From: Frederic Weisbecker <fweisbec@gmail.com>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Josh Triplett <josh@joshtriplett.org>,
LKML <linux-kernel@vger.kernel.org>,
Alessio Igor Bogani <abogani@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Avi Kivity <avi@redhat.com>, Chris Metcalf <cmetcalf@tilera.com>,
Christoph Lameter <cl@linux.com>,
Geoff Levand <geoff@infradead.org>,
Gilad Ben Yossef <gilad@benyossef.com>,
Hakan Akkan <hakanakkan@gmail.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
Kevin Hilman <khilman@ti.com>,
Max Krasnyansky <maxk@qualcomm.com>,
Peter Zijlstra <peterz@infradead.org>,
Stephen Hemminger <shemminger@vyatta.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sven-Thorsten Dietrich <thebigcorporation@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 6/6] x86: Exit RCU extended QS on notify resume
Date: Tue, 10 Jul 2012 11:18:39 +0200 [thread overview]
Message-ID: <20120710091836.GF8185@somewhere.redhat.com> (raw)
In-Reply-To: <20120708211707.GG2522@linux.vnet.ibm.com>
On Sun, Jul 08, 2012 at 02:17:07PM -0700, Paul E. McKenney wrote:
> On Fri, Jul 06, 2012 at 01:43:29PM -0700, Josh Triplett wrote:
> > On Fri, Jul 06, 2012 at 09:33:38AM -0700, Paul E. McKenney wrote:
> > > On Fri, Jul 06, 2012 at 02:00:18PM +0200, Frederic Weisbecker wrote:
> > > > --- a/arch/x86/Kconfig
> > > > +++ b/arch/x86/Kconfig
> > > > @@ -95,6 +95,7 @@ config X86
> > > > select KTIME_SCALAR if X86_32
> > > > select GENERIC_STRNCPY_FROM_USER
> > > > select GENERIC_STRNLEN_USER
> > > > + select HAVE_RCU_USER_QS if X86_64
> > >
> > > And I will bite yet again. Why only 64-bit kernels?
> >
> > Because HAVE_RCU_USER_QS requires an architecture-specific component,
> > and this patch series only added the necessary bits to entry_64.S.
>
> OK, please allow me to rephrase the question. Why only entry_64.S? ;-)
So like I said, I prefer to wait for reviews and general opinion before
pushing further.
next prev parent reply other threads:[~2012-07-10 9:18 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-06 12:00 [RFC PATCH 0/6] rcu: Userspace RCU extended quiescent state Frederic Weisbecker
2012-07-06 12:00 ` [PATCH 1/6] rcu: Settle config for userspace " Frederic Weisbecker
2012-07-06 16:31 ` Paul E. McKenney
2012-07-09 17:42 ` Frederic Weisbecker
2012-07-06 12:00 ` [PATCH 2/6] rcu: Allow rcu_user_enter()/exit() to nest Frederic Weisbecker
2012-07-06 16:27 ` Paul E. McKenney
2012-07-09 17:39 ` Frederic Weisbecker
2012-07-08 15:54 ` Avi Kivity
2012-07-09 17:45 ` Frederic Weisbecker
2012-07-06 12:00 ` [PATCH 3/6] rcu: Exit RCU extended QS on preemption in irq exit Frederic Weisbecker
2012-07-06 12:00 ` [PATCH 4/6] x86: Use the new schedule_user API on user preemption Frederic Weisbecker
2012-07-06 12:00 ` [PATCH 5/6] x86: Kernel entry/exit hooks for RCU Frederic Weisbecker
2012-07-06 12:00 ` [PATCH 6/6] x86: Exit RCU extended QS on notify resume Frederic Weisbecker
2012-07-06 16:33 ` Paul E. McKenney
2012-07-06 20:43 ` Josh Triplett
2012-07-08 21:17 ` Paul E. McKenney
2012-07-10 9:18 ` Frederic Weisbecker [this message]
2012-07-09 17:43 ` Frederic Weisbecker
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