[RFC/PATCH 0/5] context_tracking: prerequisites for ARM support

From: Kevin Hilman
Date: Wed Feb 20 2013 - 14:41:49 EST


Here is a first pass at some changes needed in order to add ARM

I have another series coming that instruments the syscalls, exceptions
etc. on ARM also, but this one is just to get some prerequisites out
for broader discussion.

This series applies on top of your 3.8-rc6-nohz4 branch, and is also available

git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux.git wip/arm-nohz/prereq

I'm aware of the >80 column warnings from checkpatch on the atomic64
conversion patch, but wanted to get some feedback on this approach
before fixing all those up. Maybe some simpler wrappers in
kernel_stat.h would make this a bit cleaner?


Kevin Hilman (5):
context tracking: conditionalize guest support based on CONFIG_KVM
kernel_cpustat: convert to atomic 64-bit accessors
virt CPU accounting: Kconfig: drop 64-bit requirment
cputime: use do_div() for nsec resolution conversion helpers
ARM: Kconfig: allow virt CPU accounting

arch/arm/Kconfig | 1 +
fs/proc/stat.c | 36 +++++++++++++-------------
fs/proc/uptime.c | 2 +-
include/asm-generic/cputime_nsecs.h | 51 +++++++++++++++++++++++++++----------
include/linux/kernel_stat.h | 2 +-
init/Kconfig | 2 +-
kernel/context_tracking.c | 4 +++
kernel/sched/core.c | 10 ++++----
kernel/sched/cputime.c | 24 ++++++++---------
9 files changed, 80 insertions(+), 52 deletions(-)


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