Re: [BUG] gcov causes vread_tsc to increment kernel memory

[Peter Oberparleiter <oberpar@linux.vnet.ibm.com>]

Ingo Molnar wrote:
> * Peter Oberparleiter <oberpar@linux.vnet.ibm.com> wrote:
> 
>> Also seeing as function tracer and gcov work on a similar basis 
>> and require similar files to be excluded from profiling, it would 
>> be nice if we wouldn't need to mark those files separately. [...]
> 
> One of the general things i pointed out during review is that 
> there's a fair amount of overlap between tracing/instrumentation and 
> the gcov support patches and now for a change Andrew has merged 
> incomplete stuff upstream prematurely ;-)

Yes there is overlap between ftrace and gcov and I will help in finding
and merging those bits, but as I also pointed out during review, there
are also fundamental differences.

By including the gcov infrastructure upstream now, we can incrementally
improve its integration with any similar mechanism _while_ people are
improving their test cases and identifying more bugs based on code
coverage measurements.