kernel.git/tools/power/cpupower/utils/helpers, branch linux-4.4.y

cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores

2017-05-14T11:32:54Z

commit 4cca0457686e4ee1677d69469e4ddfd94d389a80 upstream. The switch that conditionally sets CPUPOWER_CAP_HAS_TURBO_RATIO and CPUPOWER_CAP_IS_SNB flags is missing a break, so all cores get both flags set and an assumed base clock of 100 MHz for turbo values. Reported-by: GSR Tested-by: GSR References: https://bugs.debian.org/859978 Fixes: 8fb2e440b223 (cpupower: Show Intel turbo ratio support via ...) Signed-off-by: Ben Hutchings Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman

cpupower: cpupower monitor reports uninitialized values for offline cpus

2015-11-02T01:28:59Z

[root@hp-dl980g7-02 linux]# cpupower monitor ... 5472| 0| 1|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline 10567| 0| 159|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline 1661206560|859272560| 150|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline 1661206560|943093104| 140|******|******|******|******|| 0.00| 0.00| 0.00| 0.00| 0.00 *is offline because of this cpupower also holds the incorrect value for the number of physical packages in the machine Changed cpupower to initialize the values of an offline cpu's socket and core to -1, warn the user that one or more cpus is/are offline and not print statistics for offline cpus. This fix hides offlined cores where topology cannot be accessed. With a recent kernel patch suggested from Prarit Bhargava it may be possible that soft offlined cores' topology can still be parsed. This patch would then show which cores in which package/socket are offline, when sane toplogoy information is available. Signed-off-by: Jacob Tanenbaum Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

tools: cpupower: Fix error when running cpupower monitor

2015-08-28T23:38:16Z

get_cpu_topology() tries to get topology info from all cpus by reading files in the topology sysfs dir. If a cpu is offlined, since it doesn't have topology dir, this function fails and returns -1. This causes functions relying on get_cpu_topology() to fail. For example- $ cpupower monitor Cannot read number of available processors Fix this by skipping fetching topology info for offline cpus. Signed-off-by: Shreyas B. Prabhu Reported-by: Pavaman Subramaniyam Acked-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: fix breakage from libpci API change

2015-04-15T19:54:26Z

libpci 3.3.0 introduced an additional member in the pci_filter struct which needs to be initialized to -1 to get the same behavior as before the API change. The libpci internal helpers got updated accordingly, but as the cpupower pci helpers initialized the struct themselves the behavior changed. Use the libpci helper pci_filter_init() to fix this and guard against similar breakages in the future. This fixes probing of the AMD fam12h/14h cpuidle monitor on systems with libpci >= 3.3.0. Signed-off-by: Lucas Stach Acked-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

tools / cpupower: Fix no idle state information return value

2014-12-19T22:01:12Z

sysfs_get_idlestate_count() returns an unsigned int. Returning -ENODEV is not the right thing to do here, and in any case is handled the same way as if there are no states found. Signed-off-by: Prarit Bhargava Acked-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

PM / tools: cpupower: drop negativity check on unsigned value

2014-07-19T19:41:17Z

Link: https://bugzilla.kernel.org/show_bug.cgi?id=80621 Reported-by: David Binderman Signed-off-by: Andrey Utkin Signed-off-by: Rafael J. Wysocki

tools: cpupower: fix wrong err msg not supported vs not available

2013-11-25T22:10:50Z

idlestates in sysfs are counted from 0. This fixes a wrong error message. Current behavior on a machine with 4 sleep states is: cpupower idle-set -e 4 Idlestate 4 enabled on CPU 0 -----Wrong--------------------- cpupower idle-set -e 5 Idlestate enabling not supported by kernel -----Must and now will be ----- cpupower idle-set -e 5 Idlestate 6 not available on CPU 0 ------------------------------- cpupower idle-set -e 6 Idlestate 6 not available on CPU 0 Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: Implement disabling of cstate interface

2013-07-04T23:52:19Z

Latest kernel allows to disable C-states via: /sys/devices/system/cpu/cpuX/cpuidle/stateY/disable This patch provides lower level sysfs access functions to make use of this interface. A later patch will implement the higher level stuff. Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: Make idlestate usage unsigned

2013-07-04T23:52:19Z

Use unsigned int as the data type for some variables related to CPU idle states which allows the code to be simplified slightly. [rjw: Changelog] Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki

cpupower: IvyBridge (0x3a and 0x3e models) support

2012-11-27T22:07:20Z

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