just use this or something which suits your fancy...
#ifdef YOUR_DRIVER_DEBUG
static int driver_debug = 1;
#else
static int driver_debug = 0;
#endif
#undef debug_driver
#define debug_driver(fmt, arg...) do { \
if (driver_debug) \
printk (KERN_DEBUG __FILE__ ":" fmt "\n", ##arg); \
} while (0)
hth.
anupam
<aksingh@hss.hns.com> writes:
> Hi,
>
> Had a general question -- do driver writers log there messages,
> because
> it is a massive performance hit, do they have printk's in their code
> when
> they release it ?
> It is certainly desirable to have something of this sort(atleast
> some
> messages being logged), incase there is some problem with the
> driver(detected in field) then the logs can really help .
>
> thanks
> Amit
>
> Amit Kumar Singh/HSS@HSS@nl.linux.org on 06/10/2004 07:09:24 PM
>
> Sent by: kernelnewbies-bounce@nl.linux.org
>
> To: kernelnewbies@nl.linux.org
> cc:
>
> Subject: logging using printk, klogd
>
> Hi,
>
> The book rubini says -- "if u dont want to clobber the system logs
> with
> monitoring messages from your driver, then run klogd with the -f
> option or
> change /etc/syslog.conf to suit your needs"
>
> but "man klogd" says running klogd -f diverts the lof messages to
> that
> file, what it mean, as far as i understand is that all system logs wld
> be
> diverted to this file, instead of going to syslogd, so how does it
> matter,
> you still are clobbering the system logs with monitor messages from
> your
> driver ?? !!. Are not the two statements conflicting ?
>
> Is there a way to divert just you own driver's log messages to a
> paritcular
> file using printk and klogd/syslogd, such that this file wont have any
> system messages. ?
>
> thanks
> Amit
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
> Archive: [1]http://mail.nl.linux.org/kernelnewbies/
> FAQ: [2]http://kernelnewbies.org/faq/
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
> Archive: [3]http://mail.nl.linux.org/kernelnewbies/
> FAQ: [4]http://kernelnewbies.org/faq/
>
> References
>
> 1. http://mail.nl.linux.org/kernelnewbies/
> 2. http://kernelnewbies.org/faq/
> 3. http://mail.nl.linux.org/kernelnewbies/
> 4. http://kernelnewbies.org/faq/
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive: http://mail.nl.linux.org/kernelnewbies/
FAQ: http://kernelnewbies.org/faq/
