1 files changed, 26 insertions, 0 deletions

diff --git a/lib/pcounter.c b/lib/pcounter.c
new file mode 100644
index 000000000000..93feea598251
--- /dev/null
+++ b/lib/pcounter.c
@@ -0,0 +1,26 @@
+/*
+ * Define default pcounter functions
+ * Note that often used pcounters use dedicated functions to get a speed increase.
+ * (see DEFINE_PCOUNTER/REF_PCOUNTER_MEMBER)
+ */
+
+#include <linux/module.h>
+#include <linux/pcounter.h>
+#include <linux/smp.h>
+
+void pcounter_def_add(struct pcounter *self, int inc)
+{
+        per_cpu_ptr(self->per_cpu_values, smp_processor_id())[0] += inc;
+}
+
+EXPORT_SYMBOL_GPL(pcounter_def_add);
+
+int pcounter_def_getval(const struct pcounter *self)
+{
+        int res = 0, cpu;
+        for_each_possible_cpu(cpu)
+                res += per_cpu_ptr(self->per_cpu_values, cpu)[0];
+        return res;
+}
+
+EXPORT_SYMBOL_GPL(pcounter_def_getval);