linux-kernel - Re: Problem with cpufreq and i5 since post 3.9.0

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20131227195350.GI17115@Blackswan>
Date:	Fri, 27 Dec 2013 19:53:50 +0000
From:	David Woodfall <dave@...oodfall.net>
To:	linux-kernel@...r.kernel.org
Subject: Re: Problem with cpufreq and i5 since post 3.9.0

On (27/12/13 20:44), Heinz Diehl <htd@...cy-poultry.org> put forth the proposition:
>On 27.12.2013, David Woodfall wrote:
>
>> But any of the newer kernel versions I've tested only give me
>> performance and powersave.
>
>I don't use any Fedora kernel, so I can't tell which governors are
>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
>in the respective .config file for your installed kernel.
>
>In short: It seems that only "performance" and "powersave" are
>compiled in.

No, I used the same .config in all versions that I tested. I've also
tried setting them as modules rather than built-in. This is the stock
slackware .config:

CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=m
CONFIG_CPU_FREQ_GOV_COMMON=y
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_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=m
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m

And modprobing any governor module does not change the output of 
scaling_available_governors.

-Dave



--
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/