netdev - Re: [PATCH v2] net: Add trace events for all receive exit points

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Message-ID: <20181112154035.56de5e23@vmware.local.home>
Date:   Mon, 12 Nov 2018 15:40:35 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:     Geneviève Bastien <gbastien@...satic.net>,
        "David S. Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>, Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v2] net: Add trace events for all receive exit points

On Mon, 12 Nov 2018 15:20:55 -0500 (EST)
Mathieu Desnoyers <mathieu.desnoyers@...icios.com> wrote:

> 
> Hrm, looking at this again, I notice that there is a single DEFINE_EVENT
> using net_dev_template_simple.
> 
> We could simply turn netif_receive_skb_list_exit into a TRACE_EVENT(),
> remove the net_dev_template_simple, and rename the net_dev_template_return
> to net_dev_template ?

This too is only cosmetic and doesn't affect the code at all, because a
TRACE_EVENT() is really just:

#define TRACE_EVENT(name, proto, args, tstruct, assign, print) \
	DECLARE_EVENT_CLASS(name,			       \
			     PARAMS(proto),		       \
			     PARAMS(args),		       \
			     PARAMS(tstruct),		       \
			     PARAMS(assign),		       \
			     PARAMS(print));		       \
	DEFINE_EVENT(name, name, PARAMS(proto), PARAMS(args));

-- Steve

> 
> It's pretty clear from the prototype that it expects a "ret" argument,
> so I don't see the need to also state it in the template name.
> 
>