netdev - Re: [PATCH net-next V4 2/2] net/sched: cbs: fix port

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Message-ID: <201903290515.WXCfS3GD%lkp@intel.com>
Date:   Fri, 29 Mar 2019 05:31:38 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Leandro Dorileo <leandro.maciel.dorileo@...el.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S . Miller" <davem@...emloft.net>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        f.fainelli@...il.com, vedang.patel@...el.com,
        andre.guedes@...el.com
Subject: Re: [PATCH net-next V4 2/2] net/sched: cbs: fix port_rate
 miscalculation

Hi Leandro,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Leandro-Dorileo/net-sched-taprio-cbs-Fix-using-invalid-link-speed/20190329-043825
config: alpha-allyesconfig (attached as .config)
compiler: alpha-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=alpha 

All warnings (new ones prefixed by >>):

   In file included from include/linux/printk.h:330:0,
                    from include/linux/kernel.h:15,
                    from include/linux/list.h:9,
                    from include/linux/module.h:9,
                    from net/sched/sch_cbs.c:58:
   net/sched/sch_cbs.c: In function 'cbs_set_port_rate':
>> net/sched/sch_cbs.c:318:18: warning: format '%lld' expects argument of type 'long long int', but argument 5 has type 'long int' [-Wformat=]
     netdev_dbg(dev, "cbs: set %s's port_rate to: %lld, linkspeed: %d\n",
                     ^
   include/linux/dynamic_debug.h:118:15: note: in definition of macro '__dynamic_func_call'
      func(&id, ##__VA_ARGS__);  \
                  ^~~~~~~~~~~
   include/linux/dynamic_debug.h:154:2: note: in expansion of macro '_dynamic_func_call'
     _dynamic_func_call(fmt, __dynamic_netdev_dbg,  \
     ^~~~~~~~~~~~~~~~~~
   include/linux/netdevice.h:4744:2: note: in expansion of macro 'dynamic_netdev_dbg'
     dynamic_netdev_dbg(__dev, format, ##args);  \
     ^~~~~~~~~~~~~~~~~~
>> net/sched/sch_cbs.c:318:2: note: in expansion of macro 'netdev_dbg'
     netdev_dbg(dev, "cbs: set %s's port_rate to: %lld, linkspeed: %d\n",
     ^~~~~~~~~~

vim +318 net/sched/sch_cbs.c

   307	
   308	static void cbs_set_port_rate(struct net_device *dev, struct cbs_sched_data *q)
   309	{
   310		struct ethtool_link_ksettings ecmd;
   311		int port_rate = -1;
   312	
   313		if (!__ethtool_get_link_ksettings(dev, &ecmd) &&
   314		    ecmd.base.speed != SPEED_UNKNOWN)
   315			port_rate = ecmd.base.speed * 1000 * BYTES_PER_KBIT;
   316	
   317		atomic64_set(&q->port_rate, port_rate);
 > 318		netdev_dbg(dev, "cbs: set %s's port_rate to: %lld, linkspeed: %d\n",
   319			   dev->name, atomic64_read(&q->port_rate), ecmd.base.speed);
   320	}
   321	

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