From: Tony Luck <tony.luck@intel.com>
To: Fenghua Yu <fenghua.yu@intel.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>
Cc: Borislav Petkov <bp@alien8.de>,
x86@kernel.org, linux-kernel@vger.kernel.org,
patches@lists.linux.dev, Tony Luck <tony.luck@intel.com>
Subject: [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6
Date: Thu, 31 Oct 2024 15:02:13 -0700 [thread overview]
Message-ID: <20241031220213.17991-1-tony.luck@intel.com> (raw)
Support Sub-NUMA cluster mode with 6 nodes per L3 cache (SNC6) on some
Intel platforms.
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
arch/x86/kernel/cpu/resctrl/monitor.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/resctrl/monitor.c b/arch/x86/kernel/cpu/resctrl/monitor.c
index 851b561850e0..5fcb3d635d91 100644
--- a/arch/x86/kernel/cpu/resctrl/monitor.c
+++ b/arch/x86/kernel/cpu/resctrl/monitor.c
@@ -1158,11 +1158,12 @@ static __init int snc_get_config(void)
ret = cpus_per_l3 / cpus_per_node;
- /* sanity check: Only valid results are 1, 2, 3, 4 */
+ /* sanity check: Only valid results are 1, 2, 3, 4, 6 */
switch (ret) {
case 1:
break;
case 2 ... 4:
+ case 6:
pr_info("Sub-NUMA Cluster mode detected with %d nodes per L3 cache\n", ret);
rdt_resources_all[RDT_RESOURCE_L3].r_resctrl.mon_scope = RESCTRL_L3_NODE;
break;
--
2.47.0
next reply other threads:[~2024-10-31 22:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-31 22:02 Tony Luck [this message]
2024-11-06 0:41 ` [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6 Reinette Chatre
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