xnu-4570.71.2.tar.gz

[apple/xnu.git] / osfmk / i386 / cpu_topology.c

diff --git a/osfmk/i386/cpu_topology.c b/osfmk/i386/cpu_topology.c
index e079e6e38ff011912ec22a44908b28eabd777367..a4a460893cd2ad153ff3a0781d77bc0a9aeb95b2 100644 (file)
--- a/osfmk/i386/cpu_topology.c
+++ b/osfmk/i386/cpu_topology.c
@@ -37,6 +37,7 @@
 #include <i386/cpu_data.h>
 #include <i386/lapic.h>
 #include <i386/machine_routines.h>
+#include <stddef.h>
 
 __private_extern__ void qsort(
     void * array,
@@ -64,15 +65,14 @@ static void cpu_shadow_sort(int ncpus) {
 }
 
 /*
- * cpu_topology_sort() is called after all processors have been registered
- * but before any non-boot processor id started.
- * We establish canonical logical processor numbering - logical cpus must be
- * contiguous, zero-based and assigned in physical (local apic id) order.
- * This step is required because the discovery/registration order is
- * non-deterministic - cores are registered in differing orders over boots.
- * Enforcing canonical numbering simplifies identification
- * of processors - in particular, for stopping/starting from CHUD.
- */ 
+ * cpu_topology_sort() is called after all processors have been registered but
+ * before any non-boot processor id started.  We establish canonical logical
+ * processor numbering - logical cpus must be contiguous, zero-based and
+ * assigned in physical (local apic id) order.  This step is required because
+ * the discovery/registration order is non-deterministic - cores are registered
+ * in differing orders over boots.  Enforcing canonical numbering simplifies
+ * identification of processors.
+ */
 void
 cpu_topology_sort(int ncpus)
 {