[PATCH v4 0/2] nohz: fix idle accounting in NO_HZ kernels

From: Hidetoshi Seto
Date: Thu Apr 17 2014 - 05:36:00 EST


Hi all,

This patch set (rebased on v3.15-rc1) is my 4th try to fix an issue
that idle/iowait of /proc/stat can go backward. Originally reported
by Tetsuo and Fernando at last year, Mar 2013.

This v4 updates v3's approach, and adds description/comments to
make patch's intent to be clear (I hope so).

Of course still reviews are welcome.

Thanks,
H.Seto

Hidetoshi Seto (2):
nohz: make updating sleep stats local
nohz: delayed iowait accounting for nohz idle time stats

include/linux/tick.h | 6 +-
kernel/time/tick-sched.c | 179 ++++++++++++++++++++++++++++++++++------------
2 files changed, 136 insertions(+), 49 deletions(-)


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