From: Frederic Weisbecker <fweisbec@gmail.com>
To: Christoph Lameter <cl@gentwo.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Gilad Ben-Yossef <gilad@benyossef.com>,
Thomas Gleixner <tglx@linutronix.de>, Tejun Heo <tj@kernel.org>,
John Stultz <johnstul@us.ibm.com>,
Hakan Akkan <hakanakkan@gmail.com>,
Max Krasnyansky <maxk@qualcomm.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
hughd@google.com, viresh.kumar@linaro.org, hpa@zytor.com,
mingo@kernel.org, peterz@infradead.org,
Mike Frysinger <vapier@gentoo.org>,
Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [PATCH] vmstat: on demand updates from differentials V7
Date: Tue, 3 Jun 2014 17:43:42 +0200 [thread overview]
Message-ID: <20140603154339.GE23860@localhost.localdomain> (raw)
In-Reply-To: <alpine.DEB.2.10.1405300851490.8240@gentwo.org>
On Fri, May 30, 2014 at 08:52:42AM -0500, Christoph Lameter wrote:
> On Fri, 30 May 2014, Frederic Weisbecker wrote:
>
> > > + cpu_stat_off = kmalloc(cpumask_size(), GFP_KERNEL);
> > > + cpumask_copy(cpu_stat_off, cpu_online_mask);
> >
> > Actually looks like you can as well remove that cpumask and use
> > cpu_online_mask directly.
>
> That would mean I would offline cpus that do not need the
> vmstat worker?
I missed that works adaptively set or clear cpus from the mask. Nevermind,
just ignore what I said.
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WARNING: multiple messages have this Message-ID (diff)
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Christoph Lameter <cl@gentwo.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Gilad Ben-Yossef <gilad@benyossef.com>,
Thomas Gleixner <tglx@linutronix.de>, Tejun Heo <tj@kernel.org>,
John Stultz <johnstul@us.ibm.com>,
Hakan Akkan <hakanakkan@gmail.com>,
Max Krasnyansky <maxk@qualcomm.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
hughd@google.com, viresh.kumar@linaro.org, hpa@zytor.com,
mingo@kernel.org, peterz@infradead.org,
Mike Frysinger <vapier@gentoo.org>,
Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [PATCH] vmstat: on demand updates from differentials V7
Date: Tue, 3 Jun 2014 17:43:42 +0200 [thread overview]
Message-ID: <20140603154339.GE23860@localhost.localdomain> (raw)
In-Reply-To: <alpine.DEB.2.10.1405300851490.8240@gentwo.org>
On Fri, May 30, 2014 at 08:52:42AM -0500, Christoph Lameter wrote:
> On Fri, 30 May 2014, Frederic Weisbecker wrote:
>
> > > + cpu_stat_off = kmalloc(cpumask_size(), GFP_KERNEL);
> > > + cpumask_copy(cpu_stat_off, cpu_online_mask);
> >
> > Actually looks like you can as well remove that cpumask and use
> > cpu_online_mask directly.
>
> That would mean I would offline cpus that do not need the
> vmstat worker?
I missed that works adaptively set or clear cpus from the mask. Nevermind,
just ignore what I said.
next prev parent reply other threads:[~2014-06-03 15:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-29 19:56 [PATCH] vmstat: on demand updates from differentials V7 Christoph Lameter
2014-05-29 19:56 ` Christoph Lameter
2014-05-29 23:55 ` Frederic Weisbecker
2014-05-29 23:55 ` Frederic Weisbecker
2014-05-30 14:00 ` Christoph Lameter
2014-05-30 14:00 ` Christoph Lameter
2014-05-30 0:06 ` Frederic Weisbecker
2014-05-30 0:06 ` Frederic Weisbecker
2014-05-30 13:52 ` Christoph Lameter
2014-05-30 13:52 ` Christoph Lameter
2014-06-03 15:43 ` Frederic Weisbecker [this message]
2014-06-03 15:43 ` Frederic Weisbecker
2014-06-03 16:09 ` Frederic Weisbecker
2014-06-03 16:09 ` Frederic Weisbecker
2014-06-03 16:28 ` Christoph Lameter
2014-06-03 16:28 ` Christoph Lameter
2014-06-03 16:38 ` Christoph Lameter
2014-06-03 16:38 ` Christoph Lameter
2014-06-03 16:55 ` Frederic Weisbecker
2014-06-03 16:55 ` Frederic Weisbecker
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