| #!/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 -p $$ $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_cluster() |
| { |
| echo -n "Checking $1 output: per cluster " |
| if ParanoidAndNotRoot 0 |
| then |
| echo "[Skip] paranoid and not root" |
| return |
| fi |
| perf stat --per-cluster -a $2 true |
| 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 |
| } |