Some Intel features require setting a package scoped model specific register.

Add a new resource that builds domains for each package.

Signed-off-by: Tony Luck <tony.luck@intel.com>
---
 include/linux/resctrl.h                |  1 +
 arch/x86/kernel/cpu/resctrl/internal.h |  6 ++++++
 arch/x86/kernel/cpu/resctrl/core.c     | 23
+++++++++++++++++++----
 3 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h index

25051daa6655..f504f6263fec 100644

--- a/include/linux/resctrl.h
+++ b/include/linux/resctrl.h

@@ -167,6 +167,7 @@ struct rdt_resource {
 	int			rid;
 	bool			alloc_capable;
 	bool			mon_capable;
+	bool			pkg_actions;
 	int			num_rmid;
 	int			scope;
 	struct resctrl_cache	cache;

diff --git a/arch/x86/kernel/cpu/resctrl/internal.h

b/arch/x86/kernel/cpu/resctrl/internal.h
index 38bac0062c82..e51a5004be77 100644

--- a/arch/x86/kernel/cpu/resctrl/internal.h
+++ b/arch/x86/kernel/cpu/resctrl/internal.h

@@ -438,6 +438,7 @@ enum resctrl_res_level {
 	RDT_RESOURCE_MBA,
 	RDT_RESOURCE_SMBA,
 	RDT_RESOURCE_NODE,
+	RDT_RESOURCE_PKG,

 	/* Must be the last */
 	RDT_NUM_RESOURCES,

@@ -447,6 +448,7 @@ enum resctrl_scope {
 	SCOPE_L2_CACHE = 2,
 	SCOPE_L3_CACHE = 3,
 	SCOPE_NODE,
+	SCOPE_PKG,
 };

 static inline int get_mbm_res_level(void) @@ -482,6 +484,10 @@ int

resctrl_arch_set_cdp_enabled(enum resctrl_res_level l, bool enable);
 	for_each_rdt_resource(r)					      \
 		if (r->alloc_capable || r->mon_capable)

+#define for_each_domain_needed_rdt_resource(r)
	      \
+	for_each_rdt_resource(r)					      \
+		if (r->alloc_capable || r->mon_capable || r->pkg_actions)
+
 #define for_each_alloc_capable_rdt_resource(r)
\
 	for_each_rdt_resource(r)					      \
 		if (r->alloc_capable)

diff --git a/arch/x86/kernel/cpu/resctrl/core.c

b/arch/x86/kernel/cpu/resctrl/core.c
index 6fe9f87d4403..af3be3c2db96 100644

--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c

@@ -127,6 +127,16 @@ struct rdt_hw_resource rdt_resources_all[] = {
 			.fflags			= 0,
 		},
 	},
+	[RDT_RESOURCE_PKG] =
+	{
+		.r_resctrl = {
+			.rid			= RDT_RESOURCE_PKG,
+			.name			= "PKG",
+			.scope			= SCOPE_PKG,
+			.domains		=

domain_init(RDT_RESOURCE_PKG),
+			.fflags			= 0,
+		},
+	},
 };

 /*

@@ -504,9 +514,14 @@ static int arch_domain_mbm_alloc(u32 num_rmid,

struct rdt_hw_domain *hw_dom)

 static int get_domain_id(int cpu, enum resctrl_scope scope)  {
-	if (scope == SCOPE_NODE)
+	switch (scope) {
+	case SCOPE_NODE:
 		return cpu_to_node(cpu);
-	return get_cpu_cacheinfo_id(cpu, scope);
+	case SCOPE_PKG:
+		return topology_physical_package_id(cpu);
+	default:
+		return get_cpu_cacheinfo_id(cpu, scope);
+	}
 }

 /*

@@ -630,7 +645,7 @@ static int resctrl_online_cpu(unsigned int cpu)
 	struct rdt_resource *r;

 	mutex_lock(&rdtgroup_mutex);
-	for_each_capable_rdt_resource(r)
+	for_each_domain_needed_rdt_resource(r)
 		domain_add_cpu(cpu, r);
 	/* The cpu is set in default rdtgroup after online. */
 	cpumask_set_cpu(cpu, &rdtgroup_default.cpu_mask); @@ -657,7
+672,7 @@ static int resctrl_offline_cpu(unsigned int cpu)
 	struct rdt_resource *r;

 	mutex_lock(&rdtgroup_mutex);
-	for_each_capable_rdt_resource(r)
+	for_each_domain_needed_rdt_resource(r)