linux-kernel - Re: [PATCH net-next,v2,1/1] hv_netvsc: introduce netif-msg into netvsc module

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1429907357.23327.14.camel@perches.com>
Date:	Fri, 24 Apr 2015 13:29:17 -0700
From:	Joe Perches <joe@...ches.com>
To:	sixiao@...rosoft.com
Cc:	kys@...rosoft.com, haiyangz@...rosoft.com,
	devel@...uxdriverproject.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next,v2,1/1] hv_netvsc: introduce netif-msg into
 netvsc module

On Fri, 2015-04-24 at 11:34 -0700, sixiao@...rosoft.com wrote:
> From: Simon Xiao <sixiao@...rosoft.com>
> 
> 1. Introduce netif-msg to netvsc to control debug logging output
> and keep msg_enable in netvsc_device_context so that it is
> kept persistently.
> 2. Only call dump_rndis_message() when NETIF_MSG_RX_ERR or above
> is specified in netvsc module debug param.
> In non-debug mode, in current code, dump_rndis_message() will not
> dump anything but it still initialize some local variables and
> process the switch logic which is unnecessary, especially in
> high network throughput situation.

[]

> diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
[]
> @@ -888,6 +891,11 @@ static int netvsc_probe(struct hv_device *dev,
>  
>  	net_device_ctx = netdev_priv(net);
>  	net_device_ctx->device_ctx = dev;
> +	net_device_ctx->msg_enable = netif_msg_init(debug, default_msg);
> +	if (netif_msg_probe(net_device_ctx))
> +		netdev_dbg(net, "netvsc msg_enable: %d",
> +			   net_device_ctx->msg_enable);

Please use newlines to terminate formats.

It helps prevent log content interleaving when multiple processes
are emitting output at the same time.

This could be shortened to use netif_<level> like:

	netif_dbg(net_device_ctx, probe, net, "netvsc_msg_enable: %d\n",
		  net_device_ctx->msg_enable);



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/