From: Reinette Chatre <reinette.chatre@intel.com>
To: Tony Luck <tony.luck@intel.com>, Fenghua Yu <fenghuay@nvidia.com>,
"Maciej Wieczor-Retman" <maciej.wieczor-retman@intel.com>,
Peter Newman <peternewman@google.com>,
James Morse <james.morse@arm.com>,
Babu Moger <babu.moger@amd.com>,
Drew Fustini <dfustini@baylibre.com>,
Dave Martin <Dave.Martin@arm.com>, Chen Yu <yu.c.chen@intel.com>,
David E Box <david.e.box@intel.com>, <x86@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>,
<linux-kernel@vger.kernel.org>, <patches@lists.linux.dev>
Subject: Re: [PATCH v10 05/17] fs/resctrl: Add interface to disable a monitor event
Date: Mon, 17 Aug 2026 17:51:11 -0700 [thread overview]
Message-ID: <3d80bd53-6036-4a95-a036-16a87b09f1a9@intel.com> (raw)
In-Reply-To: <20260729172752.11561-6-tony.luck@intel.com>
Hi Tony,
On 7/29/26 10:27 AM, Tony Luck wrote:
> resctrl currently assumes all monitor events are enabled before any domain
> is created, because per-domain state is allocated by the architecture's CPU
> hotplug callbacks. There is no way to disable an event once registered.
>
> AET events are enumerated by the INTEL_PMT_TELEMETRY driver. To allow that
> driver to be a loadable module, resctrl must tolerate AET events appearing
> and disappearing, which requires the ability to disable an event when the
> driver is unloaded.
>
> Add resctrl_disable_mon_event(). The architecture owns domain lifetime
> and knows mount state, so it is responsible for calling this only while
> resctrl is unmounted and for cleaning up any per-domain state. Document
> those requirements in the kerneldoc since they are not enforced in code.
>
> Signed-off-by: Tony Luck <tony.luck@intel.com>
> ---
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reinette
next prev parent reply other threads:[~2026-08-18 0:51 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-29 17:27 [PATCH v10 00/17] Allow AET to use PMT as loadable module Tony Luck
2026-07-29 17:27 ` [PATCH v10 01/17] x86/resctrl: Fix enumeration of number of supported RMIDs Tony Luck
2026-08-13 23:55 ` Reinette Chatre
2026-08-14 16:28 ` Luck, Tony
2026-07-29 17:27 ` [PATCH v10 02/17] x86/resctrl: Require 64-bit x86 for resctrl support Tony Luck
2026-08-18 0:50 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 03/17] fs/resctrl: Remove redundant calls to resctrl_arch_mon_capable() Tony Luck
2026-08-18 0:50 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 04/17] x86/resctrl: Honor rdt=perf option to force enable AET perf events Tony Luck
2026-08-18 0:51 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 05/17] fs/resctrl: Add interface to disable a monitor event Tony Luck
2026-08-18 0:51 ` Reinette Chatre [this message]
2026-07-29 17:27 ` [PATCH v10 06/17] x86/resctrl: Drop global 'rdt_mon_capable' flag Tony Luck
2026-08-18 0:54 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 07/17] arm,x86,fs/resctrl: Handle change in number of RMIDs on each mount Tony Luck
2026-08-18 0:56 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 08/17] x86/resctrl: Enforce system RMID limit on AET event groups Tony Luck
2026-08-18 0:58 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 09/17] x86/resctrl: Add PMT registration API for AET enumeration callbacks Tony Luck
2026-08-18 0:59 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 10/17] platform/x86/intel/pmt: Register enumeration functions with resctrl Tony Luck
2026-07-29 17:27 ` [PATCH v10 11/17] arm,x86/resctrl: Resolve INTEL_PMT_TELEMETRY symbols at runtime Tony Luck
2026-08-18 0:59 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 12/17] x86/resctrl: Prepare to handle nested mount requests Tony Luck
2026-08-18 1:01 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 13/17] fs/resctrl: Call architecture hooks for every mount/unmount Tony Luck
2026-08-18 1:02 ` Reinette Chatre
2026-07-29 17:27 ` [PATCH v10 14/17] x86/resctrl: Export interface to report telemetry unbind/remove Tony Luck
2026-07-29 17:27 ` [PATCH v10 15/17] platform/x86/intel/pmt: Inform resctrl when MMIO maps are being removed Tony Luck
2026-07-29 17:27 ` [PATCH v10 16/17] x86/resctrl: Simplify Kconfig options for resctrl Tony Luck
2026-07-29 17:27 ` [PATCH v10 17/17] Documentation/filesystems/resctrl: Document telemetry mount timing caveat Tony Luck
2026-07-29 20:11 ` [PATCH v10 00/17] Allow AET to use PMT as loadable module Luck, Tony
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