Re: [PATCH] netconsole: Append kernel version to message

From: Breno Leitao <leitao@debian.org>
To: Andrew Lunn <andrew@lunn.ch>
Cc: "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	sergey.senozhatsky@gmail.com, pmladek@suse.com,
	Dave Jones <davej@codemonkey.org.uk>,
	"open list:NETWORKING DRIVERS" <netdev@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] netconsole: Append kernel version to message
Date: Tue, 4 Jul 2023 08:53:56 -0700	[thread overview]
Message-ID: <ZKRAlJMi3tjOSrXD@gmail.com> (raw)
In-Reply-To: <4b2746ad-1835-43e6-a2fc-7063735daa46@lunn.ch>

On Mon, Jul 03, 2023 at 06:46:25PM +0200, Andrew Lunn wrote:
> Hi Breno

Hello,

> Why not just send the message without uname appended. You probably
> want to see the OOM messages...
> 
> Also, what context are we in here? Should that be GFP_ATOMIC, which
> net/core/netpoll.c is using to allocate the skbs?

Maybe this is not necessary anymore, since I might be using the buffer
already allocated.

> > +static inline void send_msg_udp(struct netconsole_target *nt,
> > +				const char *msg, unsigned int len)
> > +{
> > +#ifdef CONFIG_NETCONSOLE_UNAME
> > +	send_ext_msg_udp_uname(nt, msg, len);
> > +#else
> > +	send_ext_msg_udp(nt, msg, len);
> > +#endif
> 
> Please use
> 
> if (IS_ENABLED(CONFIG_NETCONSOLE_UNAME)) {} else {}
> 
> so the code is compiled and then thrown away. That nakes build testing
> more efficient.

Makes total sense, I am incorporating it into v2 now.

Thanks!