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Date: Wed, 4 May 2016 15:34:21 -0700 From: Andrey Vagin <avagin@...nvz.org> To: Stephen Hemminger <stephen@...workplumber.org>, Andy Lutomirski <luto@...capital.net> Cc: LKML <linux-kernel@...r.kernel.org>, David Miller <davem@...emloft.net> Subject: Re: task_diag: add a new interface to get information about processes Hi Stephen, On Wed, May 4, 2016 at 1:22 PM, Stephen Hemminger <stephen@...workplumber.org> wrote: > I understand how reading /proc or /sys can be a bottleneck, but this > proposed method using a system call is the wrong way to do this. > > Why not use netlink like other systems do which allows a message > based response which allows for future changes (no fixed datastructures), > and is message based. > > Generic netlink has already been used by several other subsystems. I used netlink in two first versions of task_diag, but then Andy convinced me that netlink interfaces are not ideal for this case. I added him into Cс. Here is a thread with our discussion about using netlink for task_diag: https://lkml.org/lkml/2015/12/15/520 Can I ask you to read it and give your comments? It would be nice to find a way how to use netlink sockets instead of creating a new interface. Thanks, Andrew
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