Re: [PATCH 1/2] perf: Add munmap callback

[Liang, Kan]

On 11/6/2018 10:00 AM, Stephane Eranian wrote:
> > > /*
> > > * mmap 1 page at the location of the unmap page (should reuse virtual space)
> > > * This creates a continuous region built from two mmaps and
> > > potentially two different sources
> > > * especially with jitted runtimes
> > > */
> > The two mmaps are both anon. As my understanding, we cannot symbolize
> > from the anonymous address, can we?
> Can't we build the same test case using an actual file mapping (both
> mmap from the same file)?

If they are from same file, both mmap have same symbolization name.
We don't need to distinguish them either.

I thought the symbolization issue can only happen when two mmaps are 
from different sources. Right?

Thanks,
Kan