1 files changed, 107 insertions, 0 deletions
diff --git a/runtime/probes/agg/count2.c b/runtime/probes/agg/count2.c
new file mode 100644
index 00000000..ab13f5af
--- /dev/null
+++ b/runtime/probes/agg/count2.c
@@ -0,0 +1,107 @@
+#define STP_NETLINK_ONLY
+#define STP_NUM_STRINGS 1
+#include "runtime.h"
+
+#include "counter.c"
+#include "probes.c"
+
+MODULE_DESCRIPTION("SystemTap probe: count1");
+MODULE_AUTHOR("Martin Hunt <hunt@redhat.com>");
+
+Counter opens;
+Counter reads;
+Counter writes;
+Counter read_bytes;
+Counter write_bytes;
+
+asmlinkage long inst_sys_open (const char __user * filename, int flags, int mode)
+{
+  _stp_counter_add (opens, 1);
+  jprobe_return();
+  return 0;
+}
+
+asmlinkage ssize_t inst_sys_read (unsigned int fd, char __user * buf, size_t count)
+{
+  _stp_counter_add (reads, 1);
+  _stp_counter_add (read_bytes, count);
+  jprobe_return();
+  return 0;
+}
+
+asmlinkage ssize_t inst_sys_write (unsigned int fd, const char __user * buf, size_t count)
+{
+  _stp_counter_add (writes, 1);
+  _stp_counter_add (write_bytes, count);
+  jprobe_return();
+  return 0;
+}
+
+static struct jprobe stp_probes[] = {
+  {
+    .kp.addr = (kprobe_opcode_t *)"sys_open",
+    .entry = (kprobe_opcode_t *) inst_sys_open
+  },
+  {
+    .kp.addr = (kprobe_opcode_t *)"sys_read",
+    .entry = (kprobe_opcode_t *) inst_sys_read
+  },
+  {
+    .kp.addr = (kprobe_opcode_t *)"sys_write",
+    .entry = (kprobe_opcode_t *) inst_sys_write
+  },
+};
+
+#define MAX_STP_ROUTINE (sizeof(stp_probes)/sizeof(struct jprobe))
+
+static int pid;
+module_param(pid, int, 0);
+MODULE_PARM_DESC(pid, "daemon pid");
+
+int init_module(void)
+{
+  int ret;
+  
+  if (!pid) {
+	  printk("init: Can't start without daemon pid\n");		
+	  return -1;
+  }
+
+  if (_stp_transport_open(n_subbufs, subbuf_size, pid) < 0) {
+	  printk("init: Couldn't open transport\n");		
+	  return -1;
+  }
+
+  opens = _stp_counter_init();
+  reads = _stp_counter_init();
+  writes = _stp_counter_init();
+  read_bytes = _stp_counter_init();
+  write_bytes = _stp_counter_init();
+
+  ret = _stp_register_jprobes (stp_probes, MAX_STP_ROUTINE);
+
+  return ret;
+}
+
+static void probe_exit (void)
+{
+  int i;
+
+  _stp_unregister_jprobes (stp_probes, MAX_STP_ROUTINE);
+
+  _stp_printf ("open calls: %lld\n", _stp_counter_get(opens, 0));
+  _stp_printf ("read calls: %lld\n", _stp_counter_get(reads, 0));
+  _stp_printf ("read bytes: %lld\n", _stp_counter_get(read_bytes, 0));
+  _stp_printf ("write calls: %lld\n", _stp_counter_get(writes, 0));
+  _stp_printf ("write bytes: %lld\n", _stp_counter_get(write_bytes, 0));
+  
+  _stp_print_flush();
+}
+
+void cleanup_module(void)
+{
+  _stp_transport_close();
+}
+
+MODULE_LICENSE("GPL");
+