02 Sep, 2009
1 commit
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I think the way "cpuinfo_cur_info" and "scaling_cur_info" are defined under
./Documentation/cpu-freq/user-guide.txt can be enhanced. Currently, they are
both defined the same way: "Current speed/frequency" of the CPU, in KHz".Below is a patch that distinguishes one from the other.
Regards,
- naga ------------------------------------------
Update description for "cpuinfo_cur_freq" and "scaling_cur_freq".Some of the wording is drawn from comments found in
./drivers/cpufreq/cpufreq.c: cpufreq_out_of_sync():* @old_freq: CPU frequency the kernel thinks the CPU runs at
* @new_freq: CPU frequency the CPU actually runs atSigned-off-by: Naga Chumbalkar
Signed-off-by: Dave Jones
15 Jun, 2009
2 commits
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I have been reading the documentation for cpufreq closely. Found a couple of
minor errors in the Documentation.Signed-off-by: Naga Chumbalkar
Signed-off-by: Dave Jones -
Update the documentation accordingly.
Cleanup and use printk_once.Signed-off-by: Thomas Renninger
Signed-off-by: Dave Jones
25 Feb, 2009
3 commits
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Limit sampling rate to transition_latency * 100 or kernel limits.
If sampling_rate is tried to be set too low, set the lowest allowed value.Signed-off-by: Thomas Renninger
Signed-off-by: Dave Jones -
The same info can be obtained via the transition_latency sysfs file
Signed-off-by: Thomas Renninger
Signed-off-by: Dave Jones -
It's not only useful for the ondemand and conservative governors, but
also for userspace daemons to know about the HW transition latency of
the CPU.
It is especially useful for userspace to know about this value when
the ondemand or conservative governors are run. The sampling rate
control value depends on it and for userspace being able to set sane
tuning values there it has to know about the transition latency.Signed-off-by: Thomas Renninger
Signed-off-by: Dave Jones
04 Feb, 2009
1 commit
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They were long enough set deprecated...
Update Documentation/cpu-freq/users-guide.txt:
The deprecated files listed there seen not to exist for some time anymore
already.Signed-off-by: Thomas Renninger
Signed-off-by: Len Brown
22 Dec, 2008
1 commit
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The sh cpufreq driver is no longer limited to just the SH-3 and SH-4,
update the documentation to reflect this fact accordingly.Signed-off-by: Paul Mundt
26 Nov, 2008
1 commit
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Signed-off-by: Robin Getz
Signed-off-by: Bryan Wu
Signed-off-by: Dave Jones
10 Oct, 2008
1 commit
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Replace the no longer working links and email address in the
documentation and in source code.Signed-off-by: Márton Németh
Signed-off-by: Dave Jones
27 Jul, 2008
1 commit
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Cc: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 May, 2008
1 commit
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sampling_down_factor was removed in ccb2fe209dac9ff67f6351e783e610073afaaeaf
back in June 2006.Signed-off-by: Dave Jones
29 Apr, 2008
1 commit
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There is a description of some of the sysfs files. However, there are some
that are not mentioned in the documentation, so add them to the user's guide.Signed-off-by: Darrick J. Wong
Cc: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Signed-off-by: Dave Jones
26 Jan, 2008
1 commit
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There have been patches hanging around for ages to add support for
cpufreq to PXA255 processors. It's about time we applied one.Signed-off-by: Russell King
09 May, 2007
1 commit
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Fix various typos in kernel docs and Kconfigs, 2.6.21-rc4.
Signed-off-by: Matt LaPlante
Signed-off-by: Adrian Bunk
13 Dec, 2006
1 commit
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Conflicts:
drivers/cpufreq/cpufreq.c
30 Nov, 2006
1 commit
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This patch fixes typos in various Documentation txts. The patch addresses some
misc words.Signed-off-by: Matt LaPlante
Acked-by: Randy Dunlap
Signed-off-by: Adrian Bunk
16 Oct, 2006
1 commit
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Fix reference to where the code actually is. Noted by Hero Wanders.
Signed-off-by: Dominik Brodowski
Signed-off-by: Dave Jones
04 Oct, 2006
4 commits
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This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letter 'S'.Signed-off-by: Matt LaPlante
Acked-by: Alan Cox
Acked-by: Randy Dunlap
Signed-off-by: Adrian Bunk -
This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'N'-'P'.Signed-off-by: Matt LaPlante
Acked-by: Randy Dunlap
Signed-off-by: Adrian Bunk -
This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'H'-'M'.Signed-off-by: Matt LaPlante
Acked-by: Randy Dunlap
Signed-off-by: Adrian Bunk -
This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'F'-'G'.Signed-off-by: Matt LaPlante
Signed-off-by: Adrian Bunk
01 Aug, 2006
1 commit
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I just stumbled on this bug/feature, this is how to reproduce it:
# echo 450000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
# echo 450000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
# echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
# cpufreq-info -p
450000 450000 powersave
# echo 1800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq ; echo $?
0
# cpufreq-info -p
450000 450000 powersaveHere it is. The kernel refuses to set a min_freq higher than the
max_freq but it allows a max_freq lower than min_freq (lowering min_freq
also).This behaviour is pretty straightforward (but undocumented) and it
doesn't return an error altough failing to accomplish the requested
action (set min_freq).
The problem (IMO) is basically that userspace is not allowed to set a
full policy atomically while the kernel always does that thus it must
enforce an ordering on operations.The attached patch returns -EINVAL if trying to increase frequencies
starting from scaling_min_freq and documents the correct ordering of writes.Signed-off-by: Mattia Dongili
Signed-off-by: Dominik Brodowski
Signed-off-by: Dave Jones--
03 Apr, 2006
1 commit
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Update LART site URL.
The LART website moved to http://www.lartmaker.nl/. This patch
updates the URL in CpuFreq specific files.Signed-off-by: Erik Mouw
Signed-off-by: Dave Jones
01 Dec, 2005
1 commit
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Added a more verbose entry for the 'ondemend' governor and an entry for the
'conservative' governor to the documentation.Signed-off-by: Alexander Clouter
Signed-off-by: Andrew Morton
Signed-off-by: Dave Jones
11 Sep, 2005
1 commit
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The attached patch fixes the following spelling errors in Documentation/
- double "the"
- Several misspellings of function/functionality
- infomation
- memeory
- Recieved
- wether
and possibly others which I forgot ;-)
Trailing whitespaces on the same line as the typo are also deleted.Signed-off-by: Tobias Klauser
Signed-off-by: Domen Puncer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jun, 2005
1 commit
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I corrected a small error and enhanced the govenor.txt file with the
ondemand daemon because the kernel configs link to the documentation but
ondemand wasn't documentated. Feel free to include the patch in the
attachment.Cc: Dominik Brodowski
Cc: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jun, 2005
1 commit
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Documentation for cpufreq stats.
Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Dave Jones
17 Apr, 2005
1 commit
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.Let it rip!
