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SubjectRe: [PATCH 0/7 v4] rcu: Fix some rcu uses in extended quiescent state
On Mon, Sep 26, 2011 at 12:19:05PM +0200, Frederic Weisbecker wrote:
> Hi Paul,
>
> Two fixes added in that set, the first two patches:
>
> - The check on uses under extended quiescent states was buggy
> - One more illegal use of RCU fixed, from inside tick_nohz_stop_sched_tick()
>
> It has survived one day and one night of rcutorture in x86-64
> with periodic cpu hotplug onlining/offlining...

Very good! I have queued these and pushed them to -rcu on github
(https://github.com/paulmckrcu/linux) branch rcu/dynticks.

Some of the Power boxes are now back in the land of the living, and
will hopefully work their way through their testing backlogs some time
soon. ;-) At which point, I will restart PowerPC testing.

Thanx, Paul

> No test in powerpc yet though... So I don't know yet why
> you got an rcutorture failure.
>
> Frederic Weisbecker (7):
> rcu: Fix preempt-unsafe debug check of rcu extended quiescent state
> rcu: Fix early call to rcu_enter_nohz() on tick stopping
> nohz: Separate out irq exit and idle loop dyntick logic
> nohz: Allow rcu extended quiescent state handling seperately from
> tick stop
> 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 | 4 +-
> 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 | 12 ++-
> kernel/rcutree.c | 10 ++-
> kernel/softirq.c | 4 +-
> kernel/time/tick-sched.c | 120 +++++++++++++++++++++---------
> 25 files changed, 147 insertions(+), 88 deletions(-)
>
> --
> 1.7.5.4
>
> --
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