Re: [RFC PATCH 00/11] rcu: Userspace RCU extended quiescent state v2
From: Frederic Weisbecker
Date: Mon Jul 16 2012 - 18:57:40 EST
On Mon, Jul 16, 2012 at 03:15:56PM -0700, Paul E. McKenney wrote:
> On Wed, Jul 11, 2012 at 08:26:29PM +0200, Frederic Weisbecker wrote:
> > Hi,
> > There are significant changes this time. I reverted back to using
> > a TIF flag to hook on syscalls slow path and put the hooks on
> > high level exception handlers instead of low level ones.
> > It makes the code more portable between x86-32 and x86-64, it
> > makes the hooks clearer and easier to review and the overhead
> > is lowered in the off-case. This can be even better if we use
> > jump labels later.
> Thank you, Frederic, I have queued these:
> git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/idle
> I had to rework patch 4 a bit to take into account that I dropped the
> rcu_switch_from() patch, please check it to make sure that I didn't
> rework it out of existence.
> Thanx, Paul
Ok so it crashed once and I got 3 successful reboots afterward.
Not sure what was the issue, not sure that's even due to my patches.
Anyway, I'll tell you if I see the crash again.
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