On Fri, Jul 12, 2013 at 11:13 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > I also don't see it helping with the JIT stuff; you still need to write out a > file with symbol information, we still need to find the file. A less hacky > solution for the entire JIT thing is you writing a proper ELF-DSO and > mmap()'ing that :-) > > Storing a JIT specific userspace pointer in the VMA doesn't help with any of > that. I'm thinking about corner cases like 'perf top' here. I don't see how we can write out a ELF-DSO because the JIT compiler can generate new symbols at any given time. That's what made me think it'd be best for the _kernel_ to know about the symbols so that perf could take advantage of that as well. Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>