> You're right it's extremely slow. But it can still be relevant for debugging, > at least for apps that don't do too much CPU bound stuffs.
There are patches from Markus already for gdb to use it (using the old BTS perf interface). I'm not sure they have been merged into gdb mainline yet though. > My hope has always been that we can make a userspace function graph tracer > out of its dumps. And I think we can, I'm pretty sure that would be a useful > tool. I wrote one, based on the __fentry__, like the kernel: http://github.com/andikleen/ftracer BTS has no timing information, so you could at best do a function tracer without timing. -Andi -- a...@linux.intel.com -- Speaking for myself only -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
