linux-kernel - Re: [PATCH v17 02/16] cgroup/misc: Add per resource callbacks for CSS events

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Message-ID: <1fe27f4dfbfbdc887458df88b2ebedc9cbd2d566.camel@intel.com>
Date: Mon, 2 Sep 2024 09:43:21 +0000
From: "Huang, Kai" <kai.huang@...el.com>
To: "chenridong@...wei.com" <chenridong@...wei.com>,
	"linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>,
	"cgroups@...r.kernel.org" <cgroups@...r.kernel.org>, "mkoutny@...e.com"
	<mkoutny@...e.com>, "dave.hansen@...ux.intel.com"
	<dave.hansen@...ux.intel.com>, "haitao.huang@...ux.intel.com"
	<haitao.huang@...ux.intel.com>, "tim.c.chen@...ux.intel.com"
	<tim.c.chen@...ux.intel.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "mingo@...hat.com" <mingo@...hat.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>, "tj@...nel.org" <tj@...nel.org>,
	"jarkko@...nel.org" <jarkko@...nel.org>, "Mehta, Sohil"
	<sohil.mehta@...el.com>, "hpa@...or.com" <hpa@...or.com>, "bp@...en8.de"
	<bp@...en8.de>, "x86@...nel.org" <x86@...nel.org>
CC: "mikko.ylinen@...ux.intel.com" <mikko.ylinen@...ux.intel.com>,
	"seanjc@...gle.com" <seanjc@...gle.com>, "anakrish@...rosoft.com"
	<anakrish@...rosoft.com>, "Zhang, Bo" <zhanb@...rosoft.com>,
	"kristen@...ux.intel.com" <kristen@...ux.intel.com>, "yangjie@...rosoft.com"
	<yangjie@...rosoft.com>, "Li, Zhiquan1" <zhiquan1.li@...el.com>,
	"chrisyan@...rosoft.com" <chrisyan@...rosoft.com>
Subject: Re: [PATCH v17 02/16] cgroup/misc: Add per resource callbacks for CSS
 events

On Fri, 2024-08-30 at 09:40 -0700, Haitao Huang wrote:
> From: Kristen Carlson Accardi <kristen@...ux.intel.com>
> 
> The misc cgroup controller (subsystem) currently does not perform
> resource type specific action for Cgroups Subsystem State (CSS) events:
> the 'css_alloc' event when a cgroup is created and the 'css_free' event
> when a cgroup is destroyed.
> 
> Define callbacks for those events and allow resource providers to
> register the callbacks per resource type as needed. This will be
> utilized later by the EPC misc cgroup support implemented in the SGX
> driver.
> 
> The SGX callbacks will need to access the 'struct misc_cg'.  Pass
> 'struct misc_cg' to the callbacks but not the 'struct misc_res' because
> the latter doesn't have a pointer pointing back to 'struct misc_cg'.
> 
> Link: https://lore.kernel.org/lkml/op.2kdw36otwjvjmi@hhuan26-mobl.amr.corp.intel.com/
> 
> Signed-off-by: Kristen Carlson Accardi <kristen@...ux.intel.com>
> Co-developed-by: Haitao Huang <haitao.huang@...ux.intel.com>
> Signed-off-by: Haitao Huang <haitao.huang@...ux.intel.com>
> Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
> Reviewed-by: Tejun Heo <tj@...nel.org>
> Tested-by: Jarkko Sakkinen <jarkko@...nel.org>
> ---
> 

Acked-by: Kai Huang <kai.huang@...el.com>