[DRBD-user] notify() and show_stack()
tensai at zmonkey.org
Mon Mar 28 23:14:52 CEST 2005
I'm trying to compile the DRBD kernel module on Debian stable using
kernel 2.4.18. I'm running into an error locating functions notify() and
drbd_compat_wrappers.h: In function `dump_stack':
drbd_compat_wrappers.h:19: warning: implicit declaration of
lru_cache.c: In function `lc_alloc':
lru_cache.c:53: warning: implicit declaration of function
It compiles but fails to load:
# insmod drbd/drbd.o
drbd/drbd.o: unresolved symbol show_stack
drbd/drbd.o: unresolved symbol unlikely
I was able to get it to work by commenting out the call to show_stack().
As it seems to be a debugging help I figured that would at least
function. I wasn't able to find the function definition anywhere. It's
in the asm specific code but I don't see any mention in a .h file.
For unlikely() I found the function definition in linux/compiler.h in
the kernel source tree. Adding an #include statement made that work. Now
everything seems to be fine.
Is that a known problem? Did I do something wrong during the build to
make it lose track of the headers?
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