mtd: mxc_nand: reorder part_probes to let cmdline override other sources

[karo-tx-linux.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 9776f068306b7f7ec6425ec4c02b17f5dac4788a..bdbd5754b2080efb2354c66085bfb8a17058d30b 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1304,6 +1304,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        lapic           [X86-32,APIC] Enable the local APIC even if BIOS
                        disabled it.
 
+       lapic=          [x86,APIC] "notscdeadline" Do not use TSC deadline
+                       value for LAPIC timer one-shot implementation. Default
+                       back to the programmable timer unit in the LAPIC.
+
        lapic_timer_c2_ok       [X86,APIC] trust the local apic timer
                        in C2 power state.
 
@@ -1481,9 +1485,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        mem=nn[KMG]     [KNL,BOOT] Force usage of a specific amount of memory
                        Amount of memory to be used when the kernel is not able
                        to see the whole system memory or for test.
-                       [X86-32] Use together with memmap= to avoid physical
-                       address space collisions. Without memmap= PCI devices
-                       could be placed at addresses belonging to unused RAM.
+                       [X86] Work as limiting max address. Use together
+                       with memmap= to avoid physical address space collisions.
+                       Without memmap= PCI devices could be placed at addresses
+                       belonging to unused RAM.
 
        mem=nopentium   [BUGS=X86-32] Disable usage of 4MB pages for kernel
                        memory.
@@ -2394,6 +2399,27 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        ramdisk_size=   [RAM] Sizes of RAM disks in kilobytes
                        See Documentation/blockdev/ramdisk.txt.
 
+       rcu_nocbs=      [KNL,BOOT]
+                       In kernels built with CONFIG_RCU_NOCB_CPU=y, set
+                       the specified list of CPUs to be no-callback CPUs.
+                       Invocation of these CPUs' RCU callbacks will
+                       be offloaded to "rcuoN" kthreads created for
+                       that purpose.  This reduces OS jitter on the
+                       offloaded CPUs, which can be useful for HPC and
+                       real-time workloads.  It can also improve energy
+                       efficiency for asymmetric multiprocessors.
+
+       rcu_nocbs_poll  [KNL,BOOT]
+                       Rather than requiring that offloaded CPUs
+                       (specified by rcu_nocbs= above) explicitly
+                       awaken the corresponding "rcuoN" kthreads,
+                       make these kthreads poll for callbacks.
+                       This improves the real-time response for the
+                       offloaded CPUs by relieving them of the need to
+                       wake up the corresponding kthread, but degrades
+                       energy efficiency by requiring that the kthreads
+                       periodically wake up to do the polling.
+
        rcutree.blimit= [KNL,BOOT]
                        Set maximum number of finished RCU callbacks to process
                        in one batch.
@@ -2859,6 +2885,22 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        to facilitate early boot debugging.
                        See also Documentation/trace/events.txt
 
+       trace_options=[option-list]
+                       [FTRACE] Enable or disable tracer options at boot.
+                       The option-list is a comma delimited list of options
+                       that can be enabled or disabled just as if you were
+                       to echo the option name into
+
+                           /sys/kernel/debug/tracing/trace_options
+
+                       For example, to enable stacktrace option (to dump the
+                       stack trace of each event), add to the command line:
+
+                             trace_options=stacktrace
+
+                       See also Documentation/trace/ftrace.txt "trace options"
+                       section.
+
        transparent_hugepage=
                        [KNL]
                        Format: [always|madvise|never]