linux/drivers/powercap, branch v4.11

powercap / RAPL: Add Knights Mill CPUID

2016-11-30T22:41:33Z

Add Knights Mill (KNM) to the list of CPUIDs supported by intel_rapl Signed-off-by: Piotr Luc Reviewed-by: Dave Hansen Signed-off-by: Rafael J. Wysocki

powercap/intel_rapl: fix and tidy up error handling

2016-11-28T23:02:29Z

Commit e1399ba20eee ("powercap / RAPL: handle missing MSRs") added contraint_to_pl() function to return index into an array. But it can potentially return -EINVAL if powercap layer sends an out of range constraint ID. This patch adds sanity check. Unnecessary RAPL domain pointer check is removed since it must be initialized before calling rapl_unit_xlate(). Fixes: e1399ba20eee ("powercap / RAPL: handle missing MSRs") Reported-by: Odzioba, Lukasz Reported-by: Koss, Marcin Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap/intel_rapl: Track active CPUs internally

2016-11-24T20:58:32Z

The ability of the CPU hotplug code to stop online/offline at each step makes it necessary to track the activated CPUs in a package directly, because outerwise a CPU offline callback can find CPUs which have already executed the offline callback, but are not yet marked offline in the topology mask. That could make such a CPU the package leader and in case that CPU goes fully offline leave the package lead orphaned. Signed-off-by: Thomas Gleixner Tested-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap/intel_rapl: Cleanup duplicated init code

2016-11-24T20:58:32Z

The whole init/exit code is a duplicate of the cpuhotplug code. So we can just let the hotplug code do the actual work of setting up and tearing down the domains. This also restores the package hardware when a package is removed during hotplug instead of leaving it in the last configured state and only reset it when the driver is removed. Signed-off-by: Thomas Gleixner Tested-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap/intel rapl: Convert to hotplug state machine

2016-11-24T20:58:32Z

Install the callbacks via the state machine as a first step. The init/exit code is a duplicate of the hotplug code. This is cleaned up in a consecutive patch. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Tested-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap/intel_rapl: Propagate error code when registration fails

2016-11-24T20:58:31Z

If rapl_package_register_powercap() fails in rapl_add_package() the function happily returns 0. Capture the error code and propagate it. Signed-off-by: Thomas Gleixner Tested-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap/intel_rapl: Add missing domain data update on hotplug

2016-11-24T20:58:31Z

The domain data of packages is only updated at init time, but new packages created by hotplug miss that treatment. Add it there and remove the global update at init time, because it's now obsolete. The more interesting question is why rapl_update_domain_data() exists at all as nothing ever uses that data. Signed-off-by: Thomas Gleixner Tested-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

x86/cpu: Rename Merrifield2 to Moorefield

2016-09-08T06:13:08Z

Merrifield2 is actually Moorefield. Rename it accordingly and drop tail digit from Merrifield1. Signed-off-by: Andy Shevchenko Cc: Dave Hansen Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20160906184254.94440-1-andriy.shevchenko@linux.intel.com Signed-off-by: Ingo Molnar

powercap / RAPL: Add support for Ivy Bridge server

2016-06-25T01:00:58Z

It's confirmed that RAPL works as expected on Ivy Bridge servers. Tested against processor: Intel(R) Xeon(R) CPU E5-2697 v2 @2.70GHz Signed-off-by: Xiaolong Wang Signed-off-by: Rafael J. Wysocki

powercap / RAPL: add support for Denverton

2016-06-14T23:37:48Z

Denverton micro server is Atom-based, but its RAPL interface is compatible with Core-based CPUs. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki