Yes. https://www.kernel.org/doc/local/pr_debug.txt On Wed, Jul 23, 2014 at 8:39 PM, Fernando Apesteguía <fernando.apesteguia@xxxxxxxxx> wrote: > > > > On Wed, Jul 23, 2014 at 8:34 PM, Kristofer Hallin > <kristofer.hallin@xxxxxxxxx> wrote: >> >> 1. No. Depending on what subsystem your are printing logs from you >> should use different functions for logging. In the networking >> subsystem netdev_dbg is suitable and so on. Otherwise pr_debug will >> always work and is always preferred over printk. > > > By default, pr_debug is an empty macro unless you add -DDEBUG to CFLAGS. So > in addition to what Kristofer said, be sure you compile your module/kernel > with that flag enabled. > > Cheers. > >> >> >> 2. Use pr_debug. >> >> On Wed, Jul 23, 2014 at 8:16 PM, Raphael Silva >> <raphaelcampos.rp@xxxxxxxxx> wrote: >> > Hello guys, >> > >> > 1) >> > If I use printk(KERN_<LEVEL>...) the checkpatch warns me: >> > WARNING: Prefer [subsystem eg: netdev]_dbg([subsystem]dev, ... then >> > dev_dbg(dev, ... then pr_debug(... to printk(KERN_DEBUG ... >> > >> > So, pr_devel() is the correct way to print a debug level msg? >> > >> > 2) >> > if pr_<level> is the correct way, what about KERN_DEFAULT ? >> > >> > If I don't put the kern_level (printk("Hello");) >> > WARNING: printk() should include KERN_ facility level >> > >> > if I put KERN_DEFAULT: >> > WARNING: Prefer [subsystem eg: netdev]_default([subsystem]dev, ... then >> > dev_default(dev, ... then pr_default(... to printk(KERN_DEFAULT ... >> > >> > But for KERN_DEFAULT, there isn't a macro pr_<level> like pr_devel(). >> > >> > Can anyone show me the correct way? >> > >> > tks >> > >> > >> > >> > >> > _______________________________________________ >> > Kernelnewbies mailing list >> > Kernelnewbies@xxxxxxxxxxxxxxxxx >> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
