From: Dave Jones <davej@redhat.com>
To: Marcelo Tosatti <marcelo@kvack.org>
Cc: linux-mm@kvack.org, drepper@redhat.com, riel@redhat.com,
akpm@linux-foundation.org, mbligh@mbligh.org,
balbir@linux.vnet.ibm.com
Subject: Re: [RFC] oom notifications via /dev/oom_notify
Date: Wed, 31 Oct 2007 13:20:10 -0400 [thread overview]
Message-ID: <20071031172010.GA6005@redhat.com> (raw)
In-Reply-To: <20071030210743.GA304@dmt>
On Tue, Oct 30, 2007 at 05:07:43PM -0400, Marcelo Tosatti wrote:
> + case 13:
> + filp->f_op = &oom_notify_fops;
> + break;
Don't forget to add this to Documentation/devices.txt
> + while (cpu < NR_CPUS) {
> + struct vm_event_state *this = &per_cpu(vm_event_states, cpu);
> +
> + cpu = next_cpu(cpu, *cpumask);
> +
> + if (cpu < NR_CPUS)
> + prefetch(&per_cpu(vm_event_states, cpu));
> +
> + ret += this->event[vm_event];
> + }
> + return ret;
> +}
Is the prefetching worth it?
Dave
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next prev parent reply other threads:[~2007-10-31 17:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-30 19:18 [RFC] oom notifications via /dev/oom_notify Marcelo Tosatti
2007-10-30 20:57 ` Balbir Singh
2007-10-30 22:16 ` Marcelo Tosatti
2007-10-30 21:00 ` Rik van Riel
2007-10-30 21:07 ` Marcelo Tosatti
2007-10-30 21:19 ` Rik van Riel
2007-10-30 22:26 ` Marcelo Tosatti
2007-10-31 17:20 ` Dave Jones [this message]
2007-11-01 23:58 ` Marcelo Tosatti
2007-10-30 21:59 ` Badari Pulavarty
2007-10-30 21:12 ` Rik van Riel
2007-10-31 4:17 ` Badari
2007-10-31 4:31 ` Rik van Riel
2007-10-31 17:01 ` Badari Pulavarty
2007-10-31 16:15 ` Rik van Riel
2007-10-31 5:38 ` Balbir Singh
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