next in thread: Pallipadi, Venkatesh: "RE: [BUG?]: cpufreqency scaling - wrong frequency detected"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

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@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
[..]

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

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 linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Next message: Tony Lindgren: "Re: [PATCH] dynamic tick patch"
Previous message: Prarit Bhargava: "Re: [PATCH][RFC]: Clean up resource allocation in i8042 driver"
In reply to: Matthias-Christian Ott: "Re: [BUG?]: cpufreqency scaling - wrong frequency detected"
Next in thread: Pallipadi, Venkatesh: "RE: [BUG?]: cpufreqency scaling - wrong frequency detected"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]