diff options
Diffstat (limited to 'runtime/probes/test4/dtr.c')
| -rw-r--r-- | runtime/probes/test4/dtr.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/runtime/probes/test4/dtr.c b/runtime/probes/test4/dtr.c deleted file mode 100644 index 09b0f52d..00000000 --- a/runtime/probes/test4/dtr.c +++ /dev/null @@ -1,169 +0,0 @@ -#define HASH_TABLE_BITS 8 -#define HASH_TABLE_SIZE (1<<HASH_TABLE_BITS) -#define BUCKETS 16 /* largest histogram width */ - -#define STP_NETLINK_ONLY -#define STP_NUM_STRINGS 1 - -#include <linux/module.h> -#include <linux/interrupt.h> -#include <net/sock.h> -#include <linux/netlink.h> - -#include "runtime.h" -#include "map.c" -#include "probes.c" -#include "stack.c" - -MODULE_DESCRIPTION("SystemTap probe: test4"); -MODULE_AUTHOR("Martin Hunt <hunt@redhat.com>"); - - -MAP opens, reads, writes, traces; - -asmlinkage long inst_sys_open (const char __user * filename, int flags, int mode) -{ - _stp_map_key_str (opens, current->comm); - _stp_map_add_int64 (opens, 1); - jprobe_return(); - return 0; -} - -asmlinkage ssize_t inst_sys_read (unsigned int fd, char __user * buf, size_t count) -{ - _stp_map_key_str (reads, current->comm); - _stp_map_stat_add (reads, count); - jprobe_return(); - return 0; -} - -asmlinkage ssize_t inst_sys_write (unsigned int fd, const char __user * buf, size_t count) -{ - _stp_map_key_str (writes, current->comm); - _stp_map_stat_add (writes, count); - jprobe_return(); - return 0; -} - -int inst_show_cpuinfo(struct seq_file *m, void *v) -{ - String str = _stp_string_init (0); - _stp_stack_print (0,0); - _stp_stack_print (1,0); - _stp_list_add (traces, _stp_stack_sprint(str, 0, 0)); - - jprobe_return(); - return 0; -} - - -static struct jprobe dtr_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 - }, - { - .kp.addr = (kprobe_opcode_t *)"show_cpuinfo", - .entry = (kprobe_opcode_t *) inst_show_cpuinfo, - }, -}; - -#define MAX_DTR_ROUTINE (sizeof(dtr_probes)/sizeof(struct jprobe)) - -static unsigned n_subbufs = 4; -module_param(n_subbufs, uint, 0); -MODULE_PARM_DESC(n_subbufs, "number of sub-buffers per per-cpu buffer"); - -static unsigned subbuf_size = 65536; -module_param(subbuf_size, uint, 0); -MODULE_PARM_DESC(subbuf_size, "size of each per-cpu sub-buffers"); - -static int pid; -module_param(pid, int, 0); -MODULE_PARM_DESC(pid, "daemon pid"); - -static int init_dtr(void) -{ - int ret; - - if (!pid) { - printk("init_dtr: Can't start without daemon pid\n"); - return -1; - } - - if (_stp_transport_open(n_subbufs, subbuf_size, pid) < 0) { - printk("init_dtr: Couldn't open transport\n"); - return -1; - } - - opens = _stp_map_new (1000, INT64); - reads = _stp_map_new (1000, STAT); - writes = _stp_map_new (1000, STAT); - traces = _stp_list_new (1000, STRING); - - ret = _stp_register_jprobes (dtr_probes, MAX_DTR_ROUTINE); - - _stp_log("instrumentation is enabled...\n"); - return ret; -} - -static int exited; /* FIXME: this is a stopgap - if we don't do this - * and are manually removed, bad things happen */ - -static void probe_exit (void) -{ - struct map_node_stat *st; - struct map_node_int64 *ptr; - struct map_node_str *sptr; - - exited = 1; - - _stp_unregister_jprobes (dtr_probes, MAX_DTR_ROUTINE); - - foreach (traces, sptr) { - _stp_printf ("trace: %s\n", sptr->str); - _stp_print_flush (); - } - - foreach (opens, ptr) { - _stp_printf ("opens[%s] = %lld\n", key1str(ptr), ptr->val); - _stp_print_flush (); - } - - foreach (reads, st) { - _stp_printf ("reads[%s] = [count=%lld sum=%lld min=%lld max=%lld]\n", key1str(st), - st->stats.count, st->stats.sum, st->stats.min, st->stats.max); - _stp_print_flush (); - } - - foreach (writes, st) { - _stp_printf ("writes[%s] = [count=%lld sum=%lld min=%lld max=%lld]\n", key1str(st), - st->stats.count, st->stats.sum, st->stats.min, st->stats.max); - _stp_print_flush(); - } - - _stp_map_del (opens); - _stp_map_del (reads); - _stp_map_del (writes); -} - -static void cleanup_dtr(void) -{ - if (!exited) - probe_exit(); - - _stp_transport_close(); -} - -module_init(init_dtr); -module_exit(cleanup_dtr); -MODULE_LICENSE("GPL"); - |