diff options
| -rw-r--r-- | runtime/probes/os_timer/os_timer.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/runtime/probes/os_timer/os_timer.c b/runtime/probes/os_timer/os_timer.c index 95d336b9..1e927be4 100644 --- a/runtime/probes/os_timer/os_timer.c +++ b/runtime/probes/os_timer/os_timer.c @@ -46,19 +46,19 @@ MODULE_DESCRIPTION("SystemTap probe: os_timer"); MODULE_AUTHOR("Charles Spirakis <charles.spirakis@intel.com>"); -Stat addr; +Stat timing; MAP cur_addr; /* A generic asynchorous probe entry point */ void inst_async(struct pt_regs *regs) { + u64 start; + u64 end; unsigned long ip; + rdtscll(start); ip = REG_IP(regs); - /* can we generate a histogram of ip addresses seen? */ - _stp_stat_add(addr, 1); - /* Create a map of interrupted addresses seen */ /* really want a map of image name / address */ _stp_map_key_str_int64(cur_addr, current->comm, ip); @@ -66,6 +66,9 @@ void inst_async(struct pt_regs *regs) /* Need _stp_stack() and _stp_ustack()? */ /* _stp_image() and aggregation maps */ + + rdtscll(end); + _stp_stat_add(timing, end - start); } static struct timer_list timer; @@ -93,7 +96,7 @@ static void os_timer_callback(unsigned long val) /* called when the module loads. */ int probe_start(void) { - addr = _stp_stat_init(HIST_LINEAR, 0, 1000, 100); + timing = _stp_stat_init(HIST_LINEAR, 0, 5000, 250); cur_addr = _stp_map_new_str_int64(1000, INT64); @@ -119,9 +122,10 @@ static void probe_exit (void) _stp_printf ("os timer done.\n"); _stp_printf ("WARNING: Currently using task_pt_regs() to get the pt_regs struct\n"); _stp_printf ("during the timer interrupt, but there seems to be issues with that...\n\n"); - _stp_stat_print (addr, "addr: count:%C sum:%S avg:%A min:%m max:%M\n%H", 0); + _stp_stat_print (timing, "timing (cpu cycles): # calls:%C avg:%A min:%m max:%M\n%H", 0); - _stp_map_print (cur_addr, "Process: %1s\tIp: %2P\tCount: %d"); + _stp_print("Process\tIp\tCount\n"); + _stp_map_print (cur_addr, "%1s\t%2P\t%d"); _stp_map_del(cur_addr); _stp_print_flush(); |