linux/drivers/powercap, branch v4.1

powercap / RAPL: Add support for Intel Skylake processors

2015-04-15T21:06:16Z

Signed-off-by: Brian Bian Acked-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: mark rapl_ids array as __initconst

2015-04-11T00:21:15Z

The RAPL ids are only tested in rapl_init() which is itself an __init function. For the MODULE_DEVICE_TABLE() file2alias doesn't care about the section, just about the symbol name. Therefore it's safe to mark the rapl_ids[] array as __initconst so its memory can be released after initialization is done. Signed-off-by: Mathias Krause Acked-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: add ID for Broadwell server

2015-04-11T00:17:19Z

Validated RAPL functions on this platform. Add support to driver. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: handle domains with different energy units

2015-03-13T22:18:44Z

The current driver assumes all RAPL domains within a CPU package have the same energy unit. This is no longer true for HSW server CPUs since DRAM domain has is own fixed energy unit which can be different than the package energy unit enumerated by package power MSR. In fact, the default HSW EP package power unit is 61uJ whereas DRAM domain unit is 15.3uJ. The result is that DRAM power consumption is counted 4x more than real power reported by energy counters, similarly for max_energy_range_uj of DRAM domain. This patch adds domain specific energy unit per cpu type, it allows domain energy unit to override package energy unit if non zero. Please see this document for details. "Intel Xeon Processor E5-1600 and E5-2600 v3 Product Families, Volume 2 of 2. Datasheet, September 2014, Reference Number: 330784-001 " Signed-off-by: Jacob Pan Cc: 3.10+ # 3.10+ Signed-off-by: Rafael J. Wysocki

powercap / RAPL: add IDs for future Xeon CPUs

2014-12-17T01:35:42Z

Enable RAPL driver on Xeon cpu id 0x56. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: fix build dependency on iosf_mbi

2014-11-12T20:09:19Z

RAPL on Atom depends on IOSF_MBI driver for setting floor frequency. This patch adds explicit dependency on CONFIG_IOSF_MB. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: add new model ids

2014-11-11T22:40:06Z

Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: handle atom and core differences

2014-11-11T22:40:06Z

RAPL implementation on Atom has made some changes that are not compatible with Core CPUs. Specifically, it is different in the way units are computed as well as floor frequency is enforced. This patch uses the per CPU model functions to handle the differences. Intel Software Developers' Manual has also been updated to reflect the changes in Table 35-7 V3C. Signed-off-by: Ajay Thomas Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: abstract per cpu type functions

2014-11-11T22:40:06Z

RAPL implementations may vary slightly between Core and Atom CPUs. There are also potential differences among generations of CPUs within the family. This patch adds a per model structure to abstract the differences such that variations can be handled cleanly. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki

powercap / RAPL: change domain detection message

2014-09-02T23:29:00Z

Many CPUs do not support complete set of RAPL domains, as a result this detection failed message is very misleading and can be annoying. [ 5.082632] intel_rapl: RAPL domain core detection failed [ 5.088370] intel_rapl: RAPL domain uncore detection failed So lower the warning message to info and only print out the RAPL domains that are supported. Signed-off-by: Jacob Pan Signed-off-by: Rafael J. Wysocki