From: Tony Luck <tony.luck@intel.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Fenghua Yu <fenghuay@nvidia.com>,
Reinette Chatre <reinette.chatre@intel.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>,
x86@kernel.org, linux-kernel@vger.kernel.org,
patches@lists.linux.dev, Tony Luck <tony.luck@intel.com>
Subject: [Updates to v17 PATCH 00/03] x86,fs/resctrl telemetry monitoring
Date: Thu, 8 Jan 2026 09:42:24 -0800 [thread overview]
Message-ID: <20260108174227.11307-1-tony.luck@intel.com> (raw)
Updates to v17 series[0] to address Boris' suggestion[1] to use
DO_ONCE() instead of open-coding with atomic operations to only execute
some code once.
The substantive changes are in patch 13 where the open-coded "only once"
logic has been removed from resctrl_arch_pre_mount() and replaced using
DO_ONCE_SLEEPABLE(resctrl_arch_pre_mount); in rdt_get_tree().
This change requires some trivial changes to patches 16 and 29 so that
they apply cleanly on top of the changes to resctrl_arch_pre_mount().
I dropped Reinette's Reviewed-by tag from patch 13 because of the
changes. But she commented[2]:
"Placing DO_ONCE_SLEEPABLE() in rdt_get_tree() is fine by me"
Signed-off-by: Tony Luck <tony.luck@intel.com>
-Tony
[0] https://lore.kernel.org/all/20251217172121.12030-1-tony.luck@intel.com/
[1] https://lore.kernel.org/all/20260105191711.GBaVwON5nZn-uO6Sqg@fat_crate.local/
[2] https://lore.kernel.org/all/36239cc0-0a25-40a9-86d1-57236aa087df@intel.com/
--
2.52.0
next reply other threads:[~2026-01-08 17:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-08 17:42 Tony Luck [this message]
2026-01-08 17:42 ` [PATCH 13/32] x86,fs/resctrl: Add an architectural hook called for first mount Tony Luck
2026-01-09 15:28 ` Reinette Chatre
2026-01-09 15:37 ` Borislav Petkov
2026-01-08 17:42 ` [PATCH 16/32] x86/resctrl: Discover hardware telemetry events Tony Luck
2026-01-08 17:42 ` [PATCH 29/32] x86/resctrl: Enable RDT_RESOURCE_PERF_PKG Tony Luck
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