Hi, Airton, This is simply a matter of setting dmesg to work with the level which you need in your setup. You should set "dmesg -n" to work with the pr_info() level. Pleas look in man dmesg, for the "-n, --console-level level" part. If you are in a haste and looking for immediate solution, you can also try pr_err() instead, as most distros do print such messages with dmesg without need for any special setup. Regards, Rami Rosen http://ramirose.wix.com/ramirosen On 18 May 2015 at 22:23, Airton Ishimori <nobumasa.bcc@xxxxxxxxx> wrote: > Hello, everybody, > > I'm trying to develop a new Ethernet driver (Realtek) for Linux kernel > 4.0.2. > > [ 3.612938] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded > > As part of my studies, I'm trying to trace the path for functions defined in > drivers/net/ethernet/realtek/r8169.c, net/core/dev.c and > net/core/dev_ioctl.c. I'm using "printks" for this purpose. For instance, > something like: > > printk("TEST: __dev_set_promiscuity\n"); > > However, I'm not getting what's going on. I can set/unset the promiscuity > behaviour via ifconfig command. > > [ 131.330091] device eth0 entered promiscuous mode > [ 170.619086] device eth0 left promiscuous mode > > By looking at the dmesg output above, I thought the function that deals with > promiscuity was __dev_set_promiscuity() defined in net/core/dev.c, because > this function calls a function to print the message above: > > pr_info("device %s %s promiscuous mode\n", dev->name, dev->flags & > IFF_PROMISC ? "entered" : "left"); > > But, when I tried to look for my printk message with dmesg after compiling > and running the kernel, I couldn't find it. > > $ cd linux-4.0.2/ > $ make net && make modules > $ sudo make modules_install && sudo make install > > Can somebody help me to understand what's happening? > > Thanks in advance, > > -- > Airton Ishimori > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
