linux-kernel - Re: aio poll, io_pgetevents and a new in-kernel poll API V3

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Message-ID: <20180118185316.GA28425@lst.de>
Date:   Thu, 18 Jan 2018 19:53:16 +0100
From:   Christoph Hellwig <hch@....de>
To:     Colin Walters <walters@...bum.org>
Cc:     Jeff Moyer <jmoyer@...hat.com>, Christoph Hellwig <hch@....de>,
        viro@...iv.linux.org.uk, Avi Kivity <avi@...lladb.com>,
        linux-aio@...ck.org, linux-fsdevel@...r.kernel.org,
        netdev@...r.kernel.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: aio poll, io_pgetevents and a new in-kernel poll API V3

On Thu, Jan 18, 2018 at 12:55:47PM -0500, Colin Walters wrote:
> 
> FWIW: https://git.gnome.org/browse/glib/commit/?id=3904c8761a60dbadbdfaf98fe23ff19cbdcc4a9a
> 
> Since that a lot of userspace (including NetworkManager) uses eventfd. I haven't
> tried this patchset myself but I'd look at what the GLib mainloop is doing.

eventfd really isn't the interesting piece, the interesting piece
is epoll, especially if used in level triggered mode.