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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Return true if perf_event_paranoid is > $1 and not running as root.
function ParanoidAndNotRoot()
{
[ "$(id -u)" != 0 ] && [ "$(cat /proc/sys/kernel/perf_event_paranoid)" -gt $1 ]
}
# $1 name $2 extra_opt
check_no_args()
{
echo -n "Checking $1 output: no args "
perf stat $2 true
commachecker --no-args
echo "[Success]"
}
check_system_wide()
{
echo -n "Checking $1 output: system wide "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat -a $2 true
commachecker --system-wide
echo "[Success]"
}
check_system_wide_no_aggr()
{
echo -n "Checking $1 output: system wide no aggregation "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat -A -a --no-merge $2 true
commachecker --system-wide-no-aggr
echo "[Success]"
}
check_interval()
{
echo -n "Checking $1 output: interval "
perf stat -I 1000 $2 true
commachecker --interval
echo "[Success]"
}
check_event()
{
echo -n "Checking $1 output: event "
perf stat -e cpu-clock $2 true
commachecker --event
echo "[Success]"
}
check_per_core()
{
echo -n "Checking $1 output: per core "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat --per-core -a $2 true
commachecker --per-core
echo "[Success]"
}
check_per_thread()
{
echo -n "Checking $1 output: per thread "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat --per-thread -a $2 true
commachecker --per-thread
echo "[Success]"
}
check_per_cache_instance()
{
echo -n "Checking $1 output: per cache instance "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat --per-cache -a $2 true
commachecker --per-cache
echo "[Success]"
}
check_per_die()
{
echo -n "Checking $1 output: per die "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat --per-die -a $2 true
commachecker --per-die
echo "[Success]"
}
check_per_node()
{
echo -n "Checking $1 output: per node "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat --per-node -a $2 true
commachecker --per-node
echo "[Success]"
}
check_per_socket()
{
echo -n "Checking $1 output: per socket "
if ParanoidAndNotRoot 0
then
echo "[Skip] paranoid and not root"
return
fi
perf stat --per-socket -a $2 true
commachecker --per-socket
echo "[Success]"
}
# The perf stat options for per-socket, per-core, per-die
# and -A ( no_aggr mode ) uses the info fetched from this
# directory: "/sys/devices/system/cpu/cpu*/topology". For
# example, socket value is fetched from "physical_package_id"
# file in topology directory.
# Reference: cpu__get_topology_int in util/cpumap.c
# If the platform doesn't expose topology information, values
# will be set to -1. For example, incase of pSeries platform
# of powerpc, value for "physical_package_id" is restricted
# and set to -1. Check here validates the socket-id read from
# topology file before proceeding further
FILE_LOC="/sys/devices/system/cpu/cpu*/topology/"
FILE_NAME="physical_package_id"
function check_for_topology()
{
if ! ParanoidAndNotRoot 0
then
socket_file=`ls $FILE_LOC/$FILE_NAME | head -n 1`
[ -z $socket_file ] && {
echo 0
return
}
socket_id=`cat $socket_file`
[ $socket_id == -1 ] && {
echo 1
return
}
fi
echo 0
}
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