Jens Axboe <axboe@xxxxxxxxx> writes: > On 3/25/21 1:42 PM, Linus Torvalds wrote: >> On Thu, Mar 25, 2021 at 12:38 PM Linus Torvalds >> <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: >>> >>> I don't know what the gdb logic is, but maybe there's some other >>> option that makes gdb not react to them? >> >> .. maybe we could have a different name for them under the task/ >> subdirectory, for example (not just the pid)? Although that probably >> messes up 'ps' too.. > > Heh, I can try, but my guess is that it would mess up _something_, if > not ps/top. Hmm. So looking quickly the flip side of the coin is gdb (and other debuggers) needs a way to know these threads are special, so it can know not to attach. I suspect getting -EPERM (or possibly a different error code) when attempting attach is the right was to know that a thread is not available to be debugged. Eric
