Messages in this thread | | | Date | Tue, 27 Aug 2013 11:15:56 -0700 | Subject | Re: [PATCH 1/1] proc: make /proc/self point to thread | From | Linus Torvalds <> |
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On Tue, Aug 27, 2013 at 10:49 AM, Oleg Nesterov <oleg@redhat.com> wrote: > > Why? To me /proc/self == /proc/$((sys_gettid)) looks more natural. > Say, /proc/self/task... But this is subjective.
Actually, you're right - I incorrectly thought we had removed the thread id lookup from the top level in /proc. But we never actually did that. We only removed them from readdir.
So while you won't see thread id's in the directory listing, we *do* successfully look up thread id's when specified explicitly. It's confusing, but it happens to work. So you can do
ls -l /proc/<tid>/
and get the expected result, but if you do
ls -l /proc | grep <tid>
it won't actually show up unless the thread ID is also the thread group leader.
> Although to be honest, I was seduced by "Worth testing". I mean I am > just curious, who can suffer from this change? Nevermind, please > ignore.
Yeah, if we were to redesign /proc I'd do it differently, but I think we should just accept that it works "well enough" and there's just too much risk from making changes that aren't strictly required.
Linus
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