linux-kernel - [PATCH 0/4 v2] rcu: Fix some rcu uses in extended quiescent state

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Message-Id: <1313861452-24783-1-git-send-email-fweisbec@gmail.com>
Date:	Sat, 20 Aug 2011 19:30:48 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"H. Peter Anvin" <hpa@...or.com>,
	David Miller <davem@...emloft.net>,
	Chris Metcalf <cmetcalf@...era.com>,
	Guan Xuetao <gxt@...c.pku.edu.cn>,
	Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>,
	Mike Frysinger <vapier@...too.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Russell King <linux@....linux.org.uk>,
	Paul Mackerras <paulus@...ba.org>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Paul Mundt <lethal@...ux-sh.org>, Ingo Molnar <mingo@...e.hu>
Subject: [PATCH 0/4 v2] rcu: Fix some rcu uses in extended quiescent state

I have changed a bit the first patch by adding a "rcu_ext_qs"
parameter in tick_nohz_enter_idle() so we just need to toggle that
parameter to false when rcu_enter_nohz() is called separately.
That's less confusing and more consistant than calling
tick_nohz_stop_sched_tick() instead of tick_nohz_enter_idle()
when rcu dynticks idle mode is handled separately.

It's an important enough change that I thought I had to drop
all the acks in the first patch.

Also it adds a new fix for a new bug detected in patch 4.

The powerpc case is trickier so I prefer to get that pile
handled before.

Thanks.

Frederic Weisbecker (4):
  nohz: Split extended quiescent state handling from nohz switch
  x86: Enter rcu extended qs after idle notifier call
  x86: Call idle notifier after irq_enter()
  rcu: Fix early call to rcu_irq_exit()

 arch/arm/kernel/process.c                |    4 +-
 arch/avr32/kernel/process.c              |    4 +-
 arch/blackfin/kernel/process.c           |    4 +-
 arch/microblaze/kernel/process.c         |    4 +-
 arch/mips/kernel/process.c               |    4 +-
 arch/powerpc/kernel/idle.c               |    4 +-
 arch/powerpc/platforms/iseries/setup.c   |    8 +++---
 arch/s390/kernel/process.c               |    4 +-
 arch/sh/kernel/idle.c                    |    2 +-
 arch/sparc/kernel/process_64.c           |    4 +-
 arch/tile/kernel/process.c               |    4 +-
 arch/um/kernel/process.c                 |    4 +-
 arch/unicore32/kernel/process.c          |    4 +-
 arch/x86/kernel/apic/apic.c              |    6 ++--
 arch/x86/kernel/apic/io_apic.c           |    2 +-
 arch/x86/kernel/cpu/mcheck/mce.c         |    2 +-
 arch/x86/kernel/cpu/mcheck/therm_throt.c |    2 +-
 arch/x86/kernel/cpu/mcheck/threshold.c   |    2 +-
 arch/x86/kernel/irq.c                    |    6 ++--
 arch/x86/kernel/process_32.c             |    4 +-
 arch/x86/kernel/process_64.c             |    9 ++++++-
 include/linux/tick.h                     |    9 ++++---
 kernel/softirq.c                         |    2 +-
 kernel/time/tick-sched.c                 |   31 +++++++++++++++++++++++++----
 24 files changed, 78 insertions(+), 51 deletions(-)

-- 
1.7.5.4

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