ACPI : Create "idle=nomwait" bootparam

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 312fe77764a48cba9fb04e000fc2dffeba7fa978..5e497d16fb51a036e7b80af6b6151ddbe89603c9 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -818,7 +818,7 @@ and is between 256 and 4096 characters. It is defined in the file
                        See Documentation/ide/ide.txt.
 
        idle=           [X86]
-                       Format: idle=poll or idle=mwait
+                       Format: idle=poll or idle=mwait, idle=halt, idle=nomwait
                        Poll forces a polling idle loop that can slightly improves the performance
                        of waking up a idle CPU, but will use a lot of power and make the system
                        run hot. Not recommended.
@@ -826,6 +826,9 @@ and is between 256 and 4096 characters. It is defined in the file
                        to not use it because it doesn't save as much power as a normal idle
                        loop use the MONITOR/MWAIT idle loop anyways. Performance should be the same
                        as idle=poll.
+                       idle=halt. Halt is forced to be used for CPU idle.
+                       In such case C2/C3 won't be used again.
+                       idle=nomwait. Disable mwait for CPU C-states
 
        ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
                        Claim all unknown PCI IDE storage controllers.