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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2014-06-30 15:04:33 +0530 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2014-07-02 15:33:04 +0530 |
| commit | 11c9bb5a3b60a7bcac7b82f0b2b8ed924d98187b (patch) | |
| tree | a27c0d93e3fb669ed069398c0201228b406f29fd | |
| parent | 2ea43f8fef6b8416a7b680f08c15c0ef6269c8f2 (diff) | |
is-cpu-isolated: Split out separate routine for cpufreq stuff
Change-Id: Iefcaf437dd59e8b9d314b4a168db589f877fa47e
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
| -rwxr-xr-x | common/scripts/is-cpu-isolated.sh | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/common/scripts/is-cpu-isolated.sh b/common/scripts/is-cpu-isolated.sh index 7984fb5..e713571 100755 --- a/common/scripts/is-cpu-isolated.sh +++ b/common/scripts/is-cpu-isolated.sh @@ -95,6 +95,22 @@ update_non_isol_cpus() { isdebug echo "" } +# Get rid of cpufreq-timer activities, pass CPU number in $1 +cpufreq_fix_governor() { + # Remove governor's background timers, i.e. use performance governor + if [ -d /sys/devices/system/cpu/cpu$1/cpufreq ]; then + echo performance > /sys/devices/system/cpu/cpu$1/cpufreq/scaling_governor + fi +} + +# Calls routine $1 for each Isolated CPU with parameter CPU-number +for_each_isol_cpu() { + for i in `echo $ISOL_CPU | sed 's/,/ /g'`; do + $1 $i + done +} + + # routine to isolate a CPU isolate_cpu() { isdebug echo "" @@ -111,10 +127,8 @@ isolate_cpu() { exit 1 fi - # Remove governor's background timers, i.e. use performance governor - if [ -d /sys/devices/system/cpu/cpu$ISOL_CPU/cpufreq ]; then - echo performance > /sys/devices/system/cpu/cpu$ISOL_CPU/cpufreq/scaling_governor - fi + # Call cpufreq_fix_governor for each isolated CPU + for_each_isol_cpu cpufreq_fix_governor # Affine all irqs to CPU0 for i in `find /proc/irq/* -name smp_affinity`; do |