From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Subject: Re: [PATCH 0/7] [RFC] kernel: add a netlink interface to get information about processes
Date: Tue, 17 Feb 2015 09:53:09 +0100
Message-ID: <3238376.TxgiSSEfbZ@wuerfel>
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To: Andrey Vagin <avagin-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Cyrill Gorcunov <gorcunov-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>, Pavel Emelyanov <xemul-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>, Roger Luethi <rl-7uj+XXdSDtwfv37vnLkPlQ@public.gmane.org>
List-Id: linux-api@vger.kernel.org

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?

	Arnd