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