linux-kernel - Re: [PATCH] kconfig: remove EXPERT from CHECKPOINT

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Message-Id: <20180712134717.GB4676@linux.ibm.com>
Date:   Thu, 12 Jul 2018 15:47:17 +0200
From:   Hendrik Brueckner <brueckner@...ux.ibm.com>
To:     Adrian Reber <adrian@...as.de>
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Pavel Emelyanov <xemul@...tuozzo.com>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Andrei Vagin <avagin@...tuozzo.com>,
        Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>,
        alice@...ux.ibm.com
Subject: Re: [PATCH] kconfig: remove EXPERT from CHECKPOINT_RESTORE

On Thu, Jul 12, 2018 at 03:07:33PM +0200, Adrian Reber wrote:
> The CHECKPOINT_RESTORE configuration option was introduced in 2012 and
> combined with EXPERT. CHECKPOINT_RESTORE is already enabled in many
> distribution kernels and also part of the defconfigs of various
> architectures.
> 
> To make it easier for distributions to enable CHECKPOINT_RESTORE this
> removes EXPERT and moves the configuration option out of the EXPERT
> block.
> 
> Signed-off-by: Adrian Reber <adrian@...as.de>
> Cc: Oleg Nesterov <oleg@...hat.com>
> Cc: Pavel Emelyanov <xemul@...tuozzo.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Eric W. Biederman <ebiederm@...ssion.com>
> Cc: Andrei Vagin <avagin@...tuozzo.com>
> Cc: Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>
> ---
>  init/Kconfig | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/init/Kconfig b/init/Kconfig
> index 041f3a022122..9c529c763326 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -932,6 +932,18 @@ config NET_NS
> 
>  endif # NAMESPACES
> 
> +config CHECKPOINT_RESTORE
> +	bool "Checkpoint/restore support"
> +	select PROC_CHILDREN
> +	default n
> +	help
> +	  Enables additional kernel features in a sake of checkpoint/restore.
> +	  In particular it adds auxiliary prctl codes to setup process text,
> +	  data and heap segment sizes, and a few additional /proc filesystem
> +	  entries.
> +
> +	  If unsure, say N here.
> +
>  config SCHED_AUTOGROUP
>  	bool "Automatic process group scheduling"
>  	select CGROUPS
> @@ -1348,18 +1360,6 @@ config MEMBARRIER
> 
>  	  If unsure, say Y.
> 
> -config CHECKPOINT_RESTORE
> -	bool "Checkpoint/restore support" if EXPERT
> -	select PROC_CHILDREN
> -	default n
> -	help
> -	  Enables additional kernel features in a sake of checkpoint/restore.
> -	  In particular it adds auxiliary prctl codes to setup process text,
> -	  data and heap segment sizes, and a few additional /proc filesystem
> -	  entries.
> -
> -	  If unsure, say N here.
> -
>  config KALLSYMS
>  	 bool "Load all symbols for debugging/ksymoops" if EXPERT
>  	 default y

Thanks!

Reviewed-by: Hendrik Brueckner <brueckner@...ux.ibm.com>