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authorPaul E. McKenney <paulmck@kernel.org>2020-12-25 02:28:14 +0300
committerPaul E. McKenney <paulmck@kernel.org>2021-01-05 22:33:20 +0300
commit1120281713a5c8d9caffaa49db11fd0a25e34ef0 (patch)
treed12621810dfc1d905f6aa4b8a3ac1e0961263c0f /tools/testing/selftests/rcutorture
parentb79b0b67791316e6ca0502bd0f2ecd7018d6d9e8 (diff)
downloadlinux-1120281713a5c8d9caffaa49db11fd0a25e34ef0.tar.xz
torture: Do Kconfig analysis only once per scenario
Currently, if a scenario is repeated as in "--configs '4*TREE01'", the Kconfig analysis is performed for each occurrance (four times in this example) and each analysis places the exact same data into the exact same files. This is not really an issue in this repetition-four example, but it can needlessly consume tens of seconds of wallclock time for something like "--config '128*TINY01'". This commit therefore does Kconfig analysis only once per set of repeats of a given scenario, courtesy of the "sort -u" command and an automatically generated awk script. While in the area, this commit also wordsmiths a comment. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/testing/selftests/rcutorture')
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm.sh22
1 files changed, 15 insertions, 7 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 605186888fd9..8d3c99b35e06 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -286,7 +286,8 @@ then
exit 1
fi
fi
-for CF1 in $configs_derep
+echo 'BEGIN {' > $T/cfgcpu.awk
+for CF1 in `echo $configs_derep | tr -s ' ' '\012' | sort -u`
do
if test -f "$CONFIGFRAG/$CF1"
then
@@ -299,12 +300,20 @@ do
fi
cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
cpu_count=`configfrag_boot_maxcpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
- echo $CF1 $cpu_count >> $T/cfgcpu
+ echo 'scenariocpu["'"$CF1"'"] = '"$cpu_count"';' >> $T/cfgcpu.awk
else
echo "The --configs file $CF1 does not exist, terminating."
exit 1
fi
done
+cat << '___EOF___' >> $T/cfgcpu.awk
+}
+{
+ for (i = 1; i <= NF; i++)
+ print $i, scenariocpu[$i];
+}
+___EOF___
+echo $configs_derep | awk -f $T/cfgcpu.awk > $T/cfgcpu
sort -k2nr $T/cfgcpu -T="$T" > $T/cfgcpu.sort
# Use a greedy bin-packing algorithm, sorting the list accordingly.
@@ -324,11 +333,10 @@ END {
batch = 0;
nc = -1;
- # Each pass through the following loop creates on test batch
- # that can be executed concurrently given ncpus. Note that a
- # given test that requires more than the available CPUs will run in
- # their own batch. Such tests just have to make do with what
- # is available.
+ # Each pass through the following loop creates on test batch that
+ # can be executed concurrently given ncpus. Note that a given test
+ # that requires more than the available CPUs will run in its own
+ # batch. Such tests just have to make do with what is available.
while (nc != ncpus) {
batch++;
nc = ncpus;