linux-kernel - Re: [PATCH 7/7] documentation for /proc/pid/coredump

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Message-Id: <20070527181729.e9e6d57c.randy.dunlap@oracle.com>
Date:	Sun, 27 May 2007 18:17:29 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Kawai, Hidehiro" <hidehiro.kawai.ez@...achi.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	dhowells@...hat.com, holt@....com, alan@...rguk.ukuu.org.uk,
	masami.hiramatsu.pt@...achi.com, yumiko.sugita.yf@...achi.com,
	soshima@...hat.com, haoki@...hat.com
Subject: Re: [PATCH 7/7] documentation for /proc/pid/coredump_filter

On Fri, 25 May 2007 22:12:55 +0900 Kawai, Hidehiro wrote:

> This patch adds the documentation for /proc/<pid>/coredump_filter.
> 
> Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>
> ---
>  Documentation/filesystems/proc.txt |   38 +++++++++++++++++++++++++++
>  1 files changed, 38 insertions(+)
> 
> Index: linux-2.6.22-rc2-mm1/Documentation/filesystems/proc.txt
> ===================================================================
> --- linux-2.6.22-rc2-mm1.orig/Documentation/filesystems/proc.txt
> +++ linux-2.6.22-rc2-mm1/Documentation/filesystems/proc.txt
> @@ -42,6 +42,7 @@ Table of Contents
>    2.12	/proc/<pid>/oom_adj - Adjust the oom-killer score
>    2.13	/proc/<pid>/oom_score - Display current oom-killer score
>    2.14	/proc/<pid>/io - Display the IO accounting fields
> +  2.15	/proc/<pid>/coredump_filter - Core dump filtering settings

Looks good.  Just one typo below.

 ------------------------------------------------------------------------------
>  Preface
> @@ -2135,4 +2136,41 @@ those 64-bit counters, process A could s
>  More information about this can be found within the taskstats documentation in
>  Documentation/accounting.
>  
> +2.15 /proc/<pid>/coredump_filter - Core dump filtering settings
> +---------------------------------------------------------------
> +When a process is dumped, all anonymous memory is written to a core file as
> +long as the size of the core file isn't limited. But sometimes we don't want
> +to dump some memory segments, for example, huge shared memory. Conversely,
> +sometimes we wnat to save file-backed memory segments into a core file, not

                want

> +only the individual files.

---
~Randy
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