[Cbe-oss-dev] [PATCH 1/2] [manpages] spufs.7: clarify ibox description

[Michael Kerrisk]

Thanks Jeremy!  I'll probably put these changes into 2.74, which will
be out in a few days.

On Dec 19, 2007 5:15 AM, Jeremy Kerr <jk at ozlabs.org> wrote:
> Add a little information about the differences to mbox
>
> Signed-off-by: Jeremy Kerr <jk at ozlabs.org>
>
> ---
>
>  spufs.7 |   13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)
>
> Index: manpages/spufs.7
> ===================================================================
> --- manpages.orig/spufs.7
> +++ manpages/spufs.7
> @@ -198,9 +198,18 @@ the data buffer and the value four is re
>  .I /ibox
>  The second SPU-to-CPU communication mailbox.
>  This file is similar to the first mailbox file, but can be read
> -in blocking I/O mode, thus
> +in blocking I/O mode, thus calling
> +.BR read (2)
> +on an open
> +.I ibox
> +file will block until the SPU has written data to its interrupt mailbox
> +channel (unless the file has been opened with
> +.BR O_NONBLOCK ,
> +see below). Also,
>  .BR poll (2)
> -and similar system calls can be used to monitor this file.
> +and similar system calls can be used to monitor for the presence
> +of mailbox data.
> +
>  The possible operations on an open
>  .I ibox
>  file are:
>



-- 
Michael Kerrisk
Maintainer of the Linux man-pages project
http://www.kernel.org/doc/man-pages/
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