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Message-ID: <2d5a83d8-2101-4c36-ac37-be0375b0067f@amd.com>
Date: Fri, 22 Sep 2023 17:22:37 -0500
From: Mario Limonciello <mario.limonciello@....com>
To: Swapnil Sapkal <swapnil.sapkal@....com>, ray.huang@....com,
shuah@...nel.org
Cc: sukrut.bellary@...il.com, li.meng@....com, gautham.shenoy@....com,
wyes.karny@....com, Perry.Yuan@....com, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v2] selftests/amd-pstate: Fix broken paths to run
workloads in amd-pstate-ut
On 9/19/2023 05:33, Swapnil Sapkal wrote:
> In selftests/amd-pstate, tbench and gitsource microbenchmarks are used to
> compare the performance with different governors. In Current
> implementation relative path to run `amd_pstate_tracer.py`
> broken. Fixed this by using absolute paths.
> Also selftests/amd-pstate uses distro `perf` to capture stats while running
> these microbenchmarks. Distro `perf` is not working with upstream
> kernel. Fixed this by providing an option to give the perf binary path.
>
This should be multiple separate patches, at least two.
> Signed-off-by: Swapnil Sapkal <swapnil.sapkal@....com>
> ---
> .../x86/amd_pstate_tracer/amd_pstate_trace.py | 2 +-
> .../testing/selftests/amd-pstate/gitsource.sh | 14 +++++++-----
> tools/testing/selftests/amd-pstate/run.sh | 22 +++++++++++++------
> tools/testing/selftests/amd-pstate/tbench.sh | 4 ++--
> 4 files changed, 27 insertions(+), 15 deletions(-)
>
> diff --git a/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py b/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
> index 904df0ea0a1e..2448bb07973f 100755
> --- a/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
> +++ b/tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
> @@ -30,7 +30,7 @@ import getopt
> import Gnuplot
> from numpy import *
> from decimal import *
> -sys.path.append('../intel_pstate_tracer')
> +sys.path.append(os.path.join(os.path.dirname(__file__), '../intel_pstate_tracer'))
> #import intel_pstate_tracer
> import intel_pstate_tracer as ipt
>
> diff --git a/tools/testing/selftests/amd-pstate/gitsource.sh b/tools/testing/selftests/amd-pstate/gitsource.sh
> index 5f2171f0116d..c327444d3506 100755
> --- a/tools/testing/selftests/amd-pstate/gitsource.sh
> +++ b/tools/testing/selftests/amd-pstate/gitsource.sh
> @@ -66,12 +66,15 @@ post_clear_gitsource()
>
> install_gitsource()
> {
> - if [ ! -d $git_name ]; then
> + if [ ! -d $SCRIPTDIR/$git_name ]; then
> + BACKUP_DIR=$(pwd)
> + cd $SCRIPTDIR
> printf "Download gitsource, please wait a moment ...\n\n"
> wget -O $git_tar $gitsource_url > /dev/null 2>&1
>
> printf "Tar gitsource ...\n\n"
> tar -xzf $git_tar
> + cd $BACKUP_DIR
> fi
> }
>
> @@ -79,12 +82,13 @@ install_gitsource()
> run_gitsource()
> {
> echo "Launching amd pstate tracer for $1 #$2 tracer_interval: $TRACER_INTERVAL"
> - ./amd_pstate_trace.py -n tracer-gitsource-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
> + $SCRIPTDIR/../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py -n tracer-gitsource-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
>
> printf "Make and test gitsource for $1 #$2 make_cpus: $MAKE_CPUS\n"
> - cd $git_name
> - perf stat -a --per-socket -I 1000 -e power/energy-pkg/ /usr/bin/time -o ../$OUTFILE_GIT.time-gitsource-$1-$2.log make test -j$MAKE_CPUS > ../$OUTFILE_GIT-perf-$1-$2.log 2>&1
> - cd ..
> + BACKUP_DIR=$(pwd)
> + cd $SCRIPTDIR/$git_name
> + $PERF stat -a --per-socket -I 1000 -e power/energy-pkg/ /usr/bin/time -o $BACKUP_DIR/$OUTFILE_GIT.time-gitsource-$1-$2.log make test -j$MAKE_CPUS > $BACKUP_DIR/$OUTFILE_GIT-perf-$1-$2.log 2>&1
> + cd $BACKUP_DIR
>
> for job in `jobs -p`
> do
> diff --git a/tools/testing/selftests/amd-pstate/run.sh b/tools/testing/selftests/amd-pstate/run.sh
> index de4d8e9c9565..0803e70b04da 100755
> --- a/tools/testing/selftests/amd-pstate/run.sh
> +++ b/tools/testing/selftests/amd-pstate/run.sh
> @@ -8,9 +8,11 @@ else
> FILE_MAIN=DONE
> fi
>
> -source basic.sh
> -source tbench.sh
> -source gitsource.sh
> +SCRIPTDIR=`dirname "$0"`
> +
> +source $SCRIPTDIR/basic.sh
> +source $SCRIPTDIR/tbench.sh
> +source $SCRIPTDIR/gitsource.sh
>
Rather than hardcoding
$SCRIPTDIR/../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py in
multiple places, how about you delcare a new variable here?
TRACER=$SCRIPTDIR/../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py
Then all the commands can be called with $TRACER instead.
Furthermore if there needs to be flexibility for multiple calling paths
in the future (say in tree vs in filessytem) then you can easily add
another case right here that is:
if [ ! -f $TRACER ]; then
TRACER=foo/bar/baz
fi
> # amd-pstate-ut only run on x86/x86_64 AMD systems.
> ARCH=$(uname -m 2>/dev/null | sed -e 's/i.86/x86/' -e 's/x86_64/x86/')
> @@ -22,6 +24,7 @@ OUTFILE=selftest
> OUTFILE_TBENCH="$OUTFILE.tbench"
> OUTFILE_GIT="$OUTFILE.gitsource"
>
> +PERF=/usr/bin/perf
> SYSFS=
> CPUROOT=
> CPUFREQROOT=
> @@ -149,8 +152,9 @@ help()
> gitsource: Gitsource testing.>]
> [-t <tbench time limit>]
> [-p <tbench process number>]
> - [-l <loop times for tbench>]
> + [-l <loop times for tbench/gitsource>]
> [-i <amd tracer interval>]
> + [-b <perf binary>]
> [-m <comparative test: acpi-cpufreq>]
> \n"
> exit 2
> @@ -158,7 +162,7 @@ help()
>
> parse_arguments()
> {
> - while getopts ho:c:t:p:l:i:m: arg
> + while getopts ho:c:t:p:l:i:b:m: arg
> do
> case $arg in
> h) # --help
> @@ -189,6 +193,10 @@ parse_arguments()
> TRACER_INTERVAL=$OPTARG
> ;;
>
> + b) # --perf-binary
> + PERF=`realpath $OPTARG`
> + ;;
> +
> m) # --comparative-test
> COMPARATIVE_TEST=$OPTARG
> ;;
> @@ -202,8 +210,8 @@ parse_arguments()
>
> command_perf()
> {
> - if ! command -v perf > /dev/null; then
> - echo $msg please install perf. >&2
> + if ! $PERF -v; then
> + echo $msg please install perf or provide perf binary path as argument >&2
> exit $ksft_skip
> fi
> }
> diff --git a/tools/testing/selftests/amd-pstate/tbench.sh b/tools/testing/selftests/amd-pstate/tbench.sh
> index 49c9850341f6..70e5863e74ea 100755
> --- a/tools/testing/selftests/amd-pstate/tbench.sh
> +++ b/tools/testing/selftests/amd-pstate/tbench.sh
> @@ -64,11 +64,11 @@ post_clear_tbench()
> run_tbench()
> {
> echo "Launching amd pstate tracer for $1 #$2 tracer_interval: $TRACER_INTERVAL"
> - ./amd_pstate_trace.py -n tracer-tbench-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
> + $SCRIPTDIR/../../../power/x86/amd_pstate_tracer/amd_pstate_trace.py -n tracer-tbench-$1-$2 -i $TRACER_INTERVAL > /dev/null 2>&1 &
>
> printf "Test tbench for $1 #$2 time_limit: $TIME_LIMIT procs_num: $PROCESS_NUM\n"
> tbench_srv > /dev/null 2>&1 &
> - perf stat -a --per-socket -I 1000 -e power/energy-pkg/ tbench -t $TIME_LIMIT $PROCESS_NUM > $OUTFILE_TBENCH-perf-$1-$2.log 2>&1
> + $PERF stat -a --per-socket -I 1000 -e power/energy-pkg/ tbench -t $TIME_LIMIT $PROCESS_NUM > $OUTFILE_TBENCH-perf-$1-$2.log 2>&1
>
> pid=`pidof tbench_srv`
> kill $pid
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