Merge branch 'akpm' (second patch-bomb from Andrew)

[cascardo/linux.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 479f332..4a337da 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -829,6 +829,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        CONFIG_DEBUG_PAGEALLOC, hence this option will not help
                        tracking down these problems.
 
+       debug_pagealloc=
+                       [KNL] When CONFIG_DEBUG_PAGEALLOC is set, this
+                       parameter enables the feature at boot time. In
+                       default, it is disabled. We can avoid allocating huge
+                       chunk of memory for debug pagealloc if we don't enable
+                       it at boot time and the system will work mostly same
+                       with the kernel built without CONFIG_DEBUG_PAGEALLOC.
+                       on: enable the feature
+
        debugpat        [X86] Enable PAT debugging
 
        decnet.addr=    [HW,NET]
@@ -1228,9 +1237,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        multiple times interleaved with hugepages= to reserve
                        huge pages of different sizes. Valid pages sizes on
                        x86-64 are 2M (when the CPU supports "pse") and 1G
-                       (when the CPU supports the "pdpe1gb" cpuinfo flag)
-                       Note that 1GB pages can only be allocated at boot time
-                       using hugepages= and not freed afterwards.
+                       (when the CPU supports the "pdpe1gb" cpuinfo flag).
 
        hvc_iucv=       [S390] Number of z/VM IUCV hypervisor console (HVC)
                               terminal devices. Valid values: 0..8
@@ -1446,6 +1453,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                       disable
                         Do not enable intel_pstate as the default
                         scaling driver for the supported processors
+                      no_hwp
+                        Do not enable hardware P state control (HWP)
+                        if available.
 
        intremap=       [X86-64, Intel-IOMMU]
                        on      enable Interrupt Remapping (default)
@@ -2503,12 +2513,21 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        OSS             [HW,OSS]
                        See Documentation/sound/oss/oss-parameters.txt
 
+       page_owner=     [KNL] Boot-time page_owner enabling option.
+                       Storage of the information about who allocated
+                       each page is disabled in default. With this switch,
+                       we can turn it on.
+                       on: enable the feature
+
        panic=          [KNL] Kernel behaviour on panic: delay <timeout>
                        timeout > 0: seconds before rebooting
                        timeout = 0: wait forever
                        timeout < 0: reboot immediately
                        Format: <timeout>
 
+       panic_on_warn   panic() instead of WARN().  Useful to cause kdump
+                       on a WARN().
+
        crash_kexec_post_notifiers
                        Run kdump after running panic-notifiers and dumping
                        kmsg. This only for the users who doubt kdump always
@@ -2940,6 +2959,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        quiescent states.  Units are jiffies, minimum
                        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).
+
        rcutree.rcu_nocb_leader_stride= [KNL]
                        Set the number of NOCB kthread groups, which
                        defaults to the square root of the number of
@@ -3089,6 +3115,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        messages.  Disable with a value less than or equal
                        to zero.
 
+       rcupdate.rcu_self_test= [KNL]
+                       Run the RCU early boot self tests
+
+       rcupdate.rcu_self_test_bh= [KNL]
+                       Run the RCU bh early boot self tests
+
+       rcupdate.rcu_self_test_sched= [KNL]
+                       Run the RCU sched early boot self tests
+
        rdinit=         [KNL]
                        Format: <full_path>
                        Run specified binary instead of /init from the ramdisk,
@@ -3412,6 +3447,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        neutralize any effect of /proc/sys/kernel/sysrq.
                        Useful for debugging.
 
+       tcpmhash_entries= [KNL,NET]
+                       Set the number of tcp_metrics_hash slots.
+                       Default value is 8192 or 16384 depending on total
+                       ram pages. This is used to specify the TCP metrics
+                       cache size. See Documentation/networking/ip-sysctl.txt
+                       "tcp_no_metrics_save" section for more details.
+
        tdfx=           [HW,DRM]
 
        test_suspend=   [SUSPEND][,N]
@@ -3501,7 +3543,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        are saved.
 
        trace_buf_size=nn[KMG]
-                       [FTRACE] will set tracing buffer size.
+                       [FTRACE] will set tracing buffer size on each cpu.
 
        trace_event=[event-list]
                        [FTRACE] Set and start specified trace events in order