1 files changed, 62 insertions, 0 deletions
diff --git a/runtime/probes/bench/bench.c b/runtime/probes/bench/bench.c
new file mode 100644
index 00000000..9192d3f2
--- /dev/null
+++ b/runtime/probes/bench/bench.c
@@ -0,0 +1,62 @@
+#define STP_NETLINK_ONLY
+#define STP_NUM_STRINGS 1
+
+#include "runtime.h"
+#include "probes.c"
+
+MODULE_DESCRIPTION("SystemTap probe: bench");
+MODULE_AUTHOR("Martin Hunt");
+
+asmlinkage ssize_t inst_sys_write (unsigned int fd, const char __user * buf, size_t count)
+{
+  jprobe_return();
+  return 0;
+}
+
+static int inst_sys_read (struct kprobe *p, struct pt_regs *regs)
+{
+  return 0;
+}
+
+static struct jprobe jp[] = {
+  {
+    .kp.addr = (kprobe_opcode_t *)"sys_write",
+    .entry = (kprobe_opcode_t *) inst_sys_write
+  },
+};
+
+static struct kprobe kp[] = {
+  {
+    .addr = "sys_read",
+    .pre_handler = inst_sys_read
+  }
+};
+
+#define NUM_JPROBES (sizeof(jp)/sizeof(struct jprobe))
+#define NUM_KPROBES (sizeof(kp)/sizeof(struct kprobe))
+
+int init_module(void)
+{
+  int ret;
+
+  TRANSPORT_OPEN;
+  
+  ret = _stp_register_jprobes (jp, NUM_JPROBES);
+  if (ret >= 0)
+    ret = _stp_register_kprobes (kp, NUM_KPROBES);
+  
+  return ret;
+}
+
+static void probe_exit (void)
+{
+  _stp_unregister_jprobes (jp, NUM_JPROBES); 
+  _stp_unregister_kprobes (kp, NUM_KPROBES); 
+}
+
+void cleanup_module(void)
+{
+  _stp_transport_close();
+}
+
+MODULE_LICENSE("GPL");