1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# description: event trigger - test histogram modifiers 4# requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist 5# flags: instance 6 7fail() { #msg 8 echo $1 9 exit_fail 10} 11 12echo "Test histogram with execname modifier" 13 14echo 'hist:keys=common_pid.execname' > events/sched/sched_process_fork/trigger 15for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 16COMM=`cat /proc/$$/comm` 17grep "common_pid: $COMM" events/sched/sched_process_fork/hist > /dev/null || \ 18 fail "execname modifier on sched_process_fork did not work" 19 20reset_trigger 21 22echo "Test histogram with hex modifier" 23 24echo 'hist:keys=parent_pid.hex' > events/sched/sched_process_fork/trigger 25for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 26# Note that $$ is the parent pid. $PID is current PID. 27HEX=`printf %x $PID` 28grep "parent_pid: $HEX" events/sched/sched_process_fork/hist > /dev/null || \ 29 fail "hex modifier on sched_process_fork did not work" 30 31reset_trigger 32 33echo "Test histogram with syscall modifier" 34 35echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger 36for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 37grep "id: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \ 38 fail "syscall modifier on raw_syscalls/sys_exit did not work" 39 40 41reset_trigger 42 43echo "Test histogram with log2 modifier" 44 45echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger 46for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done 47grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \ 48 fail "log2 modifier on kmem/kmalloc did not work" 49 50exit 0 51