From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linus Torvalds <torvalds@osdl.org>
Cc: jnf <jnf@innocence-lost.net>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
David Woodhouse <dwmw2@infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
akpm@osdl.org, drepper@redhat.com
Subject: Re: Add pselect, ppoll system calls.
Date: Mon, 13 Jun 2005 17:23:21 +1000 [thread overview]
Message-ID: <1118647401.5986.91.camel@gaston> (raw)
In-Reply-To: <Pine.LNX.4.58.0506122018230.2286@ppc970.osdl.org>
> One pretty simple alternative is to just make the timeout be a global, and
> have the signal handler clear it, guaranteeing that if we're just about to
> hit the select(), we'll exit immediately.
That is still racy ... if the signal hits between loading that global to
to pass it to select and the actual syscall entry ... pretty narrow but
still there.
next prev parent reply other threads:[~2005-06-13 7:25 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-10 22:58 Add pselect, ppoll system calls David Woodhouse
2005-06-12 22:48 ` Alan Cox
2005-06-13 0:26 ` Linus Torvalds
2005-06-13 1:16 ` jnf
2005-06-13 3:26 ` Linus Torvalds
2005-06-13 6:22 ` Ulrich Drepper
2005-06-13 9:16 ` bert hubert
2005-06-13 9:41 ` David Woodhouse
2005-06-13 11:05 ` Christoph Hellwig
2005-06-13 11:14 ` Jakub Jelinek
2005-06-13 11:24 ` David Woodhouse
2005-06-13 15:38 ` Ulrich Drepper
2005-06-13 16:02 ` David Woodhouse
2005-06-13 16:10 ` Ulrich Drepper
2005-06-13 16:29 ` David Woodhouse
2005-06-13 16:31 ` Ulrich Drepper
2005-06-13 21:58 ` David Woodhouse
2005-06-13 22:01 ` Ulrich Drepper
2005-06-13 16:36 ` Jakub Jelinek
2005-06-15 11:36 ` David Woodhouse
2005-08-05 10:42 ` pselect() modifying timeout Michael Kerrisk
2005-08-05 14:50 ` Ulrich Drepper
2005-08-05 20:08 ` Michael Kerrisk
2005-08-08 11:10 ` Alan Cox
2005-08-05 11:58 ` Add pselect, ppoll system calls Michael Kerrisk
2005-08-05 12:49 ` Michael Kerrisk
2005-08-25 0:04 ` David Woodhouse
2005-08-25 0:34 ` Ulrich Drepper
2005-08-26 6:46 ` Michael Kerrisk
2005-06-13 15:35 ` Ulrich Drepper
2005-06-13 7:23 ` Benjamin Herrenschmidt [this message]
2005-06-13 7:29 ` David Woodhouse
2005-06-13 22:56 ` Benjamin Herrenschmidt
2005-06-13 11:15 ` Alan Cox
2005-06-13 11:27 ` David Woodhouse
2005-06-13 15:40 ` Ulrich Drepper
-- strict thread matches above, loose matches on Subject: below --
2005-06-13 19:38 Mattias Engdegård
2005-06-13 19:57 ` Chris Friesen
2005-06-13 20:08 ` Mattias Engdegård
2005-06-13 20:23 ` Valdis.Kletnieks
2005-06-14 14:07 ` Mattias Engdegård
2005-06-14 14:16 ` Bernd Petrovitsch
2005-06-14 14:42 ` Mattias Engdegård
2005-06-14 14:54 ` Bernd Petrovitsch
2005-06-14 15:27 ` Valdis.Kletnieks
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