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Date:      Tue, 10 Feb 2015 18:36:23 +0000
From:      David Chisnall <theraven@FreeBSD.org>
To:        Rui Paulo <rpaulo@me.com>
Cc:        "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, Adrian Chadd <adrian@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, John Baldwin <jhb@freebsd.org>
Subject:   Re: svn commit: r278479 - in head: etc sys/kern
Message-ID:  <575FA8C1-0204-455C-A35A-787C48066AA5@FreeBSD.org>
In-Reply-To: <8e5503e1-755c-49e4-ab4d-a0ad1ae91f97@me.com>
References:  <8e5503e1-755c-49e4-ab4d-a0ad1ae91f97@me.com>

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On 10 Feb 2015, at 18:30, Rui Paulo <rpaulo@me.com> wrote:
>=20
> Another thing I had in mind (which is more work) was to abstract the =
devctl kernel code in an API which could make it easy to fan out the =
notifications to multiple /dev devices.  However, that may be overkill.

This kind of notification is something that kdbus is increasingly being =
used for on Linux.  The primitive allows events to originate either in =
the kernel or in userspace and to be sent either point-to-point or to a =
bloom filter set of recipients (so you occasionally get some messages =
you're not expecting, but hopefully don't get too many spurious =
wakeups).

David




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