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[GIT PULL] power utilities update

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  [GIT PULL] power utilities update Len Brown <lenb@kernel.org> - 2017-05-12 04:10 +0200
    [PATCH 2/5] x86: msr-index.h: define HWP.EPP values Len Brown <lenb@kernel.org> - 2017-05-12 04:10 +0200

#1640122 — [GIT PULL] power utilities update

Hi Rafael,

Please pull these power utilities patches.

The x86_energy_perf_policy(8) utility grows the ability
to manage HWP.EPP (and Hardware P-states, in-general),
on top of its previous ability to manage EPB.

Linux-4.11 grew the ability to disable the cpufreq sub-system entirely
with "cpufreq.off=1". On such a system, this utility
is a convenient way to enable HWP with no kernel cpufreq overhead:

sudo x86_energy_perf_policy --cpu all normal

During this effort, we noticed the EPP defaults hard-coded
into the intel_state driver were not optimal, so those are updated too.

thanks!
Len Brown, Intel Open Source Technology Center

The following changes since commit c470abd4fde40ea6a0846a2beab642a578c0b8cd:

  Linux 4.10 (2017-02-19 14:34:00 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git utilities

for you to fetch changes up to 3cedbc5a6d7f7c5539e139f89ec9f6e1ed668418:

  intel_pstate: use updated msr-index.h HWP.EPP values (2017-05-11 21:27:53 -0400)

----------------------------------------------------------------
Len Brown (5):
      x86: msr-index.h: define EPB mid-points
      x86: msr-index.h: define HWP.EPP values
      x86: msr-index.h: fix shifts to ULL results in HWP macros.
      tools/power x86_energy_perf_policy: support HWP.EPP
      intel_pstate: use updated msr-index.h HWP.EPP values

 arch/x86/include/asm/msr-index.h                   |   18 +-
 drivers/cpufreq/intel_pstate.c                     |   34 +-
 tools/power/x86/x86_energy_perf_policy/Makefile    |   27 +-
 .../x86_energy_perf_policy.8                       |  241 +++-
 .../x86_energy_perf_policy.c                       | 1504 +++++++++++++++++---
 5 files changed, 1527 insertions(+), 297 deletions(-)

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#1640123 — [PATCH 2/5] x86: msr-index.h: define HWP.EPP values

From: Len Brown <len.brown@intel.com>

The Hardware Performance State request MSR has a field
to express the "Energy Performance Preference" (HWP.EPP).

Decode that field so the definition may be shared by
by the intel_pstate driver and any utilities that
decode the same register.

Signed-off-by: Len Brown <len.brown@intel.com>
---
 arch/x86/include/asm/msr-index.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index a92d9bd154f6..50c0c3204a92 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -239,6 +239,10 @@
 #define HWP_MAX_PERF(x) 		((x & 0xff) << 8)
 #define HWP_DESIRED_PERF(x)		((x & 0xff) << 16)
 #define HWP_ENERGY_PERF_PREFERENCE(x)	((x & 0xff) << 24)
+#define HWP_EPP_PERFORMANCE		0x00
+#define HWP_EPP_BALANCE_PERFORMANCE	0x80
+#define HWP_EPP_BALANCE_POWERSAVE	0xC0
+#define HWP_EPP_POWERSAVE		0xFF
 #define HWP_ACTIVITY_WINDOW(x)		((x & 0xff3) << 32)
 #define HWP_PACKAGE_CONTROL(x)		((x & 0x1) << 42)
 
-- 
2.11.0.161.g6610af872

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