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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
Date: Wed, 10 Mar 2021 11:49:42 -0500	[thread overview]
Message-ID: <20210310114942.3ffb5e1f@gandalf.local.home> (raw)
In-Reply-To: <YEiLbLiXe6ju/vCO@TonyMac-Alibaba>

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

  parent reply	other threads:[~2021-03-10 16:50 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-09  4:43 [PATCH] net: add net namespace inode for all net_dev events Tony Lu
2021-03-09 17:40 ` Steven Rostedt
2021-03-09 19:53   ` David Ahern
2021-03-09 20:02     ` Steven Rostedt
2021-03-09 20:17       ` David Ahern
2021-03-09 20:20         ` Alexei Starovoitov
2021-03-09 20:35         ` Steven Rostedt
2021-03-09 20:39           ` Alexei Starovoitov
2021-03-09 20:18       ` Alexei Starovoitov
2021-03-10  9:03   ` Tony Lu
2021-03-10 16:31     ` Steven Rostedt
2021-03-11  6:39       ` Tony Lu
2021-03-10 16:49     ` Steven Rostedt [this message]
2021-03-09 20:12 ` Eric Dumazet
2021-03-10  9:22   ` Lorenz Bauer
2021-03-10 12:01     ` Tony Lu
2021-03-10  9:33   ` Tony Lu

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