instrumenting kernel functions by name

[William Cohen]

Badari Pulavarty wrote:
> On Mon, 2005-03-14 at 13:30, William Cohen wrote:
> 
>>During my quest to look for insteresting points to instrument it seems 
>>like I was rewriting it for each function I was trying out and 
>>recompiling the my test instrumentation quite a bit. I was looking at 
>>functions that were being called from a number of different places, so I 
>>am using the hash functions in the SystemTap Runtime library to keep 
>>statistics on a per caller basis. The attached 
>>kprobes_where_funct.tar.gz has the source code. You will need to point 
>>the build script in the executable to the appropriate place for the 
>>SystemTap runtime libraries. The build script is a cheat; is used to 
>>find out the address of the kallsym_lookup_name() even though it is not 
>>exported.
> 
> 
> BTW, kallsym_lookup_name() is now exported. You don't need to cheat
> any more.
> 
> http://linus.bkbits.net:8080/linux-2.5/cset@1.1994.10.132?nav=index.html|ChangeSet@-7d
> 
> I pushed the patch few weeks ago (now its in mainline).

Great. The red hat kernels are a bit behind, so I had to work around it 
for the time being.

-Will