Re: [RFC] better visibility into kworkers

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On Wed, May 16, 2018 at 2:00 PM Linus Torvalds <
torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Wed, May 16, 2018 at 1:45 PM Carlos O'Donell <carlos@xxxxxxxxxx> wrote:

> > Do we care at all that userspace has been wanting a safe interface for
> > setproctitle() for a long time? Particularly one without a 16-byte
limit.
> > Might we solve two problems at once?

> Note that we'll inevitably always have *some* limit, so I doubt we'll ever
> get over that.

> And we actually do have a way to fill comm. Writing to /proc/<pid>/comm
> already does exactly that. It obviously will truncate to whatever the
> current limit is, but you can write anything you want.

Or you can use prctl(PR_SET_NAME, ...).
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