X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=Documentation%2Fkernel-parameters.txt;h=c1601e5a8b71e81ae57f7d1d5a70be5449501443;hb=eaa05dfcdb12cf3a7bedf8918dc8699c00944384;hp=f1959b7d13d0eaf9dff13a07ca9e621d23ba9076;hpb=d484864dd96e1830e7689510597707c1df8cd681;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index f1959b7..c68634e 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -335,6 +335,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 					  requirements as needed. This option
 					  does not override iommu=pt
 
+	amd_iommu_dump=	[HW,X86-64]
+			Enable AMD IOMMU driver option to dump the ACPI table
+			for AMD IOMMU. With this option enabled, AMD IOMMU
+			driver will print ACPI tables for AMD IOMMU during
+			IOMMU initialization.
+
 	amijoy.map=	[HW,JOY] Amiga joystick support
 			Map of devices attached to JOY0DAT and JOY1DAT
 			Format: <a>,<b>
@@ -397,8 +403,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	atkbd.softrepeat= [HW]
 			Use software keyboard repeat
 
-	autotest	[IA-64]
-
 	baycom_epp=	[HW,AX25]
 			Format: <io>,<mode>
 
@@ -1453,8 +1457,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			devices can be requested on-demand with the
 			/dev/loop-control interface.
 
-	mcatest=	[IA-64]
-
 	mce		[X86-32] Machine Check Exception
 
 	mce=option	[X86-64] See Documentation/x86/x86_64/boot-options.txt
@@ -2541,6 +2543,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
 	sched_debug	[KNL] Enables verbose scheduler debug messages.
 
+	skew_tick=	[KNL] Offset the periodic timer tick per cpu to mitigate
+			xtime_lock contention on larger systems, and/or RCU lock
+			contention on all systems with CONFIG_MAXSMP set.
+			Format: { "0" | "1" }
+			0 -- disable. (may be 1 via CONFIG_CMDLINE="skew_tick=1"
+			1 -- enable.
+			Note: increases power consumption, thus should only be
+			enabled if running jitter sensitive (HPC/RT) workloads.
+
 	security=	[SECURITY] Choose a security module to enable at boot.
 			If this boot parameter is not specified, only the first
 			security module asking for security registration will be
@@ -2921,6 +2932,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 					initial READ(10) command);
 				o = CAPACITY_OK (accept the capacity
 					reported by the device);
+				p = WRITE_CACHE (the device cache is ON
+					by default);
 				r = IGNORE_RESIDUE (the device reports
 					bogus residue values);
 				s = SINGLE_LUN (the device has only one