On Mon, Sep 21, 2015 at 09:30:49PM +0200, Frederic Weisbecker wrote:
> On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote:
> > Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU
> > readers
> >
> > Because preempt_disable() maps to barrier() for non-debug builds,
>
On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote:
> Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU
> readers
>
> Because preempt_disable() maps to barrier() for non-debug builds,
> it forces the compiler to spill and reload registers. Because Tree
> RCU and
On Fri, Sep 11, 2015 at 02:59:37PM -0700, Paul E. McKenney wrote:
>
> Queued for v4.4, thank you! Please see below for updated commit log,
> and please let me know if there are any problems with it.
>
Looks great to me! Thank you ;-)
Regards,
Boqun
> --
> Hi Paul
>
> On Thu, Sep 10, 2015 at 10:16:49AM -0700, Paul E. McKenney wrote:
> > On Thu, Sep 10, 2015 at 06:25:13PM +0800, Boqun Feng wrote:
> [snip]
> > >
> > > Code here is:
> > >
> > > #ifdef CONFIG_TINY_RCU
> > > # ifdef CONFIG_PREEMPT_COUNT
> > > VM_BUG_ON(!in_atomic()); <-- BUG trigge
Hi Paul
On Thu, Sep 10, 2015 at 10:16:49AM -0700, Paul E. McKenney wrote:
> On Thu, Sep 10, 2015 at 06:25:13PM +0800, Boqun Feng wrote:
[snip]
> >
> > Code here is:
> >
> > #ifdef CONFIG_TINY_RCU
> > # ifdef CONFIG_PREEMPT_COUNT
> > VM_BUG_ON(!in_atomic()); <-- BUG triggered here.
> > # endi
On Thu, Sep 10, 2015 at 06:25:13PM +0800, Boqun Feng wrote:
> Hi Fengguang,
>
> On Thu, Sep 10, 2015 at 08:57:08AM +0800, Fengguang Wu wrote:
> > Greetings,
> >
> > 0day kernel testing robot got the below dmesg and the first bad commit is
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/p
Hi Fengguang,
On Thu, Sep 10, 2015 at 08:57:08AM +0800, Fengguang Wu wrote:
> Greetings,
>
> 0day kernel testing robot got the below dmesg and the first bad commit is
>
> https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
> dev.2015.09.01a
>
> commit d0a795e7964cca98fbefefef
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