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#define STP_NETLINK_ONLY
#define STP_NUM_STRINGS 1
#include "runtime.h"
#define MAP_STRING_LENGTH 512
#define NEED_INT64_VALS
#define KEY1_TYPE STRING
#include "map-keys.c"
#include "map.c"
#include "sym.c"
#include "current.c"
#include "stack.c"
#include "probes.c"
MODULE_DESCRIPTION("SystemTap probe: scf");
MODULE_AUTHOR("Martin Hunt <hunt@redhat.com>");
MAP map1;
int inst_smp_call_function (struct kprobe *p, struct pt_regs *regs)
{
String str = _stp_string_init (0);
_stp_stack_sprint (str,regs);
_stp_map_key_str(map1, _stp_string_ptr(str));
_stp_map_add_int64 (map1, 1);
return 0;
}
static struct kprobe stp_probes[] = {
{
.addr = (kprobe_opcode_t *)"smp_call_function",
.pre_handler = inst_smp_call_function
},
};
#define MAX_STP_ROUTINE (sizeof(stp_probes)/sizeof(struct kprobe))
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;
}
map1 = _stp_map_new_str (100, INT64);
ret = _stp_register_kprobes (stp_probes, MAX_STP_ROUTINE);
return ret;
}
static void probe_exit (void)
{
_stp_unregister_kprobes (stp_probes, MAX_STP_ROUTINE);
_stp_map_print (map1, "trace[%1s] = %d\n");
_stp_map_del (map1);
}
void cleanup_module(void)
{
_stp_transport_close();
}
MODULE_LICENSE("GPL");
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