[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20070530001600.1d44f5b7.akpm@linux-foundation.org>
Date: Wed, 30 May 2007 00:16:00 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: menage@...gle.com
Cc: dev@...ru, xemul@...ru, serue@...ibm.com, vatsa@...ibm.com,
ebiederm@...ssion.com, haveblue@...ibm.com,
svaidy@...ux.vnet.ibm.com, balbir@...ibm.com, pj@....com,
cpw@....com, ckrm-tech@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, containers@...ts.osdl.org,
mbligh@...gle.com, rohitseth@...gle.com, devel@...nvz.org
Subject: Re: [PATCH 02/10] Containers(V10): Example CPU accounting subsystem
On Tue, 29 May 2007 06:01:06 -0700 menage@...gle.com wrote:
> This example demonstrates how to use the generic container subsystem
> for a simple resource tracker that counts, for the processes in a
> container, the total CPU time used and the %CPU used in the last
> complete 10 second interval.
>
> ...
>
> --- /dev/null
> +++ container-2.6.22-rc2-mm1/kernel/cpu_acct.c
> @@ -0,0 +1,185 @@
> +/*
> + * kernel/cpu_acct.c - CPU accounting container subsystem
> + *
> + * Copyright (C) Google Inc, 2006
> + *
> + * Developed by Paul Menage (menage@...gle.com) and Balbir Singh
> + * (balbir@...ibm.com)
> + *
> + */
>
> ...
>
> +static u64 cpuusage_read(struct container *cont,
> + struct cftype *cft)
> +{
> + struct cpuacct *ca = container_ca(cont);
> + u64 time;
> +
> + spin_lock_irq(&ca->lock);
> + cpuusage_update(ca);
> + time = cputime64_to_jiffies64(ca->time);
> + spin_unlock_irq(&ca->lock);
> +
> + /* Convert 64-bit jiffies to seconds */
> + time *= 1000;
> + do_div(time, HZ);
hm, we have jiffies_to_lotsofthings, but we don't appear to have a
jiffies_to_seconds. How odd.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists