* [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6
@ 2024-10-31 22:02 Tony Luck
2024-11-06 0:41 ` Reinette Chatre
2024-11-06 10:03 ` [tip: x86/cache] " tip-bot2 for Tony Luck
0 siblings, 2 replies; 3+ messages in thread
From: Tony Luck @ 2024-10-31 22:02 UTC (permalink / raw)
To: Fenghua Yu, Reinette Chatre, Maciej Wieczor-Retman, Peter Newman,
James Morse, Babu Moger, Drew Fustini, Dave Martin
Cc: Borislav Petkov, x86, linux-kernel, patches, Tony Luck
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6
2024-10-31 22:02 [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6 Tony Luck
@ 2024-11-06 0:41 ` Reinette Chatre
2024-11-06 10:03 ` [tip: x86/cache] " tip-bot2 for Tony Luck
1 sibling, 0 replies; 3+ messages in thread
From: Reinette Chatre @ 2024-11-06 0:41 UTC (permalink / raw)
To: Tony Luck, Fenghua Yu, Maciej Wieczor-Retman, Peter Newman,
James Morse, Babu Moger, Drew Fustini, Dave Martin
Cc: Borislav Petkov, x86, linux-kernel, patches
Hi Tony,
On 10/31/24 3:02 PM, Tony Luck wrote:
> 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>
> ---
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reinette
^ permalink raw reply [flat|nested] 3+ messages in thread
* [tip: x86/cache] x86/resctrl: Support Sub-NUMA cluster mode SNC6
2024-10-31 22:02 [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6 Tony Luck
2024-11-06 0:41 ` Reinette Chatre
@ 2024-11-06 10:03 ` tip-bot2 for Tony Luck
1 sibling, 0 replies; 3+ messages in thread
From: tip-bot2 for Tony Luck @ 2024-11-06 10:03 UTC (permalink / raw)
To: linux-tip-commits
Cc: Tony Luck, Borislav Petkov (AMD), Reinette Chatre, x86, linux-kernel
The following commit has been merged into the x86/cache branch of tip:
Commit-ID: 9bce6e94c4b39b6baa649784d92f908aa9168a45
Gitweb: https://git.kernel.org/tip/9bce6e94c4b39b6baa649784d92f908aa9168a45
Author: Tony Luck <tony.luck@intel.com>
AuthorDate: Thu, 31 Oct 2024 15:02:13 -07:00
Committer: Borislav Petkov (AMD) <bp@alien8.de>
CommitterDate: Wed, 06 Nov 2024 10:49:04 +01:00
x86/resctrl: Support Sub-NUMA cluster mode SNC6
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>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/20241031220213.17991-1-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 851b561..5fcb3d6 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;
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-11-06 10:03 UTC | newest]
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2024-10-31 22:02 [PATCH] x86/resctrl: Support Sub-NUMA cluster mode SNC6 Tony Luck
2024-11-06 0:41 ` Reinette Chatre
2024-11-06 10:03 ` [tip: x86/cache] " tip-bot2 for Tony Luck
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