//#define STP_NETLINK_ONLY #define STP_NUM_STRINGS 1 #include "runtime.h" #include "probes.c" MODULE_DESCRIPTION("SystemTap probe: bench_io"); MODULE_AUTHOR("Martin Hunt"); static int inst_sys_read (struct kprobe *p, struct pt_regs *regs) { /* print 100 chars */ _stp_printf ("123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789\n"); _stp_print_flush(); return 0; } static int inst_sys_write (struct kprobe *p, struct pt_regs *regs) { /* print 100 chars */ _stp_print_cstr ("123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789\n"); _stp_print_flush(); return 0; } static struct kprobe kp[] = { { .addr = "sys_read", .pre_handler = inst_sys_read }, { .addr = "sys_write", .pre_handler = inst_sys_write } }; #define NUM_KPROBES (sizeof(kp)/sizeof(struct kprobe)) int probe_start(void) { return _stp_register_kprobes (kp, NUM_KPROBES); } static void probe_exit (void) { _stp_unregister_kprobes (kp, NUM_KPROBES); _stp_print_flush(); }