Hi Luis, Nick, On Tue, Feb 01, 2022 at 07:09:23PM -0800, Luis Chamberlain wrote: [...] > > I don't see much traction based on what you have said on dtrace > on anything other than Oracle Linux stuff, it would be nice if bpftrace > folks were excited about your changes and we had support for that > there. I took a quick look at the v7 cover letter (I'll take a look at discussion from previous versions later if I get time) and it's not immediately obvious to me why a stable mapping is beneficial. Nick, could you elaborate why it's beneficial for dtrace to have a stable mapping? For what it's worth, bpftrace uses /proc/kallsyms rather rarely. bpftrace relies on perf_event_open()'s config1 parameter to resolve kernel symbol name to address for kprobe attachment. /proc/kallsyms is mostly used to resolve kaddr() calls in bpftrace scripts. Kernel symbol size information would be useful, though. bpftrace currently uses the vmlinux ELF to acquire that information. [...] Thanks, Daniel
