Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:

 - a few block updates that fell in my lap

 - lib/ updates

 - checkpatch

 - autofs

 - ipc

 - a ton of misc other things

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits)
  mm: split gfp_mask and mapping flags into separate fields
  fs: use mapping_set_error instead of opencoded set_bit
  treewide: remove redundant #include <linux/kconfig.h>
  hung_task: allow hung_task_panic when hung_task_warnings is 0
  kthread: add kerneldoc for kthread_create()
  kthread: better support freezable kthread workers
  kthread: allow to modify delayed kthread work
  kthread: allow to cancel kthread work
  kthread: initial support for delayed kthread work
  kthread: detect when a kthread work is used by more workers
  kthread: add kthread_destroy_worker()
  kthread: add kthread_create_worker*()
  kthread: allow to call __kthread_create_on_node() with va_list args
  kthread/smpboot: do not park in kthread_create_on_cpu()
  kthread: kthread worker API cleanup
  kthread: rename probe_kthread_data() to kthread_probe_data()
  scripts/tags.sh: enable code completion in VIM
  mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
  kdump, vmcoreinfo: report memory sections virtual addresses
  ipc/sem.c: add cond_resched in exit_sme
  ...

1 files changed, 36 insertions, 14 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 705fb915cbf7..a1489e14f8ee 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -33,6 +33,37 @@ can also be entered as
 Double-quotes can be used to protect spaces in values, e.g.:
 	param="spaces in here"
 
+cpu lists:
+----------
+
+Some kernel parameters take a list of CPUs as a value, e.g.  isolcpus,
+nohz_full, irqaffinity, rcu_nocbs.  The format of this list is:
+
+	<cpu number>,...,<cpu number>
+
+or
+
+	<cpu number>-<cpu number>
+	(must be a positive range in ascending order)
+
+or a mixture
+
+<cpu number>,...,<cpu number>-<cpu number>
+
+Note that for the special case of a range one can split the range into equal
+sized groups and for each group use some amount from the beginning of that
+group:
+
+	<cpu number>-cpu number>:<used size>/<group size>
+
+For example one can add to the command line following parameter:
+
+	isolcpus=1,2,10-20,100-2000:2/25
+
+where the final item represents CPUs 100,101,125,126,150,151,...
+
+
+
 This document may not be entirely up to date and comprehensive. The command
 "modinfo -p ${modulename}" shows a current list of all parameters of a loadable
 module. Loadable modules, after being loaded into the running kernel, also
@@ -1789,13 +1820,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			See Documentation/filesystems/nfs/nfsroot.txt.
 
 	irqaffinity=	[SMP] Set the default irq affinity mask
-			Format:
-			<cpu number>,...,<cpu number>
-			or
-			<cpu number>-<cpu number>
-			(must be a positive range in ascending order)
-			or a mixture
-			<cpu number>,...,<cpu number>-<cpu number>
+			The argument is a cpu list, as described above.
 
 	irqfixup	[HW]
 			When an interrupt is not handled search all handlers
@@ -1812,13 +1837,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			Format: <RDP>,<reset>,<pci_scan>,<verbosity>
 
 	isolcpus=	[KNL,SMP] Isolate CPUs from the general scheduler.
-			Format:
-			<cpu number>,...,<cpu number>
-			or
-			<cpu number>-<cpu number>
-			(must be a positive range in ascending order)
-			or a mixture
-			<cpu number>,...,<cpu number>-<cpu number>
+			The argument is a cpu list, as described above.
 
 			This option can be used to specify one or more CPUs
 			to isolate from the general SMP balancing and scheduling
@@ -2680,6 +2699,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			Default: on
 
 	nohz_full=	[KNL,BOOT]
+			The argument is a cpu list, as described above.
 			In kernels built with CONFIG_NO_HZ_FULL=y, set
 			the specified list of CPUs whose tick will be stopped
 			whenever possible. The boot CPU will be forced outside
@@ -3285,6 +3305,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			See Documentation/blockdev/ramdisk.txt.
 
 	rcu_nocbs=	[KNL]
+			The argument is a cpu list, as described above.
+
 			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