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
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4FE1DC24.6020508@linux.vnet.ibm.com \
--to=sjenning@linux.vnet.ibm.com \
--cc=dan.magenheimer@oracle.com \
--cc=konrad.wilk@oracle.com \
--cc=levinsasha928@gmail.com \
--cc=linux-mm@kvack.org \
--cc=ngupta@vflare.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.