linux-kernel - [RFC GIT PULL] nohz: Full dynticks rq clock handling

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Message-Id: <1365266760-24725-1-git-send-email-fweisbec@gmail.com>
Date:	Sat,  6 Apr 2013 18:45:53 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Alessio Igor Bogani <abogani@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chris Metcalf <cmetcalf@...era.com>,
	Christoph Lameter <cl@...ux.com>,
	Geoff Levand <geoff@...radead.org>,
	Gilad Ben Yossef <gilad@...yossef.com>,
	Hakan Akkan <hakanakkan@...il.com>,
	Li Zhong <zhong@...ux.vnet.ibm.com>,
	Namhyung Kim <namhyung.kim@....com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul Turner <pjt@...gle.com>, Mike Galbraith <efault@....de>
Subject: [RFC GIT PULL] nohz: Full dynticks rq clock handling

Hi,

So this is the part that handles the rq clock on full dynticks CPUs.
May be some of the update_nohz_rq_clock() calls here could even
apply to mainline for dynticks idle CPUs.

There are still two known places I need to look into for which I had patches
in my nohz tree but I need to have a deeper look into these (make the patch
saner, check if the problem should be fixed in mainline instead, etc...):

* http://git.kernel.org/cgit/linux/kernel/git/frederic/linux-dynticks.git/commit/?h=3.9-rc1-nohz1&id=36ca34d0d4ba0a9589cf3054a7df9f0879ddd6c5
* http://git.kernel.org/cgit/linux/kernel/git/frederic/linux-dynticks.git/commit/?h=3.9-rc1-nohz1&id=9c3af3b4104682217b1f602acb4efbab563ccf59

But otherwise this patchset handles the big bulk of rq clock handling.

This can be pulled from:

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
	timers/nohz-rqclock

Thanks.

---
Frederic Weisbecker (7):
  sched: Update rq clock on nohz CPU before migrating tasks
  sched: Update rq clock on nohz CPU before setting fair group shares
  sched: Update rq clock on tickless CPUs before calling
    check_preempt_curr()
  sched: Update rq clock earlier in unthrottle_cfs_rq
  sched: Update rq clock before idle balancing
  sched: Use an accessor to read rq clock
  sched: Debug nohz rq clock

 kernel/sched/core.c      |   30 +++++++++++++++++++++---
 kernel/sched/fair.c      |   55 ++++++++++++++++++++++++++--------------------
 kernel/sched/rt.c        |    8 +++---
 kernel/sched/sched.h     |   47 +++++++++++++++++++++++++++++++++++++++
 kernel/sched/stats.h     |    8 +++---
 kernel/sched/stop_task.c |    8 +++---
 lib/Kconfig.debug        |   11 +++++++++
 7 files changed, 127 insertions(+), 40 deletions(-)

-- 
1.7.5.4

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