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2018-11-07Documentation: cpu-freq: Frequencies aren't always sortedViresh Kumar1-3/+5
The order in which the frequencies are displayed in cpufreq stats depends on the order in which the frequencies were sorted in the frequency table provided to cpufreq core by the cpufreq driver. They can be completely unsorted as well. The documentation's claim that the stats will be sorted in descending order is hence incorrect and here is an attempt to fix it. Reported-by: Pavel <pavel2000@ngs.ru> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-11-08cpufreq: stats: Handle the case when trans_table goes beyond PAGE_SIZEGautham R. Shenoy1-0/+3
On platforms with large number of Pstates, the transition table, which is a NxN matrix, can overflow beyond the PAGE_SIZE boundary. This can be seen on POWER9 which has 100+ Pstates. As a result, each time the trans_table is read for any of the CPUs, we will get the following error. --------------------------------------------------- fill_read_buffer: show+0x0/0xa0 returned bad count --------------------------------------------------- This patch ensures that in case of an overflow, we print a warning once in the dmesg and return FILE TOO LARGE error for this and all subsequent accesses of trans_table. Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-03cpufreq: Documentation: Updates based on current codeViresh Kumar1-18/+6
The cpufreq core has gone though lots of updates in recent times, but on many occasions the documentation wasn't updated along with the code. This patch tries to catchup the documentation with the code. Also add Rafael and Viresh as the contributors to the documentation. Based on a patch from Claudio Scordino. Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-11-11cpufreq: stats: New sysfs attribute for clearing statisticsMarkus Mayer1-0/+6
Allow CPUfreq statistics to be cleared by writing anything to /sys/.../cpufreq/stats/reset. Signed-off-by: Markus Mayer <mmayer@broadcom.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-09-08cpufreq-stats: Minor documentation fixJean Delvare1-1/+1
The cpufreq-stats code can no longer be built as a module, so it now appears with square brackets in menuconfig. Signed-off-by: Jean Delvare <jdelvare@suse.de> Fixes: 1aefc75b2449 (cpufreq: stats: Make the stats code non-modular) Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2007-05-09misc doc and kconfig typosMatt LaPlante1-1/+1
Fix various typos in kernel docs and Kconfigs, 2.6.21-rc4. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03Fix typos in Documentation/: 'S'Matt LaPlante1-4/+4
This patch fixes typos in various Documentation txts. The patch addresses some words starting with the letter 'S'. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Alan Cox <alan@redhat.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03Fix typos in Documentation/: 'F'-'G'Matt LaPlante1-1/+1
This patch fixes typos in various Documentation txts. The patch addresses some words starting with the letters 'F'-'G'. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-09-10[PATCH] Spelling fixes for Documentation/Tobias Klauser1-1/+1
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 <tklauser@nuerscht.ch> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-31[PATCH] cpufreq-stats driver documentationVenkatesh Pallipadi1-0/+128
Documentation for cpufreq stats. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Dave Jones <davej@redhat.com>