1 files changed, 20 insertions, 5 deletions

diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h
index 3d9805297cda..70e19bc6cc9f 100644
--- a/include/linux/cacheinfo.h
+++ b/include/linux/cacheinfo.h
@@ -34,9 +34,8 @@ enum cache_type {
  * @shared_cpu_map: logical cpumask representing all the cpus sharing
  *      this cache node
  * @attributes: bitfield representing various cache attributes
- * @of_node: if devicetree is used, this represents either the cpu node in
- *      case there's no explicit cache node or the cache node itself in the
- *      device tree
+ * @fw_token: Unique value used to determine if different cacheinfo
+ *      structures represent a single hardware cache instance.
  * @disable_sysfs: indicates whether this node is visible to the user via
  *      sysfs or not
  * @priv: pointer to any private data structure specific to particular
@@ -65,8 +64,7 @@ struct cacheinfo {
 #define CACHE_ALLOCATE_POLICY_MASK      \
         (CACHE_READ_ALLOCATE | CACHE_WRITE_ALLOCATE)
 #define CACHE_ID                BIT(4)
-
-        struct device_node *of_node;
+        void *fw_token;
         bool disable_sysfs;
         void *priv;
 };
@@ -99,6 +97,23 @@ int func(unsigned int cpu)					\
 struct cpu_cacheinfo *get_cpu_cacheinfo(unsigned int cpu);
 int init_cache_level(unsigned int cpu);
 int populate_cache_leaves(unsigned int cpu);
+int cache_setup_acpi(unsigned int cpu);
+#ifndef CONFIG_ACPI_PPTT
+/*
+ * acpi_find_last_cache_level is only called on ACPI enabled
+ * platforms using the PPTT for topology. This means that if
+ * the platform supports other firmware configuration methods
+ * we need to stub out the call when ACPI is disabled.
+ * ACPI enabled platforms not using PPTT won't be making calls
+ * to this function so we need not worry about them.
+ */
+static inline int acpi_find_last_cache_level(unsigned int cpu)
+{
+        return 0;
+}
+#else
+int acpi_find_last_cache_level(unsigned int cpu);
+#endif
 
 const struct attribute_group *cache_get_priv_group(struct cacheinfo *this_leaf);