mbox series

[v1,0/4] x86: Remove direct use of MSR_IA32_ENERGY_PERF_BIAS

Message ID 20201029190259.3476-1-bp@alien8.de (mailing list archive)
Headers show
Series x86: Remove direct use of MSR_IA32_ENERGY_PERF_BIAS | expand

Message

Borislav Petkov Oct. 29, 2020, 7:02 p.m. UTC 
From: Borislav Petkov <bp@suse.de>

Hi,

here's v2 with some of Shuah's comments integrated.

If no one has anything against it, I'll route them all through tip.

Thx.

---
Changelog:

v0:
--

here's something from my todo list: remove all in-kernel tools use of
that MSR and lastly drop it from the allowed-MSRs-list in the filtering.

Out-of-tree tools should do a similar, trivial conversion.

Constructive comments are, as always, appreciated.

Borislav Petkov (4):
  tools/power/cpupower: Read energy_perf_bias from sysfs
  tools/power/turbostat: Read energy_perf_bias from sysfs
  tools/power/x86_energy_perf_policy: Read energy_perf_bias from sysfs
  x86/msr: Do not allow writes to MSR_IA32_ENERGY_PERF_BIAS

 arch/x86/kernel/msr.c                         |   3 -
 tools/power/cpupower/lib/cpupower.c           |  23 +++-
 tools/power/cpupower/lib/cpupower_intern.h    |   5 +
 tools/power/cpupower/utils/cpupower-info.c    |   2 +-
 tools/power/cpupower/utils/cpupower-set.c     |   2 +-
 tools/power/cpupower/utils/helpers/helpers.h  |   8 +-
 tools/power/cpupower/utils/helpers/misc.c     |  48 ++++++++
 tools/power/cpupower/utils/helpers/msr.c      |  28 -----
 tools/power/x86/turbostat/turbostat.c         |  29 ++++-
 .../x86_energy_perf_policy.c                  | 109 ++++++++++++++++--
 10 files changed, 204 insertions(+), 53 deletions(-)