+static ssize_t node_read_numastat(struct sys_device * dev, char * buf)
+{
+ unsigned long numa_hit, numa_miss, interleave_hit, numa_foreign;
+ unsigned long local_node, other_node;
+ int i, cpu;
+ pg_data_t *pg = NODE_DATA(dev->id);
+ numa_hit = 0;
+ numa_miss = 0;
+ interleave_hit = 0;
+ numa_foreign = 0;
+ local_node = 0;
+ other_node = 0;
+ for (i = 0; i < MAX_NR_ZONES; i++) {
+ struct zone *z = &pg->node_zones[i];
+ for (cpu = 0; cpu < NR_CPUS; cpu++) {
+ struct per_cpu_pageset *ps = &z->pageset[cpu];
+ numa_hit += ps->numa_hit;
+ numa_miss += ps->numa_miss;
+ numa_foreign += ps->numa_foreign;
+ interleave_hit += ps->interleave_hit;
+ local_node += ps->local_node;
+ other_node += ps->other_node;
+ }
+ }
+ return sprintf(buf,
+ "numa_hit %lu\n"
+ "numa_miss %lu\n"
+ "numa_foreign %lu\n"
+ "interleave_hit %lu\n"
+ "local_node %lu\n"
+ "other_node %lu\n",
+ numa_hit,
+ numa_miss,
+ numa_foreign,
+ interleave_hit,
+ local_node,
+ other_node);
+}
+static SYSDEV_ATTR(numastat,S_IRUGO,node_read_numastat,NULL);