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

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?


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