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From: "Moger, Babu" <bmoger@amd.com>
To: Aaron Tomlin <atomlin@atomlin.com>
Cc: "Luck, Tony" <tony.luck@intel.com>,
	"Chatre, Reinette" <reinette.chatre@intel.com>,
	"Dave.Martin@arm.com" <Dave.Martin@arm.com>,
	"james.morse@arm.com" <james.morse@arm.com>,
	"babu.moger@amd.com" <babu.moger@amd.com>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"bp@alien8.de" <bp@alien8.de>,
	"dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
	"sean@ashe.io" <sean@ashe.io>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 3/3] x86/resctrl: Add "*" shorthand to set minimum io_alloc CBM for all domains
Date: Thu, 18 Dec 2025 18:40:23 -0600	[thread overview]
Message-ID: <6aa6ac29-462a-453f-ace8-43aef9ed67c4@amd.com> (raw)
In-Reply-To: <u7wdul44ca2cdquqbnnnvcffc2vcrg4yplm2krhupbrfruxkph@o2hc5obfonr6>

Hi Aaron,

On 12/18/2025 6:31 PM, Aaron Tomlin wrote:
> On Thu, Dec 18, 2025 at 03:56:24PM -0600, Moger, Babu wrote:
>>> Why is io_alloc special? The same simple change could apply to
>>> parse_line() to allow setting all domains in a resource to be set to
>>> the same value:
> 
> Hi Tony, Babu,
> 
>> Yes. I am fine with that approach. Treat "*" equivalent for all the
>> resources not just io_alloc.
> 
> No. While I appreciate the desire for a more uniform interface, I would
> strongly suggest that this particular change remain applicable only to
> io_alloc for the time being. If I recall correctly, the architectural
> requirements for other resources differ enough that the suggested approach
> may not be universally applicable or appropriate in every case, no?
> 

Yes. That is correct. Lets do this only for io_alloc.

Reinette commented on the already.

https://lore.kernel.org/lkml/a76c2eee-2a64-42ab-b81c-90638321cd15@intel.com/

Thanks
Babu

  reply	other threads:[~2025-12-19  0:40 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-15 23:02 [PATCH v2 0/3] " Aaron Tomlin
2025-12-15 23:02 ` [PATCH v2 1/3] fs/resctrl: Add helpers to check io_alloc support and enabled state Aaron Tomlin
2025-12-17  5:01   ` Reinette Chatre
2025-12-18 23:22     ` Aaron Tomlin
2025-12-19 17:05       ` Reinette Chatre
2025-12-25 22:23         ` Aaron Tomlin
2025-12-15 23:02 ` [PATCH v2 2/3] fs/resctrl: Return -EINVAL for a missing seq_show implementation Aaron Tomlin
2025-12-17  5:02   ` Reinette Chatre
2025-12-18 23:12     ` Aaron Tomlin
2025-12-15 23:02 ` [PATCH v2 3/3] x86/resctrl: Add "*" shorthand to set minimum io_alloc CBM for all domains Aaron Tomlin
2025-12-17  5:53   ` Reinette Chatre
2025-12-19  0:21     ` Aaron Tomlin
2025-12-18 21:32   ` Moger, Babu
2025-12-18 21:49     ` Luck, Tony
2025-12-18 21:56       ` Moger, Babu
2025-12-19  0:31         ` Aaron Tomlin
2025-12-19  0:40           ` Moger, Babu [this message]
2025-12-18 22:59       ` Reinette Chatre
2025-12-19  0:44         ` Aaron Tomlin
2025-12-19 18:28           ` Reinette Chatre
2025-12-19 20:42             ` Luck, Tony
2025-12-19 22:00               ` Reinette Chatre
2025-12-19 23:05                 ` Luck, Tony
2025-12-25 22:50                   ` Aaron Tomlin
2025-12-25 22:33             ` Aaron Tomlin
2025-12-19  0:26     ` Aaron Tomlin

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