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| author |   Paul E. McKenney <paulmck@linux.ibm.com> | 2019-05-11 17:59:52 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2019-05-28 09:06:09 -0700 |
| commit | 7225c0777271bb489ad6fb095aa10985ad138a81 (patch) | |
| tree | 6f499bfc8972c43b1d90e218b8f239bdbc636432 /tools/testing/selftests/rcutorture/bin/cpus2use.sh | |
| parent | torture: Run kernel build in source directory (diff) | |
| download | linux-dev-7225c0777271bb489ad6fb095aa10985ad138a81.tar.xz linux-dev-7225c0777271bb489ad6fb095aa10985ad138a81.zip | |
torture: Make --cpus override idleness calculations
Currently, rcutorture will use relatively few CPUs to build the kernel
on a busy system, which is often as it should be. However, if the user
has used the --cpus argument to dedicate a specified number of CPUs to
this torture test, it would be good if the kernel build also made use
of them. This commit therefore changes the cpus2use.sh script to use
--cpus when specified and to do the idleness calculations otherwise.
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'tools/testing/selftests/rcutorture/bin/cpus2use.sh')
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/cpus2use.sh | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/cpus2use.sh b/tools/testing/selftests/rcutorture/bin/cpus2use.sh index ff7102212703..4e9485590c10 100755 --- a/tools/testing/selftests/rcutorture/bin/cpus2use.sh +++ b/tools/testing/selftests/rcutorture/bin/cpus2use.sh @@ -9,6 +9,11 @@ # # Authors: Paul E. McKenney <paulmck@linux.ibm.com> +if test -n "$TORTURE_ALLOTED_CPUS" +then + echo $TORTURE_ALLOTED_CPUS + exit 0 +fi ncpus=`grep '^processor' /proc/cpuinfo | wc -l` idlecpus=`mpstat | tail -1 | \ awk -v ncpus=$ncpus '{ print ncpus * ($7 + $NF) / 100 }'` |