[PATCH 0/2] combine remote cpu msr access

From: Jacob Pan
Date: Fri Dec 11 2015 - 17:42:10 EST

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.

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

arch/x86/include/asm/msr.h | 24 +++++++++++++++
arch/x86/lib/msr-smp.c | 47 ++++++++++++++++++++++++++++
drivers/powercap/intel_rapl.c | 71 ++++++++++++++++++++++---------------------
3 files changed, 108 insertions(+), 34 deletions(-)


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