[PATCH v2 00/10] hwmon: (fam15h_power) Introduce an accumulated power reporting algorithm

From: Huang Rui <ray.huang@amd.com>
To: "Borislav Petkov" <bp@suse.de>,
	"Guenter Roeck" <linux@roeck-us.net>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Jean Delvare" <jdelvare@suse.de>,
	"Andy Lutomirski" <luto@amacapital.net>,
	"Andreas Herrmann" <herrmann.der.user@gmail.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@kernel.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	"Len Brown" <lenb@kernel.org>,
	"John Stultz" <john.stultz@linaro.org>,
	"Frédéric Weisbecker" <fweisbec@gmail.com>
Cc: <lm-sensors@lm-sensors.org>, <linux-kernel@vger.kernel.org>,
	<x86@kernel.org>,
	Andreas Herrmann <herrmann.der.user@googlemail.com>,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>,
	Borislav Petkov <bp@alien8.de>,
	Fengguang Wu <fengguang.wu@intel.com>,
	Aaron Lu <aaron.lu@intel.com>, Tony Li <tony.li@amd.com>,
	Huang Rui <ray.huang@amd.com>
Subject: [PATCH v2 00/10] hwmon: (fam15h_power) Introduce an accumulated power reporting algorithm
Date: Tue, 20 Oct 2015 10:28:19 +0800	[thread overview]
Message-ID: <1445308109-17970-1-git-send-email-ray.huang@amd.com> (raw)

Hi all,

This serial of patches introduces an accumulated power reporting
algorithm. It will calculate the average power consumption for the
processor. The cpu feature flag is CPUID.8000_0007H:EDX[12].

This algorithm is used to test the comparison of processor power
consumption with between MWAITX delay and TSC delay on AMD Carrizo
platforms.

Reference:
http://marc.info/?l=linux-kernel&m=143874573111310&w=2

Commit f96756 at tip ("x86/asm: Add MONITORX/MWAITX instruction support")
Commit b466bd at tip ("x86/asm/delay: Introduce an MWAITX-based delay with a configurable timer")

V1: http://marc.info/?l=linux-kernel&m=144066380613299&w=2

Changes from v1 -> v2:
- Move fam15h_power_groups and fam15h_power_group into fam15h_power_data to
  avoid overwrite on multi-CPU system.
- Rename FAM15H_MIN_NUM_ATTRS macro and fix return error code.
- Remove unnecessary warning print.
- Adds do_read_registers_on_cu to do all the read to all MSRs and run it on one
  of the online cores on each compute unit with smp_call_function_many().
- Use power1_average and power1_average_interval standard entry
  instread of power1_acc
- Fix the CPU-hotplug case.

A simple example:

ray@hr-ub:~/tip$ sensors
fam15h_power-pci-00c4
Adapter: PCI adapter
power1:       23.73 mW (avg = 634.63 mW, interval =   0.01 s)
                       (crit =  15.00 W)

...

These patches are rebased on groeck/hwmon-next.

Thanks,
Rui

Huang Rui (10):
  hwmon: (fam15h_power) Refactor attributes for dynamically added
  hwmon: (fam15h_power) Enable power1_input on AMD Carrizo
  hwmon: (fam15h_power) Add max compute unit accumulated power
  x86, amd: add accessor for number of cores per compute unit
  hwmon: (fam15h_power) Add compute unit accumulated power
  hwmon: (fam15h_power) Add ptsc counter value for accumulated power
  hwmon: (fam15h_power) Introduce a cpu accumulated power reporting
    algorithm
  hwmon: (fam15h_power) Add documentation for previous TDP reporting
  hwmon: (fam15h_power) Add documentation for accumulated power
    algorithm
  MAINTAINERS: change the maintainer of fam15h_power driver

 CREDITS                          |   8 ++
 Documentation/hwmon/fam15h_power |  56 +++++++-
 MAINTAINERS                      |   4 +-
 arch/x86/include/asm/msr-index.h |   1 +
 arch/x86/include/asm/processor.h |   1 +
 arch/x86/kernel/cpu/amd.c        |  19 ++-
 drivers/hwmon/fam15h_power.c     | 274 +++++++++++++++++++++++++++++++++++----
 7 files changed, 335 insertions(+), 28 deletions(-)

-- 
1.9.1