From: David Ahern <dsahern@gmail.com>
To: David Howells <dhowells@redhat.com>, netdev@vger.kernel.org
Cc: linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next] udp: Add tracepoints to monitor skbs going in and out of a UDP socket
Date: Thu, 4 Oct 2018 10:36:15 -0600 [thread overview]
Message-ID: <f4d5ec71-b09a-84fa-599e-d0482cdb77b7@gmail.com> (raw)
In-Reply-To: <153864184110.20296.16498481420320274305.stgit@warthog.procyon.org.uk>
On 10/4/18 2:30 AM, David Howells wrote:
> Add three tracepoints to the UDP/UDP6 code to trace three aspects of
> sk_buff handling:
>
> (1) UDP packets that are about to be handed off to the IP layer to be
> transmitted.
>
> (2) UDP packets that have just arrived at the socket.
These do not add any real value. You are only dumping the skb address,
and you can get the same effect with a probe on the function and dumping
the value of the register with the skb argument.
next prev parent reply other threads:[~2018-10-04 16:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-04 8:30 [PATCH net-next] udp: Add tracepoints to monitor skbs going in and out of a UDP socket David Howells
2018-10-04 16:36 ` David Ahern [this message]
2018-10-04 16:54 ` David Howells
2018-10-04 17:19 ` Alexei Starovoitov
2018-10-04 23:24 ` David Howells
2018-10-05 2:03 ` Alexei Starovoitov
2018-10-05 6:46 ` David Howells
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