cache alignment

87094f22 · Nickolai Zeldovich · 404afe5b · 87094f22
--- a/ns.c
+++ b/ns.c
 #include "types.h"
 #include "defs.h"
 #include "spinlock.h"
+#include "param.h"

 // name spaces
 // XXX maybe use open hash table, no chain, better cache locality
@@ -11,7 +12,6 @@
 #define NHASH 100
 #endif

-// XXX cache align
 struct elem {
  int key;
  void *val;
@@ -21,7 +21,7 @@ struct elem {
 struct bucket {
  struct spinlock l;
  struct elem * volatile chain;
-};
+} __attribute__((aligned (CACHELINE)));

 struct ns {
  int used;