linux-kernel - Re: [rfc 2/2] docs: procfs -- Document timerfd output

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Message-ID: <CANaxB-wY_=1QRAfvJxZjKPY6ZkgHuZOQvRm0FVktbj6-tL1CbA@mail.gmail.com>
Date:	Mon, 31 Mar 2014 22:31:02 +0400
From:	Andrey Wagin <avagin@...il.com>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Shawn Landden <shawn@...rchofgit.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Павел Емельянов <xemul@...allels.com>
Subject: Re: [rfc 2/2] docs: procfs -- Document timerfd output

2014-03-31 21:54 GMT+04:00 Cyrill Gorcunov <gorcunov@...nvz.org>:
> CC: Shawn Landden <shawn@...rchofgit.com>
> CC: Thomas Gleixner <tglx@...utronix.de>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: Andrey Vagin <avagin@...nvz.org>
> CC: Pavel Emelyanov <xemul@...allels.com>
> Signed-off-by: Cyrill Gorcunov <gorcunov@...nvz.org>
> ---
>  Documentation/filesystems/proc.txt |    9 +++++++++
>  1 file changed, 9 insertions(+)
>
> Index: linux-2.6.git/Documentation/filesystems/proc.txt
> ===================================================================
> --- linux-2.6.git.orig/Documentation/filesystems/proc.txt
> +++ linux-2.6.git/Documentation/filesystems/proc.txt
> @@ -1741,6 +1741,15 @@ pair provide additional information part
>         While the first three lines are mandatory and always printed, the rest is
>         optional and may be omitted if no marks created yet.
>
> +       Timerfd files
> +       ~~~~~~~~~~~~~
> +       pos:    0
> +       flags:  02
> +       mnt_id: 9
> +       clockid: 0 ticks: 0

I would prefer to print "tick" on a separate line.

And we can print the current setting of the timer here. It can be
useful not only for CRIU but for other users too.

it_value: (5, 149234)
it_interval: (10, 0)

> +
> +       where 'clockid' is the clock type and 'ticks' is the number of the timer expirations
> +       that have occurred [see timerfd_create(2) for details].
>
>  ------------------------------------------------------------------------------
>  Configuring procfs
>
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