Torsten Duwe <duwe@xxxxxx> writes: > As I mentioned earlier this year, it's a bad idea to call _mcount from > MMU helper functions (e.g. hash_page...), when the profiling/tracing/ > live-patching/whatever framewok might in turn cause another such fault. > Jikos suggested to use fine-grained control of these functions with the > "notrace" keyword in the Linux kernel. It is mapped to GCC's (4.8, FWIW) > __attribute__((no_instrument_function)), which, to my surprise, works > for -p and -pg nicely, but does not affect -mprofile-kernel at all! IIRC from when I was working on GCOV support in OPAL firmware (skiboot), this doesn't affect the code generated by -fprofile-arcs, so may not completely do what you want. -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
