[PATCH v7 02/12] x86/resctrl: Add a new resource type RDT_RESOURCE_SMBA

Babu Moger
2022-10-17T22:26:39Z

Add a new resource type RDT_RESOURCE_SMBA to handle the QoS
enforcement policies on the external slow memory.

Signed-off-by: Babu Moger <babu.moger@amd.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/kernel/cpu/resctrl/core.c | 12 ++++++++++++
arch/x86/kernel/cpu/resctrl/internal.h | 1 +
2 files changed, 13 insertions(+)

diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
index de62b0b87ced..efffce716f3a 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -106,6 +106,18 @@ struct rdt_hw_resource rdt_resources_all[] = {
.fflags = RFTYPE_RES_MB,
},
},
+ [RDT_RESOURCE_SMBA] =
+ {
+ .r_resctrl = {
+ .rid = RDT_RESOURCE_SMBA,
+ .name = "SMBA",
+ .cache_level = 3,
+ .domains = domain_init(RDT_RESOURCE_SMBA),
+ .parse_ctrlval = parse_bw,
+ .format_str = "%d=%*u",
+ .fflags = RFTYPE_RES_MB,
+ },
+ },
};

/*
diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h
index 5f7128686cfd..43d9f6f5a931 100644
--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h
@@ -419,6 +419,7 @@ enum resctrl_res_level {
RDT_RESOURCE_L3,
RDT_RESOURCE_L2,
RDT_RESOURCE_MBA,
+ RDT_RESOURCE_SMBA,

/* Must be the last */
RDT_NUM_RESOURCES,