#!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test histogram modifiers # flags: instance fail() { #msg echo $1 exit_fail } if [ ! -f set_event -o ! -d events/sched ]; then echo "event tracing is not supported" exit_unsupported fi if [ ! -f events/sched/sched_process_fork/trigger ]; then echo "event trigger is not supported" exit_unsupported fi if [ ! -f events/sched/sched_process_fork/hist ]; then echo "hist trigger is not supported" exit_unsupported fi echo "Test histogram with execname modifier" echo 'hist:keys=common_pid.execname' > events/sched/sched_process_fork/trigger for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done COMM=`cat /proc/$$/comm` grep "common_pid: $COMM" events/sched/sched_process_fork/hist > /dev/null || \ fail "execname modifier on sched_process_fork did not work" reset_trigger echo "Test histogram with hex modifier" echo 'hist:keys=parent_pid.hex' > events/sched/sched_process_fork/trigger for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done # Note that $$ is the parent pid. $PID is current PID. HEX=`printf %x $PID` grep "parent_pid: $HEX" events/sched/sched_process_fork/hist > /dev/null || \ fail "hex modifier on sched_process_fork did not work" reset_trigger echo "Test histogram with syscall modifier" echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done grep "id: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \ fail "syscall modifier on raw_syscalls/sys_exit did not work" reset_trigger echo "Test histgram with log2 modifier" echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \ fail "log2 modifier on kmem/kmalloc did not work" exit 0 |