linux-kernel - Re: [PATCH 1/5] init/Kconfig: Fix break in middle of EXPERT menu

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Date:	Thu, 14 May 2015 08:46:51 -0700
From:	josh@...htriplett.org
To:	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Michal Hocko <mhocko@...e.cz>,
	Vladimir Davydov <vdavydov@...allels.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Andy Lutomirski <luto@...capital.net>,
	Bertrand Jacquin <beber@...eeweb.net>,
	"Luis R. Rodriguez" <mcgrof@...e.com>,
	Iulia Manda <iulia.manda21@...il.com>,
	Pranith Kumar <bobby.prani@...il.com>,
	Clark Williams <clark.williams@...il.com>,
	Mel Gorman <mgorman@...e.de>,
	Randy Dunlap <rdunlap@...radead.org>,
	Paul Bolle <pebolle@...cali.nl>, Michal Marek <mmarek@...e.cz>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] init/Kconfig: Fix break in middle of EXPERT menu

On Thu, May 14, 2015 at 08:35:23AM -0700, Josh Triplett wrote:
> Commit e1abf2cc8d5 ("bpf: Fix the build on BPF_SYSCALL=y &&
> !CONFIG_TRACING kernels, make it more configurable") made BPF_SYSCALL no
> longer hidden with !EXPERT, but left it in the middle of the EXPERT
> menu.  menuconfig stops putting config items under a submenu once it
> encounters an item that doesn't depend on the menu's config item, so
> this caused the remainder of the EXPERT menu to spill out into the
> containing menu around it.  Fix by moving BPF_SYSCALL before the EXPERT
> menu, next to BPF.
> 
> Fixes: e1abf2cc8d5 ("bpf: Fix the build on BPF_SYSCALL=y && !CONFIG_TRACING kernels, make it more configurable")
> Signed-off-by: Josh Triplett <josh@...htriplett.org>
> ---

This series should have been labeled as "v2".  Changes in v2: added CCs
to Michal Marek <mmarek@...e.cz> and linux-kbuild@...r.kernel.org, split
patch 4/4 into two patches, and added Paul's ack to those last two
patches.

>  init/Kconfig | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/init/Kconfig b/init/Kconfig
> index dc24dec..e2f16f1 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -1341,6 +1341,16 @@ config HAVE_PCSPKR_PLATFORM
>  config BPF
>  	bool
>  
> +# syscall, maps, verifier
> +config BPF_SYSCALL
> +	bool "Enable bpf() system call"
> +	select ANON_INODES
> +	select BPF
> +	default n
> +	help
> +	  Enable the bpf() system call that allows to manipulate eBPF
> +	  programs and maps via file descriptors.
> +
>  menuconfig EXPERT
>  	bool "Configure standard kernel features (expert users)"
>  	# Unhide debug options, to make the on-by-default options visible
> @@ -1535,16 +1545,6 @@ config EVENTFD
>  
>  	  If unsure, say Y.
>  
> -# syscall, maps, verifier
> -config BPF_SYSCALL
> -	bool "Enable bpf() system call"
> -	select ANON_INODES
> -	select BPF
> -	default n
> -	help
> -	  Enable the bpf() system call that allows to manipulate eBPF
> -	  programs and maps via file descriptors.
> -
>  config SHMEM
>  	bool "Use full shmem filesystem" if EXPERT
>  	default y
> -- 
> 2.1.4
> 
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