From: Nicholas Miell <nmiell@comcast.net>
To: Davide Libenzi <davidel@xmailserver.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Linux Kernel list <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes
Date: Tue, 05 Jun 2007 17:15:36 -0700 [thread overview]
Message-ID: <1181088936.2788.10.camel@entropy> (raw)
In-Reply-To: <Pine.LNX.4.64.0706051710140.23673@alien.or.mcafeemobile.com>
On Tue, 2007-06-05 at 17:11 -0700, Davide Libenzi wrote:
> On Tue, 5 Jun 2007, Nicholas Miell wrote:
>
> > Yes, that's certainly wrong, but that's an implementation issue. I was
> > more concerned about the design of the API.
> >
> > Naively, I would expect a reads on a signalfd to return either process
> > signals or thread signals targeted towards the thread doing the read.
> >
> > What it actually does (delivering process signals or thread signals
> > targeted towards the thread that created the signalfd) is weird.
> >
> > For one, it means you can't create a single signalfd, stick it in an
> > epoll set, and then wait on that set from multiple threads.
>
> In your box threads do share the sighand, don't they? :)
>
I have no idea what you're trying to say, but it doesn't appear to
address the issue I raise.
--
Nicholas Miell <nmiell@comcast.net>
next prev parent reply other threads:[~2007-06-06 0:15 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-05 1:25 [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes Benjamin Herrenschmidt
2007-06-05 1:44 ` Linus Torvalds
2007-06-05 2:10 ` Benjamin Herrenschmidt
2007-06-05 2:38 ` Davide Libenzi
2007-06-05 3:22 ` Benjamin Herrenschmidt
2007-06-05 6:09 ` Nicholas Miell
2007-06-05 7:27 ` Benjamin Herrenschmidt
2007-06-05 23:51 ` Nicholas Miell
2007-06-06 0:03 ` Benjamin Herrenschmidt
2007-06-06 0:11 ` Davide Libenzi
2007-06-06 0:15 ` Nicholas Miell [this message]
2007-06-06 0:37 ` Davide Libenzi
2007-06-06 0:58 ` signalfd API issues (was Re: [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes) Nicholas Miell
2007-06-06 2:50 ` Benjamin Herrenschmidt
2007-06-06 3:29 ` Davide Libenzi
2007-06-06 3:37 ` Linus Torvalds
2007-06-06 4:08 ` Nicholas Miell
2007-06-06 4:18 ` Benjamin Herrenschmidt
2007-06-06 4:35 ` Davide Libenzi
2007-06-06 6:47 ` Benjamin Herrenschmidt
2007-06-06 22:36 ` Davide Libenzi
2007-06-06 3:52 ` Benjamin Herrenschmidt
2007-06-06 12:52 ` Jeff Dike
2007-06-06 22:43 ` Paul Mackerras
2007-06-07 2:20 ` Jeff Dike
2007-06-07 3:29 ` Benjamin Herrenschmidt
2007-06-07 13:59 ` Jeff Dike
2007-06-07 3:21 ` Benjamin Herrenschmidt
2007-06-05 15:52 ` [PATCH/RFC] signal races/bugs, losing TIF_SIGPENDING and other woes Davide Libenzi
2007-06-05 22:15 ` Benjamin Herrenschmidt
2007-06-05 22:50 ` Davide Libenzi
2007-06-05 22:59 ` Benjamin Herrenschmidt
2007-06-06 0:11 ` Davide Libenzi
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