linux.git/tools/power/cpupower/utils, branch master

cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set

2016-11-01T05:16:52+00:00

When converting to a shared library in ac5a181d065d ("cpupower: Add cpuidle parts into library"), cpu_freq_cpu_exists() was converted to cpupower_is_cpu_online(). cpu_req_cpu_exists() returned 0 on success and -ENOSYS on failure whereas cpupower_is_cpu_online returns 1 on success. Check for the correct return value in cpufreq-set. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1374212 Fixes: ac5a181d065d (cpupower: Add cpuidle parts into library) Reported-by: Julian Seward Signed-off-by: Laura Abbott Acked-by: Thomas Renninger Cc: 4.7+ # 4.7+ Signed-off-by: Rafael J. Wysocki

cpupower: Add cpuidle parts into library

2016-04-28T14:02:29+00:00

This more or less is a renaming and moving of functions and should not introduce any functional change. cpupower was built from cpufrequtils (which had a C library providing easy access to cpu frequency platform info). In the meantime it got enhanced by quite some neat cpuidle userspace tools. Now the cpu idle functions have been separated and added to the cpupower.so library. So beside an already existing public header file: cpufreq.h cpupower now also exports these cpu idle functions in: cpuidle.h Here again pasted for better review of the interfaces: ====================================== int cpuidle_is_state_disabled(unsigned int cpu, unsigned int idlestate); int cpuidle_state_disable(unsigned int cpu, unsigned int idlestate, unsigned int disable); unsigned long cpuidle_state_latency(unsigned int cpu, unsigned int idlestate); unsigned long cpuidle_state_usage(unsigned int cpu, unsigned int idlestate); unsigned long long cpuidle_state_time(unsigned int cpu, unsigned int idlestate); char *cpuidle_state_name(unsigned int cpu, unsigned int idlestate); char *cpuidle_state_desc(unsigned int cpu, unsigned int idlestate); unsigned int cpuidle_state_count(unsigned int cpu); char *cpuidle_get_governor(void); char *cpuidle_get_driver(void); ====================================== Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: Fix build error in cpufreq-info

2016-01-19T00:17:23+00:00

Fix the following build error by including limits.h - utils/cpufreq-info.c: In function ‘get_latency’: utils/cpufreq-info.c:437:29: error: ‘UINT_MAX’ undeclared (first use in this function) if (!latency || latency == UINT_MAX) { ^ Signed-off-by: Shreyas B. Prabhu Fixes: e98f033f94f3 (cpupower: fix how "cpupower frequency-info" interprets latency) Signed-off-by: Rafael J. Wysocki

cpupower: fix how "cpupower frequency-info" interprets latency

2015-12-03T01:30:30+00:00

the intel-pstate driver does not support the ondemand governor and does not have a valid value in /sys/devices/system/cpu/cpu[x]/cpufreq/cpuinfo_transition_latency. The intel-pstate driver sets cpuinfo_transition_latency to CPUFREQ_ETERNAL (-1), the value written into cpuinfo_transition_latency is defind as an unsigned int so checking the read value against max unsigned int will determine if the value is valid. Signed-off-by: Jacob Tanenbaum Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: rework the "cpupower frequency-info" command

2015-12-03T01:30:30+00:00

this patch makes two changes to the way that "cpupower frequancy-info" operates 1. make it so that querying individual values always returns a message to the user currently cpupower frequency info doesn't return anything to the user when querying an individual value cannot be returned [root@amd-dinar-09 cpupower]# cpupower -c 4 frequency-info -d analyzing CPU 4: [root@amd-dinar-09 cpupower]# I added messages so that each query prints a message to the terminal [root@amd-dinar-09 cpupower]# ./cpupower -c 4 frequency-info -d analyzing CPU 4: no or unknown cpufreq driver is active on this CPU [root@amd-dinar-09 cpupower]# (this is just one example) 2. change debug_output_one() to use the functions already provided by cpufreq-info.c to query individual values of interest. Signed-off-by: Jacob Tanenbaum Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: Do not analyse offlined cpus

2015-12-03T01:30:30+00:00

Use sysfs_is_cpu_online(cpu) instead of cpufreq_cpu_exists(cpu) to detect offlined cpus. Re-arrange printfs slightly to have a consistent output even if you have multiple CPUs as output and even if offlined cores are in between. Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: Fix precedence issue

2015-12-03T01:30:29+00:00

Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

Creating a common structure initialization pattern for struct option

2015-11-02T01:28:59+00:00

This patch tries to creates a common structure initialization within the cpupower tool. Previously the ``struct option`` was initialized using `designated initializer` technique which was not needed. There were conflicting initialization methods seen with bench/main.c & others. Signed-off-by: Sriram Raghunathan Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: Enable disabled Cstates if they are below max latency

2015-11-02T01:28:59+00:00

cpupower idle-set -D currently only disables all C-states that have a higher latency than the specified . But if deep sleep states were already disabled and have a lower latency, they should get enabled again. For example: This call: cpupower idle-set -D 30 disables all C-states with a higher or equal latency than 30. If one then calls: cpupower idle-set -D 100 C-states with a latency between 30-99 will get enabled again with this patch now. It is ensured that only C-states with a latency of 100 and higher are disabled. Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: Remove debug message when using cpupower idle-set -D switch

2015-11-02T01:28:59+00:00

Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki