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module/hotplug: optimize online_all

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Optimize online_all by offloading it to a shutils function which only
requres a single call to the target.
This commit is contained in:
Sergei Trofimov
2017-10-04 13:19:26 +01:00
parent d7ca39e4d1
commit f042646792
2 changed files with 18 additions and 1 deletions
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16
devlib/bin/scripts/shutils.in
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@@ -195,6 +195,19 @@ cgroups_freezer_set_state() {
exit 1
}
################################################################################
# Hotplug
################################################################################
hotplug_online_all() {
PATHS=(/sys/devices/system/cpu/cpu[0-9]*)
for path in "${PATHS[@]}"; do
if [ $(cat $path/online) -eq 0 ]; then
echo 1 > $path/online
fi
done
}
################################################################################
# Misc
################################################################################
@@ -252,6 +265,9 @@ cgroups_freezer_set_state)
ftrace_get_function_stats)
ftrace_get_function_stats
;;
hotplug_online_all)
hotplug_online_all
;;
read_tree_values)
read_tree_values $*
;;