linux-kernel - Re: [rfc 1/3] fs, proc: Add start_data, end_data, start

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Message-ID: <4ED54146.6000507@canonical.com>
Date:	Tue, 29 Nov 2011 14:32:06 -0600
From:	Serge Hallyn <serge.hallyn@...onical.com>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>
CC:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, Andrew Vagin <avagin@...nvz.org>,
	Pavel Emelyanov <xemul@...allels.com>,
	Vasiliy Kulikov <segoon@...nwall.com>
Subject: Re: [rfc 1/3] fs, proc: Add start_data, end_data, start_brk members
 to /proc/$pid/stat

On 11/29/2011 01:12 PM, Cyrill Gorcunov wrote:
> It helps to dump and restore this mm_struct members.
>
> Signed-off-by: Cyrill Gorcunov<gorcunov@...nvz.org>

Acked-by: Serge Hallyn <serge.hallyn@...onical.com>

> ---
>   fs/proc/array.c |    7 +++++--
>   1 file changed, 5 insertions(+), 2 deletions(-)
>
> Index: linux-2.6.git/fs/proc/array.c
> ===================================================================
> --- linux-2.6.git.orig/fs/proc/array.c
> +++ linux-2.6.git/fs/proc/array.c
> @@ -464,7 +464,7 @@ static int do_task_stat(struct seq_file
>
>   	seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \
>   %lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
> -%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n",
> +%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld %lu %lu %lu\n",
>   		pid_nr_ns(pid, ns),
>   		tcomm,
>   		state,
> @@ -511,7 +511,10 @@ static int do_task_stat(struct seq_file
>   		task->policy,
>   		(unsigned long long)delayacct_blkio_ticks(task),
>   		cputime_to_clock_t(gtime),
> -		cputime_to_clock_t(cgtime));
> +		cputime_to_clock_t(cgtime),
> +		mm ? (permitted ? mm->start_data : 1) : 0,
> +		mm ? (permitted ? mm->end_data : 1) : 0,
> +		mm ? (permitted ? mm->start_brk : 1) : 0);
>   	if (mm)
>   		mmput(mm);
>   	return 0;
>

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