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From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	kernel-team-b10kYP2dOMg@public.gmane.org,
	cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2 2/2] cgroup: export list of cgroups v2 features using sysfs
Date: Mon, 6 Nov 2017 12:02:31 -0800	[thread overview]
Message-ID: <20171106200231.GF3252168@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <20171106183029.21297-2-guro-b10kYP2dOMg@public.gmane.org>

On Mon, Nov 06, 2017 at 01:30:29PM -0500, Roman Gushchin wrote:
> The active development of cgroups v2 sometimes leads to a creation
> of interfaces, which are not turned on by default (to provide
> backward compatibility). It's handy to know from userspace, which
> cgroup v2 features are supported without calculating it based
> on the kernel version. So, let's export the list of such features
> using /sys/kernel/cgroup/features pseudo-file.
> 
> The list is hardcoded and has to be extended when new functionality
> is added. Each feature is printed on a new line.
> 
> Example:
>   $ cat /sys/kernel/cgroup/features
>   nsdelegate
> 
> Signed-off-by: Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>
> Cc: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: kernel-team-b10kYP2dOMg@public.gmane.org

Applied 1-2 to cgroup/for-4.15.

Thanks.

-- 
tejun

WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: Roman Gushchin <guro@fb.com>
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
	cgroups@vger.kernel.org
Subject: Re: [PATCH v2 2/2] cgroup: export list of cgroups v2 features using sysfs
Date: Mon, 6 Nov 2017 12:02:31 -0800	[thread overview]
Message-ID: <20171106200231.GF3252168@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <20171106183029.21297-2-guro@fb.com>

On Mon, Nov 06, 2017 at 01:30:29PM -0500, Roman Gushchin wrote:
> The active development of cgroups v2 sometimes leads to a creation
> of interfaces, which are not turned on by default (to provide
> backward compatibility). It's handy to know from userspace, which
> cgroup v2 features are supported without calculating it based
> on the kernel version. So, let's export the list of such features
> using /sys/kernel/cgroup/features pseudo-file.
> 
> The list is hardcoded and has to be extended when new functionality
> is added. Each feature is printed on a new line.
> 
> Example:
>   $ cat /sys/kernel/cgroup/features
>   nsdelegate
> 
> Signed-off-by: Roman Gushchin <guro@fb.com>
> Cc: Tejun Heo <tj@kernel.org>
> Cc: kernel-team@fb.com

Applied 1-2 to cgroup/for-4.15.

Thanks.

-- 
tejun

  parent reply	other threads:[~2017-11-06 20:02 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-03 17:46 [PATCH 1/2] cgroup: export list of delegatable control files using sysfs Roman Gushchin
2017-11-03 17:46 ` [PATCH 2/2] cgroup: export list of cgroups v2 features " Roman Gushchin
2017-11-03 17:56 ` [PATCH 1/2] cgroup: export list of delegatable control files " Tejun Heo
2017-11-06 17:38   ` Tejun Heo
     [not found]     ` <20171106173854.GE3252168-4dN5La/x3IkLX0oZNxdnEQ2O0Ztt9esIQQ4Iyu8u01E@public.gmane.org>
2017-11-06 18:30       ` [PATCH v2 " Roman Gushchin
2017-11-06 18:30         ` Roman Gushchin
     [not found]         ` <20171106183029.21297-1-guro-b10kYP2dOMg@public.gmane.org>
2017-11-06 18:30           ` [PATCH v2 2/2] cgroup: export list of cgroups v2 features " Roman Gushchin
2017-11-06 18:30             ` Roman Gushchin
     [not found]             ` <20171106183029.21297-2-guro-b10kYP2dOMg@public.gmane.org>
2017-11-06 20:02               ` Tejun Heo [this message]
2017-11-06 20:02                 ` Tejun Heo

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