On Mon 20-01-25 16:43:31, Christian Brauner wrote: > > that it's not a big deal. I'm watching with a bit of concern developments > > like BTF which try to provide some illusion of stability where there isn't > > much of it. So some tool could spread wide enough without getting regularly > > broken that breaking it will become a problem. But that is not really the > > topic of this discussion. > > We've stated over and over and will document that we give no stability > guarantees in that regard. I'm fully in support of stating that and documenting that because setting the expectation is important. And I'm also in support of adding tracepoints to VFS. As Ted wrote, so far both kernel and userspace parts of tracing were able live along together smoothly (at least from the kernel side ;)). But I've also heard Linus explicitely saying something along the lines that if a change in a trace point breaks real users, he's going to revert that change no matter what you've documented. So we have to take that possibility into account as well. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
