Need help in understanding sysfs

[Vaibhav Jain]

On Wed, Aug 10, 2011 at 2:14 PM, Jeff Haran <jharan at bytemobile.com> wrote:

>    *From:* kernelnewbies-bounces at kernelnewbies.org [mailto:
> kernelnewbies-bounces at kernelnewbies.org] *On Behalf Of *Vaibhav Jain
> *Sent:* Wednesday, August 10, 2011 12:09 PM
> *To:* kernelnewbies at kernelnewbies.org
> *Subject:* Need help in understanding sysfs****
>
> ** **
>
> Hi,****
>
> I need to undestand sysfs and make changes to it.****
>
> Please provide me with some good references.****
>
>  ****
>
> Thanks****
>
> Vaibhav Jain****
>
>  ****
>
> First thing to try would be your favorite search engine. If you do a search
> for “lwn <topic>” you’ll often be taken to a LWN article that is on topic
> though perhaps a bit dated. For instance, a search for “lwn sysfs” takes you
> to here:****
>
> ** **
>
> http://lwn.net/Articles/54651/****
>
> ** **
>
> Probably a good place to start. Linux is mostly good code, but the
> documentation that comes with the kernel sources mostly sucks, so the web is
> your friend in this regard.****
>
> ** **
>


 Hi,

Sorry for the vague question. I would clarify. There are two things I need :

1-  I need to know how information is organized in the sysfs and  understand
the concepts of kobjects , attributes etc.

2.- I need to understand how to create a file entry in the sysfs.
Particulary i need to create an entry inside the
directory /sys/devices/system/cpu/ . I will be required
to write some driver in the future which will accept inputs from this file
but I am not very clear about that right now. So I was thinking of just
trying to create an entry for now.

I tried searching the web but there are not many articles that explain the
above two in detail unlike procfs for which there are a lot of articles with
samples.
The ones I found were not very interesting to read.

Thanks
Vaibhav Jain
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