From: "Yann E. MORIN" <yann.morin.1998@free.fr>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: "Geert Uytterhoeven" <geert@linux-m68k.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Ingo Molnar" <mingo@elte.hu>,
laijs@cn.fujitsu.com, dipankar@in.ibm.com,
"Andrew Morton" <akpm@linux-foundation.org>,
"Mathieu Desnoyers" <mathieu.desnoyers@polymtl.ca>,
josh@joshtriplett.org, niv@us.ibm.com,
"Thomas Gleixner" <tglx@linutronix.de>,
"Peter Zijlstra" <peterz@infradead.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
"David Howells" <dhowells@redhat.com>,
edumazet@google.com, darren@dvhart.com,
"Frédéric Weisbecker" <fweisbec@gmail.com>,
sbw@mit.edu, Linux-Arch <linux-arch@vger.kernel.org>,
linux-kbuild <linux-kbuild@vger.kernel.org>
Subject: Re: [PATCH tip/core/rcu 8/9] nohz_full: Add full-system-idle state machine
Date: Sun, 8 Sep 2013 12:32:50 +0200 [thread overview]
Message-ID: <20130908103250.GA3698@free.fr> (raw)
In-Reply-To: <20130907185710.GF3966@linux.vnet.ibm.com>
Paul, All,
On 2013-09-07 11:57 -0700, Paul E. McKenney spake thusly:
> On Sat, Sep 07, 2013 at 11:13:48AM +0200, Yann E. MORIN wrote:
[--SNIP--]
> > I'll see if I can come up with a meaningfull construct that fixes your
> > use-case. Don't hold your breath, though! ;-)
>
> If not, we need to add NR_CPUS to the architectures lacking them...
Unfortunately, I was not able to come up with anything suitable.
I think your proposal to always define NR_CPUS=1 for architectures
without SMP support is a good solution.
After all, if !SMP because the architecture does not support it, I
believe it makes sense that NR_CPUS be defined to 1.
Unless NR_CPUS carries with it a hidden meaning about SMP being
possible, that is, which would probably be wrong anyway, since we have
SMP for this.
Regards,
Yann E. MORIN.
--
.-----------------.--------------------.------------------.--------------------.
| Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ |
| +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. |
'------------------------------^-------^------------------^--------------------'
next prev parent reply other threads:[~2013-09-08 10:32 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20130820024700.GA31075@linux.vnet.ibm.com>
[not found] ` <1376966841-31774-1-git-send-email-paulmck@linux.vnet.ibm.com>
[not found] ` <1376966841-31774-8-git-send-email-paulmck@linux.vnet.ibm.com>
2013-09-06 8:08 ` [PATCH tip/core/rcu 8/9] nohz_full: Add full-system-idle state machine Geert Uytterhoeven
2013-09-06 8:08 ` Geert Uytterhoeven
2013-09-06 17:30 ` Paul E. McKenney
2013-09-06 17:30 ` Paul E. McKenney
2013-09-06 18:50 ` Geert Uytterhoeven
2013-09-06 19:32 ` Paul E. McKenney
2013-09-06 19:32 ` Paul E. McKenney
2013-09-07 11:22 ` Geert Uytterhoeven
2013-09-07 18:59 ` Paul E. McKenney
2013-09-07 18:59 ` Paul E. McKenney
2013-09-07 9:13 ` Yann E. MORIN
2013-09-07 18:57 ` Paul E. McKenney
2013-09-07 18:57 ` Paul E. McKenney
2013-09-08 10:32 ` Yann E. MORIN [this message]
2013-09-08 10:32 ` Yann E. MORIN
2013-09-08 10:46 ` Frederic Weisbecker
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