From: Tim Chen <tim.c.chen@linux.intel.com>
To: Simon Jeons <simon.jeons@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Tejun Heo <tj@kernel.org>,
Christoph Lameter <cl@linux-foundation.org>,
Al Viro <viro@zeniv.linux.org.uk>,
Dave Hansen <dave.hansen@intel.com>,
Andi Kleen <ak@linux.intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>
Subject: Re: [PATCH 1/2] Make the batch size of the percpu_counter configurable
Date: Wed, 01 May 2013 08:53:39 -0700 [thread overview]
Message-ID: <1367423619.27102.198.camel@schen9-DESK> (raw)
In-Reply-To: <51809F8D.3040305@gmail.com>
On Wed, 2013-05-01 at 12:52 +0800, Simon Jeons wrote:
> Hi Tim,
> On 04/30/2013 01:12 AM, Tim Chen wrote:
> > Currently, there is a single, global, variable (percpu_counter_batch) that
> > controls the batch sizes for every 'struct percpu_counter' on the system.
> >
> > However, there are some applications, e.g. memory accounting where it is
> > more appropriate to scale the batch size according to the memory size.
> > This patch adds the infrastructure to be able to change the batch sizes
> > for each individual instance of 'struct percpu_counter'.
> >
> > I have chosen to implement the added field of batch as a pointer
> > (by default point to percpu_counter_batch) instead
> > of a static value. The reason is the percpu_counter initialization
> > can be called when we only have boot cpu and not all cpus are online.
>
> What's the meaning of boot cpu? Do you mean cpu 0?
>
Yes.
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prev parent reply other threads:[~2013-05-01 15:53 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-29 17:12 Tim Chen
2013-04-29 17:12 ` [PATCH 2/2] Make batch size for memory accounting configured according to size of memory Tim Chen
2013-05-01 5:09 ` Ric Mason
2013-05-01 16:07 ` Tim Chen
2013-04-30 13:32 ` [PATCH 1/2] Make the batch size of the percpu_counter configurable Christoph Lameter
2013-04-30 16:23 ` Tim Chen
2013-04-30 17:28 ` Christoph Lameter
2013-04-30 17:48 ` Tim Chen
2013-04-30 17:53 ` Christoph Lameter
2013-04-30 17:55 ` Tim Chen
2013-04-30 18:27 ` Christoph Lameter
2013-04-30 19:00 ` Tim Chen
2013-04-30 19:04 ` Tejun Heo
2013-04-30 20:50 ` Christoph Lameter
2013-04-30 17:34 ` Andi Kleen
2013-04-30 18:10 ` Eric Dumazet
2013-04-30 18:28 ` Tim Chen
2013-05-01 4:52 ` Simon Jeons
2013-05-01 15:53 ` Tim Chen [this message]
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