Re: [PATCH 0/7] [RFC] kernel: add a netlink interface to get information about processes

[Andrew Vagin <avagin-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>]

On Tue, Feb 17, 2015 at 09:53:09AM +0100, Arnd Bergmann wrote:
> On Tuesday 17 February 2015 11:20:19 Andrey Vagin wrote:
> > task_diag is based on netlink sockets and looks like socket-diag, which
> > is used to get information about sockets.
> > 
> > A request is described by the task_diag_pid structure:
> > 
> > struct task_diag_pid {
> >        __u64   show_flags;      /* specify which information are required */
> >        __u64   dump_stratagy;   /* specify a group of processes */
> > 
> >        __u32   pid;
> > };
> 
> Can you explain how the interface relates to the 'taskstats' genetlink
> API? Did you consider extending that interface to provide the
> information you need instead of basing on the socket-diag?

It isn't based on the socket-diag, it looks like socket-diag.

Current task_diag registers a new genl family, but we can use the taskstats
family and add task_diag commands to it.

Thanks,
Andrew

> 
> 	Arnd