Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Introduce show_stack_loglvl(), that eventually will substitute
show_stack().

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: Mark Salter <msalter@redhat.com>
Link: http://lkml.kernel.org/r/20200418201944.482088-12-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Introduce show_stack_loglvl(), that eventually will substitute
show_stack().

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-11-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Add log level argument to dump_backtrace() as a preparation for
introducing show_stack_loglvl().

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-10-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Introduce show_stack_loglvl(), that eventually will substitute
show_stack().

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-9-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Now that c_backtrace() always emits correct loglvl, use it for printing.

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-8-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Add log level argument to dump_backtrace() as a preparation for
introducing show_stack_loglvl().

As a good side-effect __die() now prints not only "Stack:" header with
KERN_EMERG, but the backtrace itself.

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-7-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Add log level argument to unwind_backtrace() as a preparation for
introducing show_stack_loglvl().

As a good side-effect arm_syscall() is now printing errors with the same
log level as the backtrace.

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-6-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Add log level argument to c_backtrace() as a preparation for introducing
show_stack_loglvl().

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200418201944.482088-5-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Introduce show_stack_loglvl(), that eventually will substitute
show_stack().

As a good side-effect header "Stack Trace:" is now printed with the same
log level as the rest of backtrace.

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Link: http://lkml.kernel.org/r/20200418201944.482088-4-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Currently, the log-level of show_stack() depends on a platform
realization.  It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on a platform or
user).

Furthermore, it forces the logic decision from user to an architecture
side.  In result, some users as sysrq/kdb/etc are doing tricks with
temporary rising console_loglevel while printing their messages.  And in
result it not only may print unwanted messages from other CPUs, but also
omit printing at all in the unlucky case where the printk() was deferred.

Introducing log-level parameter and KERN_UNSUPPRESSED [1] seems an easier
approach than introducing more printk buffers.  Also, it will consolidate
printings with headers.

Introduce show_stack_loglvl(), that eventually will substitute
show_stack().

[1]: https://lore.kernel.org/lkml/20190528002412.1625-1-dima@arista.com/T/#uSigned-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Link: http://lkml.kernel.org/r/20200418201944.482088-3-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Patch series "Add log level to show_stack()", v3.

Add log level argument to show_stack().

Done in three stages:
1. Introducing show_stack_loglvl() for every architecture
2. Migrating old users with an explicit log level
3. Renaming show_stack_loglvl() into show_stack()

Justification:

- It's a design mistake to move a business-logic decision into platform
  realization detail.

- I have currently two patches sets that would benefit from this work:
  Removing console_loglevel jumps in sysrq driver [1] Hung task warning
  before panic [2] - suggested by Tetsuo (but he probably didn't realise
  what it would involve).

- While doing (1), (2) the backtraces were adjusted to headers and other
  messages for each situation - so there won't be a situation when the
  backtrace is printed, but the headers are missing because they have
  lesser log level (or the reverse).

- As the result in (2) plays with console_loglevel for kdb are removed.

The least important for upstream, but maybe still worth to note that every
company I've worked in so far had an off-list patch to print backtrace
with the needed log level (but only for the architecture they cared
about).  If you have other ideas how you will benefit from show_stack()
with a log level - please, reply to this cover letter.

See also discussion on v1:
https://lore.kernel.org/linux-riscv/20191106083538.z5nlpuf64cigxigh@pathway.suse.cz/

This patch (of 50):

print_ip_sym() needs to have a log level parameter to comply with other
parts being printed.  Otherwise, half of the expected backtrace would be
printed and other may be missing with some logging level.

The following callee(s) are using now the adjusted log level:
- microblaze/unwind: the same level as headers & userspace unwind.
  Note that pr_debug()'s there are for debugging the unwinder itself.
- nds32/traps: symbol addresses are printed with the same log level
  as backtrace headers.
- lockdep: ip for locking issues is printed with the same log level
  as other part of the warning.
- sched: ip where preemption was disabled is printed as error like
  the rest part of the message.
- ftrace: bug reports are now consistent in the log level being used.
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Ben Segall <bsegall@google.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Will Deacon <will@kernel.org>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Dmitry Safonov <dima@arista.com>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Guo Ren <guoren@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
Link: http://lkml.kernel.org/r/20200418201944.482088-2-dima@arista.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull remoteproc updates from Bjorn Andersson:
 "This introduces device managed versions of functions used to register
  remoteproc devices, add support for remoteproc driver specific
  resource control, enables remoteproc drivers to specify ELF class and
  machine for coredumps. It integrates pm_runtime in the core for
  keeping resources active while the remote is booted and holds a wake
  source while recoverying a remote processor after a firmware crash.

  It refactors the remoteproc device's allocation path to simplify the
  logic, fix a few cleanup bugs and to not clone const strings onto the
  heap. Debugfs code is simplifies using the DEFINE_SHOW_ATTRIBUTE and a
  zero-length array is replaced with flexible-array.

  A new remoteproc driver for the JZ47xx VPU is introduced, the Qualcomm
  SM8250 gains support for audio, compute and sensor remoteprocs and the
  Qualcomm SC7180 modem support is cleaned up and improved.

  The Qualcomm glink subsystem-restart driver is merged into the main
  glink driver, the Qualcomm sysmon driver is extended to properly
  notify remote processors about all other remote processors' state
  transitions"

* tag 'rproc-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc: (43 commits)
  remoteproc: Fix an error code in devm_rproc_alloc()
  MAINTAINERS: Add myself as reviewer for Ingenic rproc driver
  remoteproc: ingenic: Added remoteproc driver
  remoteproc: Add support for runtime PM
  dt-bindings: Document JZ47xx VPU auxiliary processor
  remoteproc: wcss: Fix arguments passed to qcom_add_glink_subdev()
  remoteproc: Fix and restore the parenting hierarchy for vdev
  remoteproc: Fall back to using parent memory pool if no dedicated available
  remoteproc: Replace zero-length array with flexible-array
  remoteproc: wcss: add support for rpmsg communication
  remoteproc: core: Prevent system suspend during remoteproc recovery
  remoteproc: qcom_q6v5_mss: Remove unused q6v5_da_to_va function
  remoteproc: qcom_q6v5_mss: map/unmap mpss segments before/after use
  remoteproc: qcom_q6v5_mss: Drop accesses to MPSS PERPH register space
  dt-bindings: remoteproc: qcom: Replace halt-nav with spare-regs
  remoteproc: qcom: pas: Add SM8250 PAS remoteprocs
  dt-bindings: remoteproc: qcom: pas: Add SM8250 remoteprocs
  remoteproc: qcom_q6v5_mss: Extract mba/mpss from memory-region
  dt-bindings: remoteproc: qcom: Use memory-region to reference memory
  remoteproc: qcom: pas: Add SC7180 Modem support
  ...

Pull rpmsg updates from Bjorn Andersson:
 "This replaces a zero-length array with flexible-array and fixes a typo
  in a comment in the rpmsg core"

* tag 'rpmsg-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
  rpmsg: Replace zero-length array with flexible-array
  rpmsg: fix a comment typo for rpmsg_device_match()

Pull ceph updates from Ilya Dryomov:
 "The highlights are:

   - OSD/MDS latency and caps cache metrics infrastructure for the
     filesytem (Xiubo Li). Currently available through debugfs and will
     be periodically sent to the MDS in the future.

   - support for replica reads (balanced and localized reads) for rbd
     and the filesystem (myself). The default remains to always read
     from primary, users can opt-in with the new crush_location and
     read_from_replica options. Note that reading from replica is safe
     for general use only since Octopus.

   - support for RADOS allocation hint flags (myself). Currently used by
     rbd to propagate the compressible/incompressible hint given with
     the new compression_hint map option and ready for passing on more
     advanced hints, e.g. based on fadvise() from the filesystem.

   - support for efficient cross-quota-realm renames (Luis Henriques)

   - assorted cap handling improvements and cleanups, particularly
     untangling some of the locking (Jeff Layton)"

* tag 'ceph-for-5.8-rc1' of git://github.com/ceph/ceph-client: (29 commits)
  rbd: compression_hint option
  libceph: support for alloc hint flags
  libceph: read_from_replica option
  libceph: support for balanced and localized reads
  libceph: crush_location infrastructure
  libceph: decode CRUSH device/bucket types and names
  libceph: add non-asserting rbtree insertion helper
  ceph: skip checking caps when session reconnecting and releasing reqs
  ceph: make sure mdsc->mutex is nested in s->s_mutex to fix dead lock
  ceph: don't return -ESTALE if there's still an open file
  libceph, rbd: replace zero-length array with flexible-array
  ceph: allow rename operation under different quota realms
  ceph: normalize 'delta' parameter usage in check_quota_exceeded
  ceph: ceph_kick_flushing_caps needs the s_mutex
  ceph: request expedited service on session's last cap flush
  ceph: convert mdsc->cap_dirty to a per-session list
  ceph: reset i_requested_max_size if file write is not wanted
  ceph: throw a warning if we destroy session with mutex still locked
  ceph: fix potential race in ceph_check_caps
  ceph: document what protects i_dirty_item and i_flushing_item
  ...

Pull gfs2 updates from Andreas Gruenbacher:

 - An iopen glock locking scheme rework that speeds up deletes of inodes
   accessed from multiple nodes

 - Various bug fixes and debugging improvements

 - Convert gfs2-glocks.txt to ReST

* tag 'gfs2-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: fix use-after-free on transaction ail lists
  gfs2: new slab for transactions
  gfs2: initialize transaction tr_ailX_lists earlier
  gfs2: Smarter iopen glock waiting
  gfs2: Wake up when setting GLF_DEMOTE
  gfs2: Check inode generation number in delete_work_func
  gfs2: Move inode generation number check into gfs2_inode_lookup
  gfs2: Minor gfs2_lookup_by_inum cleanup
  gfs2: Try harder to delete inodes locally
  gfs2: Give up the iopen glock on contention
  gfs2: Turn gl_delete into a delayed work
  gfs2: Keep track of deleted inode generations in LVBs
  gfs2: Allow ASPACE glocks to also have an lvb
  gfs2: instrumentation wrt log_flush stuck
  gfs2: introduce new gfs2_glock_assert_withdraw
  gfs2: print mapping->nrpages in glock dump for address space glocks
  gfs2: Only do glock put in gfs2_create_inode for free inodes
  gfs2: Allow lock_nolock mount to specify jid=X
  gfs2: Don't ignore inode write errors during inode_go_sync
  docs: filesystems: convert gfs2-glocks.txt to ReST

Pull s390 updates from Vasily Gorbik:

 - Add support for multi-function devices in pci code.

 - Enable PF-VF linking for architectures using the pdev->no_vf_scan
   flag (currently just s390).

 - Add reipl from NVMe support.

 - Get rid of critical section cleanup in entry.S.

 - Refactor PNSO CHSC (perform network subchannel operation) in cio and
   qeth.

 - QDIO interrupts and error handling fixes and improvements, more
   refactoring changes.

 - Align ioremap() with generic code.

 - Accept requests without the prefetch bit set in vfio-ccw.

 - Enable path handling via two new regions in vfio-ccw.

 - Other small fixes and improvements all over the code.

* tag 's390-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (52 commits)
  vfio-ccw: make vfio_ccw_regops variables declarations static
  vfio-ccw: Add trace for CRW event
  vfio-ccw: Wire up the CRW irq and CRW region
  vfio-ccw: Introduce a new CRW region
  vfio-ccw: Refactor IRQ handlers
  vfio-ccw: Introduce a new schib region
  vfio-ccw: Refactor the unregister of the async regions
  vfio-ccw: Register a chp_event callback for vfio-ccw
  vfio-ccw: Introduce new helper functions to free/destroy regions
  vfio-ccw: document possible errors
  vfio-ccw: Enable transparent CCW IPL from DASD
  s390/pci: Log new handle in clp_disable_fh()
  s390/cio, s390/qeth: cleanup PNSO CHSC
  s390/qdio: remove q->first_to_kick
  s390/qdio: fix up qdio_start_irq() kerneldoc
  s390: remove critical section cleanup from entry.S
  s390: add machine check SIGP
  s390/pci: ioremap() align with generic code
  s390/ap: introduce new ap function ap_get_qdev()
  Documentation/s390: Update / remove developerWorks web links
  ...

Pull iommu updates from Joerg Roedel:
 "A big part of this is a change in how devices get connected to IOMMUs
  in the core code. It contains the change from the old add_device() /
  remove_device() to the new probe_device() / release_device()
  call-backs.

  As a result functionality that was previously in the IOMMU drivers has
  been moved to the IOMMU core code, including IOMMU group allocation
  for each device. The reason for this change was to get more robust
  allocation of default domains for the iommu groups.

  A couple of fixes were necessary after this was merged into the IOMMU
  tree, but there are no known bugs left. The last fix is applied on-top
  of the merge commit for the topic branches.

  Other than that change, we have:

   - Removal of the driver private domain handling in the Intel VT-d
     driver. This was fragile code and I am glad it is gone now.

   - More Intel VT-d updates from Lu Baolu:
      - Nested Shared Virtual Addressing (SVA) support to the Intel VT-d
        driver
      - Replacement of the Intel SVM interfaces to the common IOMMU SVA
        API
      - SVA Page Request draining support

   - ARM-SMMU Updates from Will:
      - Avoid mapping reserved MMIO space on SMMUv3, so that it can be
        claimed by the PMU driver
      - Use xarray to manage ASIDs on SMMUv3
      - Reword confusing shutdown message
      - DT compatible string updates
      - Allow implementations to override the default domain type

   - A new IOMMU driver for the Allwinner Sun50i platform

   - Support for ATS gets disabled for untrusted devices (like
     Thunderbolt devices). This includes a PCI patch, acked by Bjorn.

   - Some cleanups to the AMD IOMMU driver to make more use of IOMMU
     core features.

   - Unification of some printk formats in the Intel and AMD IOMMU
     drivers and in the IOVA code.

   - Updates for DT bindings

   - A number of smaller fixes and cleanups.

* tag 'iommu-updates-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (109 commits)
  iommu: Check for deferred attach in iommu_group_do_dma_attach()
  iommu/amd: Remove redundant devid checks
  iommu/amd: Store dev_data as device iommu private data
  iommu/amd: Merge private header files
  iommu/amd: Remove PD_DMA_OPS_MASK
  iommu/amd: Consolidate domain allocation/freeing
  iommu/amd: Free page-table in protection_domain_free()
  iommu/amd: Allocate page-table in protection_domain_init()
  iommu/amd: Let free_pagetable() not rely on domain->pt_root
  iommu/amd: Unexport get_dev_data()
  iommu/vt-d: Fix compile warning
  iommu/vt-d: Remove real DMA lookup in find_domain
  iommu/vt-d: Allocate domain info for real DMA sub-devices
  iommu/vt-d: Only clear real DMA device's context entries
  iommu: Remove iommu_sva_ops::mm_exit()
  uacce: Remove mm_exit() op
  iommu/sun50i: Constify sun50i_iommu_ops
  iommu/hyper-v: Constify hyperv_ir_domain_ops
  iommu/vt-d: Use pci_ats_supported()
  iommu/arm-smmu-v3: Use pci_ats_supported()
  ...

Pull drm msm updates from Dave Airlie:
 "This tree has been in next for a couple of weeks, but Rob missed an
  arm32 build issue, so I was awaiting the tree with a patch reverted.

   - new gpu support: a405, a640, a650

   - dpu: color processing support

   - mdp5: support for msm8x36 (the thing with a405)

   - some prep work for per-context pagetables (ie the part that does
     not depend on in-flight iommu patches)

   - last but not least, UABI update for submit ioctl to support syncobj
     (from Bas)"

* tag 'drm-next-msm-5.8-2020-06-08' of git://anongit.freedesktop.org/drm/drm: (30 commits)
  Revert "drm/msm/dpu: add support for clk and bw scaling for display"
  drm/msm/a6xx: skip HFI set freq if GMU is powered down
  drm/msm: Update the MMU helper function APIs
  drm/msm: Refactor address space initialization
  drm/msm: Attach the IOMMU device during initialization
  drm/msm/dpu: dpu_setup_dspp_pcc() can be static
  drm/msm/a6xx: a6xx_hfi_send_start() can be static
  drm/msm/a4xx: add a405_registers for a405 device
  drm/msm/a4xx: add adreno a405 support
  drm/msm/a6xx: update a6xx_hw_init for A640 and A650
  drm/msm/a6xx: enable GMU log
  drm/msm/a6xx: update pdc/rscc GMU registers for A640/A650
  drm/msm/a6xx: A640/A650 GMU firmware path
  drm/msm/a6xx: HFI v2 for A640 and A650
  drm/msm/a6xx: add A640/A650 to gpulist
  drm/msm/a6xx: use msm_gem for GMU memory objects
  drm/msm: add internal MSM_BO_MAP_PRIV flag
  drm/msm: add msm_gem_get_and_pin_iova_range
  drm/msm: Check for powered down HW in the devfreq callbacks
  drm/msm/dpu: update bandwidth threshold check
  ...

Pull drm fixes from Dave Airlie:
 "These are the fixes from last week for the stuff merged in the merge
  window. It got a bunch of nouveau fixes for HDA audio on some new
  GPUs, some i915 and some amdpgu fixes.

  i915:
   - gvt: Fix one clang warning on debug only function
   - Use ARRAY_SIZE for coccicheck warning
   - Use after free fix for display global state.
   - Whitelisting context-local timestamp on Gen9 and two scheduler
     fixes with deps (Cc: stable)
   - Removal of write flag from sysfs files where ineffective

  nouveau:
   - HDMI/DP audio HDA fixes
   - display hang fix for Volta/Turing
   - GK20A regression fix.

  amdgpu:
   - Prevent hwmon accesses while GPU is in reset
   - CTF interrupt fix
   - Backlight fix for renoir
   - Fix for display sync groups
   - Display bandwidth validation workaround"

* tag 'drm-next-2020-06-08' of git://anongit.freedesktop.org/drm/drm: (28 commits)
  drm/nouveau/kms/nv50-: clear SW state of disabled windows harder
  drm/nouveau: gr/gk20a: Use firmware version 0
  drm/nouveau/disp/gm200-: detect and potentially disable HDA support on some SORs
  drm/nouveau/disp/gp100: split SOR implementation from gm200
  drm/nouveau/disp: modify OR allocation policy to account for HDA requirements
  drm/nouveau/disp: split part of OR allocation logic into a function
  drm/nouveau/disp: provide hint to OR allocation about HDA requirements
  drm/amd/display: Revalidate bandwidth before commiting DC updates
  drm/amdgpu/display: use blanked rather than plane state for sync groups
  drm/i915/params: fix i915.fake_lmem_start module param sysfs permissions
  drm/i915/params: don't expose inject_probe_failure in debugfs
  drm/i915: Whitelist context-local timestamp in the gen9 cmdparser
  drm/i915: Fix global state use-after-frees with a refcount
  drm/i915: Check for awaits on still currently executing requests
  drm/i915/gt: Do not schedule normal requests immediately along virtual
  drm/i915: Reorder await_execution before await_request
  drm/nouveau/kms/gt215-: fix race with audio driver runpm
  drm/nouveau/disp/gm200-: fix NV_PDISP_SOR_HDMI2_CTRL(n) selection
  Revert "drm/amd/display: disable dcn20 abm feature for bring up"
  drm/amd/powerplay: ack the SMUToHost interrupt on receive V2
  ...

Merge still more updates from Andrew Morton:
 "Various trees. Mainly those parts of MM whose linux-next dependents
  are now merged. I'm still sitting on ~160 patches which await merges
  from -next.

  Subsystems affected by this patch series: mm/proc, ipc, dynamic-debug,
  panic, lib, sysctl, mm/gup, mm/pagemap"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (52 commits)
  doc: cgroup: update note about conditions when oom killer is invoked
  module: move the set_fs hack for flush_icache_range to m68k
  nommu: use flush_icache_user_range in brk and mmap
  binfmt_flat: use flush_icache_user_range
  exec: use flush_icache_user_range in read_code
  exec: only build read_code when needed
  m68k: implement flush_icache_user_range
  arm: rename flush_cache_user_range to flush_icache_user_range
  xtensa: implement flush_icache_user_range
  sh: implement flush_icache_user_range
  asm-generic: add a flush_icache_user_range stub
  mm: rename flush_icache_user_range to flush_icache_user_page
  arm,sparc,unicore32: remove flush_icache_user_range
  riscv: use asm-generic/cacheflush.h
  powerpc: use asm-generic/cacheflush.h
  openrisc: use asm-generic/cacheflush.h
  m68knommu: use asm-generic/cacheflush.h
  microblaze: use asm-generic/cacheflush.h
  ia64: use asm-generic/cacheflush.h
  hexagon: use asm-generic/cacheflush.h
  ...

Starting from v4.19 commit 29ef680a ("memcg, oom: move out_of_memory
back to the charge path") cgroup oom killer is no longer invoked only
from page faults.  Now it implements the same semantics as global OOM
killer: allocation context invokes OOM killer and keeps retrying until
success.

[akpm@linux-foundation.org: fixes per Randy]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: http://lkml.kernel.org/r/158894738928.208854.5244393925922074518.stgit@buzzSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

flush_icache_range generally operates on kernel addresses, but for some
reason m68k needed a set_fs override.  Move that into the m68k code
insted of keeping it in the module loader.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Jessica Yu <jeyu@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Link: http://lkml.kernel.org/r/20200515143646.3857579-30-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

These obviously operate on user addresses.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-29-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

load_flat_file works on user addresses.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Greg Ungerer <gerg@linux-m68k.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/20200515143646.3857579-28-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

read_code operates on user addresses.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/20200515143646.3857579-27-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Only build read_code when binary formats that use it are built into the
kernel.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/20200515143646.3857579-26-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Rename the current flush_icache_range to flush_icache_user_range as per
commit ae92ef8a ("PATCH] flush icache in correct context") there
seems to be an assumption that it operates on user addresses.  Add a
flush_icache_range around it that for now is a no-op.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-25-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

flush_icache_user_range will be the name for a generic primitive.  Move
the arm name so that arm already has an implementation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Link: http://lkml.kernel.org/r/20200515143646.3857579-24-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The Xtensa implementation of flush_icache_range seems to be able to cope
with user addresses.  Just define flush_icache_user_range to
flush_icache_range.

[jcmvbkbc@gmail.com: fix flush_icache_user_range in noMMU configs]
  Link: http://lkml.kernel.org/r/20200525221556.4270-1-jcmvbkbc@gmail.comSigned-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Link: http://lkml.kernel.org/r/20200515143646.3857579-23-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The SuperH implementation of flush_icache_range seems to be able to cope
with user addresses.  Just define flush_icache_user_range to
flush_icache_range.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-22-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Define flush_icache_user_range to flush_icache_range unless the
architecture provides its own implementation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Link: http://lkml.kernel.org/r/20200515143646.3857579-21-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The function currently known as flush_icache_user_range only operates on
a single page.  Rename it to flush_icache_user_page as we'll need the
name flush_icache_user_range for something else soon.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-20-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

flush_icache_user_range is only used by <asm-generic/cacheflush.h>, so
remove it from the architectures that implement it, but don't use
<asm-generic/cacheflush.h>.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Link: http://lkml.kernel.org/r/20200515143646.3857579-19-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

RISC-V needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.

Also remove the pointless __KERNEL__ ifdef while we're at it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Link: http://lkml.kernel.org/r/20200515143646.3857579-18-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Power needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.

Also remove the pointless __KERNEL__ ifdef while we're at it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Link: http://lkml.kernel.org/r/20200515143646.3857579-17-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

OpenRISC needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Link: http://lkml.kernel.org/r/20200515143646.3857579-16-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

m68knommu needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Greg Ungerer <gerg@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-15-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Microblaze needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Simek <monstr@monstr.eu>
Link: http://lkml.kernel.org/r/20200515143646.3857579-14-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

IA64 needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/20200515143646.3857579-13-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Hexagon needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Brian Cain <bcain@codeaurora.org>
Link: http://lkml.kernel.org/r/20200515143646.3857579-12-hch@lst.deSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>