linux-kernel - Re: [PATCH] net: add net namespace inode for all net

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Date:   Thu, 11 Mar 2021 14:39:17 +0800
From:   Tony Lu <tonylu@...ux.alibaba.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     davem@...emloft.net, mingo@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: add net namespace inode for all net_dev events

On Wed, Mar 10, 2021 at 11:31:12AM -0500, Steven Rostedt wrote:
> On Wed, 10 Mar 2021 17:03:40 +0800
> Tony Lu <tonylu@...ux.alibaba.com> wrote:
> 
> > I use pahole to read vmlinux.o directly with defconfig and
> > CONFIG_DEBUG_INFO enabled, the result shows 22 structs prefixed with
> > trace_event_raw_ that have at least one hole.
> 
> I was thinking of pahole too ;-)
> 
> But the information can also be captured from the format files with simple
> scripts as well. And perhaps be more tuned to see if there's actually a fix
> for them, and ignore reporting it if there is no fix, as all trace events
> are 4 byte aligned, and if we are off by one, sometimes it doesn't matter.

I am going to send a patch to fix this issue later. There are many
events have more than 1 holes, I am trying to pick up the events that are
really to be fixed.


Cheers,
Tony Lu

> 
> -- Steve