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From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
To: linux-kernel@vger.kernel.org
Cc: Fernando Luis Vazquez Cao <fernando_b1@lab.ntt.co.jp>,
	Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Arjan van de Ven <arjan@linux.intel.com>,
	Oleg Nesterov <oleg@redhat.com>,
	Preeti U Murthy <preeti@linux.vnet.ibm.com>
Subject: [PATCH 0/2 v2] nohz: fix idle accounting in NO_HZ kernels
Date: Mon, 31 Mar 2014 11:01:42 +0900	[thread overview]
Message-ID: <5338CC86.9080602@jp.fujitsu.com> (raw)

Hi all,

This patch set (rebased on v3.14-rc8) will fix an issue that
idle/iowait of /proc/stat can go backward. Originally reported
by Tetsuo and Fernando at last year, Mar 2013.

v2 have Preeti's Reviewed-by (Thanks!).
Of course still reviews are welcome.

Thanks,
H.Seto


Hidetoshi Seto (2):
      nohz: use seqlock to avoid race on idle time stats v2
      nohz, procfs: introduce get_cpu_idle/iowait_time_coarse

 fs/proc/stat.c           |   16 ++---
 include/linux/tick.h     |    5 +
 kernel/time/tick-sched.c |  197 ++++++++++++++++++++++++++++++++++++++++------
 3 files changed, 183 insertions(+), 35 deletions(-)


             reply	other threads:[~2014-03-31  2:02 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-31  2:01 Hidetoshi Seto [this message]
2014-03-31  2:08 ` [PATCH 1/2] nohz: use seqlock to avoid race on idle time stats v2 Hidetoshi Seto
2014-04-02 19:35   ` Denys Vlasenko
2014-04-03  7:02     ` Hidetoshi Seto
2014-04-03  9:51       ` Denys Vlasenko
2014-04-04  2:47         ` Hidetoshi Seto
2014-04-04 16:03     ` Frederic Weisbecker
2014-04-04 17:02       ` Denys Vlasenko
2014-04-05 10:08         ` Frederic Weisbecker
2014-04-05 14:56           ` Denys Vlasenko
2014-04-07 18:17             ` Frederic Weisbecker
2014-04-09 12:49               ` Denys Vlasenko
2014-04-09 13:42                 ` Peter Zijlstra
2014-03-31  2:09 ` [PATCH 2/2] nohz, procfs: introduce get_cpu_idle/iowait_time_coarse Hidetoshi Seto

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