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Date:   Wed, 10 Mar 2021 11:49:42 -0500
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Tony Lu <tonylu@linux.alibaba.com>
Cc:     davem@davemloft.net, mingo@redhat.com, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] net: add net namespace inode for all net_dev events
Message-ID: <20210310114942.3ffb5e1f@gandalf.local.home>
In-Reply-To: <YEiLbLiXe6ju/vCO@TonyMac-Alibaba>
References: <20210309044349.6605-1-tonylu@linux.alibaba.com>
        <20210309124011.709c6cd3@gandalf.local.home>
        <YEiLbLiXe6ju/vCO@TonyMac-Alibaba>
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On Wed, 10 Mar 2021 17:03:40 +0800
Tony Lu <tonylu@linux.alibaba.com> wrote:

> On Tue, Mar 09, 2021 at 12:40:11PM -0500, Steven Rostedt wrote:


> > The above shows 10 bytes wasted for this event.
> > 


> 
> 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.
> 

> 
> pahole shows there are 5 holes with 10 bytes in net_dev_start_xmit event.
> 

Oh, an I'm glad that my analysis matched with pahole ;-)

-- Steve