From: "Ulrich Drepper" <drepper@gmail.com>
To: "Roland McGrath" <roland@redhat.com>
Cc: "Ingo Molnar" <mingo@elte.hu>,
"Casey Dahlin" <cdahlin@redhat.com>,
"Linux Kernel" <linux-kernel@vger.kernel.org>,
"Randy Dunlap" <randy.dunlap@oracle.com>,
"Oleg Nesterov" <oleg@redhat.com>,
"Davide Libenzi" <davidel@xmailserver.org>,
"Peter Zijlstra" <a.p.zijlstra@chello.nl>
Subject: Re: [RESEND][RFC PATCH v2] waitfd
Date: Wed, 7 Jan 2009 13:02:32 -0800 [thread overview]
Message-ID: <a36005b50901071302q70160bady41abc5ed2b105474@mail.gmail.com> (raw)
In-Reply-To: <20090107205322.5F8C7FC3E0@magilla.sf.frob.com>
On Wed, Jan 7, 2009 at 12:53 PM, Roland McGrath <roland@redhat.com> wrote:
> Do we really need another one for this? How about using signalfd plus
> setting the child's exit_signal to a queuing (SIGRTMIN+n) signal instead of
> SIGCHLD? It's slightly more magical for the userland process to know to do
> that (fork -> clone SIGRTMIN). But compared to adding a syscall we don't
> really have to add, maybe better.
Since waitfd shouldn't consume the child termination notification
waitfd should be more widely usable than the wait*() interfaces.
I.e., it's not necessary to restrict the use to parents. Any process
with the same UID should be allowed to call waitfd. This would allow
some new user cases.
next prev parent reply other threads:[~2009-01-07 21:02 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-06 18:11 [RFC " Casey Dahlin
2009-01-06 18:27 ` Alan Cox
2009-01-06 18:31 ` Randy Dunlap
2009-01-06 18:45 ` Casey Dahlin
2009-01-06 18:50 ` Randy Dunlap
2009-01-06 18:48 ` Andi Kleen
2009-01-06 19:07 ` [RESEND][RFC " Casey Dahlin
2009-01-07 12:34 ` Ingo Molnar
2009-01-07 13:05 ` Casey Dahlin
2009-01-07 15:00 ` Ingo Molnar
2009-01-07 17:19 ` Oleg Nesterov
2009-01-07 17:24 ` Ingo Molnar
2009-01-07 17:52 ` Davide Libenzi
2009-01-07 20:38 ` Casey Dahlin
2009-01-10 14:47 ` Scott James Remnant
2009-01-10 21:14 ` Casey Dahlin
2009-01-10 21:20 ` Scott James Remnant
2009-01-10 22:08 ` Casey Dahlin
2009-01-10 22:31 ` Oleg Nesterov
2009-01-10 22:37 ` Casey Dahlin
2009-01-10 22:46 ` Oleg Nesterov
2009-01-07 20:53 ` Roland McGrath
2009-01-07 20:58 ` Ingo Molnar
2009-01-07 21:05 ` Davide Libenzi
2009-01-07 21:50 ` Ingo Molnar
2009-01-07 21:02 ` Ulrich Drepper [this message]
2009-01-08 14:32 ` Oleg Nesterov
2009-01-08 19:35 ` Roland McGrath
2009-01-08 20:36 ` Casey Dahlin
2009-01-08 21:39 ` Oleg Nesterov
2009-01-10 14:52 ` Scott James Remnant
2009-01-10 16:19 ` Oleg Nesterov
2009-01-10 17:09 ` Scott James Remnant
2009-01-10 18:21 ` Oleg Nesterov
2009-01-10 18:46 ` Scott James Remnant
2009-01-10 14:50 ` Scott James Remnant
2009-01-10 21:20 ` Casey Dahlin
2009-01-08 22:04 ` Michael Kerrisk
2009-01-10 14:09 ` Scott James Remnant
2009-01-10 14:45 ` Scott James Remnant
2009-01-10 15:57 ` Oleg Nesterov
2009-01-10 17:07 ` Scott James Remnant
2009-01-10 18:13 ` Oleg Nesterov
2009-01-10 20:13 ` Scott James Remnant
2009-01-10 22:24 ` Oleg Nesterov
2009-01-10 23:14 ` Davide Libenzi
2009-01-10 22:25 ` Casey Dahlin
2009-01-10 23:11 ` Davide Libenzi
2011-03-02 1:37 ` Denys Vlasenko
2011-03-02 13:55 ` Oleg Nesterov
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