path: root/pm/power.d/sata_alpm
diff options
authorVictor Lowther <>2010-06-04 12:53:04 -0500
committerVictor Lowther <>2010-06-05 13:46:06 -0500
commit27bf3ee21864ff27b3b9de47dbf101179e1b2434 (patch)
tree2dc59e386276401606521a06daa4eb23ed355103 /pm/power.d/sata_alpm
parenta69b163aa760013e5a72327e43f8ef0f21226012 (diff)
Update help text for powersave hooks that display help.
Diffstat (limited to 'pm/power.d/sata_alpm')
1 files changed, 8 insertions, 1 deletions
diff --git a/pm/power.d/sata_alpm b/pm/power.d/sata_alpm
index e102998..82c8201 100644
--- a/pm/power.d/sata_alpm
+++ b/pm/power.d/sata_alpm
@@ -6,8 +6,15 @@ SATA_ALPM_ENABLE=${SATA_ALPM_ENABLE:-true}
help() {
cat <<EOF
-SATA link ALPM parameters:
+$0: SATA link power management
+This hook tries to save power by allowing SATA controllers to
+reduce power usage when the SATA subsystem is otherwise idle.
+This adds a little bit of latency to drive accesses in
+exchange for moderate power savings if you are not using the drive.
+This hook has 1 parameter:
SATA_ALPM_ENABLE = whether to use SATA ALPM on battery.
Defaults to "true".