The command `echo > set_ftrace_pid` should be used to clean the filter quietly.
because the command `echo -1 >  set_ftrace_pid` will output the following:
"bash: echo: write error: Invalid argument".

so update the file Documentation/trace/ftrace.txt.
Signed-off-by: Wang Long <long.wanglong@huawei.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

<linux/can/error.h> moved in the big UAPI shuffle; update the document to
note its new location.
Signed-off-by: Stefan Tatschner <stefan@sevenbyte.org>
[jc: added changelog]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Changed 'does not discusses all API calls' to 'does not discuss all API calls'
Signed-off-by: Sharon Dvir <sharon.dvir1@mail.huji.ac.il>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Fix up a number of small typos, duplications and formatting issues.
Signed-off-by: Graham Whaley <graham.whaley@linux.intel.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
[jc: did s/kgdbdoc/kgdboc/]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Now kprobe status have four flags, so kprobes.txt
should reflect all of them.
Signed-off-by: Wang Long <long.wanglong@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
[jc: cleaned up some spurious blank lines]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Bring in the big SubmittingPatches thrashup.

Conflicts:
	Documentation/SubmittingPatches

Some of the source code embedded in mei-client-bus.txt was indented
using spaces. This properly indents it with tabs and also removes a
single space that was placed in front of a closing curly brace.
Reviewed-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Julian Brost <linux-kernel@0x4a42.net>
Signed-off-by: Fabian Hofmann <fabian.hofmann@fau.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Properly indent a list in mei.txt in the same way as another list in
that file.
Reviewed-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Julian Brost <linux-kernel@0x4a42.net>
Signed-off-by: Fabian Hofmann <fabian.hofmann@fau.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Add a space before opening and after closing parentheses where
appropriate.
Reviewed-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Julian Brost <linux-kernel@0x4a42.net>
Signed-off-by: Fabian Hofmann <fabian.hofmann@fau.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Make the heading underlines fit the length of the heading, remove colons
at the end of headings and consistently place an empty line after each
heading and two empty lines before each that is preceded by a paragraph.
Reviewed-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Julian Brost <linux-kernel@0x4a42.net>
Signed-off-by: Fabian Hofmann <fabian.hofmann@fau.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

This patch fix multiple words such as "the the" and "which which"
in Documentation/devicetree.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

This patch fix a spelling typo in Documentation/sysctl/vm.txt
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Don't build the blackfin gptimers-example module when BFIN_GPTIMERS
is not enabled. Allow the build when BFIN_GPTIMERS is =y or =m.

I believe that this patch fixes these build errors, but I don't
have a build environment to test this.

ERROR: "disable_gptimers" [Documentation/blackfin/gptimers-example.ko] undefined!
ERROR: "enable_gptimers" [Documentation/blackfin/gptimers-example.ko] undefined!
ERROR: "set_gptimer_config" [Documentation/blackfin/gptimers-example.ko] undefined!
ERROR: "clear_gptimer_intr" [Documentation/blackfin/gptimers-example.ko] undefined!
ERROR: "get_gptimer_period" [Documentation/blackfin/gptimers-example.ko] undefined!
ERROR: "get_gptimer_pwidth" [Documentation/blackfin/gptimers-example.ko] undefined!
ERROR: "get_gptimer_intr" [Documentation/blackfin/gptimers-example.ko] undefined!
Reported-by: Fenggaung Wu <fengguang.wu@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Suggest to developers who use emacs that they turn on the
instantaneous trailing-whitespace warning feature.
Signed-off-by: Alison Chaiken <alison_chaiken@mentor.com>
[jc: untabified to match its surroundings]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Use find + xargs to compress the generated manpages. Without this patch,
the build can fail with

    gzip -f Documentation/DocBook/man/*.9
    /bin/bash: /usr/bin/gzip: Argument list too long

This happened with qemu user mode emulation on aarch64.
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

As explained in this file:

"GPIOs mappings are defined in the consumer device's node, in a property named
<function>-gpios"

So fix the example to match the convention.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

The Developers Certificate of Origin has a mixture of tabs and white
spaces which is annoying to view if your editor explicitly views white
space characters.

Also remove any trailing white spaces found in the file.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Update descriptions of seq_path() and seq_path_root():
starting with commit v3.2-rc4-1-g02125a82, seq_path_root() no longer
changes the value of root;
starting with commit v3.2-rc7-104-g8c9379e9, some arguments of seq_path()
and seq_path_root() are const.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Rob Landley <rob@landley.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

The official spelling of GNU is GNU and not Gnu.
Bug 89551 https://bugzilla.kernel.org/show_bug.cgi?id=89551Signed-off-by: Kevin Law <kevin@stealsyour.pw>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Improve the wording by changing it from "is provide the" to
"is to give the".
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

- client.txt was moved by f36d2e67 (dmaengine: Move the current doc to a
  folder of its own)
- dmatmest.txt was moved by 935cdb56 (dmanegine: move dmatest.txt to
  dmaengine folder)
- provider.txt was added by c4d2ae96 (Documentation: dmaengine: Add a
  documentation for the dma controller API).

Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: dmaengine@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Signed-off-by: Henrik Austad <henrik@austad.us>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

unified-hierarchy.txt was added by 65731578 (cgroup: add documentation
about unified hierarchy)

Cc: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: cgroups@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Henrik Austad <henrik@austad.us>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Added:
- arm/Makefile was added by adb19fb6 (add makefiles for more targets)
- arm/CCN.txt was added by a33b0daa (ARM CCN PMU driver)

Removed:
- arm/Sharp-LH was removed by 82e6923e (ARM: lh7a40x: remove
  unmaintained platform support)

Not updated:
Documentation/arm/msm/ is missing 00-INDEX (1 files)
Documentation/arm/Samsung-S3C24XX/ is missing 00-INDEX (12 files)
Documentation/arm/nwfpe/ is missing 00-INDEX (4 files)
Documentation/arm/OMAP/ is missing 00-INDEX (2 files)
Documentation/arm/sunxi/ is missing 00-INDEX (2 files)
Documentation/arm/SPEAr/ is missing 00-INDEX (1 files)
Documentation/arm/Marvell/ is missing 00-INDEX (1 files)
Documentation/arm/SA1100/ is missing 00-INDEX (18 files)
Documentation/arm/pxa/ is missing 00-INDEX (1 files)
Documentation/arm/sti/ is missing 00-INDEX (4 files)
Documentation/arm/SH-Mobile/ is missing 00-INDEX (4 files)
Documentation/arm/VFP/ is missing 00-INDEX (1 files)
Documentation/arm/Samsung/ is missing 00-INDEX (3 files)

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: linux-doc@vger.kernel.org (open list:DOCUMENTATION)
Cc: linux-kernel@vger.kernel.org (open list)
Signed-off-by: Henrik Austad <henrik@austad.us>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

- altera_tse.txt was added by 04add4ab (Add Altera Ethernet (TSE)
  Documentation)
- cdc_mbim.txt was added by a563babe (cdc_mbim: add driver
  documentation)
- dctcp.txt was added by e3118e83 (tcp: add DCTCP congestion control
  algorithm)

CC: Jonathan Corbet <corbet@lwn.net>
CC: "David S. Miller" <davem@davemloft.net>
CC: linux-doc@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Henrik Austad <henrik@austad.us>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Added files
- hsi.txt was added by 3a8ab8af (HSI: Add some general description for
  the HSI subsystem)
- lzo.txt was added by d98a0526 (lzo: document part of the encoding)
- xillybus.txt was added by 7051924f (xillybus: Move out of staging)
- mailbox.txt was added by 15320fbc (add documentation for mailbox
  framework)

Moved files
- xommit 214e0aed (Move locking related docs into Documentation/locking/):
  * lockdep-design.txt
  * lockstat.txt
  * mutex-design.txt
  * rt-mutex-design.txt
  * rt-mutex.txt
  * spinlocks.txt
  * ww-mutex-design.txt
- kselftest.txt was moved by 3c415707 (kselftest: Move the docs to the
  Documentation dir)

CC: Davidlohr Bueso <davidlohr@hp.com>
CC: Willy Tarreau <w@1wt.eu>
CC: Randy Dunlap <rdunlap@infradead.org>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Sebastian Reichel <sre@kernel.org>
CC: Eli Billauer <eli.billauer@gmail.com>
CC: Jonathan Corbet <corbet@lwn.net>
CC: Jiri Kosina <trivial@kernel.org>
CC: linux-doc@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Cc: Tim Bird <tim.bird@sonymobile.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Henrik Austad <henrik@austad.us>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Pull KVM fixes from Paolo Bonzini:
 "The important fixes are for two bugs introduced by the merge window.

  On top of this, add a couple of WARN_ONs and stop spamming dmesg on
  pretty much every boot of a virtual machine"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: warn on more invariant breakage
  kvm: fix sorting of memslots with base_gfn == 0
  kvm: x86: drop severity of "generation wraparound" message
  kvm: x86: vmx: reorder some msr writing

Pull vfs fix from Al Viro:
 "An embarrassing bug in lustre patches from this cycle ;-/"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  [regression] braino in "lustre: use is_root_inode()"

Modifying a non-existent slot is not allowed.  Also check that the
first loop doesn't move a deleted slot beyond the used part of
the mslots array.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Before commit 0e60b079 (kvm: change memslot sorting rule from size
to GFN, 2014-12-01), the memslots' sorting key was npages, meaning
that a valid memslot couldn't have its sorting key equal to zero.
On the other hand, a valid memslot can have base_gfn == 0, and invalid
memslots are identified by base_gfn == npages == 0.

Because of this, commit 0e60b079 broke the invariant that invalid
memslots are at the end of the mslots array.  When a memslot with
base_gfn == 0 was created, any invalid memslot before it were left
in place.

This can be fixed by changing the insertion to use a ">=" comparison
instead of "<=", but some care is needed to avoid breaking the case
of deleting a memslot; see the comment in update_memslots.

Thanks to Tiejun Chen for posting an initial patch for this bug.
Reported-by: Jamie Heilman <jamie@audible.transient.net>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Pull sound fixes from Takashi Iwai:
 "Just a couple of fixes for the new Intel Skylake HD-audio support"

* tag 'sound-3.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda_intel: apply the Seperate stream_tag for Skylake
  ALSA: hda_controller: Separate stream_tag for input and output streams.

Since most virtual machines raise this message once, it is a bit annoying.
Make it KERN_DEBUG severity.

Cc: stable@vger.kernel.org
Fixes: 7a2e8aafSigned-off-by: Paolo Bonzini <pbonzini@redhat.com>

The commit 34a1cd60, "x86: vmx: move some vmx setting from
vmx_init() to hardware_setup()", tried to refactor some codes
specific to vmx hardware setting into hardware_setup(), but some
msr writing should depend on our previous setting condition like
enable_apicv, enable_ept and so on.
Reported-by: Jamie Heilman <jamie@audible.transient.net>
Tested-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

In one of the places (ll_md_blocking_ast()) we had open-coded
!is_root_inode(inode) and replaced it with is_root_inode(inode).
See the last chunk of f76c23:
-                   inode != inode->i_sb->s_root->d_inode)
+                   is_root_inode(inode))
should've been
+                   !is_root_inode(inode))
obviously...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Pull parisc build fix from Helge Deller:
 "This unbreaks the kernel compilation on parisc with gcc-4.9"

* 'parisc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: fix out-of-register compiler error in ldcw inline assembler function

The __ldcw macro has a problem when its argument needs to be reloaded from
memory. The output memory operand and the input register operand both need to
be reloaded using a register in class R1_REGS when generating 64-bit code.
This fails because there's only a single register in the class. Instead, use a
memory clobber. This also makes the __ldcw macro a compiler memory barrier.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: <stable@vger.kernel.org>        [3.13+]
Signed-off-by: Helge Deller <deller@gmx.de>