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Re: [PATCH 0/4] futex: get_user_pages_fast() for shared futexes

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From: Ulrich Drepper
Subject: Re: [PATCH 0/4] futex: get_user_pages_fast() for shared futexes
Date: Tuesday, September 30, 2008 - 8:13 pm

On Tue, Sep 30, 2008 at 3:55 AM, Eric Dumazet <dada1@cosmosbay.com> wrote:

We considered this back when but any effort seems too much.  We'd
either need a clone flag (a scarce resource) or replace the set_tid
_address syscall.  Given that the futex is woken once per thread
lifetime it shouldn't be an issue.  If the semaphore shows up even
after this patch feel free to introduce a new set_tid_address syscall.
--
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Messages in current thread:
[PATCH 0/4] futex: get_user_pages_fast() for shared futexes, Peter Zijlstra, (Fri Sep 26, 10:32 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Ingo Molnar, (Sat Sep 27, 9:17 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Nick Piggin, (Tue Sep 30, 12:21 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Peter Zijlstra, (Tue Sep 30, 1:51 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Ingo Molnar, (Tue Sep 30, 3:39 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Ingo Molnar, (Tue Sep 30, 3:39 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Nick Piggin, (Tue Sep 30, 3:42 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Eric Dumazet, (Tue Sep 30, 3:55 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Peter Zijlstra, (Tue Sep 30, 4:16 am)
Re: [PATCH 0/4] futex: get_user_pages_fast() for shared fu ..., Ulrich Drepper, (Tue Sep 30, 8:13 pm)