> 3. development practices:
> Do you have a way that you debug or develop Linux software, that
> may be different from others. For example, I'm a bit of a
> debugging medievalist. I still do probably 70% of my kernel debugging
> with printks.
Problem: When tracing user mode application together with kernel, logs
are not synchronized often intermixed on a terminal. You can save both
logs separately (dmesg and stderr output) but miss synchronization
between user mode log and kernel log.
Solution: Forward all stderr output to kernel and have synchronized
user mode and kernel log:
stderr = fopen("/dev/kmsg","r+");
fprintf(stderr,"log message from user mode to kernel\n");
... call kernel
--
Constantine Shulyupin
http://www.MakeLinux.com/
Embedded Linux Systems,
Device Drivers, TI DaVinci
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