From: Seth Jennings <sjenning@linux.vnet.ibm.com>
To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: linux-mm@kvack.org, Nitin Gupta <ngupta@vflare.org>,
Konrad Wilk <konrad.wilk@oracle.com>,
Sasha Levin <levinsasha928@gmail.com>
Subject: Re: help converting zcache from sysfs to debugfs?
Date: Wed, 20 Jun 2012 09:20:20 -0500 [thread overview]
Message-ID: <4FE1DC24.6020508@linux.vnet.ibm.com> (raw)
In-Reply-To: <6b8ff49a-a5aa-4b9b-9425-c9bc7df35a34@default>
On 06/19/2012 07:29 PM, Dan Magenheimer wrote:
> Zcache (in staging) has a large number of read-only counters that
> are primarily of interest to developers. These counters are currently
> visible from sysfs. However sysfs is not really appropriate and
> zcache will need to switch to debugfs before it can be promoted
> out of staging.
>
> For some of the counters, it is critical that they remain accurate so
> an atomic_t must be used. But AFAICT there is no way for debugfs
> to work with atomic_t.
Yes, there doesn't seem to be an existing interface.
You could add support for it to fs/debugfs/file.c. It doesn't look too
complicated.
--
Seth
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next prev parent reply other threads:[~2012-06-20 14:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-20 0:29 help converting zcache from sysfs to debugfs? Dan Magenheimer
2012-06-20 11:03 ` Konrad Rzeszutek Wilk
2012-06-20 15:24 ` Dan Magenheimer
2012-06-20 14:20 ` Seth Jennings [this message]
2012-06-20 14:36 ` Seth Jennings
2012-06-20 15:30 ` Dan Magenheimer
2012-06-20 15:40 ` Seth Jennings
2012-06-20 16:56 ` Konrad Rzeszutek Wilk
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