I made some changes to the series:
- Handle possible softirq interrupting idle on local_bh_enable()
- Have a dedicated vtime.h header file
- Do some clearer ifdeffery
- Use an irqsafe vtime_account_system() on kvm.
Patches 1/5 and 5/5 are something I really think we want. Patch 3/5
implicitly fixes a bug in s390. If you prefer I can just fix s390
and drop the rest of the patch that is just a micro-optimization
in the kvm guest switch path.
The rest of the patches is micro optimizations on the irq path.
If you think these are pointless over-optimizations, I can just drop
these and only keep 1/5, rebase 5/5 and extract the bug fix in s390 that
resides in 3/5.
Otherwise I'll send a pull request to Ingo in a week or so.
If you want to test, it is pullable from:
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
cputime/cleanups-v3
Tested on powerpc and x86. Built tested on ia64. s390 doesn't build defconfig
on v3.7-rc2.
Frederic Weisbecker (5):
vtime: Gather vtime declarations to their own header file
vtime: Provide an irq safe version of vtime_account_system()
kvm: Directly account vtime to system on guest switch
cputime: Specialize irq vtime hooks
cputime: Separate irqtime accounting from generic vtime
arch/s390/kernel/vtime.c | 4 +++
include/linux/hardirq.h | 15 ++----------
include/linux/kernel_stat.h | 9 +-------
include/linux/kvm_host.h | 12 +++++++++-
include/linux/vtime.h | 48 +++++++++++++++++++++++++++++++++++++++++++
kernel/sched/cputime.c | 13 +++++++++-
kernel/softirq.c | 6 ++--
7 files changed, 80 insertions(+), 27 deletions(-)
create mode 100644 include/linux/vtime.h
--
1.7.5.4
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