netdev - Re: [External] Re: [PATCH v3] sock: add tracepoint for send recv length

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Date:   Sun, 8 Jan 2023 09:34:30 +0800
From:   运辉崔 <cuiyunhui@...edance.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     rostedt@...dmis.org, mhiramat@...nel.org, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        kuniyu@...zon.com, duanxiongchun@...edance.com,
        linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [External] Re: [PATCH v3] sock: add tracepoint for send recv length

On Sun, Jan 8, 2023 at 4:03 AM Cong Wang <xiyou.wangcong@...il.com> wrote:

>
> Thanks for the numbers, they help a lot.
>
> Acked-by: Cong Wang <cong.wang@...edance.com>
>
> A few minor issues below.

Ok, Thanks for your suggestion, I'll update these on v4.

> > +
> > +     TP_printk("sk address = %p, family = %s protocol = %s, length = %d, error = %d, flags = 0x%x",
> > +                     __entry->sk,
> > +                     show_family_name(__entry->family),
> > +                     show_inet_protocol_name(__entry->protocol),
> > +                     __entry->length,
> > +                     __entry->error, __entry->flags)
>
> Please align and pack those parameters properly.

OK, thanks.

> > +
> > +DEFINE_EVENT(sock_msg_length, sock_recvmsg_length,
> > +     TP_PROTO(struct sock *sk, __u16 family, __u16 protocol, int ret,
> > +              int flags),
> > +
> > +     TP_ARGS(sk, family, protocol, ret, flags)
> > +);
>
> It might be a better idea to remove "msg" from the tracepoint names, in
> case of any confusion with "sendpage". So
> s/sock_sendmsg_length/sock_send_length/ ?

OK, I'll rename both to sock_send_length/sock_recv_length.


> > -     return INDIRECT_CALL_INET(sock->ops->recvmsg, inet6_recvmsg,
> > +     int ret = INDIRECT_CALL_INET(sock->ops->recvmsg, inet6_recvmsg,
> >                                 inet_recvmsg, sock, msg, msg_data_left(msg),
> >                                 flags);
>
> Please adjust the indentations properly.

Roger that!

Thanks,
Yunhui