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From: Thomas Gleixner <tglx@linutronix.de>
To: Shaohua Li <shli@fb.com>
Cc: "Yu, Fenghua" <fenghua.yu@intel.com>,
	"Luck, Tony" <tony.luck@intel.com>,
	"Anvin, H Peter" <h.peter.anvin@intel.com>,
	Ingo Molnar <mingo@elte.hu>,
	Peter Zijlstra <peterz@infradead.org>, Tejun Heo <tj@kernel.org>,
	Borislav Petkov <bp@suse.de>,
	Stephane Eranian <eranian@google.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	David Carrillo-Cisneros <davidcc@google.com>,
	"Shankar, Ravi V" <ravi.v.shankar@intel.com>,
	Vikas Shivappa <vikas.shivappa@linux.intel.com>,
	"Prakhya, Sai Praneeth" <sai.praneeth.prakhya@intel.com>,
	linux-kernel <linux-kernel@vger.kernel.org>, x86 <x86@kernel.org>
Subject: Re: [PATCH v2 06/33] Documentation, x86: Documentation for Intel resource allocation user interface
Date: Tue, 13 Sep 2016 15:27:14 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1609131525060.6233@nanos> (raw)
In-Reply-To: <20160912041539.GA56347@csimstu-mbp.local.dhcp.thefacebook.com>

On Sun, 11 Sep 2016, Shaohua Li wrote:
> On Sat, Sep 10, 2016 at 12:36:57AM +0000, Yu, Fenghua wrote:
> > One way to implement this is we can extend the current interface to accept
> > a resctrl file system mount parameter to switch b/w "procs" and "tasks" during
> > mount time. So the file sytem has either "procs" or "tasks" during run time. I don't think it's right to have both of them at the same time in the file system.
> 
> A mount option doesn't make sense, which just creates more trouble. What's
> wrong to have both of 'procs' and 'tasks' at the same time, like cgroup? I
> think it's more natural to support both. As for the content of 'procs' and
> 'tasks', we could follow how cgroup handle them.

Right. There is nothing wrong with having both, but the very first step is
to get the basic infrastructure merged. Adding 'procs' is a straight
forward add on which can be implemented on top of the primary patch
set. There is no design change required to support it later.

Thanks,

	tglx

  reply	other threads:[~2016-09-13 13:30 UTC|newest]

Thread overview: 96+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-08  9:56 [PATCH v2 00/33] Enable Intel Resource Allocation in Resource Director Technology Fenghua Yu
2016-09-08  9:56 ` [PATCH v2 01/33] cacheinfo: Introduce cache id Fenghua Yu
2016-09-09 15:01   ` Nilay Vaish
2016-09-08  9:56 ` [PATCH v2 02/33] Documentation, ABI: Add a document entry for " Fenghua Yu
2016-09-08 19:33   ` Thomas Gleixner
2016-09-09 15:11     ` Nilay Vaish
2016-09-08  9:56 ` [PATCH v2 03/33] x86, intel_cacheinfo: Enable cache id in x86 Fenghua Yu
2016-09-08  9:56 ` [PATCH v2 04/33] drivers/base/cacheinfo.c: Export some cacheinfo functions for others to use Fenghua Yu
2016-09-08  8:21   ` Thomas Gleixner
2016-09-08  9:56 ` [PATCH v2 05/33] x86/intel_rdt: Cache Allocation documentation Fenghua Yu
2016-09-08  9:57 ` [PATCH v2 06/33] Documentation, x86: Documentation for Intel resource allocation user interface Fenghua Yu
2016-09-08 11:22   ` Borislav Petkov
2016-09-08 22:01   ` Shaohua Li
2016-09-09  1:17     ` Fenghua Yu
2016-09-08 22:45       ` Shaohua Li
2016-09-09  7:22         ` Fenghua Yu
2016-09-09 17:50           ` Shaohua Li
2016-09-09 18:03             ` Luck, Tony
2016-09-09 21:43               ` Shaohua Li
2016-09-09 21:59                 ` Luck, Tony
2016-09-10  0:36                   ` Yu, Fenghua
2016-09-12  4:15                     ` Shaohua Li
2016-09-13 13:27                       ` Thomas Gleixner [this message]
2016-09-08  9:57 ` [PATCH v2 07/33] x86/intel_rdt: Add support for Cache Allocation detection Fenghua Yu
2016-09-08 11:50   ` Borislav Petkov
2016-09-08 16:53     ` Yu, Fenghua
2016-09-08 17:17       ` Borislav Petkov
2016-09-08 13:17   ` Thomas Gleixner
2016-09-08 13:59     ` Yu, Fenghua
2016-09-13 22:40   ` Dave Hansen
2016-09-13 22:52     ` Luck, Tony
2016-09-13 23:00       ` Dave Hansen
2016-09-08  9:57 ` [PATCH v2 08/33] x86/intel_rdt: Add Class of service management Fenghua Yu
2016-09-08  8:56   ` Thomas Gleixner
2016-09-12 16:02   ` Nilay Vaish
2016-09-08  9:57 ` [PATCH v2 09/33] x86/intel_rdt: Add L3 cache capacity bitmask management Fenghua Yu
2016-09-08  9:40   ` Thomas Gleixner
2016-09-12 16:10   ` Nilay Vaish
2016-09-08  9:57 ` [PATCH v2 10/33] x86/intel_rdt: Implement scheduling support for Intel RDT Fenghua Yu
2016-09-08  9:53   ` Thomas Gleixner
2016-09-15 21:36     ` Yu, Fenghua
2016-09-15 21:40       ` Luck, Tony
2016-09-13 17:55   ` Nilay Vaish
2016-09-08  9:57 ` [PATCH v2 11/33] x86/intel_rdt: Hot cpu support for Cache Allocation Fenghua Yu
2016-09-08 10:03   ` Thomas Gleixner
2016-09-13 18:18   ` Nilay Vaish
2016-09-13 19:10     ` Luck, Tony
2016-09-08  9:57 ` [PATCH v2 12/33] x86/intel_rdt: Intel haswell Cache Allocation enumeration Fenghua Yu
2016-09-08 10:08   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 13/33] Define CONFIG_INTEL_RDT Fenghua Yu
2016-09-08 10:14   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 14/33] x86/intel_rdt: Intel Code Data Prioritization detection Fenghua Yu
2016-09-08  9:57 ` [PATCH v2 15/33] x86/intel_rdt: Adds support to enable Code Data Prioritization Fenghua Yu
2016-09-08 10:18   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 16/33] x86/intel_rdt: Class of service and capacity bitmask management for CDP Fenghua Yu
2016-09-08 10:29   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 17/33] x86/intel_rdt: Hot cpu update for code data prioritization Fenghua Yu
2016-09-08 10:34   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 18/33] sched.h: Add rg_list and rdtgroup in task_struct Fenghua Yu
2016-09-08 10:36   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 19/33] magic number for resctrl file system Fenghua Yu
2016-09-08 10:41   ` Thomas Gleixner
2016-09-08 10:47     ` Borislav Petkov
2016-09-08  9:57 ` [PATCH v2 20/33] x86/intel_rdt.h: Header for inter_rdt.c Fenghua Yu
2016-09-08 12:36   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 21/33] x86/intel_rdt_rdtgroup.h: Header for user interface Fenghua Yu
2016-09-08 12:44   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 22/33] x86/intel_rdt.c: Extend RDT to per cache and per resources Fenghua Yu
2016-09-08 14:57   ` Thomas Gleixner
2016-09-13 22:54   ` Dave Hansen
2016-09-08  9:57 ` [PATCH v2 23/33] x86/intel_rdt_rdtgroup.c: User interface for RDT Fenghua Yu
2016-09-08 14:59   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 24/33] x86/intel_rdt_rdtgroup.c: Create info directory Fenghua Yu
2016-09-08 16:04   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 25/33] include/linux/resctrl.h: Define fork and exit functions in a new header file Fenghua Yu
2016-09-08 16:07   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 26/33] Task fork and exit for rdtgroup Fenghua Yu
2016-09-08 19:41   ` Thomas Gleixner
2016-09-13 23:13   ` Dave Hansen
2016-09-13 23:35     ` Luck, Tony
2016-09-14 14:28       ` Dave Hansen
2016-09-08  9:57 ` [PATCH v2 27/33] x86/intel_rdt_rdtgroup.c: Implement resctrl file system commands Fenghua Yu
2016-09-08 20:09   ` Thomas Gleixner
2016-09-08 22:04   ` Shaohua Li
2016-09-09  1:23     ` Fenghua Yu
2016-09-08  9:57 ` [PATCH v2 28/33] x86/intel_rdt_rdtgroup.c: Read and write cpus Fenghua Yu
2016-09-08 20:25   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 29/33] x86/intel_rdt_rdtgroup.c: Tasks iterator and write Fenghua Yu
2016-09-08 20:50   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 30/33] x86/intel_rdt_rdtgroup.c: Process schemata input from resctrl interface Fenghua Yu
2016-09-08 22:20   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 31/33] Documentation/kernel-parameters: Add kernel parameter "resctrl" for CAT Fenghua Yu
2016-09-08 22:25   ` Thomas Gleixner
2016-09-08  9:57 ` [PATCH v2 32/33] MAINTAINERS: Add maintainer for Intel RDT resource allocation Fenghua Yu
2016-09-08  9:57 ` [PATCH v2 33/33] x86/Makefile: Build intel_rdt_rdtgroup.c Fenghua Yu
2016-09-08 23:59   ` Thomas Gleixner

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