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>
Cc: <x86@kernel.org>, <linux-kernel@vger.kernel.org>,
<patches@lists.linux.dev>
Subject: Re: [PATCH v12 16/31] x86,fs/resctrl: Add architectural event pointer
Date: Wed, 22 Oct 2025 21:34:27 -0700 [thread overview]
Message-ID: <090a9b56-c714-4a5f-bf33-41f47e29bb4d@intel.com> (raw)
In-Reply-To: <20251013223348.103390-17-tony.luck@intel.com>
Hi Tony,
On 10/13/25 3:33 PM, Tony Luck wrote:
> The resctrl file system layer passes the domain, RMID, and event id to the
> architecture to fetch an event counter.
>
> Fetching a telemetry event counter requires additional information that is
> private to the architecture, for example, the offset into MMIO space from
> where the counter should be read.
>
> Add mon_evt::arch_priv that architecture can use for any private data
> related to the event. resctrl filesystem initializes mon_evt::arch_priv
> when the architecture enables the event and passes it back to architecture
> when needing to fetch an event counter.
>
> Suggested-by: Reinette Chatre <reinette.chatre@intel.com>
> Signed-off-by: Tony Luck <tony.luck@intel.com>
> ---
This will need to be rebased, but that should be straight forward.
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reinette
next prev parent reply other threads:[~2025-10-23 4:34 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-13 22:33 [PATCH v12 00/31] x86,fs/resctrl telemetry monitoring Tony Luck
2025-10-13 22:33 ` [PATCH v12 01/31] x86,fs/resctrl: Improve domain type checking Tony Luck
2025-10-23 4:07 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 02/31] x86/resctrl: Move L3 initialization into new helper function Tony Luck
2025-10-13 22:33 ` [PATCH v12 03/31] x86/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Tony Luck
2025-10-23 4:08 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 04/31] x86/resctrl: Clean up domain_remove_cpu_ctrl() Tony Luck
2025-10-13 22:33 ` [PATCH v12 05/31] x86,fs/resctrl: Refactor domain create/remove using struct rdt_domain_hdr Tony Luck
2025-10-23 4:15 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 06/31] x86,fs/resctrl: Use struct rdt_domain_hdr when reading counters Tony Luck
2025-10-23 4:17 ` Reinette Chatre
2025-10-23 20:27 ` Luck, Tony
2025-10-13 22:33 ` [PATCH v12 07/31] x86,fs/resctrl: Rename struct rdt_mon_domain and rdt_hw_mon_domain Tony Luck
2025-10-23 4:18 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 08/31] x86,fs/resctrl: Rename some L3 specific functions Tony Luck
2025-10-23 4:21 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 09/31] fs/resctrl: Make event details accessible to functions when reading events Tony Luck
2025-10-13 22:33 ` [PATCH v12 10/31] x86,fs/resctrl: Handle events that can be read from any CPU Tony Luck
2025-10-23 4:22 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 11/31] x86,fs/resctrl: Support binary fixed point event counters Tony Luck
2025-10-13 22:33 ` [PATCH v12 12/31] x86,fs/resctrl: Add an architectural hook called for each mount Tony Luck
2025-10-13 22:33 ` [PATCH v12 13/31] x86,fs/resctrl: Add and initialize rdt_resource for package scope monitor Tony Luck
2025-10-23 4:33 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 14/31] x86/resctrl: Discover hardware telemetry events Tony Luck
2025-10-23 4:28 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 15/31] x86,fs/resctrl: Fill in details of events for guid 0x26696143 and 0x26557651 Tony Luck
2025-10-23 4:28 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 16/31] x86,fs/resctrl: Add architectural event pointer Tony Luck
2025-10-23 4:34 ` Reinette Chatre [this message]
2025-10-13 22:33 ` [PATCH v12 17/31] x86/resctrl: Find and enable usable telemetry events Tony Luck
2025-10-23 4:35 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 18/31] fs/resctrl: Split L3 dependent parts out of __mon_event_count() Tony Luck
2025-10-23 4:37 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 19/31] x86/resctrl: Read telemetry events Tony Luck
2025-10-23 4:47 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 20/31] fs/resctrl: Refactor mkdir_mondata_subdir() Tony Luck
2025-10-23 17:45 ` Reinette Chatre
2025-10-27 23:00 ` Luck, Tony
2025-10-28 16:00 ` Reinette Chatre
2025-10-28 17:14 ` Luck, Tony
2025-10-28 17:40 ` Reinette Chatre
2025-10-28 18:40 ` Luck, Tony
2025-10-28 23:55 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 21/31] fs/resctrl: Refactor rmdir_mondata_subdir_allrdtgrp() Tony Luck
2025-10-23 17:45 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 22/31] x86,fs/resctrl: Handle domain creation/deletion for RDT_RESOURCE_PERF_PKG Tony Luck
2025-10-23 17:46 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 23/31] x86/resctrl: Add energy/perf choices to rdt boot option Tony Luck
2025-10-23 17:45 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 24/31] x86/resctrl: Handle number of RMIDs supported by RDT_RESOURCE_PERF_PKG Tony Luck
2025-10-23 17:48 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 25/31] fs/resctrl: Move allocation/free of closid_num_dirty_rmid[] Tony Luck
2025-10-23 17:49 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 26/31] x86,fs/resctrl: Compute number of RMIDs as minimum across resources Tony Luck
2025-10-13 22:33 ` [PATCH v12 27/31] fs/resctrl: Move RMID initialization to first mount Tony Luck
2025-10-23 17:49 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 28/31] x86/resctrl: Enable RDT_RESOURCE_PERF_PKG Tony Luck
2025-10-23 17:50 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 29/31] fs/resctrl: Provide interface to create architecture specific debugfs area Tony Luck
2025-10-23 17:50 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 30/31] x86/resctrl: Add debugfs files to show telemetry aggregator status Tony Luck
2025-10-23 17:50 ` Reinette Chatre
2025-10-13 22:33 ` [PATCH v12 31/31] x86,fs/resctrl: Update documentation for telemetry events Tony Luck
2025-10-23 17:52 ` Reinette Chatre
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