fs/fat: comment fix, fat_bits can be also 32

[linux-2.6-block.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 01aa47d3b6ab607e6a66f2a6a827b4b1afe4da73..491bbd104b063143924647e566be5e7bfc8ac743 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1989,7 +1989,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        seconds.  Use this parameter to check at some
                        other rate.  0 disables periodic checking.
 
-       memtest=        [KNL,X86] Enable memtest
+       memtest=        [KNL,X86,ARM] Enable memtest
                        Format: <integer>
                        default : 0 <disable>
                        Specifies the number of memtest passes to be
@@ -2236,8 +2236,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        nmi_watchdog=   [KNL,BUGS=X86] Debugging features for SMP kernels
                        Format: [panic,][nopanic,][num]
-                       Valid num: 0
+                       Valid num: 0 or 1
                        0 - turn nmi_watchdog off
+                       1 - turn nmi_watchdog on
                        When panic is specified, panic when an NMI watchdog
                        timeout occurs (or 'nopanic' to override the opposite
                        default).
@@ -2322,6 +2323,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        register save and restore. The kernel will only save
                        legacy floating-point registers on task switch.
 
+       nohugeiomap     [KNL,x86] Disable kernel huge I/O mappings.
+
        noxsave         [BUGS=X86] Disables x86 extended register state save
                        and restore using xsave. The kernel will fallback to
                        enabling legacy floating-point and sse state.
@@ -2464,7 +2467,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        nousb           [USB] Disable the USB subsystem
 
-       nowatchdog      [KNL] Disable the lockup detector (NMI watchdog).
+       nowatchdog      [KNL] Disable both lockup detectors, i.e.
+                        soft-lockup and NMI watchdog (hard-lockup).
 
        nowb            [ARM]
 
@@ -2969,6 +2973,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        Set maximum number of finished RCU callbacks to
                        process in one batch.
 
+       rcutree.gp_init_delay=  [KNL]
+                       Set the number of jiffies to delay each step of
+                       RCU grace-period initialization.  This only has
+                       effect when CONFIG_RCU_TORTURE_TEST_SLOW_INIT is
+                       set.
+
        rcutree.rcu_fanout_leaf= [KNL]
                        Increase the number of CPUs assigned to each
                        leaf rcu_node structure.  Useful for very large
@@ -2992,11 +3002,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        value is one, and maximum value is HZ.
 
        rcutree.kthread_prio=    [KNL,BOOT]
-                       Set the SCHED_FIFO priority of the RCU
-                       per-CPU kthreads (rcuc/N). This value is also
-                       used for the priority of the RCU boost threads
-                       (rcub/N). Valid values are 1-99 and the default
-                       is 1 (the least-favored priority).
+                       Set the SCHED_FIFO priority of the RCU per-CPU
+                       kthreads (rcuc/N). This value is also used for
+                       the priority of the RCU boost threads (rcub/N)
+                       and for the RCU grace-period kthreads (rcu_bh,
+                       rcu_preempt, and rcu_sched). If RCU_BOOST is
+                       set, valid values are 1-99 and the default is 1
+                       (the least-favored priority).  Otherwise, when
+                       RCU_BOOST is not set, valid values are 0-99 and
+                       the default is zero (non-realtime operation).
 
        rcutree.rcu_nocb_leader_stride= [KNL]
                        Set the number of NOCB kthread groups, which
@@ -3463,6 +3477,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        improve throughput, but will also increase the
                        amount of memory reserved for use by the client.
 
+       suspend.pm_test_delay=
+                       [SUSPEND]
+                       Sets the number of seconds to remain in a suspend test
+                       mode before resuming the system (see
+                       /sys/power/pm_test). Only available when CONFIG_PM_DEBUG
+                       is set. Default value is 5.
+
        swapaccount=[0|1]
                        [KNL] Enable accounting of swap in memory resource
                        controller if no parameter or 1 is given or disable