1#!/bin/sh 2# description: event trigger - test histogram modifiers 3 4do_reset() { 5 reset_trigger 6 echo > set_event 7 clear_trace 8} 9 10fail() { #msg 11 do_reset 12 echo $1 13 exit $FAIL 14} 15 16if [ ! -f set_event -o ! -d events/sched ]; then 17 echo "event tracing is not supported" 18 exit_unsupported 19fi 20 21if [ ! -f events/sched/sched_process_fork/trigger ]; then 22 echo "event trigger is not supported" 23 exit_unsupported 24fi 25 26if [ ! -f events/sched/sched_process_fork/hist ]; then 27 echo "hist trigger is not supported" 28 exit_unsupported 29fi 30 31reset_tracer 32do_reset 33 34echo "Test histogram with execname modifier" 35 36echo 'hist:keys=common_pid.execname' > events/sched/sched_process_fork/trigger 37for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 38COMM=`cat /proc/$$/comm` 39grep "common_pid: $COMM" events/sched/sched_process_fork/hist > /dev/null || \ 40 fail "execname modifier on sched_process_fork did not work" 41 42reset_trigger 43 44echo "Test histogram with hex modifier" 45 46echo 'hist:keys=parent_pid.hex' > events/sched/sched_process_fork/trigger 47for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 48# Note that $$ is the parent pid. $PID is current PID. 49HEX=`printf %x $PID` 50grep "parent_pid: $HEX" events/sched/sched_process_fork/hist > /dev/null || \ 51 fail "hex modifier on sched_process_fork did not work" 52 53reset_trigger 54 55echo "Test histogram with syscall modifier" 56 57echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger 58for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 59grep "id: sys_" events/raw_syscalls/sys_exit/hist > /dev/null || \ 60 fail "syscall modifier on raw_syscalls/sys_exit did not work" 61 62 63reset_trigger 64 65echo "Test histgram with log2 modifier" 66 67echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger 68for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 69grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \ 70 fail "log2 modifier on kmem/kmalloc did not work" 71 72do_reset 73 74exit 0 75