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: /lib/modules/5.11.0-1022-aws/build/tools/testing/selftests/rcutorture/bin/ [ drwxr-xr-x ]
name : cpus2use.sh #!/bin/bash # SPDX-License-Identifier: GPL-2.0+ # # Get an estimate of how CPU-hoggy to be. # # Usage: cpus2use.sh # # Copyright (C) IBM Corporation, 2013 # # Authors: Paul E. McKenney <paulmck@linux.ibm.com> if test -n "$TORTURE_ALLOTED_CPUS" then echo $TORTURE_ALLOTED_CPUS exit 0 fi ncpus=`grep '^processor' /proc/cpuinfo | wc -l` if mpstat -V > /dev/null 2>&1 then idlecpus=`mpstat | tail -1 | \ awk -v ncpus=$ncpus '{ print ncpus * ($7 + $NF) / 100 }'` else # No mpstat command, so use all available CPUs. echo The mpstat command is not available, so greedily using all CPUs. idlecpus=$ncpus fi awk -v ncpus=$ncpus -v idlecpus=$idlecpus < /dev/null ' BEGIN { cpus2use = idlecpus; if (cpus2use < 1) cpus2use = 1; if (cpus2use < ncpus / 10) cpus2use = ncpus / 10; if (cpus2use == int(cpus2use)) cpus2use = int(cpus2use) else cpus2use = int(cpus2use) + 1 print cpus2use; }'