linux-kernel - Fwd: 2.6.25.x: Wrong CPU frequency (cpufreq table) with p4-clockmod

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Date:	Fri, 30 May 2008 19:29:20 +0200
From:	Guntsche Michael <mike@...loops.com>
To:	linux-kernel@...r.kernel.org
Subject: Fwd: 2.6.25.x: Wrong CPU frequency (cpufreq table) with p4-clockmod


Now to the correct list.

> From: Guntsche Michael <mike@...loops.com>
> Date: May 30, 2008 19:21:14 GMT+02:00
> To: Arjan van de Ven <arjan@...radead.org>
> Cc: linux-raid@...r.kernel.org
> Subject: Re: 2.6.25.x: Wrong CPU frequency (cpufreq table) with p4- 
> clockmod
>
> Ok,
>
> I enabled debugging and here is the output of the boot-up
>
> cpufreq-core: trying to register driver p4-clockmod
> cpufreq-core: adding CPU 0
> p4-clockmod: has errata -- disabling low frequencies
> speedstep-lib: x86: f, model: 1
> speedstep-lib: P4 - MSR_EBC_FREQUENCY_ID: 0x8a01fe00 0x0
> speedstep-lib: P4 - FSB 100000 kHz; Multiplier 138; Speed 13800000 kHz
> freq-table: setting show_table for cpu 0 to e2950d60
> freq-table: table entry 0 is invalid, skipping
> freq-table: table entry 1 is invalid, skipping
> freq-table: table entry 2: 3450000 kHz, 2 index
> freq-table: table entry 3: 5175000 kHz, 3 index
> freq-table: table entry 4: 6900000 kHz, 4 index
> freq-table: table entry 5: 8625000 kHz, 5 index
> freq-table: table entry 6: 10350000 kHz, 6 index
> freq-table: table entry 7: 12075000 kHz, 7 index
> freq-table: table entry 8: 13800000 kHz, 8 index
> cpufreq-core: setting new policy for CPU 0: 3450000 - 13800000 kHz
> freq-table: request for verification of policy (3450000 - 13800000  
> kHz) for cpu 0
> freq-table: verification lead to (3450000 - 13800000 kHz) for cpu 0
> freq-table: request for verification of policy (3450000 - 13800000  
> kHz) for cpu 0
> freq-table: verification lead to (3450000 - 13800000 kHz) for cpu 0
> cpufreq-core: new min and max freqs are 3450000 - 13800000 kHz
> cpufreq-core: governor switch
> cpufreq-core: __cpufreq_governor for CPU 0, event 1
> cpufreq-core: governor: change or update limits
> cpufreq-core: __cpufreq_governor for CPU 0, event 3
> cpufreq-core: initialization complete
> cpufreq-core: driver p4-clockmod up and running
> p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available
>
> FSB and the multiplier look a litte bit off to me.
>
> /Michael
>

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