1 files changed, 18 insertions, 1 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 54f21a5c262b..7643483bdd6a 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -49,6 +49,7 @@ parameter is applicable:
         ISAPNP  ISA PnP code is enabled.
         ISDN    Appropriate ISDN support is enabled.
         JOY     Appropriate joystick support is enabled.
+        KMEMTRACE kmemtrace is enabled.
         LIBATA  Libata driver is enabled
         LP      Printer support is enabled.
         LOOP    Loopback device support is enabled.
@@ -1047,6 +1048,15 @@ and is between 256 and 4096 characters. It is defined in the file
                         use the HighMem zone if it exists, and the Normal
                         zone if it does not.
 
+        kmemtrace.enable=       [KNL,KMEMTRACE] Format: { yes | no }
+                                Controls whether kmemtrace is enabled
+                                at boot-time.
+
+        kmemtrace.subbufs=n     [KNL,KMEMTRACE] Overrides the number of
+                        subbufs kmemtrace's relay channel has. Set this
+                        higher than default (KMEMTRACE_N_SUBBUFS in code) if
+                        you experience buffer overruns.
+
         movablecore=nn[KMG]     [KNL,X86-32,IA-64,PPC,X86-64] This parameter
                         is similar to kernelcore except it specifies the
                         amount of memory used for migratable allocations.
@@ -1310,8 +1320,13 @@ and is between 256 and 4096 characters. It is defined in the file
 
         memtest=        [KNL,X86] Enable memtest
                         Format: <integer>
-                        range: 0,4 : pattern number
                         default : 0 <disable>
+                        Specifies the number of memtest passes to be
+                        performed. Each pass selects another test
+                        pattern from a given set of patterns. Memtest
+                        fills the memory with this pattern, validates
+                        memory contents and reserves bad memory
+                        regions that are detected.
 
         meye.*=         [HW] Set MotionEye Camera parameters
                         See Documentation/video4linux/meye.txt.
@@ -2329,6 +2344,8 @@ and is between 256 and 4096 characters. It is defined in the file
 
         tp720=          [HW,PS2]
 
+        trace_buf_size=nn[KMG] [ftrace] will set tracing buffer size.
+
         trix=           [HW,OSS] MediaTrix AudioTrix Pro
                         Format:
                         <io>,<irq>,<dma>,<dma2>,<sb_io>,<sb_irq>,<sb_dma>,<mpu_io>,<mpu_irq>