@@ -143,6 +143,7 @@ int topology_update_die_map(unsigned int dieid, unsigned int cpu);
int topology_phys_to_logical_pkg(unsigned int pkg);
int topology_phys_to_logical_die(unsigned int die, unsigned int cpu);
bool topology_is_primary_thread(unsigned int cpu);
+bool topology_smt_threads_supported(unsigned int threads);
#else
#define topology_max_packages() (1)
static inline int
@@ -155,6 +156,7 @@ static inline int topology_phys_to_logical_die(unsigned int die,
static inline int topology_max_die_per_package(void) { return 1; }
static inline int topology_max_smt_threads(void) { return 1; }
static inline bool topology_is_primary_thread(unsigned int cpu) { return true; }
+static inline bool topology_smt_threads_supported(unsigned int threads) { return false; }
#endif
static inline void arch_fix_phys_package_id(int num, u32 slot)
@@ -278,6 +278,18 @@ bool topology_is_primary_thread(unsigned int cpu)
return apic_id_is_primary_thread(per_cpu(x86_cpu_to_apicid, cpu));
}
+/**
+ * topology_smt_threads_supported - Check if the given number of SMT threads
+ * is supported.
+ *
+ * @threads: The number of SMT threads.
+ */
+bool topology_smt_threads_supported(unsigned int threads)
+{
+ // Only support a single thread or all threads.
+ return threads == 1 || threads == smp_num_siblings;
+}
+
/**
* topology_phys_to_logical_pkg - Map a physical package id to a logical
*