Commit Graph

57 Commits

Author SHA1 Message Date
Linus Torvalds c1aa905a30 Power management updates for v4.11-rc2
- Three fixes for intel_pstate problems related to the passive
    mode (in which it acts as a regular cpufreq scaling driver), two
    for the handling of global P-state limits and one for the handling
    of the cpu_frequency tracepoint in that mode (Rafael Wysocki).
 
  - Three fixes for the handling of P-state limits in intel_pstate in
    the active mode (Rafael Wysocki).
 
  - Introduction of a new cpufreq.off=1 kernel command line argument
    that will disable cpufreq entirely if passed to the kernel and
    is simply hooked up to the existing code used by Xen (Len Brown).
 
  - Fix for the schedutil cpufreq governor to prevent it from using
    stale raw frequency values in configurations with mutiple CPUs
    sharing one policy object and a cleanup for it reducing its
    overhead slightly (Viresh Kumar).
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Merge tag 'pm-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix several issues in the intel_pstate driver and one issue in
  the schedutil cpufreq governor, clean up that governor a bit and hook
  up existing code for disabling cpufreq to a new kernel command line
  option.

  Specifics:

   - Three fixes for intel_pstate problems related to the passive mode
     (in which it acts as a regular cpufreq scaling driver), two for the
     handling of global P-state limits and one for the handling of the
     cpu_frequency tracepoint in that mode (Rafael Wysocki).

   - Three fixes for the handling of P-state limits in intel_pstate in
     the active mode (Rafael Wysocki).

   - Introduction of a new cpufreq.off=1 kernel command line argument
     that will disable cpufreq entirely if passed to the kernel and is
     simply hooked up to the existing code used by Xen (Len Brown).

   - Fix for the schedutil cpufreq governor to prevent it from using
     stale raw frequency values in configurations with mutiple CPUs
     sharing one policy object and a cleanup for it reducing its
     overhead slightly (Viresh Kumar)"

* tag 'pm-4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Do not reinit performance limits in ->setpolicy
  cpufreq: intel_pstate: Fix intel_pstate_verify_policy()
  cpufreq: intel_pstate: Fix global settings in active mode
  cpufreq: Add the "cpufreq.off=1" cmdline option
  cpufreq: schedutil: Pass sg_policy to get_next_freq()
  cpufreq: schedutil: move cached_raw_freq to struct sugov_policy
  cpufreq: intel_pstate: Avoid triggering cpu_frequency tracepoint unnecessarily
  cpufreq: intel_pstate: Fix intel_cpufreq_verify_policy()
  cpufreq: intel_pstate: Do not use performance_limits in passive mode
2017-03-09 16:30:37 -08:00
Rafael J. Wysocki fd8e57d5d3 Merge branch 'pm-cpufreq'
* pm-cpufreq:
  cpufreq: intel_pstate: Do not reinit performance limits in ->setpolicy
  cpufreq: intel_pstate: Fix intel_pstate_verify_policy()
  cpufreq: intel_pstate: Fix global settings in active mode
  cpufreq: Add the "cpufreq.off=1" cmdline option
  cpufreq: intel_pstate: Avoid triggering cpu_frequency tracepoint unnecessarily
  cpufreq: intel_pstate: Fix intel_cpufreq_verify_policy()
  cpufreq: intel_pstate: Do not use performance_limits in passive mode
2017-03-09 15:12:27 +01:00
Linus Torvalds f26db9649a There was some breakage with the changes for jump labels in the 4.11 merge
window. Namely powerpc broke as jump labels uses the two LSB bits as flags
 in initialization. A check was added to make sure that all jump label
 entries were 4 bytes aligned, but powerpc didn't work that way for modules.
 Adding an alignment in the module linker script appeared to be the best
 solution.
 
 Jump labels also added an anonymous union to access those LSB bits as a
 normal long. But because this structure had static initialization, it broke
 older compilers that could not statically initialize anonymous unions
 without brackets.
 
 The command line parameter for setting function graph filter broke the
 "EMPTY_HASH" descriptor by modifying it instead of creating a new hash to
 hold the entries.
 
 The command line parameter ftrace_graph_max_depth was added to allow its
 setting at boot time. It uses existing code and only the command line hook
 was added. This is not really a fix, but as it uses existing code without
 affecting anything else, I added it to this release. It was ready before the
 merge window closed, but I wanted to let it sit in linux-next for a couple
 of days first.
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Merge tag 'trace-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "There was some breakage with the changes for jump labels in the 4.11
  merge window:

   - powerpc broke as jump labels uses the two LSB bits as flags in
     initialization.

     A check was added to make sure that all jump label entries were 4
     bytes aligned, but powerpc didn't work that way for modules. Adding
     an alignment in the module linker script appeared to be the best
     solution.

   - Jump labels also added an anonymous union to access those LSB bits
     as a normal long. But because this structure had static
     initialization, it broke older compilers that could not statically
     initialize anonymous unions without brackets.

   - The command line parameter for setting function graph filter broke
     the "EMPTY_HASH" descriptor by modifying it instead of creating a
     new hash to hold the entries.

   - The command line parameter ftrace_graph_max_depth was added to
     allow its setting at boot time. It uses existing code and only the
     command line hook was added.

     This is not really a fix, but as it uses existing code without
     affecting anything else, I added it to this release. It was ready
     before the merge window closed, but I wanted to let it sit in
     linux-next for a couple of days first"

* tag 'trace-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace/graph: Add ftrace_graph_max_depth kernel parameter
  tracing: Add #undef to fix compile error
  jump_label: Add comment about initialization order for anonymous unions
  jump_label: Fix anonymous union initialization
  module: set __jump_table alignment to 8
  ftrace/graph: Do not modify the EMPTY_HASH for the function_graph filter
  tracing: Fix code comment for ftrace_ops_get_func()
2017-03-07 09:37:28 -08:00
Len Brown d82f269255 cpufreq: Add the "cpufreq.off=1" cmdline option
Add the "cpufreq.off=1" cmdline option.

At boot-time, this allows a user to request CONFIG_CPU_FREQ=n
behavior from a kernel built with CONFIG_CPU_FREQ=y.

This is analogous to the existing "cpuidle.off=1" option
and CONFIG_CPU_IDLE=y

This capability is valuable when we need to debug end-user
issues in the BIOS or in Linux.  It is also convenient
for enabling comparisons, which may otherwise require a new kernel,
or help from BIOS SETUP, which may be buggy or unavailable.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-06 00:05:31 +01:00
Todd Brandt 65a50c6562 ftrace/graph: Add ftrace_graph_max_depth kernel parameter
Early trace callgraphs can be extremely large on systems with
several seconds of boot time. The max_depth parameter limits how
deep the graph trace goes and reduces the output size. This
parameter is the same as the max_graph_depth file in tracefs.

Link: http://lkml.kernel.org/r/1488499935-23216-1-git-send-email-todd.e.brandt@linux.intel.com

Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
[ changed comments about debugfs to tracefs ]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-03-03 09:45:01 -05:00
Masahiro Yamada 9332ef9dbd scripts/spelling.txt: add "an user" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  an user||a user
  an userspace||a userspace

I also added "userspace" to the list since it is a common word in Linux.
I found some instances for "an userfaultfd", but I did not add it to the
list.  I felt it is endless to find words that start with "user" such as
"userland" etc., so must draw a line somewhere.

Link: http://lkml.kernel.org/r/1481573103-11329-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:46 -08:00
Linus Torvalds a682e00354 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
Pull md updates from Shaohua Li:
 "Mainly fixes bugs and improves performance:

   - Improve scalability for raid1 from Coly

   - Improve raid5-cache read performance, disk efficiency and IO
     pattern from Song and me

   - Fix a race condition of disk hotplug for linear from Coly

   - A few cleanup patches from Ming and Byungchul

   - Fix a memory leak from Neil

   - Fix WRITE SAME IO failure from me

   - Add doc for raid5-cache from me"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: (23 commits)
  md/raid1: fix write behind issues introduced by bio_clone_bioset_partial
  md/raid1: handle flush request correctly
  md/linear: shutup lockdep warnning
  md/raid1: fix a use-after-free bug
  RAID1: avoid unnecessary spin locks in I/O barrier code
  RAID1: a new I/O barrier implementation to remove resync window
  md/raid5: Don't reinvent the wheel but use existing llist API
  md: fast clone bio in bio_clone_mddev()
  md: remove unnecessary check on mddev
  md/raid1: use bio_clone_bioset_partial() in case of write behind
  md: fail if mddev->bio_set can't be created
  block: introduce bio_clone_bioset_partial()
  md: disable WRITE SAME if it fails in underlayer disks
  md/raid5-cache: exclude reclaiming stripes in reclaim check
  md/raid5-cache: stripe reclaim only counts valid stripes
  MD: add doc for raid5-cache
  Documentation: move MD related doc into a separate dir
  md: ensure md devices are freed before module is unloaded.
  md/r5cache: improve journal device efficiency
  md/r5cache: enable chunk_aligned_read with write back cache
  ...
2017-02-24 14:42:19 -08:00
Linus Torvalds bc49a7831b Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
 "142 patches:

   - DAX updates

   - various misc bits

   - OCFS2 updates

   - most of MM"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (142 commits)
  mm/z3fold.c: limit first_num to the actual range of possible buddy indexes
  mm: fix <linux/pagemap.h> stray kernel-doc notation
  zram: remove obsolete sysfs attrs
  mm/memblock.c: remove unnecessary log and clean up
  oom-reaper: use madvise_dontneed() logic to decide if unmap the VMA
  mm: drop unused argument of zap_page_range()
  mm: drop zap_details::check_swap_entries
  mm: drop zap_details::ignore_dirty
  mm, page_alloc: warn_alloc nodemask is NULL when cpusets are disabled
  mm: help __GFP_NOFAIL allocations which do not trigger OOM killer
  mm, oom: do not enforce OOM killer for __GFP_NOFAIL automatically
  mm: consolidate GFP_NOFAIL checks in the allocator slowpath
  lib/show_mem.c: teach show_mem to work with the given nodemask
  arch, mm: remove arch specific show_mem
  mm, page_alloc: warn_alloc print nodemask
  mm, page_alloc: do not report all nodes in show_mem
  Revert "mm: bail out in shrink_inactive_list()"
  mm, vmscan: consider eligible zones in get_scan_count
  mm, vmscan: cleanup lru size claculations
  mm, vmscan: do not count freed pages as PGDEACTIVATE
  ...
2017-02-22 19:29:24 -08:00
Linus Torvalds c1aac62f36 A slightly quieter cycle for documentation this time around.
Three more DocBook template files have been converted to RST; only 21 to
 go.  There are various build improvements and the usual array of
 documentation improvements and fixes.
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Merge tag 'docs-4.11' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "A slightly quieter cycle for documentation this time around.

  Three more DocBook template files have been converted to RST; only 21
  to go. There are various build improvements and the usual array of
  documentation improvements and fixes"

* tag 'docs-4.11' of git://git.lwn.net/linux: (44 commits)
  docs / driver-api: Fix structure references in device_link.rst
  PM / docs: Fix structure references in device.rst
  Add a target to check broken external links in the Documentation
  Documentation: Fix linux-api list typo
  Documentation: DocBook/Makefile comment typo
  Improve sparse documentation
  Documentation: make Makefile.sphinx no-ops quieter
  Documentation: DMA-ISA-LPC.txt
  Documentation: input: fix path to input code definitions
  docs: Remove the copyright year from conf.py
  docs: Fix a warning in the Korean HOWTO.rst translation
  PM / sleep / docs: Convert PM notifiers document to reST
  PM / core / docs: Convert sleep states API document to reST
  PM / core: Update kerneldoc comments in pm.h
  doc-rst: Fix recursive make invocation from macros
  doc-rst: Delete output of failed dot-SVG conversion
  doc-rst: Break shell command sequences on failure
  Documentation/sphinx: make targets independent of Sphinx work for HAVE_SPHINX=0
  doc-rst: fixed cleandoc target when used with O=dir
  Documentation/sphinx: prevent generation of .pyc files in the source tree
  ...
2017-02-22 18:51:29 -08:00
Tejun Heo 1663f26df3 slub: make sysfs directories for memcg sub-caches optional
SLUB creates a per-cache directory under /sys/kernel/slab which hosts a
bunch of debug files.  Usually, there aren't that many caches on a
system and this doesn't really matter; however, if memcg is in use, each
cache can have per-cgroup sub-caches.  SLUB creates the same directories
for these sub-caches under /sys/kernel/slab/$CACHE/cgroup.

Unfortunately, because there can be a lot of cgroups, active or
draining, the product of the numbers of caches, cgroups and files in
each directory can reach a very high number - hundreds of thousands is
commonplace.  Millions and beyond aren't difficult to reach either.

What's under /sys/kernel/slab is primarily for debugging and the
information and control on the a root cache already cover its
sub-caches.  While having a separate directory for each sub-cache can be
helpful for development, it doesn't make much sense to pay this amount
of overhead by default.

This patch introduces a boot parameter slub_memcg_sysfs which determines
whether to create sysfs directories for per-memcg sub-caches.  It also
adds CONFIG_SLUB_MEMCG_SYSFS_ON which determines the boot parameter's
default value and defaults to 0.

[akpm@linux-foundation.org: kset_unregister(NULL) is legal]
Link: http://lkml.kernel.org/r/20170204145203.GB26958@mtj.duckdns.org
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22 16:41:27 -08:00
Linus Torvalds 37c85961c3 TTY/Serial driver patches for 4.11-rc1
Here is the big tty/serial driver patchset for 4.11-rc1.
 
 Not much here, but a lot of little fixes and individual serial driver
 updates all over the subsystem.  Majority are for the sh-sci driver and
 platform (the arch-specific changes have acks from the maintainer).
 
 The start of the "serial bus" code is here as well, but nothing is
 converted to use it yet.  That work is still ongoing, hopefully will
 start to show up across different subsystems for 4.12 (bluetooth is one
 major place that will be used.)
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the big tty/serial driver patchset for 4.11-rc1.

  Not much here, but a lot of little fixes and individual serial driver
  updates all over the subsystem. Majority are for the sh-sci driver and
  platform (the arch-specific changes have acks from the maintainer).

  The start of the "serial bus" code is here as well, but nothing is
  converted to use it yet. That work is still ongoing, hopefully will
  start to show up across different subsystems for 4.12 (bluetooth is
  one major place that will be used.)

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (109 commits)
  tty: pl011: Work around QDF2400 E44 stuck BUSY bit
  atmel_serial: Use the fractional divider when possible
  tty: Remove extra include in HVC console tty framework
  serial: exar: Enable MSI support
  serial: exar: Move register defines from uapi header to consumer site
  serial: pci: Remove unused pci_boards entries
  serial: exar: Move Commtech adapters to 8250_exar as well
  serial: exar: Fix feature control register constants
  serial: exar: Fix initialization of EXAR registers for ports > 0
  serial: exar: Fix mapping of port I/O resources
  serial: sh-sci: fix hardware RX trigger level setting
  tty/serial: atmel: ensure state is restored after suspending
  serial: 8250_dw: Avoid "too much work" from bogus rx timeout interrupt
  serdev: ttyport: check whether tty_init_dev() fails
  serial: 8250_pci: make pciserial_detach_ports() static
  ARM: dts: STiH410-b2260: Enable HW flow-control
  ARM: dts: STiH407-family: Use new Pinctrl groups
  ARM: dts: STiH407-pinctrl: Add Pinctrl group for HW flow-control
  ARM: dts: STiH410-b2260: Identify the UART RTS line
  dt-bindings: serial: Update 'uart-has-rtscts' description
  ...
2017-02-22 12:17:25 -08:00
Linus Torvalds e30aee9e10 char/misc driver patches for 4.11-rc1
Here is the big char/misc driver patchset for 4.11-rc1.
 
 Lots of different driver subsystems updated here.  Rework for the hyperv
 subsystem to handle new platforms better, mei and w1 and extcon driver
 updates, as well as a number of other "minor" driver updates.  Full
 details are in the shortlog below.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver patchset for 4.11-rc1.

  Lots of different driver subsystems updated here: rework for the
  hyperv subsystem to handle new platforms better, mei and w1 and extcon
  driver updates, as well as a number of other "minor" driver updates.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits)
  goldfish: Sanitize the broken interrupt handler
  x86/platform/goldfish: Prevent unconditional loading
  vmbus: replace modulus operation with subtraction
  vmbus: constify parameters where possible
  vmbus: expose hv_begin/end_read
  vmbus: remove conditional locking of vmbus_write
  vmbus: add direct isr callback mode
  vmbus: change to per channel tasklet
  vmbus: put related per-cpu variable together
  vmbus: callback is in softirq not workqueue
  binder: Add support for file-descriptor arrays
  binder: Add support for scatter-gather
  binder: Add extra size to allocator
  binder: Refactor binder_transact()
  binder: Support multiple /dev instances
  binder: Deal with contexts in debugfs
  binder: Support multiple context managers
  binder: Split flat_binder_object
  auxdisplay: ht16k33: remove private workqueue
  auxdisplay: ht16k33: rework input device initialization
  ...
2017-02-22 11:38:22 -08:00
Linus Torvalds ff47d8c050 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:

 - New entropy generation for the pseudo random number generator.

 - Early boot printk output via sclp to help debug crashes on boot. This
   needs to be enabled with a kernel parameter.

 - Add proper no-execute support with a bit in the page table entry.

 - Bug fixes and cleanups.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (65 commits)
  s390/syscall: fix single stepped system calls
  s390/zcrypt: make ap_bus explicitly non-modular
  s390/zcrypt: Removed unneeded debug feature directory creation.
  s390: add missing "do {} while (0)" loop constructs to multiline macros
  s390/mm: add cond_resched call to kernel page table dumper
  s390: get rid of MACHINE_HAS_PFMF and MACHINE_HAS_HPAGE
  s390/mm: make memory_block_size_bytes available for !MEMORY_HOTPLUG
  s390: replace ACCESS_ONCE with READ_ONCE
  s390: Audit and remove any remaining unnecessary uses of module.h
  s390: mm: Audit and remove any unnecessary uses of module.h
  s390: kernel: Audit and remove any unnecessary uses of module.h
  s390/kdump: Use "LINUX" ELF note name instead of "CORE"
  s390: add no-execute support
  s390: report new vector facilities
  s390: use correct input data address for setup_randomness
  s390/sclp: get rid of common response code handling
  s390/sclp: don't add new lines to each printed string
  s390/sclp: make early sclp code readable
  s390/sclp: disable early sclp code as soon as the base sclp driver is active
  s390/sclp: move early printk code to drivers
  ...
2017-02-22 10:20:04 -08:00
Linus Torvalds 8a9365a472 Merge branch 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpufeature updates from Ingo Molnar:
 "The main changes in this cycle were related to enable ring-3
  MONITOR/MWAIT instructions support on supported CPUs, by Grzegorz
  Andrejczuk and Piotr Luc"

* 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpufeature: Move RING3MWAIT feature to avoid conflicts
  x86/cpufeature: Enable RING3MWAIT for Knights Mill
  x86/cpufeature: Enable RING3MWAIT for Knights Landing
  x86/cpufeature: Add RING3MWAIT to CPU features
  x86/elf: Add HWCAP2 to expose ring 3 MONITOR/MWAIT
  x86/msr: Add MSR_MISC_FEATURE_ENABLES and RING3MWAIT bit
  x86/cpufeature: Add AVX512_VPOPCNTDQ feature
2017-02-20 14:37:08 -08:00
Linus Torvalds f7458a5d63 Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
 "The RCU changes in this cycle are:

   - Dynticks updates, consolidating open-coded counter accesses into a
     well-defined API

   - SRCU updates: Simplify algorithm, add formal verification

   - Documentation updates

   - Miscellaneous fixes

   - Torture-test updates

  Most of the diffstat comes from the relatively large documentation
  update"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
  srcu: Reduce probability of SRCU ->unlock_count[] counter overflow
  rcutorture: Add CBMC-based formal verification for SRCU
  srcu: Force full grace-period ordering
  srcu: Implement more-efficient reader counts
  rcu: Adjust FQS offline checks for exact online-CPU detection
  rcu: Check cond_resched_rcu_qs() state less often to reduce GP overhead
  rcu: Abstract extended quiescent state determination
  rcu: Abstract dynticks extended quiescent state enter/exit operations
  rcu: Add lockdep checks to synchronous expedited primitives
  rcu: Eliminate unused expedited_normal counter
  llist: Clarify comments about when locking is needed
  rcu: Fix comment in rcu_organize_nocb_kthreads()
  rcu: Enable RCU tracepoints by default to aid in debugging
  rcu: Make rcu_cpu_starting() use its "cpu" argument
  rcu: Add comment headers to expedited-grace-period counter functions
  rcu: Don't wake rcuc/X kthreads on NOCB CPUs
  rcu: Re-enable TASKS_RCU for User Mode Linux
  rcu: Once again use NMI-based stack traces in stall warnings
  rcu: Remove short-term CPU kicking
  rcu: Add long-term CPU kicking
  ...
2017-02-20 11:21:17 -08:00
Linus Torvalds 20dcfe1b7d Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
 "Nothing exciting, just the usual pile of fixes, updates and cleanups:

   - A bunch of clocksource driver updates

   - Removal of CONFIG_TIMER_STATS and the related /proc file

   - More posix timer slim down work

   - A scalability enhancement in the tick broadcast code

   - Math cleanups"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  hrtimer: Catch invalid clockids again
  math64, tile: Fix build failure
  clocksource/drivers/arm_arch_timer:: Mark cyclecounter __ro_after_init
  timerfd: Protect the might cancel mechanism proper
  timer_list: Remove useless cast when printing
  time: Remove CONFIG_TIMER_STATS
  clocksource/drivers/arm_arch_timer: Work around Hisilicon erratum 161010101
  clocksource/drivers/arm_arch_timer: Introduce generic errata handling infrastructure
  clocksource/drivers/arm_arch_timer: Remove fsl-a008585 parameter
  clocksource/drivers/arm_arch_timer: Add dt binding for hisilicon-161010101 erratum
  clocksource/drivers/ostm: Add renesas-ostm timer driver
  clocksource/drivers/ostm: Document renesas-ostm timer DT bindings
  clocksource/drivers/tcb_clksrc: Use 32 bit tcb as sched_clock
  clocksource/drivers/gemini: Add driver for the Cortina Gemini
  clocksource: add DT bindings for Cortina Gemini
  clockevents: Add a clkevt-of mechanism like clksrc-of
  tick/broadcast: Reduce lock cacheline contention
  timers: Omit POSIX timer stuff from task_struct when disabled
  x86/timer: Make delay() work during early bootup
  delay: Add explanation of udelay() inaccuracy
  ...
2017-02-20 10:06:32 -08:00
Linus Torvalds 345fb0a9a6 * Make amd64_edac still load on a machine with unpopulated nodes + cleanups (Yazen Ghannam)
* Expose per-DIMM error counts in sysfs (Aaron Miller)
 
 * Add T2080 l2-cache support to mpc85xx (Chris Packham)
 
 * Random other small improvements/cleanups/fixlets
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Merge tag 'edac_for_4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:

 - Make amd64_edac still load on a machine with unpopulated nodes +
   cleanups (Yazen Ghannam)

 - Expose per-DIMM error counts in sysfs (Aaron Miller)

 - Add T2080 l2-cache support to mpc85xx (Chris Packham)

 - Random other small improvements/cleanups/fixlets

* tag 'edac_for_4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, mce_amd: Print IPID and Syndrome on a separate line
  EDAC, amd64: Bump driver version
  MAINTAINERS, EDAC: Update email for Thor Thayer
  EDAC, fsl_ddr: Make locally used symbols static
  EDAC, mpc85xx: Add T2080 l2-cache support
  EDAC, amd64: Add x86cpuid sanity check during init
  EDAC, amd64: Don't treat ECC disabled as failure
  EDAC: Add routine to check if MC devices list is empty
  EDAC, amd64: Remove unused printing macros
  EDAC, amd64: Rework messages in ecc_enabled()
  EDAC, amd64: Move global code out of instance functions
  EDAC, amd64: Free unused memory when init_one_instance() fails
  EDAC, mce_amd: Give more context to deferred error message
  EDAC, i7300: Test for the second channel properly
  EDAC, sb_edac: Get rid of ->show_interleave_mode()
  EDAC: Expose per-DIMM error counts in sysfs
  EDAC, amd64: Save and return err code from probe_one_instance()
  EDAC, i82975x: Add ioremap_nocache() error handling
  EDAC: Fix typos in enum mem_type comments
  EDAC: Make dev_attr_sdram_scrub_rate static
2017-02-20 09:54:46 -08:00
Thomas Gleixner 47512cfd0d x86/platform/goldfish: Prevent unconditional loading
The goldfish platform code registers the platform device unconditionally
which causes havoc in several ways if the goldfish_pdev_bus driver is
enabled:

 - Access to the hardcoded physical memory region, which is either not
   available or contains stuff which is completely unrelated.

 - Prevents that the interrupt of the serial port can be requested

 - In case of a spurious interrupt it goes into a infinite loop in the
   interrupt handler of the pdev_bus driver (which needs to be fixed
   seperately).

Add a 'goldfish' command line option to make the registration opt-in when
the platform is compiled in.

I'm seriously grumpy about this engineering trainwreck, which has seven
SOBs from Intel developers for 50 lines of code. And none of them figured
out that this is broken. Impressive fail!

Fixes: ddd70cf93d ("goldfish: platform device for x86")
Reported-by: Gabriel C <nix.or.die@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-15 08:49:58 -08:00
Shaohua Li 5a6265f9cd MD: add doc for raid5-cache
I'm starting document of the raid5-cache feature. Please note this is a
kernel doc instead of a mdadm manual, so I don't add the details about
how to use the feature in mdadm side.

Cc: NeilBrown <neilb@suse.com>
Reviewed-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
2017-02-13 09:17:54 -08:00
Ding Tianhong 5444ea6a7f clocksource/drivers/arm_arch_timer: Remove fsl-a008585 parameter
Having a command line option to flip the errata handling for a
particular erratum is a little bit unusual, and it's vastly superior to
pass this in the DT. By common consensus, it's best to kill off the
command line parameter.

Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
[Mark: split patch, reword commit message]
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2017-02-08 00:14:03 +01:00
Grzegorz Andrejczuk e16fd002af x86/cpufeature: Enable RING3MWAIT for Knights Landing
Enable ring 3 MONITOR/MWAIT for Intel Xeon Phi x200 codenamed Knights
Landing.

Presence of this feature cannot be detected automatically (by reading any
other MSR) therefore it is required to explicitly check for the family and
model of the CPU before attempting to enable it.

Signed-off-by: Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com>
Cc: Piotr.Luc@intel.com
Cc: dave.hansen@linux.intel.com
Link: http://lkml.kernel.org/r/1484918557-15481-5-git-send-email-grzegorz.andrejczuk@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-02-04 08:51:09 +01:00
Steven Price 31fc93d5f2 dynamic-debug-howto: Correct echo -c to -n
Two of the example command lines use an argument to echo of "-c" which
isn't valid in (most versions of) echo causing these examples to fail.
Correct the argument to "-n" which works correctly.

Signed-off-by: Steven Price <steven@ecrips.co.uk>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-26 15:11:02 -07:00
Aaron Miller 4fb6fde74d EDAC: Expose per-DIMM error counts in sysfs
The old csrowX sysfs directories have per-csrow error counters, but the
new dimmX directories do not currently expose error counts.

EDAC already keeps these counts, add them to sysfs so per-DIMM counts
are still available when CONFIG_EDAC_LEGACY_SYSFS=n.

Signed-off-by: Aaron Miller <aaronmiller@fb.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20161103220153.3997328-1-aaronmiller@fb.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2017-01-19 10:29:40 +01:00
Heiko Carstens 89175cf766 s390: provide sclp based boot console
Use the early sclp code to provide a boot console. This boot console
is available if the kernel parameter "earlyprintk" has been specified,
just like it works for other architectures that also provide an early
boot console.

This makes debugging of early problems much easier, since now we
finally have working console output even before memory detection is
running.

The boot console will be automatically disabled as soon as another
console will be registered.

Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-01-16 07:27:55 +01:00
Paul E. McKenney e3c50dfbbd doc: Add rcutree.rcu_kick_kthreads to kernel-parameters.txt
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14 21:30:39 -08:00
Sanjeev e57ae44a58 Doc: clarify that GPL is GPL v2, not v2+
... and a minor missing period at EOL

Signed-off-by: Sanjeev Gupta <ghane0@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-13 10:57:30 -07:00
Martin Blumenstingl ec84aa0a92 tty: serial: lantiq: implement earlycon support
This allows enabling earlycon for devices with a Lantiq serial console
by splitting lqasc_serial_port_write() from lqasc_console_write() and
re-using the new function for earlycon's write callback.

The kernel-parameter name matches the driver name ("lantiq"), similar
to how other drivers implement this.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-12 11:51:24 +01:00
Linus Torvalds 2fd8774c79 Merge branch 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb fixes from Konrad Rzeszutek Wilk:
 "This has one fix to make i915 work when using Xen SWIOTLB, and a
  feature from Geert to aid in debugging of devices that can't do DMA
  outside the 32-bit address space.

  The feature from Geert is on top of v4.10 merge window commit
  (specifically you pulling my previous branch), as his changes were
  dependent on the Documentation/ movement patches.

  I figured it would just easier than me trying than to cherry-pick the
  Documentation patches to satisfy git.

  The patches have been soaking since 12/20, albeit I updated the last
  patch due to linux-next catching an compiler error and adding an
  Tested-and-Reported-by tag"

* 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
  swiotlb: Export swiotlb_max_segment to users
  swiotlb: Add swiotlb=noforce debug option
  swiotlb: Convert swiotlb_force from int to enum
  x86, swiotlb: Simplify pci_swiotlb_detect_override()
2017-01-06 10:53:21 -08:00
Lv Zheng 9c4aa1eecb ACPI / sysfs: Provide quirk mechanism to prevent GPE flooding
Sometimes, the users may require a quirk to be provided from ACPI subsystem
core to prevent a GPE from flooding.
Normally, if a GPE cannot be dispatched, ACPICA core automatically prevents
the GPE from firing. But there are cases the GPE is dispatched by _Lxx/_Exx
provided via AML table, and OSPM is lacking of the knowledge to get
_Lxx/_Exx correctly executed to handle the GPE, thus the GPE flooding may
still occur.

The existing quirk mechanism can be enabled/disabled using the following
commands to prevent such kind of GPE flooding during runtime:
 # echo mask > /sys/firmware/acpi/interrupts/gpe00
 # echo unmask > /sys/firmware/acpi/interrupts/gpe00
To avoid GPE flooding during boot, we need a boot stage mechanism.

This patch provides such a boot stage quirk mechanism to stop this kind of
GPE flooding. This patch doesn't fix any feature gap but since the new
feature gaps could be found in the future endlessly, and can disappear if
the feature gaps are filled, providing a boot parameter rather than a DMI
table should suffice.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=53071
Link: https://bugzilla.kernel.org/show_bug.cgi?id=117481
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/887793
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-12-26 23:16:39 +01:00
Mimi Zohar d68a6fe9fc ima: define a canonical binary_runtime_measurements list format
The IMA binary_runtime_measurements list is currently in platform native
format.

To allow restoring a measurement list carried across kexec with a
different endianness than the targeted kernel, this patch defines
little-endian as the canonical format.  For big endian systems wanting
to save/restore the measurement list from a system with a different
endianness, a new boot command line parameter named "ima_canonical_fmt"
is defined.

Considerations: use of the "ima_canonical_fmt" boot command line option
will break existing userspace applications on big endian systems
expecting the binary_runtime_measurements list to be in platform native
format.

Link: http://lkml.kernel.org/r/1480554346-29071-10-git-send-email-zohar@linux.vnet.ibm.com
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andreas Steffen <andreas.steffen@strongswan.org>
Cc: Josh Sklar <sklar@linux.vnet.ibm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-20 09:48:45 -08:00
Geert Uytterhoeven fff5d99225 swiotlb: Add swiotlb=noforce debug option
On architectures like arm64, swiotlb is tied intimately to the core
architecture DMA support. In addition, ZONE_DMA cannot be disabled.

To aid debugging and catch devices not supporting DMA to memory outside
the 32-bit address space, add a kernel command line option
"swiotlb=noforce", which disables the use of bounce buffers.
If specified, trying to map memory that cannot be used with DMA will
fail, and a rate-limited warning will be printed.

Note that io_tlb_nslabs is set to 1, which is the minimal supported
value.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2016-12-19 09:05:20 -05:00
Linus Torvalds 9dfe495c7b edac updates for v4.10-rc1
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Merge tag 'edac/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac

Pull edac updates from Mauro Carvalho Chehab:
 "This contains the conversion of the EDAC uAPI documentation to ReST
  and the addition of the EDAC kAPI documentation to the driver-api
  docs.

  It also splits the EDAC headers by their functions"

* tag 'edac/v4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  EDAC: Document HW_EVENT_ERR_DEFERRED type
  edac.rst: move concepts dictionary from edac.h
  edac: fix kenel-doc markups at edac.h
  edac: fix kernel-doc tags at the drivers/edac_*.h
  edac: adjust docs location at MAINTAINERS and 00-INDEX
  driver-api: create an edac.rst file with EDAC documentation
  edac: move documentation from edac_mc.c to edac_core.h
  edac: move documentation from edac_pci*.c to edac_pci.h
  edac: move documentation from edac_device to edac_core.h
  edac: rename edac_core.h to edac_mc.h
  edac: move EDAC device definitions to drivers/edac/edac_device.h
  edac: move EDAC PCI definitions to drivers/edac/edac_pci.h
  docs-rst: admin-guide: add documentation for EDAC
  edac.txt: Improve documentation, adding RAS introduction
  edac.txt: update information about newer Intel CPUs
  edac.txt: remove info that the Nehalem EDAC is experimental
  edac.txt: convert EDAC documentation to ReST
  edac.txt: add a section explaining the dimmX and rankX directories
  edac: edac_core.h: remove prototype for edac_pci_reset_delay_period()
  edac: edac_core.h: get rid of unused kobj_complete
2016-12-16 09:37:03 -08:00
Mauro Carvalho Chehab 66c222a02f edac: fix kernel-doc tags at the drivers/edac_*.h
Some kernel-doc tags don't provide good descriptions or use
a different style. Adjust them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-12-15 08:58:10 -02:00
Mauro Carvalho Chehab fd77f6ba7b docs-rst: admin-guide: add documentation for EDAC
EDAC is part of the Kernel's RAS facilities, with is useful for
system admins to detect errors. So, add it to the admin's guide.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-12-15 08:54:50 -02:00
Linus Torvalds 5266e70335 TTY/Serial patches for 4.10-rc1
Here's the tty/serial patchset for 4.10-rc1.
 
 It's been a quiet kernel cycle for this subsystem, just a small number
 of changes.  A few new serial drivers, and some cleanups to the old
 vgacon logic, and other minor serial driver changes as well.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here's the tty/serial patchset for 4.10-rc1.

  It's been a quiet kernel cycle for this subsystem, just a small number
  of changes. A few new serial drivers, and some cleanups to the old
  vgacon logic, and other minor serial driver changes as well.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (54 commits)
  serial: 8250_mid fix calltrace when hotplug 8250 serial controller
  console: Move userspace I/O out of console_lock to fix lockdep warning
  tty: nozomi: avoid sprintf buffer overflow
  serial: 8250_pci: Detach low-level driver during PCI error recovery
  serial: core: don't check port twice in a row
  mxs-auart: count FIFO overrun errors
  serial: 8250_dw: Add support for IrDA SIR mode
  serial: 8250: Expose set_ldisc function
  serial: 8250: Add IrDA to UART capabilities
  serial: 8250_dma: power off device after TX is done
  serial: 8250_port: export serial8250_rpm_{get|put}_tx()
  serial: sunsu: Free memory when probe fails
  serial: sunhv: Free memory when remove() is called
  vt: fix Scroll Lock LED trigger name
  tty: typo in comments in drivers/tty/vt/keyboard.c
  tty: amba-pl011: Add earlycon support for SBSA UART
  tty: nozomi: use permission-specific DEVICE_ATTR variants
  tty: serial: Make the STM32 serial port depend on it's arch
  serial: ifx6x60: Free memory when probe fails
  serial: ioc4_serial: Free memory when kzalloc fails during probe
  ...
2016-12-13 11:18:24 -08:00
Linus Torvalds 7b9dc3f75f Power management material for v4.10-rc1
- New cpufreq driver for Broadcom STB SoCs and a Device Tree binding
    for it (Markus Mayer).
 
  - Support for ARM Integrator/AP and Integrator/CP in the generic
    DT cpufreq driver and elimination of the old Integrator cpufreq
    driver (Linus Walleij).
 
  - Support for the zx296718, r8a7743 and r8a7745, Socionext UniPhier,
    and PXA SoCs in the the generic DT cpufreq driver (Baoyou Xie,
    Geert Uytterhoeven, Masahiro Yamada, Robert Jarzmik).
 
  - cpufreq core fix to eliminate races that may lead to using
    inactive policy objects and related cleanups (Rafael Wysocki).
 
  - cpufreq schedutil governor update to make it use SCHED_FIFO
    kernel threads (instead of regular workqueues) for doing delayed
    work (to reduce the response latency in some cases) and related
    cleanups (Viresh Kumar).
 
  - New cpufreq sysfs attribute for resetting statistics (Markus
    Mayer).
 
  - cpufreq governors fixes and cleanups (Chen Yu, Stratos Karafotis,
    Viresh Kumar).
 
  - Support for using generic cpufreq governors in the intel_pstate
    driver (Rafael Wysocki).
 
  - Support for per-logical-CPU P-state limits and the EPP/EPB
    (Energy Performance Preference/Energy Performance Bias) knobs
    in the intel_pstate driver (Srinivas Pandruvada).
 
  - New CPU ID for Knights Mill in intel_pstate (Piotr Luc).
 
  - intel_pstate driver modification to use the P-state selection
    algorithm based on CPU load on platforms with the system profile
    in the ACPI tables set to "mobile" (Srinivas Pandruvada).
 
  - intel_pstate driver cleanups (Arnd Bergmann, Rafael Wysocki,
    Srinivas Pandruvada).
 
  - cpufreq powernv driver updates including fast switching support
    (for the schedutil governor), fixes and cleanus (Akshay Adiga,
    Andrew Donnellan, Denis Kirjanov).
 
  - acpi-cpufreq driver rework to switch it over to the new CPU
    offline/online state machine (Sebastian Andrzej Siewior).
 
  - Assorted cleanups in cpufreq drivers (Wei Yongjun, Prashanth
    Prakash).
 
  - Idle injection rework (to make it use the regular idle path
    instead of a home-grown custom one) and related powerclamp
    thermal driver updates (Peter Zijlstra, Jacob Pan, Petr Mladek,
    Sebastian Andrzej Siewior).
 
  - New CPU IDs for Atom Z34xx and Knights Mill in intel_idle (Andy
    Shevchenko, Piotr Luc).
 
  - intel_idle driver cleanups and switch over to using the new CPU
    offline/online state machine (Anna-Maria Gleixner, Sebastian
    Andrzej Siewior).
 
  - cpuidle DT driver update to support suspend-to-idle properly
    (Sudeep Holla).
 
  - cpuidle core cleanups and misc updates (Daniel Lezcano, Pan Bian,
    Rafael Wysocki).
 
  - Preliminary support for power domains including CPUs in the
    generic power domains (genpd) framework and related DT bindings
    (Lina Iyer).
 
  - Assorted fixes and cleanups in the generic power domains (genpd)
    framework (Colin Ian King, Dan Carpenter, Geert Uytterhoeven).
 
  - Preliminary support for devices with multiple voltage regulators
    and related fixes and cleanups in the Operating Performance Points
    (OPP) library (Viresh Kumar, Masahiro Yamada, Stephen Boyd).
 
  - System sleep state selection interface rework to make it easier
    to support suspend-to-idle as the default system suspend method
    (Rafael Wysocki).
 
  - PM core fixes and cleanups, mostly related to the interactions
    between the system suspend and runtime PM frameworks (Ulf Hansson,
    Sahitya Tummala, Tony Lindgren).
 
  - Latency tolerance PM QoS framework imorovements (Andrew
    Lutomirski).
 
  - New Knights Mill CPU ID for the Intel RAPL power capping driver
    (Piotr Luc).
 
  - Intel RAPL power capping driver fixes, cleanups and switch over
    to using the new CPU offline/online state machine (Jacob Pan,
    Thomas Gleixner, Sebastian Andrzej Siewior).
 
  - Fixes and cleanups in the exynos-ppmu, exynos-nocp, rk3399_dmc,
    rockchip-dfi devfreq drivers and the devfreq core (Axel Lin,
    Chanwoo Choi, Javier Martinez Canillas, MyungJoo Ham, Viresh
    Kumar).
 
  - Fix for false-positive KASAN warnings during resume from ACPI S3
    (suspend-to-RAM) on x86 (Josh Poimboeuf).
 
  - Memory map verification during resume from hibernation on x86 to
    ensure a consistent address space layout (Chen Yu).
 
  - Wakeup sources debugging enhancement (Xing Wei).
 
  - rockchip-io AVS driver cleanup (Shawn Lin).
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Merge tag 'pm-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "Again, cpufreq gets more changes than the other parts this time (one
  new driver, one old driver less, a bunch of enhancements of the
  existing code, new CPU IDs, fixes, cleanups)

  There also are some changes in cpuidle (idle injection rework, a
  couple of new CPU IDs, online/offline rework in intel_idle, fixes and
  cleanups), in the generic power domains framework (mostly related to
  supporting power domains containing CPUs), and in the Operating
  Performance Points (OPP) library (mostly related to supporting devices
  with multiple voltage regulators)

  In addition to that, the system sleep state selection interface is
  modified to make it easier for distributions with unchanged user space
  to support suspend-to-idle as the default system suspend method, some
  issues are fixed in the PM core, the latency tolerance PM QoS
  framework is improved a bit, the Intel RAPL power capping driver is
  cleaned up and there are some fixes and cleanups in the devfreq
  subsystem

  Specifics:

   - New cpufreq driver for Broadcom STB SoCs and a Device Tree binding
     for it (Markus Mayer)

   - Support for ARM Integrator/AP and Integrator/CP in the generic DT
     cpufreq driver and elimination of the old Integrator cpufreq driver
     (Linus Walleij)

   - Support for the zx296718, r8a7743 and r8a7745, Socionext UniPhier,
     and PXA SoCs in the the generic DT cpufreq driver (Baoyou Xie,
     Geert Uytterhoeven, Masahiro Yamada, Robert Jarzmik)

   - cpufreq core fix to eliminate races that may lead to using inactive
     policy objects and related cleanups (Rafael Wysocki)

   - cpufreq schedutil governor update to make it use SCHED_FIFO kernel
     threads (instead of regular workqueues) for doing delayed work (to
     reduce the response latency in some cases) and related cleanups
     (Viresh Kumar)

   - New cpufreq sysfs attribute for resetting statistics (Markus Mayer)

   - cpufreq governors fixes and cleanups (Chen Yu, Stratos Karafotis,
     Viresh Kumar)

   - Support for using generic cpufreq governors in the intel_pstate
     driver (Rafael Wysocki)

   - Support for per-logical-CPU P-state limits and the EPP/EPB (Energy
     Performance Preference/Energy Performance Bias) knobs in the
     intel_pstate driver (Srinivas Pandruvada)

   - New CPU ID for Knights Mill in intel_pstate (Piotr Luc)

   - intel_pstate driver modification to use the P-state selection
     algorithm based on CPU load on platforms with the system profile in
     the ACPI tables set to "mobile" (Srinivas Pandruvada)

   - intel_pstate driver cleanups (Arnd Bergmann, Rafael Wysocki,
     Srinivas Pandruvada)

   - cpufreq powernv driver updates including fast switching support
     (for the schedutil governor), fixes and cleanus (Akshay Adiga,
     Andrew Donnellan, Denis Kirjanov)

   - acpi-cpufreq driver rework to switch it over to the new CPU
     offline/online state machine (Sebastian Andrzej Siewior)

   - Assorted cleanups in cpufreq drivers (Wei Yongjun, Prashanth
     Prakash)

   - Idle injection rework (to make it use the regular idle path instead
     of a home-grown custom one) and related powerclamp thermal driver
     updates (Peter Zijlstra, Jacob Pan, Petr Mladek, Sebastian Andrzej
     Siewior)

   - New CPU IDs for Atom Z34xx and Knights Mill in intel_idle (Andy
     Shevchenko, Piotr Luc)

   - intel_idle driver cleanups and switch over to using the new CPU
     offline/online state machine (Anna-Maria Gleixner, Sebastian
     Andrzej Siewior)

   - cpuidle DT driver update to support suspend-to-idle properly
     (Sudeep Holla)

   - cpuidle core cleanups and misc updates (Daniel Lezcano, Pan Bian,
     Rafael Wysocki)

   - Preliminary support for power domains including CPUs in the generic
     power domains (genpd) framework and related DT bindings (Lina Iyer)

   - Assorted fixes and cleanups in the generic power domains (genpd)
     framework (Colin Ian King, Dan Carpenter, Geert Uytterhoeven)

   - Preliminary support for devices with multiple voltage regulators
     and related fixes and cleanups in the Operating Performance Points
     (OPP) library (Viresh Kumar, Masahiro Yamada, Stephen Boyd)

   - System sleep state selection interface rework to make it easier to
     support suspend-to-idle as the default system suspend method
     (Rafael Wysocki)

   - PM core fixes and cleanups, mostly related to the interactions
     between the system suspend and runtime PM frameworks (Ulf Hansson,
     Sahitya Tummala, Tony Lindgren)

   - Latency tolerance PM QoS framework imorovements (Andrew Lutomirski)

   - New Knights Mill CPU ID for the Intel RAPL power capping driver
     (Piotr Luc)

   - Intel RAPL power capping driver fixes, cleanups and switch over to
     using the new CPU offline/online state machine (Jacob Pan, Thomas
     Gleixner, Sebastian Andrzej Siewior)

   - Fixes and cleanups in the exynos-ppmu, exynos-nocp, rk3399_dmc,
     rockchip-dfi devfreq drivers and the devfreq core (Axel Lin,
     Chanwoo Choi, Javier Martinez Canillas, MyungJoo Ham, Viresh Kumar)

   - Fix for false-positive KASAN warnings during resume from ACPI S3
     (suspend-to-RAM) on x86 (Josh Poimboeuf)

   - Memory map verification during resume from hibernation on x86 to
     ensure a consistent address space layout (Chen Yu)

   - Wakeup sources debugging enhancement (Xing Wei)

   - rockchip-io AVS driver cleanup (Shawn Lin)"

* tag 'pm-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (127 commits)
  devfreq: rk3399_dmc: Don't use OPP structures outside of RCU locks
  devfreq: rk3399_dmc: Remove dangling rcu_read_unlock()
  devfreq: exynos: Don't use OPP structures outside of RCU locks
  Documentation: intel_pstate: Document HWP energy/performance hints
  cpufreq: intel_pstate: Support for energy performance hints with HWP
  cpufreq: intel_pstate: Add locking around HWP requests
  PM / sleep: Print active wakeup sources when blocking on wakeup_count reads
  PM / core: Fix bug in the error handling of async suspend
  PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend
  PM / Domains: Fix compatible for domain idle state
  PM / OPP: Don't WARN on multiple calls to dev_pm_opp_set_regulators()
  PM / OPP: Allow platform specific custom set_opp() callbacks
  PM / OPP: Separate out _generic_set_opp()
  PM / OPP: Add infrastructure to manage multiple regulators
  PM / OPP: Pass struct dev_pm_opp_supply to _set_opp_voltage()
  PM / OPP: Manage supply's voltage/current in a separate structure
  PM / OPP: Don't use OPP structure outside of rcu protected section
  PM / OPP: Reword binding supporting multiple regulators per device
  PM / OPP: Fix incorrect cpu-supply property in binding
  cpuidle: Add a kerneldoc comment to cpuidle_use_deepest_state()
  ..
2016-12-13 10:41:53 -08:00
Linus Torvalds e7aa8c2eb1 These are the documentation changes for 4.10.
It's another busy cycle for the docs tree, as the sphinx conversion
 continues.  Highlights include:
 
  - Further work on PDF output, which remains a bit of a pain but should be
    more solid now.
 
  - Five more DocBook template files converted to Sphinx.  Only 27 to go...
    Lots of plain-text files have also been converted and integrated.
 
  - Images in binary formats have been replaced with more source-friendly
    versions.
 
  - Various bits of organizational work, including the renaming of various
    files discussed at the kernel summit.
 
  - New documentation for the device_link mechanism.
 
 ...and, of course, lots of typo fixes and small updates.
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Merge tag 'docs-4.10' of git://git.lwn.net/linux

Pull documentation update from Jonathan Corbet:
 "These are the documentation changes for 4.10.

  It's another busy cycle for the docs tree, as the sphinx conversion
  continues. Highlights include:

   - Further work on PDF output, which remains a bit of a pain but
     should be more solid now.

   - Five more DocBook template files converted to Sphinx. Only 27 to
     go... Lots of plain-text files have also been converted and
     integrated.

   - Images in binary formats have been replaced with more
     source-friendly versions.

   - Various bits of organizational work, including the renaming of
     various files discussed at the kernel summit.

   - New documentation for the device_link mechanism.

  ... and, of course, lots of typo fixes and small updates"

* tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits)
  dma-buf: Extract dma-buf.rst
  Update Documentation/00-INDEX
  docs: 00-INDEX: document directories/files with no docs
  docs: 00-INDEX: remove non-existing entries
  docs: 00-INDEX: add missing entries for documentation files/dirs
  docs: 00-INDEX: consolidate process/ and admin-guide/ description
  scripts: add a script to check if Documentation/00-INDEX is sane
  Docs: change sh -> awk in REPORTING-BUGS
  Documentation/core-api/device_link: Add initial documentation
  core-api: remove an unexpected unident
  ppc/idle: Add documentation for powersave=off
  Doc: Correct typo, "Introdution" => "Introduction"
  Documentation/atomic_ops.txt: convert to ReST markup
  Documentation/local_ops.txt: convert to ReST markup
  Documentation/assoc_array.txt: convert to ReST markup
  docs-rst: parse-headers.pl: cleanup the documentation
  docs-rst: fix media cleandocs target
  docs-rst: media/Makefile: reorganize the rules
  docs-rst: media: build SVG from graphviz files
  docs-rst: replace bayer.png by a SVG image
  ...
2016-12-12 21:58:13 -08:00
Kevin Peng 20b786eb25 Docs: change sh -> awk in REPORTING-BUGS
scripts/ver_linux has been rewritten as an awk script; update
documentation to reflect this fact.

Signed-off-by: Kevin Peng <kkpengboy@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-12-05 14:18:48 -07:00
Balbir Singh c3cbd075fc ppc/idle: Add documentation for powersave=off
Update kernel-parameters.txt to add Documentation
for powersave=off.

Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-12-01 10:45:16 -07:00
Sanjeev 7d56f0facd Doc: Correct typo, "Introdution" => "Introduction"
This corrects a set of spelling mistakes, probably from an
automated conversion.

Signed-off-by: Sanjeev Gupta <ghane0@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-12-01 10:44:08 -07:00
Jonathan Corbet ca4354543a docs: Fix a PDF build error in bug-bisect.rst
It seems we can't have literal blocks in footnotes, which almost actually
makes some sense.  So just use basic ``monospace`` instead.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-07 18:03:13 -07:00
Jonathan Corbet 63ac0cf937 Merge branch 'sphinx-fixes-for-docs-next' of git://people.freedesktop.org/~jani/drm into test
A set of PDF and other docs related fixes from Jani.
2016-11-07 17:08:33 -07:00
Mauro Carvalho Chehab f226e46087 admin-guide: merge oops-tracing with bug-hunting
Now that oops-tracing.rst has only information about
stack dumps found on OOPS, and bug-hunting.rst has only
information about how to identify the source code line
associated with a stack dump, let's merge them and
improve the information inside it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-07 16:50:33 -07:00
Mauro Carvalho Chehab 337c188dff admin-guide: move tainted kernels info to a separate file
The tainted kernels info is not directly related to
the oops tracing. So, let's move it to a separate file.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-07 16:50:28 -07:00
Mauro Carvalho Chehab c730904b16 doc-rst: admin-guide: move bug bisect to a separate file
Better organize the admin guide documentation by moving the
bug bisect to a separate file.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-07 16:50:23 -07:00
Mauro Carvalho Chehab ab0e44c155 bug-hunting.rst: update info about bug hunting
The document shows a really old procedure for bug hunting that
nobody uses anymore. Remove such section, and update the
remaining documentation to reflect the procedures used
currently.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-11-07 16:50:18 -07:00
Jani Nikula 07c7e30c18 Documentation/admin-guide: split the device list to a separate file
Include the literal device list from a separate file. This helps the pdf
build.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-11-03 12:39:23 +02:00
Jani Nikula e52347bd66 Documentation/admin-guide: split the kernel parameter list to a separate file
Include the literal kernel parameter list from a separate file. This
helps the pdf build.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-11-03 12:39:19 +02:00
Jani Nikula 07a37ba583 Documentation/admin-guide: use code-block with proper language
Now that we don't have automatic syntax highlighting, use the code-block
directive with the explicitly selected language, where appropriate.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-11-03 12:39:00 +02:00
Jonathan Corbet 9d2cccdd6c Merge branch 'doc-tweaks' into docs-next
The creation of the admin and process guides is a great thing, but, without
care, we risk replacing a messy docs directory with a few messy Sphinx
books.  In an attempt to head that off and show what I'm thinking, here's a
set of tweaks that, I think, make the existing Sphinx-formatted docs a bit
more accessible.
2016-10-27 17:47:58 -06:00