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    SubjectRe: [PATCH 0/3] rcu: Fix some rcu uses in extended quiescent state
    On Fri, Jul 15, 2011 at 04:32:03PM -0700, Paul E. McKenney wrote:
    > On Mon, Jul 11, 2011 at 10:34:29PM +0200, Frederic Weisbecker wrote:
    > > Hi,
    > >
    > > First patch lays the ground to fix rcu uses in dyntick idle mode
    > > by splitting rcu extended qs state logic from tick nohz one.
    > >
    > > The rest fixes the misuses that RCU has detected for me in x86.
    >
    > These look good to me -- I have queued them and will try testing
    > them out.
    >
    > > I'll try to fix those Paul has detected in PowerPc.
    >
    > Looking forward to that one as well. ;-)
    >
    > It would be really cool if this approach could serve as RCU's idle-CPU
    > detection regardless of whether or not CONFIG_NO_HZ was set. For one
    > thing, this would simplify the RCU code that treats idle tasks as extended
    > quiescent states. Except during boot time. :-/

    For that we could just build rcu_enter_nohz() things on CONFIG_NO_HZ || CONFIG_PROVE_RCU.

    >
    > Thanx, Paul
    >
    > > Frederic Weisbecker (3):
    > > 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()
    > >
    > > 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 | 5 ++++
    > > include/linux/tick.h | 10 +++++--
    > > kernel/time/tick-sched.c | 36 ++++++++++++++++++++++++++---
    > > 23 files changed, 83 insertions(+), 46 deletions(-)
    > >
    > > --
    > > 1.7.5.4
    > >


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