understanding of sysfs.

Greg KH greg at kroah.com
Tue May 23 02:34:55 EDT 2017

On Tue, May 23, 2017 at 11:58:31AM +0530, Madhu K wrote:
> Hi All,
> why there is no character device entry present in /sys/class? where as block
> and net device entries are present.

I see character devices there, but not the device nodes.  I don't see
block device nodes there either.

> Not only in /sys/class, for that matter why there is no character device
> entries present in /sys file system.

What do you exactly mean by "character device entries"?

> please help me to understand for what purpose char devices are kept away from /
> sys file system.

Have you read the driver model chapter in the Linux Device drivers book,
or the in-kernel sysfs documentation?


greg k-h

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