netdev - Re: [PATCH net-next 0/2] DSA trace events

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Message-ID: <d1e4a839-6365-44ef-b9ca-157a4c2d2180@lunn.ch>
Date:   Wed, 12 Apr 2023 02:48:35 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH net-next 0/2] DSA trace events

On Fri, Apr 07, 2023 at 05:14:49PM +0300, Vladimir Oltean wrote:
> This series introduces the "dsa" trace event class, with the following
> events:
> 
> $ trace-cmd list | grep dsa
> dsa
> dsa:dsa_fdb_add_hw
> dsa:dsa_mdb_add_hw
> dsa:dsa_fdb_del_hw
> dsa:dsa_mdb_del_hw
> dsa:dsa_fdb_add_bump
> dsa:dsa_mdb_add_bump
> dsa:dsa_fdb_del_drop
> dsa:dsa_mdb_del_drop
> dsa:dsa_fdb_del_not_found
> dsa:dsa_mdb_del_not_found
> dsa:dsa_lag_fdb_add_hw
> dsa:dsa_lag_fdb_add_bump
> dsa:dsa_lag_fdb_del_hw
> dsa:dsa_lag_fdb_del_drop
> dsa:dsa_lag_fdb_del_not_found
> dsa:dsa_vlan_add_hw
> dsa:dsa_vlan_del_hw
> dsa:dsa_vlan_add_bump
> dsa:dsa_vlan_del_drop
> dsa:dsa_vlan_del_not_found
> 
> These are useful to debug refcounting issues on CPU and DSA ports, where
> entries may remain lingering, or may be removed too soon, depending on
> bugs in higher layers of the network stack.

Hi Vladimir

I don't know anything about trace points. Should you Cc: 

Steven Rostedt <rostedt@...dmis.org> (maintainer:TRACING)
Masami Hiramatsu <mhiramat@...nel.org> (maintainer:TRACING)

to get some feedback from people who do?

   Andrew