linux-kernel - [PATCH 0/6] nohz: Move nohz kick out of scheduler IPI, v8

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Message-Id: <1402413309-3415-1-git-send-email-fweisbec@gmail.com>
Date:	Tue, 10 Jun 2014 17:15:03 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Kevin Hilman <khilman@...aro.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH 0/6] nohz: Move nohz kick out of scheduler IPI, v8

So this set happens to have more changes than expected because I
found out that the timer list full nohz kick also relies on the scheduler
IPI. So I had to convert it as well, hence a few more change splitups.

Changes:

* Check also raised lists from irq_work_needs_cpu() (thanks Peterz)

* Comment on SMP functions priority in
  generic_smp_call_function_single_interrupt() because IPI callbacks there
  are often synchronous as opposed to irq works. (thanks Peterz)

* s/native_send_call_func_single_ipi/native_send_call_func_single_ipi
  (thanks Eric Dumazet)

* Only build irq_work_queue_on() on CONFIG_SMP, fixes some broken builds

* Convert full nohz timer list kick

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
	timers/nohz-irq-work-v6

Thanks,
	Frederic
---

Frederic Weisbecker (6):
      irq_work: Split raised and lazy lists
      irq_work: Implement remote queueing
      nohz: Support nohz full remote kick
      nohz: Switch to nohz full remote kick on timer enqueue
      nohz: Use nohz own full kick on 2nd task enqueue
      nohz: Use IPI implicit full barrier against rq->nr_running r/w


 include/linux/irq_work.h |  5 ++++
 include/linux/tick.h     |  9 +++++-
 kernel/irq_work.c        | 76 ++++++++++++++++++++++++++++++------------------
 kernel/sched/core.c      | 22 ++++++++------
 kernel/sched/sched.h     | 12 ++++++--
 kernel/smp.c             |  9 ++++++
 kernel/time/tick-sched.c | 10 ++++---
 7 files changed, 97 insertions(+), 46 deletions(-)
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