linux-kernel - Re: [PATCH 1/1] posix-timers: Show clock ID in proc file

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Date:	Fri, 17 May 2013 08:59:16 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Pavel Tikhomirov <snorcht@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Matthew Helsley <matt.helsley@...il.com>,
	linux-api@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Pavel Emelyanov <xemul@...allels.com>
Subject: Re: [PATCH 1/1] posix-timers: Show clock ID in proc file

On Fri, May 17, 2013 at 02:12:03AM +0400, Pavel Tikhomirov wrote:
> Expand information about posix-timers in /proc/<pid>/timers by adding
> info about clock, with which the timer was created. I.e. in the forth
> line of timer info after "notify:" line go "ClockID: <clock_id>".
> 
> Signed-off-by: Pavel Tikhomirov <snorcht@...il.com>
> ---
>  fs/proc/base.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/fs/proc/base.c b/fs/proc/base.c
> index 2dad4a9..8a38eef 100644
> --- a/fs/proc/base.c
> +++ b/fs/proc/base.c
> @@ -2079,6 +2079,7 @@ static int show_timer(struct seq_file *m, void *v)
>  		nstr[notify & ~SIGEV_THREAD_ID],
>  		(notify & SIGEV_THREAD_ID) ? "tid" : "pid",
>  		pid_nr_ns(timer->it_pid, tp->ns));
> +	seq_printf(m, "ClockID: %d\n", timer->it_clock);

What userspace tool just broke by adding a new field to this file?

thanks,

greg k-h
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