From: Thomas Gleixner <tglx@linutronix.de>
To: Michael Kerrisk <mtk-manpages@gmx.net>
Cc: david@hardeman.nu, davidel@xmailserver.org, drepper@redhat.com,
geoff@gclare.org.uk, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, hch@lst.de, corbet@lwn.net,
rdunlap@xenotime.net, vda.linux@googlemail.com,
torvalds@linux-foundation.org, Lee.Schermerhorn@hp.com
Subject: Re: RFC: A revised timerfd API
Date: Tue, 18 Sep 2007 13:30:11 +0200 [thread overview]
Message-ID: <1190115011.2995.126.camel@chaos> (raw)
In-Reply-To: <20070918110841.235150@gmx.net>
On Tue, 2007-09-18 at 13:08 +0200, Michael Kerrisk wrote:
> > > it does make the API a little more clumsy.
> >
> > Hmm, we might do something like:
> >
> > timer_gettime(fd | POSIX_TIMER_FD, .....);
> >
> > So the kernel looks up the fd in order to figure out the timer_id, which
> > needs to be referenced in filep->private_data anyway.
>
> And you'd need similar for timer_settime() and, perhaps,
> timer_getoverrun(). But it seems slightly ugly, in the same way that
> my idea in option (d) of returning a file descriptor from
> timer_create() seems a slightly ugly. (And can we guarantee that
> the [timerid] space is distinct from the [fd|POSIX_TIMER_FD] space?)
If we use the most significant bit for POSIX_TIMER_FD, we should be
fine.
tglx
next prev parent reply other threads:[~2007-09-18 11:30 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 7:27 RFC: A revised timerfd API Michael Kerrisk
2007-09-18 7:30 ` Michael Kerrisk
2007-09-18 8:05 ` David Härdeman
2007-09-18 9:01 ` Michael Kerrisk
2007-09-18 9:27 ` Thomas Gleixner
2007-09-18 9:10 ` Thomas Gleixner
2007-09-18 9:30 ` Michael Kerrisk
2007-09-18 9:42 ` Thomas Gleixner
2007-09-18 11:08 ` Michael Kerrisk
2007-09-18 11:30 ` Thomas Gleixner [this message]
2007-09-18 13:13 ` David Härdeman
2007-09-22 13:03 ` Michael Kerrisk
2007-09-18 16:51 ` Davide Libenzi
2007-09-22 13:12 ` Michael Kerrisk
2007-09-22 14:32 ` Bernd Eckenfels
2007-09-22 16:07 ` Michael Kerrisk
2007-09-22 17:05 ` Thomas Gleixner
2007-09-22 23:37 ` David Härdeman
2007-09-22 17:10 ` Thomas Gleixner
2007-09-22 21:07 ` Davide Libenzi
2007-09-22 21:26 ` Thomas Gleixner
2007-09-22 23:21 ` Davide Libenzi
2007-09-23 17:33 ` Michael Kerrisk
2007-09-23 18:33 ` Davide Libenzi
2007-09-23 18:41 ` Davide Libenzi
2007-09-23 19:03 ` Michael Kerrisk
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