[PATCH v2 0/2] Reduce IPI calls for remote msr access

[Jacob Pan]

IPI calls to access MSRs on remote CPUs are expensive. So add a lib call
for read/modify/write access and use it in Intel RAPL driver.

Changes since v1:
	(based on feedback from Thomas Gleixner)
	- remove duplicated !CONFIG_SMP code
	- rename variables
	- added a check for local CPU before searching for active CPU oni
	  the package

Jacob Pan (2):
  x86/msr: add on cpu read/modify/write function
  powercap/rapl: reduce ipi calls

 arch/x86/include/asm/msr.h    | 13 ++++++++
 arch/x86/lib/msr-smp.c        | 34 +++++++++++++++++++
 arch/x86/lib/msr.c            | 18 ++++++++++
 drivers/powercap/intel_rapl.c | 77 +++++++++++++++++++++++--------------------
 4 files changed, 107 insertions(+), 35 deletions(-)

-- 
1.9.1