Counts for each Intel telemetry event are periodically sent to one or
more aggregators on each package where accumulated totals are made
available in MMIO registers.
Add a new resource for monitoring these events so that CPU hotplug
notifiers will build domains at the package granularity.
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
include/linux/resctrl.h | 2 ++
fs/resctrl/internal.h | 2 ++
arch/x86/kernel/cpu/resctrl/core.c | 10 ++++++++++
fs/resctrl/rdtgroup.c | 2 ++
4 files changed, 16 insertions(+)
diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h
index 4ad3d7f10580..4ba51cb598e1 100644
--- a/include/linux/resctrl.h
+++ b/include/linux/resctrl.h
@@ -53,6 +53,7 @@ enum resctrl_res_level {
RDT_RESOURCE_L2,
RDT_RESOURCE_MBA,
RDT_RESOURCE_SMBA,
+ RDT_RESOURCE_PERF_PKG,
/* Must be the last */
RDT_NUM_RESOURCES,
@@ -250,6 +251,7 @@ enum resctrl_scope {
RESCTRL_L2_CACHE = 2,
RESCTRL_L3_CACHE = 3,
RESCTRL_L3_NODE,
+ RESCTRL_PACKAGE,
};
/**
diff --git a/fs/resctrl/internal.h b/fs/resctrl/internal.h
index d5045491790e..64c1c226d676 100644
--- a/fs/resctrl/internal.h
+++ b/fs/resctrl/internal.h
@@ -234,6 +234,8 @@ struct rdtgroup {
#define RFTYPE_DEBUG BIT(10)
+#define RFTYPE_RES_PERF_PKG BIT(11)
+
#define RFTYPE_CTRL_INFO (RFTYPE_INFO | RFTYPE_CTRL)
#define RFTYPE_MON_INFO (RFTYPE_INFO | RFTYPE_MON)
diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
index f8c9840ce7dc..ce4885c751e4 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -99,6 +99,14 @@ struct rdt_hw_resource rdt_resources_all[RDT_NUM_RESOURCES] = {
.schema_fmt = RESCTRL_SCHEMA_RANGE,
},
},
+ [RDT_RESOURCE_PERF_PKG] =
+ {
+ .r_resctrl = {
+ .name = "PERF_PKG",
+ .mon_scope = RESCTRL_PACKAGE,
+ .mon_domains = mon_domain_init(RDT_RESOURCE_PERF_PKG),
+ },
+ },
};
u32 resctrl_arch_system_num_rmid_idx(void)
@@ -430,6 +438,8 @@ static int get_domain_id_from_scope(int cpu, enum resctrl_scope scope)
return get_cpu_cacheinfo_id(cpu, scope);
case RESCTRL_L3_NODE:
return cpu_to_node(cpu);
+ case RESCTRL_PACKAGE:
+ return topology_physical_package_id(cpu);
default:
break;
}
diff --git a/fs/resctrl/rdtgroup.c b/fs/resctrl/rdtgroup.c
index bdad98ac0d27..1e1cc8001cbc 100644
--- a/fs/resctrl/rdtgroup.c
+++ b/fs/resctrl/rdtgroup.c
@@ -2193,6 +2193,8 @@ static unsigned long fflags_from_resource(struct rdt_resource *r)
case RDT_RESOURCE_MBA:
case RDT_RESOURCE_SMBA:
return RFTYPE_RES_MB;
+ case RDT_RESOURCE_PERF_PKG:
+ return RFTYPE_RES_PERF_PKG;
}
return WARN_ON_ONCE(1);
--
2.49.0