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Commit Graph

980294 Commits

Author SHA1 Message Date
Ma, Jianpeng
ab7d7798da bitmap: remove unused function declaration
Link: https://lkml.kernel.org/r/BN7PR11MB26097166B6B46387D8A1ABA4FDE30@BN7PR11MB2609.namprd11.prod.outlook.com
Fixes: 2afe27c718 ("lib/bitmap.c: bitmap_[empty,full]: remove code duplication")
Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
Acked-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:16 -08:00
Andy Shevchenko
0bb8677955 include/linux/bitmap.h: convert bitmap_empty() / bitmap_full() to return boolean
There is no need to return int type out of boolean expression.

Link: https://lkml.kernel.org/r/20201027180936.20806-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Hui Su
35189b8ff1 kernel/acct.c: use #elif instead of #end and #elif
Cleanup: use #elif instead of #end and #elif.

Link: https://lkml.kernel.org/r/20201015150736.GA91603@rlk
Signed-off-by: Hui Su <sh_def@163.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Andy Shevchenko
aa6159ab99 kernel.h: split out mathematical helpers
kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out
mathematical helpers.

At the same time convert users in header and lib folder to use new
header.  Though for time being include new header back to kernel.h to
avoid twisted indirected includes for existing users.

[sfr@canb.auug.org.au: fix powerpc build]
  Link: https://lkml.kernel.org/r/20201029150809.13059608@canb.auug.org.au

Link: https://lkml.kernel.org/r/20201028173212.41768-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Jeff Layton <jlayton@kernel.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Christophe Leroy
0a571b085f asm-generic: force inlining of get_order() to work around gcc10 poor decision
When building mpc885_ads_defconfig with gcc 10.1,
the function get_order() appears 50 times in vmlinux:

  [linux]# ppc-linux-objdump -x vmlinux | grep get_order | wc -l
  50

  [linux]# size vmlinux
     text	   data	    bss	    dec	    hex	filename
  3842620	 675624	 135160	4653404	 47015c	vmlinux

In the old days, marking a function 'static inline' was forcing GCC to
inline, but since commit ac7c3e4ff4 ("compiler: enable
CONFIG_OPTIMIZE_INLINING forcibly") GCC may decide to not inline a
function.

It looks like GCC 10 is taking poor decisions on this.

get_order() compiles into the following tiny function, occupying 20
bytes of text.

  0000007c <get_order>:
    7c:   38 63 ff ff     addi    r3,r3,-1
    80:   54 63 a3 3e     rlwinm  r3,r3,20,12,31
    84:   7c 63 00 34     cntlzw  r3,r3
    88:   20 63 00 20     subfic  r3,r3,32
    8c:   4e 80 00 20     blr

By forcing get_order() to be __always_inline, the size of text is
reduced by 1940 bytes, that is almost twice the space occupied by
50 times get_order()

  [linux-powerpc]# size vmlinux
     text	   data	    bss	    dec	    hex	filename
  3840680	 675588	 135176	4651444	 46f9b4	vmlinux

Link: https://lkml.kernel.org/r/96c6172d619c51acc5c1c4884b80785c59af4102.1602949927.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Hui Su
a9389683fa fs/proc: make pde_get() return nothing
We don't need pde_get()'s return value, so make pde_get() return nothing

Link: https://lkml.kernel.org/r/20201211061944.GA2387571@rlk
Signed-off-by: Hui Su <sh_def@163.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Alexey Dobriyan
c6c75deda8 proc: fix lookup in /proc/net subdirectories after setns(2)
Commit 1fde6f21d9 ("proc: fix /proc/net/* after setns(2)") only forced
revalidation of regular files under /proc/net/

However, /proc/net/ is unusual in the sense of /proc/net/foo handlers
take netns pointer from parent directory which is old netns.

Steps to reproduce:

	(void)open("/proc/net/sctp/snmp", O_RDONLY);
	unshare(CLONE_NEWNET);

	int fd = open("/proc/net/sctp/snmp", O_RDONLY);
	read(fd, &c, 1);

Read will read wrong data from original netns.

Patch forces lookup on every directory under /proc/net .

Link: https://lkml.kernel.org/r/20201205160916.GA109739@localhost.localdomain
Fixes: 1da4d377f9 ("proc: revalidate misc dentries")
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reported-by: "Rantala, Tommi T. (Nokia - FI/Espoo)" <tommi.t.rantala@nokia.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Anand K Mistry
fe71988834 proc: provide details on indirect branch speculation
Similar to speculation store bypass, show information about the indirect
branch speculation mode of a task in /proc/$pid/status.

For testing/benchmarking, I needed to see whether IB (Indirect Branch)
speculation (see Spectre-v2) is enabled on a task, to see whether an
IBPB instruction should be executed on an address space switch.
Unfortunately, this information isn't available anywhere else and
currently the only way to get it is to hack the kernel to expose it
(like this change).  It also helped expose a bug with conditional IB
speculation on certain CPUs.

Another place this could be useful is to audit the system when using
sanboxing.  With this change, I can confirm that seccomp-enabled
process have IB speculation force disabled as expected when the kernel
command line parameter `spectre_v2_user=seccomp`.

Since there's already a 'Speculation_Store_Bypass' field, I used that
as precedent for adding this one.

[amistry@google.com: remove underscores from field name to workaround documentation issue]
  Link: https://lkml.kernel.org/r/20201106131015.v2.1.I7782b0cedb705384a634cfd8898eb7523562da99@changeid

Link: https://lkml.kernel.org/r/20201030172731.1.I7782b0cedb705384a634cfd8898eb7523562da99@changeid
Signed-off-by: Anand K Mistry <amistry@google.com>
Cc: Anthony Steinhauser <asteinhauser@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Anand K Mistry <amistry@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alexey Gladkov <gladkov.alexey@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: NeilBrown <neilb@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Randy Dunlap
d2928e8550 procfs: delete duplicated words + other fixes
Delete repeated words in fs/proc/.
{the, which}
where "which which" was changed to "with which".

Link: https://lkml.kernel.org/r/20201028191525.13413-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Thomas Gleixner
4083a281e3 alpha: replace bogus in_interrupt()
in_interrupt() is true for a variety of things including bottom half
disabled regions.  Deducing hard interrupt context from it is dubious at
best.

Use in_irq() which is true if called in hard interrupt context.  Otherwise
calling irq_exit() would do more harm than good.

Link: https://lkml.kernel.org/r/20201113135832.2202833-1-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Serge Belyshev <belyshev@depni.sinp.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Laurent Dufour
7c33023aad mm/memory_hotplug: quieting offline operation
On PowerPC, when dymically removing memory from a system we can see in the
console a lot of messages like this:

[  186.575389] Offlined Pages 4096

This message is displayed on each LMB (256MB) removed, which means that we
removing 1TB of memory, this message is displayed 4096 times.

Moving it to DEBUG to not flood the console.

Link: https://lkml.kernel.org/r/20201211150157.91399-1-ldufour@linux.ibm.com
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Nathan Lynch <nathanl@linux.ibm.com>
Cc: Scott Cheloha <cheloha@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Zhaoyang Huang
b50da6e9f4 mm: fix a race on nr_swap_pages
The scenario on which "Free swap = -4kB" happens in my system, which is caused
by several get_swap_pages racing with each other and show_swap_cache_info
happens simutaniously. No need to add a lock on get_swap_page_of_type as we
remove "Presub/PosAdd" here.

ProcessA			ProcessB			ProcessC
ngoals = 1			ngoals = 1
avail = nr_swap_pages(1)	avail = nr_swap_pages(1)
nr_swap_pages(1) -= ngoals
				nr_swap_pages(0) -= ngoals
								nr_swap_pages = -1

Link: https://lkml.kernel.org/r/1607050340-4535-1-git-send-email-zhaoyang.huang@unisoc.com
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 22:46:15 -08:00
Linus Torvalds
d01e7f10da Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull exec-update-lock update from Eric Biederman:
 "The key point of this is to transform exec_update_mutex into a
  rw_semaphore so readers can be separated from writers.

  This makes it easier to understand what the holders of the lock are
  doing, and makes it harder to contend or deadlock on the lock.

  The real deadlock fix wound up in perf_event_open"

* 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  exec: Transform exec_update_mutex into a rw_semaphore
2020-12-15 19:36:48 -08:00
Linus Torvalds
faf145d6f3 Merge branch 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull execve updates from Eric Biederman:
 "This set of changes ultimately fixes the interaction of posix file
  lock and exec. Fundamentally most of the change is just moving where
  unshare_files is called during exec, and tweaking the users of
  files_struct so that the count of files_struct is not unnecessarily
  played with.

  Along the way fcheck and related helpers were renamed to more
  accurately reflect what they do.

  There were also many other small changes that fell out, as this is the
  first time in a long time much of this code has been touched.

  Benchmarks haven't turned up any practical issues but Al Viro has
  observed a possibility for a lot of pounding on task_lock. So I have
  some changes in progress to convert put_files_struct to always rcu
  free files_struct. That wasn't ready for the merge window so that will
  have to wait until next time"

* 'exec-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (27 commits)
  exec: Move io_uring_task_cancel after the point of no return
  coredump: Document coredump code exclusively used by cell spufs
  file: Remove get_files_struct
  file: Rename __close_fd_get_file close_fd_get_file
  file: Replace ksys_close with close_fd
  file: Rename __close_fd to close_fd and remove the files parameter
  file: Merge __alloc_fd into alloc_fd
  file: In f_dupfd read RLIMIT_NOFILE once.
  file: Merge __fd_install into fd_install
  proc/fd: In fdinfo seq_show don't use get_files_struct
  bpf/task_iter: In task_file_seq_get_next use task_lookup_next_fd_rcu
  proc/fd: In proc_readfd_common use task_lookup_next_fd_rcu
  file: Implement task_lookup_next_fd_rcu
  kcmp: In get_file_raw_ptr use task_lookup_fd_rcu
  proc/fd: In tid_fd_mode use task_lookup_fd_rcu
  file: Implement task_lookup_fd_rcu
  file: Rename fcheck lookup_fd_rcu
  file: Replace fcheck_files with files_lookup_fd_rcu
  file: Factor files_lookup_fd_locked out of fcheck_files
  file: Rename __fcheck_files to files_lookup_fd_raw
  ...
2020-12-15 19:29:43 -08:00
Linus Torvalds
6febd8bef3 Merge branch 'signal-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull signal cleanup from Eric Biederman:
 "Remove a never used HP-UX compatibility from parisc headers and
  consolidating the SA_* flags definitions into a generic header as much
  as possible.

  We only have 32 SA_* flag bits total, so we need to be careful. But as
  this is the first addition in a decade or so I think we are fine for
  the forseeable future"

* 'signal-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  signal/parisc: Remove parisc specific definition of __ARCH_UAPI_SA_FLAGS
2020-12-15 19:14:27 -08:00
Linus Torvalds
345d4ab5e0 close-range-openat2-v5.11
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Merge tag 'close-range-openat2-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux

Pull close_range/openat2 updates from Christian Brauner:
 "This contains a fix for openat2() to make RESOLVE_BENEATH and
  RESOLVE_IN_ROOT mutually exclusive. It doesn't make sense to specify
  both at the same time. The openat2() selftests have been extended to
  verify that these two flags can't be specified together.

  This also adds the CLOSE_RANGE_CLOEXEC flag to close_range() which
  allows to mark a range of file descriptors as close-on-exec without
  actually closing them.

  This is useful in general but the use-case that triggered the patch is
  installing a seccomp profile in the calling task before exec. If the
  seccomp profile wants to block the close_range() syscall it obviously
  can't use it to close all fds before exec. If it calls close_range()
  before installing the seccomp profile it needs to take care not to
  close fds that it will still need before the exec meaning it would
  have to call close_range() multiple times on different ranges and then
  still fall back to closing fds one by one right before the exec.

  CLOSE_RANGE_CLOEXEC allows to solve this problem relying on the exec
  codepath to get rid of the unwanted fds. The close_range() tests have
  been expanded to verify that CLOSE_RANGE_CLOEXEC works"

* tag 'close-range-openat2-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  selftests: core: add tests for CLOSE_RANGE_CLOEXEC
  fs, close_range: add flag CLOSE_RANGE_CLOEXEC
  selftests: openat2: add RESOLVE_ conflict test
  openat2: reject RESOLVE_BENEATH|RESOLVE_IN_ROOT
2020-12-15 19:11:47 -08:00
Linus Torvalds
37373d9c37 Merge branch 'regset.followup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull regset updates from Al Viro:
 "Dead code removal, mostly.

  The only exception is a bit of cleanups on itanic (getting rid of
  redundant stack unwinds - each access_uarea() call does it and we call
  that 7 times in a row in ptrace_[sg]etregs(), *after* having done it
  ourselves in the caller; location where the user registers have been
  spilled won't change under us, and we can bloody well just call
  access_elf_reg() directly, giving it the unw_frame_info we'd
  calculated for our own purposes)"

* 'regset.followup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  c6x: kill ELF_CORE_COPY_FPREGS
  whack-a-mole: USE_ELF_CORE_DUMP
  [ia64] ptrace_[sg]etregs(): use access_elf_reg() instead of access_uarea()
  [ia64] missed cleanups from switch to regset coredumps
  arm: kill dump_task_regs()
2020-12-15 19:09:44 -08:00
Linus Torvalds
1a825a6a0e Merge branch 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull epoll updates from Al Viro:
 "Deal with epoll loop check/removal races sanely (among other things).

  The solution merged last cycle (pinning a bunch of struct file
  instances) had been forced by the wrong data structures; untangling
  that takes a bunch of preparations, but it's worth doing - control
  flow in there is ridiculously overcomplicated. Memory footprint has
  also gone down, while we are at it.

  This is not all I want to do in the area, but since I didn't get
  around to posting the followups they'll have to wait for the next
  cycle"

* 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (27 commits)
  epoll: take epitem list out of struct file
  epoll: massage the check list insertion
  lift rcu_read_lock() into reverse_path_check()
  convert ->f_ep_links/->fllink to hlist
  ep_insert(): move creation of wakeup source past the fl_ep_links insertion
  fold ep_read_events_proc() into the only caller
  take the common part of ep_eventpoll_poll() and ep_item_poll() into helper
  ep_insert(): we only need tep->mtx around the insertion itself
  ep_insert(): don't open-code ep_remove() on failure exits
  lift locking/unlocking ep->mtx out of ep_{start,done}_scan()
  ep_send_events_proc(): fold into the caller
  lift the calls of ep_send_events_proc() into the callers
  lift the calls of ep_read_events_proc() into the callers
  ep_scan_ready_list(): prepare to splitup
  ep_loop_check_proc(): saner calling conventions
  get rid of ep_push_nested()
  ep_loop_check_proc(): lift pushing the cookie into callers
  clean reverse_path_check_proc() a bit
  reverse_path_check_proc(): don't bother with cookies
  reverse_path_check_proc(): sane arguments
  ...
2020-12-15 19:01:08 -08:00
Linus Torvalds
e88bd82698 Changes since last update:
- get rid of magical page->mapping type marks;
 
  - switch to inplace I/O under low memory scenario;
 
  - return the correct block number for bmap();
 
  - some minor cleanups.
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Merge tag 'erofs-for-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

Pull erofs updates from Gao Xiang:
 "This cycle we got rid of magical page->mapping type marks for
  temporary pages which had some concern before, now such usage is
  replaced with specific page->private.

  Also switch to inplace I/O instead of allocating extra cached pages to
  avoid direct reclaim under low memory scenario.

  There are some bmap bugfix and minor cleanups as well"

* tag 'erofs-for-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: avoid using generic_block_bmap
  erofs: force inplace I/O under low memory scenario
  erofs: simplify try_to_claim_pcluster()
  erofs: insert to managed cache after adding to pcl
  erofs: get rid of magical Z_EROFS_MAPPING_STAGING
  erofs: remove a void EROFS_VERSION macro set in Makefile
2020-12-15 18:58:27 -08:00
Linus Torvalds
1a50ede2b3 Highlights:
- Improve support for re-exporting NFS mounts
 - Replace NFSv4 XDR decoding C macros with xdr_stream helpers
 - Support for multiple RPC/RDMA chunks per RPC transaction
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Merge tag 'nfsd-5.11' of git://git.linux-nfs.org/projects/cel/cel-2.6

Pull nfsd updates from Chuck Lever:
 "Several substantial changes this time around:

   - Previously, exporting an NFS mount via NFSD was considered to be an
     unsupported feature. With v5.11, the community has attempted to
     make re-exporting a first-class feature of NFSD.

     This would enable the Linux in-kernel NFS server to be used as an
     intermediate cache for a remotely-located primary NFS server, for
     example, even with other NFS server implementations, like a NetApp
     filer, as the primary.

   - A short series of patches brings support for multiple RPC/RDMA data
     chunks per RPC transaction to the Linux NFS server's RPC/RDMA
     transport implementation.

     This is a part of the RPC/RDMA spec that the other premiere
     NFS/RDMA implementation (Solaris) has had for a very long time, and
     completes the implementation of RPC/RDMA version 1 in the Linux
     kernel's NFS server.

   - Long ago, NFSv4 support was introduced to NFSD using a series of C
     macros that hid dprintk's and goto's. Over time, the kernel's XDR
     implementation has been greatly improved, but these C macros have
     remained and become fallow. A series of patches in this pull
     request completely replaces those macros with the use of current
     kernel XDR infrastructure. Benefits include:

       - More robust input sanitization in NFSD's NFSv4 XDR decoders.

       - Make it easier to use common kernel library functions that use
         XDR stream APIs (for example, GSS-API).

       - Align the structure of the source code with the RFCs so it is
         easier to learn, verify, and maintain our XDR implementation.

       - Removal of more than a hundred hidden dprintk() call sites.

       - Removal of some explicit manipulation of pages to help make the
         eventual transition to xdr->bvec smoother.

   - On top of several related fixes in 5.10-rc, there are a few more
     fixes to get the Linux NFSD implementation of NFSv4.2 inter-server
     copy up to speed.

  And as usual, there is a pinch of seasoning in the form of a
  collection of unrelated minor bug fixes and clean-ups.

  Many thanks to all who contributed this time around!"

* tag 'nfsd-5.11' of git://git.linux-nfs.org/projects/cel/cel-2.6: (131 commits)
  nfsd: Record NFSv4 pre/post-op attributes as non-atomic
  nfsd: Set PF_LOCAL_THROTTLE on local filesystems only
  nfsd: Fix up nfsd to ensure that timeout errors don't result in ESTALE
  exportfs: Add a function to return the raw output from fh_to_dentry()
  nfsd: close cached files prior to a REMOVE or RENAME that would replace target
  nfsd: allow filesystems to opt out of subtree checking
  nfsd: add a new EXPORT_OP_NOWCC flag to struct export_operations
  Revert "nfsd4: support change_attr_type attribute"
  nfsd4: don't query change attribute in v2/v3 case
  nfsd: minor nfsd4_change_attribute cleanup
  nfsd: simplify nfsd4_change_info
  nfsd: only call inode_query_iversion in the I_VERSION case
  nfs_common: need lock during iterate through the list
  NFSD: Fix 5 seconds delay when doing inter server copy
  NFSD: Fix sparse warning in nfs4proc.c
  SUNRPC: Remove XDRBUF_SPARSE_PAGES flag in gss_proxy upcall
  sunrpc: clean-up cache downcall
  nfsd: Fix message level for normal termination
  NFSD: Remove macros that are no longer used
  NFSD: Replace READ* macros in nfsd4_decode_compound()
  ...
2020-12-15 18:52:30 -08:00
Linus Torvalds
9867cb1fd5 A few jfs fixes
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Merge tag 'jfs-5.11' of git://github.com/kleikamp/linux-shaggy

Pull jfs updates from David Kleikamp:
 "A few jfs fixes"

* tag 'jfs-5.11' of git://github.com/kleikamp/linux-shaggy:
  jfs: Fix array index bounds check in dbAdjTree
  jfs: Fix memleak in dbAdjCtl
  jfs: delete duplicated words + other fixes
2020-12-15 18:49:45 -08:00
Linus Torvalds
8a7a4301dd dlm for 5.11
This set includes more low level communication layer cleanups.
 The main change is the listening socket is no longer handled as
 a special case of node connection sockets.  There is one small
 fix for checking the number of local connections.
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Merge tag 'dlm-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This set includes more low level communication layer cleanups.

  The main change is the listening socket is no longer handled as a
  special case of node connection sockets. There is one small fix for
  checking the number of local connections"

* tag 'dlm-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  fs: dlm: check on existing node address
  fs: dlm: constify addr_compare
  fs: dlm: fix check for multi-homed hosts
  fs: dlm: listen socket out of connection hash
  fs: dlm: refactor sctp sock parameter
  fs: dlm: move shutdown action to node creation
  fs: dlm: move connect callback in node creation
  fs: dlm: add helper for init connection
  fs: dlm: handle non blocked connect event
  fs: dlm: flush othercon at close
  fs: dlm: add get buffer error handling
  fs: dlm: define max send buffer
  fs: dlm: fix proper srcu api call
2020-12-15 18:47:04 -08:00
Linus Torvalds
f1ee3b8829 for-5.11-tag
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Merge tag 'for-5.11-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "We have a mix of all kinds of changes, feature updates, core stuff,
  performance improvements and lots of cleanups and preparatory changes.

  User visible:

   - export filesystem generation in sysfs

   - new features for mount option 'rescue':
       - what's currently supported is exported in sysfs
       - 'ignorebadroots'/'ibadroots' - continue even if some essential
         tree roots are not usable (extent, uuid, data reloc, device,
         csum, free space)
       - 'ignoredatacsums'/'idatacsums' - skip checksum verification on
         data
       - 'all' - now enables 'ignorebadroots' + 'ignoredatacsums' +
         'nologreplay'

   - export read mirror policy settings to sysfs, new policies will be
     added in the future

   - remove inode number cache feature (mount -o inode_cache), obsoleted
     in 5.9

  User visible fixes:

   - async discard scheduling fixes on high loads

   - update inode byte counter atomically so stat() does not report
     wrong value in some cases

   - free space tree fixes:
       - correctly report status of v2 after remount
       - clear v1 cache inodes when v2 is newly enabled after remount

  Core:

   - switch own tree lock implementation to standard rw semaphore:
       - one-level lock nesting is not required anymore, the last use of
         this was in free space that's now loaded asynchronously
       - own implementation of adaptive spinning before taking mutex has
         been part of rwsem
       - performance seems to be better in general, much better (+tens
         of percents) for some workloads
       - lockdep does not complain

   - finish direct IO conversion to iomap infrastructure, remove
     temporary workaround for DSYNC after iomap API updates

   - preparatory work to support data and metadata blocks smaller than
     page:
       - generalize code that assumes sectorsize == PAGE_SIZE, lots of
         refactoring
       - planned namely for 64K pages (eg. arm64, ppc64)
       - scrub read-only support

   - preparatory work for zoned allocation mode (SMR/ZBC/ZNS friendly):
       - disable incompatible features
       - round-robin superblock write

   - free space cache (v1) is loaded asynchronously, remove tree path
     recursion

   - slightly improved time tacking for transaction kthread wake ups

  Performance improvements (note that the numbers depend on load type or
  other features and weren't run on the same machine):

   - skip unnecessary work:
       - do not start readahead for csum tree when scrubbing non-data
         block groups
       - do not start and wait for delalloc on snapshot roots on
         transaction commit
       - fix race when defragmenting leads to unnecessary IO

   - dbench speedups (+throughput%/-max latency%):
       - skip unnecessary searches for xattrs when logging an inode
         (+10.8/-8.2)
       - stop incrementing log batch when joining log transaction (1-2)
       - unlock path before checking if extent is shared during nocow
         writeback (+5.0/-20.5), on fio load +9.7% throughput/-9.8%
         runtime
       - several tree log improvements, eg. removing unnecessary
         operations, fixing races that lead to additional work
         (+12.7/-8.2)

   - tree-checker error branches annotated with unlikely() (+3%
     throughput)

  Other:

   - cleanups

   - lockdep fixes

   - more btrfs_inode conversions

   - error variable cleanups"

* tag 'for-5.11-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (198 commits)
  btrfs: scrub: allow scrub to work with subpage sectorsize
  btrfs: scrub: support subpage data scrub
  btrfs: scrub: support subpage tree block scrub
  btrfs: scrub: always allocate one full page for one sector for RAID56
  btrfs: scrub: reduce width of extent_len/stripe_len from 64 to 32 bits
  btrfs: refactor btrfs_lookup_bio_sums to handle out-of-order bvecs
  btrfs: remove btrfs_find_ordered_sum call from btrfs_lookup_bio_sums
  btrfs: handle sectorsize < PAGE_SIZE case for extent buffer accessors
  btrfs: update num_extent_pages to support subpage sized extent buffer
  btrfs: don't allow tree block to cross page boundary for subpage support
  btrfs: calculate inline extent buffer page size based on page size
  btrfs: factor out btree page submission code to a helper
  btrfs: make btrfs_verify_data_csum follow sector size
  btrfs: pass bio_offset to check_data_csum() directly
  btrfs: rename bio_offset of extent_submit_bio_start_t to dio_file_offset
  btrfs: fix lockdep warning when creating free space tree
  btrfs: skip space_cache v1 setup when not using it
  btrfs: remove free space items when disabling space cache v1
  btrfs: warn when remount will not change the free space tree
  btrfs: use superblock state to print space_cache mount option
  ...
2020-12-15 18:40:42 -08:00
Linus Torvalds
a725cb4d70 File locking fixes for v5.11
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Merge tag 'locks-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux

Pull file locking fixes from Jeff Layton:
 "A fix for some undefined integer overflow behavior, a typo in a
  comment header, and a fix for a potential deadlock involving internal
  senders of SIGIO/SIGURG"

* tag 'locks-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
  fcntl: Fix potential deadlock in send_sig{io, urg}()
  locks: fix a typo at a kernel-doc markup
  locks: Fix UBSAN undefined behaviour in flock64_to_posix_lock
2020-12-15 18:34:15 -08:00
Linus Torvalds
e87b070839 rpmsg updates for v5.11
This extracts the "nameserver" previoiusly used only by the virtio rpmsg
 transport to work ontop of any rpmsg implementation and clarifies the
 endianness of the data types used in rpmsg.
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Merge tag 'rpmsg-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc

Pull rpmsg updates from Bjorn Andersson:
 "This extracts the 'nameserver' previously used only by the virtio
  rpmsg transport to work ontop of any rpmsg implementation and
  clarifies the endianness of the data types used in rpmsg"

* tag 'rpmsg-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
  rpmsg: Turn name service into a stand alone driver
  rpmsg: Make rpmsg_{register|unregister}_device() public
  rpmsg: virtio: Add rpmsg channel device ops
  rpmsg: core: Add channel creation internal API
  rpmsg: virtio: Rename rpmsg_create_channel
  rpmsg: Move structure rpmsg_ns_msg to header file
  rpmsg: virtio: Move from virtio to rpmsg byte conversion
  rpmsg: Introduce __rpmsg{16|32|64} types
2020-12-15 17:41:36 -08:00
Linus Torvalds
0e10f9c893 hwspinlock updates for v5.11
This contains a few minor cleanups and build warning fixes for the sprd
 and sirf hwspinlock drivers.
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Merge tag 'hwlock-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc

Pull hwspinlock updates from Bjorn Andersson:
 "This contains a few minor cleanups and build warning fixes for the
  sprd and sirf hwspinlock drivers"

* tag 'hwlock-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
  hwspinlock: sirf: Remove the redundant 'of_match_ptr'
  hwspinlock: sprd: fixed warning of unused variable 'sprd_hwspinlock_of_match'
  hwspinlock: sprd: use module_platform_driver() instead postcore initcall
  hwspinlock: sprd: Remove redundant header files
2020-12-15 17:39:38 -08:00
Linus Torvalds
ef9df00117 remoteproc updates for v5.11
This introduces support for controlling the TI PRU, adds hooks for
 remoteproc drivers to override the default ELF based coredump format,
 introduces a library function for coredumps using named sections (aka
 the Qualcomm "minidump" format). It fixes a problem with inconsistent
 notifications sent by the Qualcomm sysmon driver to the remote
 processors and it migrates the Qualcomm MSS driver to use power-domains
 for resources that aren't actually regulators.  Lastly it contains a
 number of fixes for minor bugs and build warnings throughout the
 drivers.
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Merge tag 'rproc-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:
 "This introduces support for controlling the TI PRU, adds hooks for
  remoteproc drivers to override the default ELF based coredump format,
  introduces a library function for coredumps using named sections (aka
  the Qualcomm "minidump" format).

  It also fixes a problem with inconsistent notifications sent by the
  Qualcomm sysmon driver to the remote processors and it migrates the
  Qualcomm MSS driver to use power-domains for resources that aren't
  actually regulators.

  Lastly it contains a number of fixes for minor bugs and build warnings
  throughout the drivers"

* tag 'rproc-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc: (47 commits)
  remoteproc/mediatek: read IPI buffer offset from FW
  remoteproc/mediatek: unprepare clk if scp_before_load fails
  remoteproc: qcom: Fix potential NULL dereference in adsp_init_mmio()
  remoteproc/mediatek: Fix kernel test robot warning
  remoteproc: k3-dsp: Fix return value check in k3_dsp_rproc_of_get_memories()
  remoteproc: qcom: pas: fix error handling in adsp_pds_enable
  remoteproc: qcom: fix reference leak in adsp_start
  remoteproc: q6v5-mss: fix error handling in q6v5_pds_enable
  remoteproc/mtk_scp: surround DT device IDs with CONFIG_OF
  remoteproc: qcom: Add minidump id for sm8150 modem
  remoteproc: qcom: Add capability to collect minidumps
  remoteproc: coredump: Add minidump functionality
  remoteproc: core: Add ops to enable custom coredump functionality
  remoteproc/mediatek: change MT8192 CFG register base
  remoteproc: pru: Add support for various PRU cores on K3 J721E SoCs
  remoteproc: pru: Add support for various PRU cores on K3 AM65x SoCs
  remoteproc: pru: Add pru-specific debugfs support
  remoteproc: pru: Add support for PRU specific interrupt configuration
  remoteproc: pru: Add a PRU remoteproc driver
  dt-bindings: remoteproc: Add binding doc for PRU cores in the PRU-ICSS
  ...
2020-12-15 17:37:26 -08:00
Trond Myklebust
edffb84cc8 NFSoRDmA Client updates for Linux 5.11
Cleanups and improvements:
   - Remove use of raw kernel memory addresses in tracepoints
   - Replace dprintk() call sites in ERR_CHUNK path
   - Trace unmap sync calls
   - Optimize MR DMA-unmapping
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Merge tag 'nfs-rdma-for-5.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfs into linux-next

NFSoRDmA Client updates for Linux 5.11

Cleanups and improvements:
  - Remove use of raw kernel memory addresses in tracepoints
  - Replace dprintk() call sites in ERR_CHUNK path
  - Trace unmap sync calls
  - Optimize MR DMA-unmapping

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2020-12-15 20:08:41 -05:00
Linus Torvalds
489e9fea66 pci-v5.11-changes
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Merge tag 'pci-v5.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:
   - Decode PCIe 64 GT/s link speed (Gustavo Pimentel)
   - Remove unused HAVE_PCI_SET_MWI (Heiner Kallweit)
   - Reduce pci_set_cacheline_size() message to debug level (Heiner
     Kallweit)
   - Fix pci_slot_release() NULL pointer dereference (Jubin Zhong)
   - Unify ECAM constants in native PCI Express drivers (Krzysztof
     Wilczyński)
   - Return u8 from pci_find_capability() and similar (Puranjay Mohan)
   - Return u16 from pci_find_ext_capability() and similar (Bjorn
     Helgaas)
   - Fix ACPI companion lookup for device 0 on the root bus (Rafael J.
     Wysocki)

  Resource management:
   - Keep both device and resource name for config space remaps
     (Alexander Lobakin)
   - Bounds-check command-line resource alignment requests (Bjorn
     Helgaas)
   - Fix overflow in command-line resource alignment requests (Colin Ian
     King)

  Driver binding:
   - Avoid duplicate IDs in driver dynamic IDs list (Zhenzhong Duan)

  Power management:
   - Save/restore Precision Time Measurement Capability for
     suspend/resume (David E. Box)
   - Disable PTM during suspend to save power (David E. Box)
   - Add sysfs attribute for device power state (Maximilian Luz)
   - Rename pci_wakeup_bus() to pci_resume_bus() (Mika Westerberg)
   - Do not generate wakeup event when runtime resuming device (Mika
     Westerberg)
   - Save/restore ASPM L1SS Capability for suspend/resume (Vidya Sagar)

  Virtualization:
   - Mark AMD Raven iGPU ATS as broken in some platforms (Alex Deucher)
   - Add function 1 DMA alias quirk for Marvell 9215 SATA controller
     (Bjorn Helgaas)

  MSI:
   - Disable MSI for Pericom PCIe-USB adapter (Andy Shevchenko)
   - Improve warnings for 32-bit-limited MSI support (Vidya Sagar)

  Error handling:
   - Cache RCEC EA Capability offset in pci_init_capabilities() (Sean V
     Kelley)
   - Rename reset_link() to reset_subordinates() (Sean V Kelley)
   - Write AER Capability only when we control it (Sean V Kelley)
   - Clear AER status only when we control AER (Sean V Kelley)
   - Bind RCEC devices to the Root Port driver (Qiuxu Zhuo)
   - Recover from RCiEP AER errors (Qiuxu Zhuo)
   - Recover from RCEC AER errors (Sean V Kelley)
   - Add pcie_link_rcec() to associate RCiEPs (Sean V Kelley)
   - Add pcie_walk_rcec() to RCEC AER handling (Sean V Kelley)
   - Add pcie_walk_rcec() to RCEC PME handling (Sean V Kelley)
   - Add RCEC AER error injection support (Qiuxu Zhuo)

  Broadcom iProc PCIe controller driver:
   - Fix out-of-bound array accesses (Bharat Gooty)
   - Invalidate correct PAXB inbound windows (Roman Bacik)
   - Enhance PCIe Link information display (Srinath Mannam)

  Cadence PCIe controller driver:
   - Make "cdns,max-outbound-regions" property optional (Kishon Vijay
     Abraham I)

  Intel VMD host bridge driver:
   - Offset client MSI-X vectors (Jon Derrick)
   - Update type of __iomem pointers (Krzysztof Wilczyński)

  NVIDIA Tegra PCIe controller driver:
   - Move "dbi" accesses to post common DWC initialization (Vidya Sagar)
   - Read "dbi" base address to program in application logic (Vidya
     Sagar)
   - Fix ASPM-L1SS advertisement disable code (Vidya Sagar)
   - Set DesignWare IP version (Vidya Sagar)
   - Continue unconfig sequence even if parts fail (Vidya Sagar)
   - Check return value of tegra_pcie_init_controller() (Vidya Sagar)
   - Disable LTSSM during L2 entry (Vidya Sagar)

  Qualcomm PCIe controller driver:
   - Document PCIe bindings for SM8250 SoC (Manivannan Sadhasivam)
   - Add SM8250 SoC support (Manivannan Sadhasivam)
   - Add support for configuring BDF to SID mapping for SM8250
     (Manivannan Sadhasivam)

  Renesas R-Car PCIe controller driver:
   - rcar: Drop unused members from struct rcar_pcie_host (Lad
     Prabhakar)
   - PCI: rcar-pci-host: Document r8a774e1 bindings (Lad Prabhakar)
   - PCI: rcar-pci-host: Convert bindings to json-schema (Yoshihiro
     Shimoda)
   - PCI: rcar-pci-host: Document r8a77965 bindings (Yoshihiro Shimoda)

  Samsung Exynos PCIe controller driver:
   - Rework driver to support Exynos5433 PCIe PHY (Jaehoon Chung)
   - Rework driver to support Exynos5433 variant (Jaehoon Chung)
   - Drop samsung,exynos5440-pcie binding (Marek Szyprowski)
   - Add the samsung,exynos-pcie binding (Marek Szyprowski)
   - Add the samsung,exynos-pcie-phy binding (Marek Szyprowski)

  Synopsys DesignWare PCIe controller driver:
   - Support multiple ATU memory regions (Rob Herring)
   - Move intel-gw ATU offset out of driver match data (Rob Herring)
   - Move "dbi", "dbi2", and "addr_space" resource setup into common
     code (Rob Herring)
   - Remove intel-gw unneeded function wrappers (Rob Herring)
   - Ensure all outbound ATU windows are reset (Rob Herring)
   - Use the common MSI irq_chip in dra7xx (Rob Herring)
   - Drop the .set_num_vectors() host op (Rob Herring)
   - Move MSI interrupt setup into DWC common code (Rob Herring)
   - Rework MSI initialization (Rob Herring)
   - Move link handling into common code (Rob Herring)
   - Move dw_pcie_msi_init() into core (Rob Herring)
   - Move dw_pcie_setup_rc() to DWC common code (Rob Herring)
   - Remove unnecessary wrappers around dw_pcie_host_init() (Rob
     Herring)
   - Drop keystone duplicated 'num-viewport'" (Rob Herring)
   - Move inbound and outbound windows to common struct (Rob Herring)
   - Detect number of iATU windows (Rob Herring)
   - Warn if non-prefetchable memory aperture size is > 32-bit (Vidya
     Sagar)
   - Add support to program ATU for >4GB memory (Vidya Sagar)
   - Set 32-bit DMA mask for MSI target address allocation (Vidya Sagar)

  TI J721E PCIe driver:
   - Fix "ti,syscon-pcie-ctrl" to take argument (Kishon Vijay Abraham I)
   - Add host mode dt-bindings for TI's J7200 SoC (Kishon Vijay Abraham
     I)
   - Add EP mode dt-bindings for TI's J7200 SoC (Kishon Vijay Abraham I)
   - Get offset within "syscon" from "ti,syscon-pcie-ctrl" phandle arg
     (Kishon Vijay Abraham I)

  TI Keystone PCIe controller driver:
   - Enable compile-testing on !ARM (Alex Dewar)"

* tag 'pci-v5.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (100 commits)
  PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller
  PCI/ACPI: Fix companion lookup for device 0 on the root bus
  PCI: Keep both device and resource name for config space remaps
  PCI: xgene: Removed unused ".bus_shift" initialisers from pci-xgene.c
  PCI: vmd: Update type of the __iomem pointers
  PCI: iproc: Convert to use the new ECAM constants
  PCI: thunder-pem: Add constant for custom ".bus_shift" initialiser
  PCI: Unify ECAM constants in native PCI Express drivers
  PCI: Disable PTM during suspend to save power
  PCI/PTM: Save/restore Precision Time Measurement Capability for suspend/resume
  PCI: Mark AMD Raven iGPU ATS as broken in some platforms
  PCI: j721e: Get offset within "syscon" from "ti,syscon-pcie-ctrl" phandle arg
  dt-bindings: PCI: Add EP mode dt-bindings for TI's J7200 SoC
  dt-bindings: PCI: Add host mode dt-bindings for TI's J7200 SoC
  dt-bindings: pci: ti,j721e: Fix "ti,syscon-pcie-ctrl" to take argument
  PCI: dwc: Set 32-bit DMA mask for MSI target address allocation
  PCI: qcom: Add support for configuring BDF to SID mapping for SM8250
  PCI: Reduce pci_set_cacheline_size() message to debug level
  PCI: Remove unused HAVE_PCI_SET_MWI
  PCI: qcom: Add SM8250 SoC support
  ...
2020-12-15 16:49:59 -08:00
Linus Torvalds
aab7ce2b09 ACPI updates for 5.11-rc1
- Update ACPICA code in the kernel to upstream revision 20201113
    with changes as follows:
 
    * Add 5 new UUIDs to the known UUID table (Bob Moore).
    * Remove extreaneous "the" in comments (Colin Ian King).
    * Add function trace macros to improve debugging (Erik Kaneda).
    * Fix interpreter memory leak (Erik Kaneda).
    * Handle "orphan" _REG for GPIO OpRegions (Hans de Goede).
 
  - Introduce resource_union() and resource_intersection() helpers
    and clean up some resource-manipulation code with the help of
    them (Andy Shevchenko).
 
  - Revert problematic commit related to the handling of resources
    in the ACPI core (Daniel Scally).
 
  - Extend the ACPI device enumeration documentation and the
    gpio-line-names _DSD property documentation, clean up the
    latter (Flavio Suligoi).
 
  - Clean up _DEP handling during device enumeration, modify the list
    of _DEP exceptions and the handling of it and fix up terminology
    related to _DEP (Hans de Goede, Rafael Wysocki).
 
  - Eliminate in_interrupt() usage from the ACPI EC driver (Sebastian
    Andrzej Siewior).
 
  - Clean up the advance_transaction() routine and related code in
    the ACPI EC driver (Rafael Wysocki).
 
  - Add new backlight quirk for GIGABYTE GB-BXBT-2807 (Jasper
    St. Pierre).
 
  - Make assorted janitorial changes in several ACPI-related pieces
    of code (Hanjun Guo, Jason Yan, Punit Agrawal).
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Merge tag 'acpi-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to upstream revision
  20201113, fix and clean up some resources manipulation code, extend
  the enumeration and gpio-line-names property documentation, clean up
  the handling of _DEP during device enumeration, add a new backlight
  DMI quirk, clean up transaction handling in the EC driver and make
  some assorted janitorial changes.

  Specifics:

   - Update ACPICA code in the kernel to upstream revision 20201113 with
     changes as follows:
       * Add 5 new UUIDs to the known UUID table (Bob Moore)
       * Remove extreaneous "the" in comments (Colin Ian King)
       * Add function trace macros to improve debugging (Erik Kaneda)
       * Fix interpreter memory leak (Erik Kaneda)
       * Handle "orphan" _REG for GPIO OpRegions (Hans de Goede)

   - Introduce resource_union() and resource_intersection() helpers and
     clean up some resource-manipulation code with the help of them
     (Andy Shevchenko)

   - Revert problematic commit related to the handling of resources in
     the ACPI core (Daniel Scally)

   - Extend the ACPI device enumeration documentation and the
     gpio-line-names _DSD property documentation, clean up the latter
     (Flavio Suligoi)

   - Clean up _DEP handling during device enumeration, modify the list
     of _DEP exceptions and the handling of it and fix up terminology
     related to _DEP (Hans de Goede, Rafael Wysocki)

   - Eliminate in_interrupt() usage from the ACPI EC driver (Sebastian
     Andrzej Siewior)

   - Clean up the advance_transaction() routine and related code in the
     ACPI EC driver (Rafael Wysocki)

   - Add new backlight quirk for GIGABYTE GB-BXBT-2807 (Jasper St
     Pierre)

   - Make assorted janitorial changes in several ACPI-related pieces of
     code (Hanjun Guo, Jason Yan, Punit Agrawal)"

* tag 'acpi-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (40 commits)
  ACPI: scan: Fix up _DEP-related terminology with supplier/consumer
  ACPI: scan: Drop INT3396 from acpi_ignore_dep_ids[]
  ACPI: video: Add DMI quirk for GIGABYTE GB-BXBT-2807
  Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"
  ACPI: scan: Add PNP0D80 to the _DEP exceptions list
  ACPI: scan: Call acpi_get_object_info() from acpi_add_single_object()
  ACPI: scan: Add acpi_info_matches_hids() helper
  ACPICA: Update version to 20201113
  ACPICA: Interpreter: fix memory leak by using existing buffer
  ACPICA: Add function trace macros to improve debugging
  ACPICA: Also handle "orphan" _REG methods for GPIO OpRegions
  ACPICA: Remove extreaneous "the" in comments
  ACPICA: Add 5 new UUIDs to the known UUID table
  resource: provide meaningful MODULE_LICENSE() in test suite
  ASoC: Intel: catpt: Replace open coded variant of resource_intersection()
  ACPI: processor: Drop duplicate setting of shared_cpu_map
  ACPI: EC: Clean up status flags checks in advance_transaction()
  ACPI: EC: Untangle error handling in advance_transaction()
  ACPI: EC: Simplify error handling in advance_transaction()
  ACPI: EC: Rename acpi_ec_is_gpe_raised()
  ...
2020-12-15 16:39:06 -08:00
Linus Torvalds
b4ec805464 Power management updates for 5.11-rc1
- Use local_clock() instead of jiffies in the cpufreq statistics to
    improve accuracy (Viresh Kumar).
 
  - Fix up OPP usage in the cpufreq-dt and qcom-cpufreq-nvmem cpufreq
    drivers (Viresh Kumar).
 
  - Clean up the cpufreq core, the intel_pstate driver and the
    schedutil cpufreq governor (Rafael Wysocki).
 
  - Fix up error code paths in the sti-cpufreq and mediatek cpufreq
    drivers (Yangtao Li, Qinglang Miao).
 
  - Fix cpufreq_online() to return error codes instead of success (0)
    in all cases when it fails (Wang ShaoBo).
 
  - Add mt8167 support to the mediatek cpufreq driver and blacklist
    mt8516 in the cpufreq-dt-platdev driver (Fabien Parent).
 
  - Modify the tegra194 cpufreq driver to always return values from
    the frequency table as the current frequency and clean up that
    driver (Sumit Gupta, Jon Hunter).
 
  - Modify the arm_scmi cpufreq driver to allow it to discover the
    power scale present in the performance protocol and provide this
    information to the Energy Model (Lukasz Luba).
 
  - Add missing MODULE_DEVICE_TABLE to several cpufreq drivers (Pali
    Rohár).
 
  - Clean up the CPPC cpufreq driver (Ionela Voinescu).
 
  - Fix NVMEM_IMX_OCOTP dependency in the imx cpufreq driver (Arnd
    Bergmann).
 
  - Rework the poling interval selection for the polling state in
    cpuidle (Mel Gorman).
 
  - Enable suspend-to-idle for PSCI OSI mode in the PSCI cpuidle
    driver (Ulf Hansson).
 
  - Modify the OPP framework to support empty (node-less) OPP tables
    in DT for passing dependency information (Nicola Mazzucato).
 
  - Fix potential lockdep issue in the OPP core and clean up the OPP
    core (Viresh Kumar).
 
  - Modify dev_pm_opp_put_regulators() to accept a NULL argument and
    update its users accordingly (Viresh Kumar).
 
  - Add frequency changes tracepoint to devfreq (Matthias Kaehlcke).
 
  - Add support for governor feature flags to devfreq, make devfreq
    sysfs file permissions depend on the governor and clean up the
    devfreq core (Chanwoo Choi).
 
  - Clean up the tegra20 devfreq driver and deprecate it to allow
    another driver based on EMC_STAT to be used instead of it (Dmitry
    Osipenko).
 
  - Add interconnect support to the tegra30 devfreq driver, allow it
    to take the interconnect and OPP information from DT and clean it
    up ((Dmitry Osipenko).
 
  - Add interconnect support to the exynos-bus devfreq driver along
    with interconnect properties documentation (Sylwester Nawrocki).
 
  - Add suport for AMD Fam17h and Fam19h processors to the RAPL power
    capping driver (Victor Ding, Kim Phillips).
 
  - Fix handling of overly long constraint names in the powercap
    framework (Lukasz Luba).
 
  - Fix the wakeup configuration handling for bridges in the ACPI
    device power management core (Rafael Wysocki).
 
  - Add support for using an abstract scale for power units in the
    Energy Model (EM) and document it (Lukasz Luba).
 
  - Add em_cpu_energy() micro-optimization to the EM (Pavankumar
    Kondeti).
 
  - Modify the generic power domains (genpd) framwework to support
    suspend-to-idle (Ulf Hansson).
 
  - Fix creation of debugfs nodes in genpd (Thierry Strudel).
 
  - Clean up genpd (Lina Iyer).
 
  - Clean up the core system-wide suspend code and make it print
    driver flags for devices with debug enabled (Alex Shi, Patrice
    Chotard, Chen Yu).
 
  - Modify the ACPI system reboot code to make it prepare for system
    power off to avoid confusing the platform firmware (Kai-Heng Feng).
 
  - Update the pm-graph (multiple changes, mostly usability-related)
    and cpupower (online and offline CPU information support) PM
    utilities (Todd Brandt, Brahadambal Srinivasan).
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Merge tag 'pm-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "These update cpufreq (core and drivers), cpuidle (polling state
  implementation and the PSCI driver), the OPP (operating performance
  points) framework, devfreq (core and drivers), the power capping RAPL
  (Running Average Power Limit) driver, the Energy Model support, the
  generic power domains (genpd) framework, the ACPI device power
  management, the core system-wide suspend code and power management
  utilities.

  Specifics:

   - Use local_clock() instead of jiffies in the cpufreq statistics to
     improve accuracy (Viresh Kumar).

   - Fix up OPP usage in the cpufreq-dt and qcom-cpufreq-nvmem cpufreq
     drivers (Viresh Kumar).

   - Clean up the cpufreq core, the intel_pstate driver and the
     schedutil cpufreq governor (Rafael Wysocki).

   - Fix up error code paths in the sti-cpufreq and mediatek cpufreq
     drivers (Yangtao Li, Qinglang Miao).

   - Fix cpufreq_online() to return error codes instead of success (0)
     in all cases when it fails (Wang ShaoBo).

   - Add mt8167 support to the mediatek cpufreq driver and blacklist
     mt8516 in the cpufreq-dt-platdev driver (Fabien Parent).

   - Modify the tegra194 cpufreq driver to always return values from the
     frequency table as the current frequency and clean up that driver
     (Sumit Gupta, Jon Hunter).

   - Modify the arm_scmi cpufreq driver to allow it to discover the
     power scale present in the performance protocol and provide this
     information to the Energy Model (Lukasz Luba).

   - Add missing MODULE_DEVICE_TABLE to several cpufreq drivers (Pali
     Rohár).

   - Clean up the CPPC cpufreq driver (Ionela Voinescu).

   - Fix NVMEM_IMX_OCOTP dependency in the imx cpufreq driver (Arnd
     Bergmann).

   - Rework the poling interval selection for the polling state in
     cpuidle (Mel Gorman).

   - Enable suspend-to-idle for PSCI OSI mode in the PSCI cpuidle driver
     (Ulf Hansson).

   - Modify the OPP framework to support empty (node-less) OPP tables in
     DT for passing dependency information (Nicola Mazzucato).

   - Fix potential lockdep issue in the OPP core and clean up the OPP
     core (Viresh Kumar).

   - Modify dev_pm_opp_put_regulators() to accept a NULL argument and
     update its users accordingly (Viresh Kumar).

   - Add frequency changes tracepoint to devfreq (Matthias Kaehlcke).

   - Add support for governor feature flags to devfreq, make devfreq
     sysfs file permissions depend on the governor and clean up the
     devfreq core (Chanwoo Choi).

   - Clean up the tegra20 devfreq driver and deprecate it to allow
     another driver based on EMC_STAT to be used instead of it (Dmitry
     Osipenko).

   - Add interconnect support to the tegra30 devfreq driver, allow it to
     take the interconnect and OPP information from DT and clean it up
     (Dmitry Osipenko).

   - Add interconnect support to the exynos-bus devfreq driver along
     with interconnect properties documentation (Sylwester Nawrocki).

   - Add suport for AMD Fam17h and Fam19h processors to the RAPL power
     capping driver (Victor Ding, Kim Phillips).

   - Fix handling of overly long constraint names in the powercap
     framework (Lukasz Luba).

   - Fix the wakeup configuration handling for bridges in the ACPI
     device power management core (Rafael Wysocki).

   - Add support for using an abstract scale for power units in the
     Energy Model (EM) and document it (Lukasz Luba).

   - Add em_cpu_energy() micro-optimization to the EM (Pavankumar
     Kondeti).

   - Modify the generic power domains (genpd) framwework to support
     suspend-to-idle (Ulf Hansson).

   - Fix creation of debugfs nodes in genpd (Thierry Strudel).

   - Clean up genpd (Lina Iyer).

   - Clean up the core system-wide suspend code and make it print driver
     flags for devices with debug enabled (Alex Shi, Patrice Chotard,
     Chen Yu).

   - Modify the ACPI system reboot code to make it prepare for system
     power off to avoid confusing the platform firmware (Kai-Heng Feng).

   - Update the pm-graph (multiple changes, mostly usability-related)
     and cpupower (online and offline CPU information support) PM
     utilities (Todd Brandt, Brahadambal Srinivasan)"

* tag 'pm-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (86 commits)
  cpufreq: Fix cpufreq_online() return value on errors
  cpufreq: Fix up several kerneldoc comments
  cpufreq: stats: Use local_clock() instead of jiffies
  cpufreq: schedutil: Simplify sugov_update_next_freq()
  cpufreq: intel_pstate: Simplify intel_cpufreq_update_pstate()
  PM: domains: create debugfs nodes when adding power domains
  opp: of: Allow empty opp-table with opp-shared
  dt-bindings: opp: Allow empty OPP tables
  media: venus: dev_pm_opp_put_*() accepts NULL argument
  drm/panfrost: dev_pm_opp_put_*() accepts NULL argument
  drm/lima: dev_pm_opp_put_*() accepts NULL argument
  PM / devfreq: exynos: dev_pm_opp_put_*() accepts NULL argument
  cpufreq: qcom-cpufreq-nvmem: dev_pm_opp_put_*() accepts NULL argument
  cpufreq: dt: dev_pm_opp_put_regulators() accepts NULL argument
  opp: Allow dev_pm_opp_put_*() APIs to accept NULL opp_table
  opp: Don't create an OPP table from dev_pm_opp_get_opp_table()
  cpufreq: dt: Don't (ab)use dev_pm_opp_get_opp_table() to create OPP table
  opp: Reduce the size of critical section in _opp_kref_release()
  PM / EM: Micro optimization in em_cpu_energy
  cpufreq: arm_scmi: Discover the power scale in performance protocol
  ...
2020-12-15 16:30:31 -08:00
Linus Torvalds
b109bc7229 Merge tag 'thermal-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal updates from Daniel Lezcano:

 - Add upper and lower limits clamps for the cooling device state in the
   power allocator governor (Michael Kao)

 - Add upper and lower limits support for the power allocator governor
   (Lukasz Luba)

 - Optimize conditions testing for the trip points (Bernard Zhao)

 - Replace spin_lock_irqsave by spin_lock in hard IRQ on the rcar driver
   (Tian Tao)

 - Add MT8516 dt-bindings and device reset optional support (Fabien
   Parent)

 - Add a quiescent period to cool down the PCH when entering S0iX
   (Sumeet Pawnikar)

 - Use bitmap API instead of re-inventing the wheel on sun8i (Yangtao
   Li)

 - Remove useless NULL check in the hwmon driver (Bernard Zhao)

 - Update the current state in the cpufreq cooling device only if the
   frequency change is effective (Zhuguangqing)

 - Improve the schema validation for the rcar DT bindings (Geert
   Uytterhoeven)

 - Fix the user time unit in the documentation (Viresh Kumar)

 - Add PCI ids for Lewisburg PCH (Andres Freund)

 - Add hwmon support on amlogic (Martin Blumenstingl)

 - Fix build failure for PCH entering on in S0iX (Randy Dunlap)

 - Improve the k_* coefficient for the power allocator governor (Lukasz
   Luba)

 - Fix missing const on a sysfs attribute (Rikard Falkeborn)

 - Remove broken interrupt support on rcar to be replaced by a new one
   (Niklas Söderlund)

 - Improve the error code handling at init time on imx8mm (Fabio
   Estevam)

 - Compute interval validity once instead at each temperature reading
   iteration on acerhdf (Daniel Lezcano)

 - Add r8a779a0 support (Niklas Söderlund)

 - Add PCI ids for AlderLake PCH and mmio refactoring (Srinivas
   Pandruvada)

 - Add RFIM and mailbox support on int340x (Srinivas Pandruvada)

 - Use macro for temperature calculation on PCH (Sumeet Pawnikar)

 - Simplify return conditions at probe time on Broadcom (Zheng Yongjun)

 - Fix workload name on PCH (Srinivas Pandruvada)

 - Migrate the devfreq cooling device code to the energy model API
   (Lukasz Luba)

 - Emit a warning if the thermal_zone_device_update is called without
   the .get_temp() ops (Daniel Lezcano)

 - Add critical and hot ops for the thermal zone (Daniel Lezcano)

 - Remove notification usage when critical is reached on rcar (Daniel
   Lezcano)

 - Fix devfreq build when ENERGY_MODEL is not set (Lukasz Luba)

* tag 'thermal-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (45 commits)
  thermal/drivers/devfreq_cooling: Fix the build when !ENERGY_MODEL
  thermal/drivers/rcar: Remove notification usage
  thermal/core: Add critical and hot ops
  thermal/core: Emit a warning if the thermal zone is updated without ops
  drm/panfrost: Register devfreq cooling and attempt to add Energy Model
  thermal: devfreq_cooling: remove old power model and use EM
  thermal: devfreq_cooling: add new registration functions with Energy Model
  thermal: devfreq_cooling: use a copy of device status
  thermal: devfreq_cooling: change tracing function and arguments
  thermal: int340x: processor_thermal: Correct workload type name
  thermal: broadcom: simplify the return expression of bcm2711_thermal_probe()
  thermal: intel: pch: use macro for temperature calculation
  thermal: int340x: processor_thermal: Add mailbox driver
  thermal: int340x: processor_thermal: Add RFIM driver
  thermal: int340x: processor_thermal: Add AlderLake PCI device id
  thermal: int340x: processor_thermal: Refactor MMIO interface
  thermal: rcar_gen3_thermal: Add r8a779a0 support
  dt-bindings: thermal: rcar-gen3-thermal: Add r8a779a0 support
  platform/x86/drivers/acerhdf: Check the interval value when it is set
  platform/x86/drivers/acerhdf: Use module_param_cb to set/get polling interval
  ...
2020-12-15 16:21:37 -08:00
Linus Torvalds
ee249d30fa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:

 - support for inhibiting input devices at request from userspace. If a
   device implements open/close methods, it can also put device into low
   power state. This is needed, for example, to disable keyboard and
   touchpad on convertibles when they are transitioned into tablet mode

 - now that ordinary input devices can be configured for polling mode,
   dedicated input polling device implementation has been removed

 - GTCO tablet driver has been removed, as it used problematic custom
   HID parser, devices are EOL, and there is no interest from the
   manufacturer

 - a new driver for Dialog DA7280 haptic chips has been introduced

 - a new driver for power button on Dell Wyse 3020

 - support for eKTF2132 in ektf2127 driver

 - support for SC2721 and SC2730 in sc27xx-vibra driver

 - enhancements for Atmel touchscreens, AD7846 touchscreens, Elan
   touchpads, ADP5589, ST1232 touchscreen, TM2 touchkey drivers

 - fixes and cleanups to allow clean builds with W=1

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (86 commits)
  Input: da7280 - fix spelling mistake "sequemce" -> "sequence"
  Input: cyapa_gen6 - fix out-of-bounds stack access
  Input: sc27xx - add support for sc2730 and sc2721
  dt-bindings: input: Add compatible string for SC2721 and SC2730
  dt-bindings: input: Convert sc27xx-vibra.txt to json-schema
  Input: stmpe - add axis inversion and swapping capability
  Input: adp5589-keys - do not explicitly control IRQ for wakeup
  Input: adp5589-keys - do not unconditionally configure as wakeup source
  Input: ipx4xx-beeper - convert comma to semicolon
  Input: parkbd - convert comma to semicolon
  Input: new da7280 haptic driver
  dt-bindings: input: Add document bindings for DA7280
  MAINTAINERS: da7280 updates to the Dialog Semiconductor search terms
  Input: elantech - fix protocol errors for some trackpoints in SMBus mode
  Input: elan_i2c - add new trackpoint report type 0x5F
  Input: elants - document some registers and values
  Input: atmel_mxt_ts - simplify the return expression of mxt_send_bootloader_cmd()
  Input: imx_keypad - add COMPILE_TEST support
  Input: applespi - use new structure for SPI transfer delays
  Input: synaptics-rmi4 - use new structure for SPI transfer delays
  ...
2020-12-15 16:18:23 -08:00
Linus Torvalds
61f914256c platform-drivers-x86 for v5.11-1
Highlights:
 - New driver for changing BIOS settings from within Linux on Dell devices,
   this introduces a new generic sysfs API for this. Lenovo is working on
   also supporting this API on their devices
 - New Intel PMT telemetry and crashlog drivers
 - Support for SW_TABLET_MODE reporting for the acer-wmi and intel-hid drivers
 - Preparation work for improving support for Microsoft Surface hardware
 - Various fixes / improvements / quirks for the panasonic-laptop and others
 
 The following is an automated git shortlog grouped by driver:
 
 ISST:
  -  Mark mmio_range_devid_0 and mmio_range_devid_1 with static keyword
  -  Change PCI device macros
  -  Allow configurable offset range
  -  Check for unaligned mmio address
 
 Intel PMT Crashlog capability driver:
  - Intel PMT Crashlog capability driver
 
 Intel PMT Telemetry capability driver:
  - Intel PMT Telemetry capability driver
 
 Intel PMT class driver:
  - Intel PMT class driver
 
 Introduce support for Systems Management Driver over WMI for Dell Systems:
  - Introduce support for Systems Management Driver over WMI for Dell Systems
 
 MAINTAINERS:
  -  new panasonic-laptop maintainer
  -  rectify DELL WMI SYSMAN DRIVERS section
 
 Merge tag 'ib-mfd-x86-v5.11' into review-hans:
  - Merge tag 'ib-mfd-x86-v5.11' into review-hans
 
 PCI:
  -  Add defines for Designated Vendor-Specific Extended Capability
 
 Revert "platform/x86:
  -  wmi: Destroy on cleanup rather than unregister"
 
 acer-wireless:
  -  send an EV_SYN/SYN_REPORT between state changes
 
 acer-wmi:
  -  Add ACER_CAP_KBD_DOCK quirk for the Aspire Switch 10E SW3-016
  -  add automatic keyboard background light toggle key as KEY_LIGHTS_TOGGLE
  -  Add support for SW_TABLET_MODE on Switch devices
  -  Add ACER_CAP_SET_FUNCTION_MODE capability flag
  -  Add new force_caps module parameter
  -  Cleanup accelerometer device handling
  -  Cleanup ACER_CAP_FOO defines
  -  Drop no-op set_quirks call from find_quirks
 
 amd-pmc:
  -  Add AMD platform support for S2Idle
 
 asus-wmi:
  -  Add userspace notification for performance mode change
  -  Add support for SW_TABLET_MODE on UX360
 
 dell-smbios-base:
  -  Fix error return code in dell_smbios_init
 
 dell-wmi-sysman:
  -  work around for BIOS bug
  -  fix init_bios_attributes() error handling
 
 docs:
  -  ABI: sysfs-class-firmware-attributes: solve some warnings
 
 i2c-multi-instantiate:
  -  Use device_get_match_data() to get driver data
  -  Simplify with dev_err_probe()
  -  Drop redundant ACPI_PTR()
 
 intel-hid:
  -  add Rocket Lake ACPI device ID
  -  Do not create SW_TABLET_MODE input-dev when a KIOX010A ACPI dev is present
  -  Add alternative method to enable switches
  -  Add support for SW_TABLET_MODE
  -  fix _DSM function index handling
 
 intel-vbtn:
  -  Fix SW_TABLET_MODE always reporting 1 on some HP x360 models
  -  Allow switch events on Acer Switch Alpha 12
  -  Support for tablet mode on HP Pavilion 13 x360 PC
 
 intel_pmc_core:
  -  Assign boolean values to a bool variable
 
 mfd:
  -  Intel Platform Monitoring Technology support
 
 mlx-platform:
  -  Fix item counter assignment for MSN2700/ComEx system
  -  Fix item counter assignment for MSN2700, MSN24xx systems
  -  remove an unused variable
  -  Remove PSU EEPROM from MSN274x platform configuration
  -  Remove PSU EEPROM from default platform configuration
 
 panasonic-laptop:
  -  Add sysfs attributes for firmware brightness registers
  -  Add support for battery charging threshold (eco mode)
  -  Resolve hotkey double trigger bug
  -  Add write support to mute
  -  Fix sticky key init bug
  -  Fix naming of platform files for consistency with other modules
  -  Split MODULE_AUTHOR() by one author per macro call
  -  Replace ACPI prints with pr_*() macros
  -  Add support for optical driver power in Y and W series
 
 platform:
  -  Add Surface platform directory
 
 platform/mellanox:
  -  mlxbf-pmc: Add Mellanox BlueField PMC driver
 
 platform/surface:
  -  gpe: Add support for 15" Intel version of Surface Laptop 3
  -  Add Driver to set up lid GPEs on MS Surface device
  -  Move Surface Pro 3 Button driver to platform/surface
  -  Move Surface 3 Power OpRegion driver to platform/surface
  -  Move Surface 3 Button driver to platform/surface
  -  Move Surface 3 WMI driver to platform/surface
 
 platform/x86/dell-wmi-sysman:
  -  Make some symbols static
  -  Make wmi_sysman_kobj_sysfs_ops static
 
 pmt:
  -  Fix a potential Oops on error in probe
 
 remove unneeded break:
  - remove unneeded break
 
 thinkpad_acpi:
  -  remove trailing semicolon in macro definition
  -  Whitelist P15 firmware for dual fan control
  -  Add palm sensor support
  -  Send tablet mode switch at wakeup time
  -  Add BAT1 is primary battery quirk for Thinkpad Yoga 11e 4th gen
  -  Do not report SW_TABLET_MODE on Yoga 11e
  -  add P1 gen3 second fan support
 
 tools/power/x86/intel-speed-select:
  -  Update version for v5.11
  -  Account for missing sysfs for die_id
  -  Read TRL from mailbox
 
 toshiba_acpi:
  -  Fix the wrong variable assignment
 
 touchscreen_dmi:
  -  Add info for the Irbis TW118 tablet
  -  Add info for the Predia Basic tablet
 
 x86/platform:
  -  classmate-laptop: add WiFi media button
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Merge tag 'platform-drivers-x86-v5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver updates from Hans de Goede:
 "Highlights:

   - New driver for changing BIOS settings from within Linux on Dell
     devices. This introduces a new generic sysfs API for this. Lenovo
     is working on also supporting this API on their devices

   - New Intel PMT telemetry and crashlog drivers

   - Support for SW_TABLET_MODE reporting for the acer-wmi and intel-hid
     drivers

   - Preparation work for improving support for Microsoft Surface
     hardware

   - Various fixes / improvements / quirks for the panasonic-laptop and
     others"

* tag 'platform-drivers-x86-v5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (81 commits)
  platform/x86: ISST: Mark mmio_range_devid_0 and mmio_range_devid_1 with static keyword
  platform/x86: intel-hid: add Rocket Lake ACPI device ID
  x86/platform: classmate-laptop: add WiFi media button
  platform/x86: mlx-platform: Fix item counter assignment for MSN2700/ComEx system
  platform/x86: mlx-platform: Fix item counter assignment for MSN2700, MSN24xx systems
  tools/power/x86/intel-speed-select: Update version for v5.11
  tools/power/x86/intel-speed-select: Account for missing sysfs for die_id
  tools/power/x86/intel-speed-select: Read TRL from mailbox
  platform/x86: intel-hid: Do not create SW_TABLET_MODE input-dev when a KIOX010A ACPI dev is present
  platform/x86: intel-hid: Add alternative method to enable switches
  platform/x86: intel-hid: Add support for SW_TABLET_MODE
  platform/x86: intel-vbtn: Fix SW_TABLET_MODE always reporting 1 on some HP x360 models
  platform/x86: ISST: Change PCI device macros
  platform/x86: ISST: Allow configurable offset range
  platform/x86: ISST: Check for unaligned mmio address
  acer-wireless: send an EV_SYN/SYN_REPORT between state changes
  platform/x86: dell-wmi-sysman: work around for BIOS bug
  platform/x86: mlx-platform: remove an unused variable
  platform/x86: thinkpad_acpi: remove trailing semicolon in macro definition
  platform/x86: dell-smbios-base: Fix error return code in dell_smbios_init
  ...
2020-12-15 16:10:17 -08:00
Linus Torvalds
0f97458173 hwmon patches for v5.11
- Driver for SB-TSI sensors
 - Add support for P10 to fsi/occ
 - Driver for LTC2992
 - Driver for Delta power supplies Q54SJ108A2
 - Support for NCT6687D added to nct6883 driver
 - Support for Intel-based Xserves added to applesmc driver
 - Driver for  Maxim MAX127
 - Support for  AMD family 19h model 01h added to amd_energy driver
 - Driver to support Corsair PSU
 - Driver for STMicroelectronics PM6764 Voltage Regulator
 - Various minor bug fixes and improvements
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Merge tag 'hwmon-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "New drivers:
   - SB-TSI sensors
   - Lineat Technology LTC2992
   - Delta power supplies Q54SJ108A2
   - Maxim MAX127
   - Corsair PSU
   - STMicroelectronics PM6764 Voltage Regulator

  New chip support:
   - P10 added to fsi/occ driver
   - NCT6687D added to nct6883 driver
   - Intel-based Xserves added to applesmc driver
   - AMD family 19h model 01h added to amd_energy driver

  And various minor bug fixes and improvements"

* tag 'hwmon-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (41 commits)
  dt-bindings: (hwmon/sbtsi_temp) Add SB-TSI hwmon driver bindings
  hwmon: (sbtsi) Add documentation
  hwmon: (sbtsi) Add basic support for SB-TSI sensors
  hwmon: (iio_hwmon) Drop bogus __refdata annotation
  hwmon: (xgene) Drop bogus __refdata annotation
  dt-bindings: hwmon: convert AD ADM1275 bindings to dt-schema
  hwmon: (occ) Add new temperature sensor type
  fsi: occ: Add support for P10
  dt-bindings: fsi: Add P10 OCC device documentation
  dt-bindings: hwmon: convert TI ADS7828 bindings to dt-schema
  dt-bindings: hwmon: convert AD AD741x bindings to dt-schema
  dt-bindings: hwmon: convert TI INA2xx bindings to dt-schema
  hwmon: (ltc2992) Fix less than zero comparisons with an unsigned integer
  hwmon: (pmbus/q54sj108a2) Correct title underline length
  dt-bindings: hwmon: Add documentation for ltc2992
  hwmon: (ltc2992) Add support for GPIOs.
  hwmon: (ltc2992) Add support
  hwmon: (pmbus) Driver for Delta power supplies Q54SJ108A2
  hwmon: Add driver for STMicroelectronics PM6764 Voltage Regulator
  hwmon: (nct6683) Support NCT6687D.
  ...
2020-12-15 16:06:14 -08:00
Linus Torvalds
ce51c2b7ce MMC core:
- Initial support for SD express card/host
 
 MMC host:
  - mxc: Convert the driver to DT-only
  - mtk-sd: Add HS400 enhanced strobe support
  - mtk-sd: Add support for the MT8192 SoC variant
  - sdhci-acpi: Allow changing HS200/HS400 driver strength for AMDI0040
  - sdhci-esdhc-imx: Convert the driver to DT-only
  - sdhci-pci-gli: Improve performance for HS400 mode for GL9763E
  - sdhci-pci-gli: Reduce power consumption for GL9755
  - sdhci-xenon: Introduce ACPI support
  - tmio: Fix command error processing
  - tmio: Inform the core about the max_busy_timeout
  - tmio/renesas_sdhi: Support custom calculation of busy-wait time
  - renesas_sdhi: Reset SCC only when available
  - rtsx_pci: Add SD Express mode support for RTS5261
  - rtsx_pci: Various fixes and improvements for RTS5261
 
 MEMSTICK:
  - Minor fixes/improvements.
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Merge tag 'mmc-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Initial support for SD express card/host

  MMC host:
   - mxc: Convert the driver to DT-only
   - mtk-sd: Add HS400 enhanced strobe support
   - mtk-sd: Add support for the MT8192 SoC variant
   - sdhci-acpi: Allow changing HS200/HS400 driver strength for AMDI0040
   - sdhci-esdhc-imx: Convert the driver to DT-only
   - sdhci-pci-gli: Improve performance for HS400 mode for GL9763E
   - sdhci-pci-gli: Reduce power consumption for GL9755
   - sdhci-xenon: Introduce ACPI support
   - tmio: Fix command error processing
   - tmio: Inform the core about the max_busy_timeout
   - tmio/renesas_sdhi: Support custom calculation of busy-wait time
   - renesas_sdhi: Reset SCC only when available
   - rtsx_pci: Add SD Express mode support for RTS5261
   - rtsx_pci: Various fixes and improvements for RTS5261

  MEMSTICK:
   - Minor fixes/improvements"

* tag 'mmc-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (72 commits)
  dt-bindings: mmc: eliminate yamllint warnings
  mmc: sdhci-xenon: introduce ACPI support
  mmc: sdhci-xenon: use clk only with DT
  mmc: sdhci-xenon: switch to device_* API
  mmc: sdhci-xenon: use match data for controllers variants
  dt-bindings: mmc: Fix xlnx,mio-bank property values for arasan driver
  mmc: renesas_sdhi: populate hook for longer busy_wait
  mmc: tmio: add hook for custom busy_wait calculation
  mmc: tmio: set max_busy_timeout
  dt-bindings: mmc: imx: fix the wrongly dropped imx8qm compatible string
  mmc: sdhci-pci-gli: Disable slow mode in HS400 mode for GL9763E
  mmc: sdhci: Use more concise device_property_read_u64
  memstick: r592: Fix error return in r592_probe()
  mmc: mxc: Convert the driver to DT-only
  mmc: mxs: Remove the unused .id_table
  mmc: sdhci-of-arasan: Fix fall-through warnings for Clang
  mmc: sdhci-pci-gli: Reduce power consumption for GL9755
  mmc: mediatek: depend on COMMON_CLK to fix compile tests
  mmc: pxamci: Fix error return code in pxamci_probe
  mmc: sdhci: Update firmware interface API
  ...
2020-12-15 15:57:25 -08:00
Linus Torvalds
9d0d886799 Merge branch 'i2c/for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
 "A bit smaller this time with mostly usual driver updates. Slave
  support for imx stands out a little"

* 'i2c/for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (30 commits)
  i2c: remove check that can never be true
  i2c: Warn when device removing fails
  dt-bindings: i2c: Update DT binding docs to support SiFive FU740 SoC
  dt-bindings: i2c: Add compatible string for AM64 SoC
  i2c: designware: Make register offsets all of the same width
  i2c: designware: Switch header to use BIT() and GENMASK()
  i2c: pxa: move to generic GPIO recovery
  i2c: sh_mobile: Mark adapter suspended during suspend
  i2c: owl: Add compatible for the Actions Semi S500 I2C controller
  dt-bindings: i2c: owl: Convert Actions Semi Owl binding to a schema
  i2c: imx: support slave mode for imx I2C driver
  i2c: ismt: Adding support for I2C_SMBUS_BLOCK_PROC_CALL
  i2c: ocores: Avoid false-positive error log message.
  Revert "i2c: qcom-geni: Disable DMA processing on the Lenovo Yoga C630"
  i2c: mxs: Remove unneeded platform_device_id
  i2c: pca-platform: drop two members from driver data that are assigned to only
  i2c: imx: Remove unused .id_table support
  i2c: nvidia-gpu: drop empty stub for runtime pm
  dt-bindings: i2c: mellanox,i2c-mlxbf: convert txt to YAML schema
  i2c: mv64xxx: Add bus error recovery
  ...
2020-12-15 15:53:50 -08:00
Linus Torvalds
605ea5aafe spi: Updates for v5.11
The big change this release has been some excellent work from Lukas
 Wunner which closes a bunch of holes in the cleanup paths for drivers,
 mainly introduced as a result of devm conversions causing bad
 interactions with the support SPI has for allocating the bus and driver
 data together.  Together with some of the other work done it feels like
 we've turned the corner on several long standing pain points with the
 API.
 
  - Many cleanups around probe/remove and error handling from Lukas
    Wunner and Uwe Kleine-König, and further fixes around PM from Zhang
    Qilong.
  - Provide a mask for which bits of the mode can safely be configured by
    drivers and use that to fix an issue with the ADS7846 driver.
  - Documentation of the expected interactions between SPI and GPIO level
    chip select polarity configuration from H. Nikolaus Schaller,
    hopefully we're pretty much at the end of sorting out the
    interactions there.  Thanks to Nikolaus, Sven Van Asbroeck and Linus
    Walleij for this.
  - DMA support for Allwinner sun6i controllers.
  - Support for Canaan K210 Designware implementations and Intel Adler Lake.
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Merge tag 'spi-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "The big change this release has been some excellent work from Lukas
  Wunner which closes a bunch of holes in the cleanup paths for drivers,
  mainly introduced as a result of devm conversions causing bad
  interactions with the support SPI has for allocating the bus and
  driver data together.

  Together with some of the other work done it feels like we've turned
  the corner on several long standing pain points with the API.

  Summary:

   - Many cleanups around probe/remove and error handling from Lukas
     Wunner and Uwe Kleine-König, and further fixes around PM from Zhang
     Qilong.

   - Provide a mask for which bits of the mode can safely be configured
     by drivers and use that to fix an issue with the ADS7846 driver.

   - Documentation of the expected interactions between SPI and GPIO
     level chip select polarity configuration from H. Nikolaus Schaller,
     hopefully we're pretty much at the end of sorting out the
     interactions there. Thanks to Nikolaus, Sven Van Asbroeck and Linus
     Walleij for this.

   - DMA support for Allwinner sun6i controllers.

   - Support for Canaan K210 Designware implementations and Intel Adler
     Lake"

* tag 'spi-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (69 commits)
  spi: dt-bindings: clarify CS behavior for spi-cs-high and gpio descriptors
  spi: Limit the spi device max speed to controller's max speed
  spi: spi-geni-qcom: Use the new method of gpio CS control
  platform/chrome: cros_ec_spi: Drop bits_per_word assignment
  platform/chrome: cros_ec_spi: Don't overwrite spi::mode
  spi: dw: Add support for the Canaan K210 SoC SPI
  spi: dw: Add support for 32-bits max xfer size
  dt-bindings: spi: dw-apb-ssi: Add Canaan K210 SPI controller
  spi: Update DT binding docs to support SiFive FU740 SoC
  spi: atmel-quadspi: Fix use-after-free on unbind
  spi: npcm-fiu: Disable clock in probe error path
  spi: ar934x: Don't leak SPI master in probe error path
  spi: mt7621: Don't leak SPI master in probe error path
  spi: mt7621: Disable clock in probe error path
  media: netup_unidvb: Don't leak SPI master in probe error path
  spi: sc18is602: Don't leak SPI master in probe error path
  spi: rb4xx: Don't leak SPI master in probe error path
  spi: gpio: Don't leak SPI master in probe error path
  spi: spi-mtk-nor: Don't leak SPI master in probe error path
  spi: mxic: Don't leak SPI master in probe error path
  ...
2020-12-15 15:51:10 -08:00
Linus Torvalds
2dda5700ef regulator: Updates for v5.11
This has been a quiet release for the regulator API, a few new drivers
 and the usual fixes and cleanup traffic but not much else going on:
 
  - Optimisations for the handling of voltage enumeration, especially
    with sparse selector sets, from Claudiu Beznea.
  - Support for several ARM SCMI regulators, Dialog DA9121, NXP PF8x00,
    Qualcomm PMX55, PM8350 and PM8350c
 
 The addition of the SCMI regulator driver (which controls regulators via
 system firmware) means that we've pulled in the support for the underlying
 firmware operations from the firmware tree.
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Merge tag 'regulator-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "This has been a quiet release for the regulator API, a few new drivers
  and the usual fixes and cleanup traffic but not much else going on:

   - Optimisations for the handling of voltage enumeration, especially
     with sparse selector sets, from Claudiu Beznea.

   - Support for several ARM SCMI regulators, Dialog DA9121, NXP PF8x00,
     Qualcomm PMX55, PM8350 and PM8350c

  The addition of the SCMI regulator driver (which controls regulators
  via system firmware) means that we've pulled in the support for the
  underlying firmware operations from the firmware tree"

* tag 'regulator-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (53 commits)
  regulator: mc13892-regulator: convert comma to semicolon
  regulator: pfuze100: Convert the driver to DT-only
  regulator: max14577: Add proper module aliases strings
  regulator: da9121: Potential Oops in da9121_assign_chip_model()
  regulator: da9121: Fix index used for DT property
  regulator: da9121: Remove uninitialised string variable
  regulator: axp20x: Fix DLDO2 voltage control register mask for AXP22x
  regulator: qcom-rpmh: Add support for PM8350/PM8350c
  regulator: dt-bindings: Add PM8350x compatibles
  regulator: da9121: include linux/gpio/consumer.h
  regulator: da9121: Mark some symbols with static keyword
  regulator: da9121: Request IRQ directly and free in release function to avoid masking race
  regulator: da9121: add interrupt support
  regulator: da9121: add mode support
  regulator: da9121: add current support
  regulator: da9121: Update registration to support multiple buck variants
  regulator: da9121: Add support for device variants via devicetree
  regulator: da9121: Add device variant descriptors
  regulator: da9121: Add device variant regmaps
  regulator: da9121: Add device variants
  ...
2020-12-15 15:48:30 -08:00
Linus Torvalds
a45f1d4331 regmap: Updates for v5.11
This is quite a busy release for regmap with two substantial features
 being added:
 
  - Support for register maps Soundwire 1.2 multi-byte operations,
    allowing atomic support for registers larger than a single byte.
  - Support for relaxed I/O without barriers in MMIO regmaps, allowing
    them to be used efficiently on systems where default MMIO operations
    include barriers.
 
 There was also an addition and revert of use of the new Soundwire
 support for RT715 due to build issues with the driver built in, my tests
 only covered building it as a module, the patch wasn't just dropped as
 it had already been merged elsewhere.
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Merge tag 'regmap-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "This is quite a busy release for regmap with two substantial features
  being added:

    - Support for register maps Soundwire 1.2 multi-byte operations,
      allowing atomic support for registers larger than a single byte.

    - Support for relaxed I/O without barriers in MMIO regmaps, allowing
      them to be used efficiently on systems where default MMIO
      operations include barriers.

  There was also an addition and revert of use of the new Soundwire
  support for RT715 due to build issues with the driver built in, my
  tests only covered building it as a module, the patch wasn't just
  dropped as it had already been merged elsewhere"

* tag 'regmap-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  ASoC: rt715: Fix build
  regmap: sdw: add required header files
  regmap: Remove duplicate `type` field from regmap `regcache_sync` trace event
  regmap: Fix order of regmap write log
  regmap: mmio: add config option to allow relaxed MMIO accesses
2020-12-15 15:34:38 -08:00
Linus Torvalds
2cffa11e2a Generic interrupt and irqchips subsystem:
Core:
 
      - Consolidation and robustness changes for irq time accounting
 
      - Cleanup and consolidation of irq stats
 
      - Remove the fasteoi IPI flow which has been proved useless
 
      - Provide an interface for converting legacy interrupt mechanism into
        irqdomains
 
  Drivers:
 
      The rare event of not having completely new chip driver code, just new
      DT bindings and extensions of existing drivers to accomodate new
      variants!
 
      - Preliminary support for managed interrupts on platform devices
 
      - Correctly identify allocation of MSIs proxyied by another device
 
      - Generalise the Ocelot support to new SoCs
 
      - Improve GICv4.1 vcpu entry, matching the corresponding KVM optimisation
 
      - Work around spurious interrupts on Qualcomm PDC
 
      - Random fixes and cleanups
 
 Thanks,
 
 	tglx
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Merge tag 'irq-core-2020-12-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "Generic interrupt and irqchips subsystem updates. Unusually, there is
  not a single completely new irq chip driver, just new DT bindings and
  extensions of existing drivers to accomodate new variants!

  Core:

   - Consolidation and robustness changes for irq time accounting

   - Cleanup and consolidation of irq stats

   - Remove the fasteoi IPI flow which has been proved useless

   - Provide an interface for converting legacy interrupt mechanism into
     irqdomains

  Drivers:

   - Preliminary support for managed interrupts on platform devices

   - Correctly identify allocation of MSIs proxyied by another device

   - Generalise the Ocelot support to new SoCs

   - Improve GICv4.1 vcpu entry, matching the corresponding KVM
     optimisation

   - Work around spurious interrupts on Qualcomm PDC

   - Random fixes and cleanups"

* tag 'irq-core-2020-12-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  irqchip/qcom-pdc: Fix phantom irq when changing between rising/falling
  driver core: platform: Add devm_platform_get_irqs_affinity()
  ACPI: Drop acpi_dev_irqresource_disabled()
  resource: Add irqresource_disabled()
  genirq/affinity: Add irq_update_affinity_desc()
  irqchip/gic-v3-its: Flag device allocation as proxied if behind a PCI bridge
  irqchip/gic-v3-its: Tag ITS device as shared if allocating for a proxy device
  platform-msi: Track shared domain allocation
  irqchip/ti-sci-intr: Fix freeing of irqs
  irqchip/ti-sci-inta: Fix printing of inta id on probe success
  drivers/irqchip: Remove EZChip NPS interrupt controller
  Revert "genirq: Add fasteoi IPI flow"
  irqchip/hip04: Make IPIs use handle_percpu_devid_irq()
  irqchip/bcm2836: Make IPIs use handle_percpu_devid_irq()
  irqchip/armada-370-xp: Make IPIs use handle_percpu_devid_irq()
  irqchip/gic, gic-v3: Make SGIs use handle_percpu_devid_irq()
  irqchip/ocelot: Add support for Jaguar2 platforms
  irqchip/ocelot: Add support for Serval platforms
  irqchip/ocelot: Add support for Luton platforms
  irqchip/ocelot: prepare to support more SoC
  ...
2020-12-15 15:03:31 -08:00
Linus Torvalds
5b200f5789 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "More MM work: a memcg scalability improvememt"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/lru: revise the comments of lru_lock
  mm/lru: introduce relock_page_lruvec()
  mm/lru: replace pgdat lru_lock with lruvec lock
  mm/swap.c: serialize memcg changes in pagevec_lru_move_fn
  mm/compaction: do page isolation first in compaction
  mm/lru: introduce TestClearPageLRU()
  mm/mlock: remove __munlock_isolate_lru_page()
  mm/mlock: remove lru_lock on TestClearPageMlocked
  mm/vmscan: remove lruvec reget in move_pages_to_lru
  mm/lru: move lock into lru_note_cost
  mm/swap.c: fold vm event PGROTATED into pagevec_move_tail_fn
  mm/memcg: add debug checking in lock_page_memcg
  mm: page_idle_get_page() does not need lru_lock
  mm/rmap: stop store reordering issue on page->mapping
  mm/vmscan: remove unnecessary lruvec adding
  mm/thp: narrow lru locking
  mm/thp: simplify lru_add_page_tail()
  mm/thp: use head for head page in lru_add_page_tail()
  mm/thp: move lru_add_page_tail() to huge_memory.c
2020-12-15 14:55:10 -08:00
Hugh Dickins
15b4473617 mm/lru: revise the comments of lru_lock
Since we changed the pgdat->lru_lock to lruvec->lru_lock, it's time to fix
the incorrect comments in code.  Also fixed some zone->lru_lock comment
error from ancient time.  etc.

I struggled to understand the comment above move_pages_to_lru() (surely
it never calls page_referenced()), and eventually realized that most of
it had got separated from shrink_active_list(): move that comment back.

Link: https://lkml.kernel.org/r/1604566549-62481-20-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Jann Horn <jannh@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00
Alexander Duyck
2a5e4e340b mm/lru: introduce relock_page_lruvec()
Add relock_page_lruvec() to replace repeated same code, no functional
change.

When testing for relock we can avoid the need for RCU locking if we simply
compare the page pgdat and memcg pointers versus those that the lruvec is
holding.  By doing this we can avoid the extra pointer walks and accesses
of the memory cgroup.

In addition we can avoid the checks entirely if lruvec is currently NULL.

[alex.shi@linux.alibaba.com: use page_memcg()]
  Link: https://lkml.kernel.org/r/66d8e79d-7ec6-bfbc-1c82-bf32db3ae5b7@linux.alibaba.com

Link: https://lkml.kernel.org/r/1604566549-62481-19-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00
Alex Shi
6168d0da2b mm/lru: replace pgdat lru_lock with lruvec lock
This patch moves per node lru_lock into lruvec, thus bring a lru_lock for
each of memcg per node.  So on a large machine, each of memcg don't have
to suffer from per node pgdat->lru_lock competition.  They could go fast
with their self lru_lock.

After move memcg charge before lru inserting, page isolation could
serialize page's memcg, then per memcg lruvec lock is stable and could
replace per node lru lock.

In isolate_migratepages_block(), compact_unlock_should_abort and
lock_page_lruvec_irqsave are open coded to work with compact_control.
Also add a debug func in locking which may give some clues if there are
sth out of hands.

Daniel Jordan's testing show 62% improvement on modified readtwice case on
his 2P * 10 core * 2 HT broadwell box.
https://lore.kernel.org/lkml/20200915165807.kpp7uhiw7l3loofu@ca-dmjordan1.us.oracle.com/

Hugh Dickins helped on the patch polish, thanks!

[alex.shi@linux.alibaba.com: fix comment typo]
  Link: https://lkml.kernel.org/r/5b085715-292a-4b43-50b3-d73dc90d1de5@linux.alibaba.com
[alex.shi@linux.alibaba.com: use page_memcg()]
  Link: https://lkml.kernel.org/r/5a4c2b72-7ee8-2478-fc0e-85eb83aafec4@linux.alibaba.com

Link: https://lkml.kernel.org/r/1604566549-62481-18-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rong Chen <rong.a.chen@intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00
Alex Shi
fc574c2355 mm/swap.c: serialize memcg changes in pagevec_lru_move_fn
Hugh Dickins' found a memcg change bug on original version: If we want to
change the pgdat->lru_lock to memcg's lruvec lock, we have to serialize
mem_cgroup_move_account during pagevec_lru_move_fn.  The possible bad
scenario would like:

	cpu 0					cpu 1
lruvec = mem_cgroup_page_lruvec()
					if (!isolate_lru_page())
						mem_cgroup_move_account

spin_lock_irqsave(&lruvec->lru_lock <== wrong lock.

So we need TestClearPageLRU to block isolate_lru_page(), that serializes
the memcg change.  and then removing the PageLRU check in move_fn callee
as the consequence.

__pagevec_lru_add_fn() is different from the others, because the pages it
deals with are, by definition, not yet on the lru.  TestClearPageLRU is
not needed and would not work, so __pagevec_lru_add() goes its own way.

Link: https://lkml.kernel.org/r/1604566549-62481-17-git-send-email-alex.shi@linux.alibaba.com
Reported-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00
Alex Shi
9df4131439 mm/compaction: do page isolation first in compaction
Currently, compaction would get the lru_lock and then do page isolation
which works fine with pgdat->lru_lock, since any page isoltion would
compete for the lru_lock.  If we want to change to memcg lru_lock, we have
to isolate the page before getting lru_lock, thus isoltion would block
page's memcg change which relay on page isoltion too.  Then we could
safely use per memcg lru_lock later.

The new page isolation use previous introduced TestClearPageLRU() + pgdat
lru locking which will be changed to memcg lru lock later.

Hugh Dickins <hughd@google.com> fixed following bugs in this patch's early
version:

Fix lots of crashes under compaction load: isolate_migratepages_block()
must clean up appropriately when rejecting a page, setting PageLRU again
if it had been cleared; and a put_page() after get_page_unless_zero()
cannot safely be done while holding locked_lruvec - it may turn out to be
the final put_page(), which will take an lruvec lock when PageLRU.

And move __isolate_lru_page_prepare back after get_page_unless_zero to
make trylock_page() safe: trylock_page() is not safe to use at this time:
its setting PG_locked can race with the page being freed or allocated
("Bad page"), and can also erase flags being set by one of those "sole
owners" of a freshly allocated page who use non-atomic __SetPageFlag().

Link: https://lkml.kernel.org/r/1604566549-62481-16-git-send-email-alex.shi@linux.alibaba.com
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00
Alex Shi
d25b5bd8a8 mm/lru: introduce TestClearPageLRU()
Currently lru_lock still guards both lru list and page's lru bit, that's
ok.  but if we want to use specific lruvec lock on the page, we need to
pin down the page's lruvec/memcg during locking.  Just taking lruvec lock
first may be undermined by the page's memcg charge/migration.  To fix this
problem, we will clear the lru bit out of locking and use it as pin down
action to block the page isolation in memcg changing.

So now a standard steps of page isolation is following:
	1, get_page(); 	       #pin the page avoid to be free
	2, TestClearPageLRU(); #block other isolation like memcg change
	3, spin_lock on lru_lock; #serialize lru list access
	4, delete page from lru list;

This patch start with the first part: TestClearPageLRU, which combines
PageLRU check and ClearPageLRU into a macro func TestClearPageLRU.  This
function will be used as page isolation precondition to prevent other
isolations some where else.  Then there are may !PageLRU page on lru list,
need to remove BUG() checking accordingly.

There 2 rules for lru bit now:
1, the lru bit still indicate if a page on lru list, just in some
   temporary moment(isolating), the page may have no lru bit when
   it's on lru list.  but the page still must be on lru list when the
   lru bit set.
2, have to remove lru bit before delete it from lru list.

As Andrew Morton mentioned this change would dirty cacheline for a page
which isn't on the LRU.  But the loss would be acceptable in Rong Chen
<rong.a.chen@intel.com> report:
https://lore.kernel.org/lkml/20200304090301.GB5972@shao2-debian/

Link: https://lkml.kernel.org/r/1604566549-62481-15-git-send-email-alex.shi@linux.alibaba.com
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00
Alex Shi
13805a88a9 mm/mlock: remove __munlock_isolate_lru_page()
__munlock_isolate_lru_page() only has one caller, remove it to clean up
and simplify code.

Link: https://lkml.kernel.org/r/1604566549-62481-14-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00
Alex Shi
3db19aa39b mm/mlock: remove lru_lock on TestClearPageMlocked
In the func munlock_vma_page, comments mentained lru_lock needed for
serialization with split_huge_pages.  But the page must be PageLocked as
well as pages in split_huge_page series funcs.  Thus the PageLocked is
enough to serialize both funcs.

Further more, Hugh Dickins pointed: before splitting in
split_huge_page_to_list, the page was unmap_page() to remove pmd/ptes
which protect the page from munlock.  Thus, no needs to guard
__split_huge_page_tail for mlock clean, just keep the lru_lock there for
isolation purpose.

LKP found a preempt issue on __mod_zone_page_state which need change to
mod_zone_page_state.  Thanks!

Link: https://lkml.kernel.org/r/1604566549-62481-13-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jann Horn <jannh@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 14:48:04 -08:00