linux.git/arch/sparc/include, branch v6.10

Merge tag 'sparc-for-6.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc

2024-05-23T19:22:20+00:00

Pull sparc updates from Andreas Larsson:

 - Avoid on-stack cpumask variables in a number of places

 - Move struct termio to asm/termios.h, matching other architectures and
   allowing certain user space applications to build also for sparc

 - Fix missing prototype warnings for sparc64

 - Fix version generation warnings for sparc32

 - Fix bug where non-consecutive CPU IDs lead to some CPUs not starting

 - Simplification using swap and cleanup using NULL for pointer

 - Convert sparc parport and chmc drivers to use remove callbacks
   returning void

* tag 'sparc-for-6.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc:
  sparc/leon: Remove on-stack cpumask var
  sparc/pci_msi: Remove on-stack cpumask var
  sparc/of: Remove on-stack cpumask var
  sparc/irq: Remove on-stack cpumask var
  sparc/srmmu: Remove on-stack cpumask var
  sparc: chmc: Convert to platform remove callback returning void
  sparc: parport: Convert to platform remove callback returning void
  sparc: Compare pointers to NULL instead of 0
  sparc: Use swap() to fix Coccinelle warning
  sparc32: Fix version generation failed warnings
  sparc64: Fix number of online CPUs
  sparc64: Fix prototype warning for sched_clock
  sparc64: Fix prototype warnings in adi_64.c
  sparc64: Fix prototype warning for dma_4v_iotsb_bind
  sparc64: Fix prototype warning for uprobe_trap
  sparc64: Fix prototype warning for alloc_irqstack_bootmem
  sparc64: Fix prototype warning for vmemmap_free
  sparc64: Fix prototype warnings in traps_64.c
  sparc64: Fix prototype warning for init_vdso_image
  sparc: move struct termio to asm/termios.h

Merge tag 'asm-generic-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2024-05-20T22:18:34+00:00

Pull asm-generic cleanups from Arnd Bergmann:
 "These are a few cross-architecture cleanup patches:

   - separate out fbdev support from the asm/video.h contents that may
     be used by either the old fbdev drivers or the newer drm display
     code (Thomas Zimmermann)

   - cleanups for the generic bitops code and asm-generic/bug.h
     (Thorsten Blum)

   - remove the orphaned include/asm-generic/page.h header that used to
     be included by long-removed mmu-less architectures (me)"

* tag 'asm-generic-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  arch: Fix name collision with ACPI's video.o
  bug: Improve comment
  asm-generic: remove unused asm-generic/page.h
  arch: Rename fbdev header and source files
  arch: Remove struct fb_info from video helpers
  arch: Select fbdev helpers with CONFIG_VIDEO
  bitops: Change function return types from long to int

Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-05-19T16:21:03+00:00

Pull mm updates from Andrew Morton:
"The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.
Notable series include:

- Lucas Stach has provided some page-mapping cleanup/consolidation/
maintainability work in the series "mm/treewide: Remove pXd_huge()
API".

- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
one test.

- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being
allocated: number of calls and amount of memory.

- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in
largely similar code sites.

- In his series "mm: page_alloc: freelist migratetype hygiene"
Johannes Weiner has fixed the page allocator's handling of
migratetype requests, with resulting improvements in compaction
efficiency.

- In the series "make the hugetlb migration strategy consistent"
Baolin Wang has fixed a hugetlb migration issue, which should
improve hugetlb allocation reliability.

- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when
memory almost met memcg limit".

- In the series "mm/filemap: optimize folio adding and splitting"
Kairui Song has optimized pagecache insertion, yielding ~10%
performance improvement in one test.

- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".

- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".

- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".

- More cleanups from Matthew Wilcox in the series "Various
page->flags cleanups".

- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".

- More folio conversions and cleanups in Matthew Wilcox's series:
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"

- David Hildenbrand chipped in with "fs/proc/task_mmu: convert
hugetlb functions to work on folis".

- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".

- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".

- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
series "mm/ksm: fix ksm exec support for prctl".

- Baolin Wang has implemented NUMA balancing for multi-size THPs.
This is a simple first-cut implementation for now. The series is
"support multi-size THP numa balancing".

- Cleanups to vma handling helper functions from Matthew Wilcox in
the series "Unify vma_address and vma_pgoff_address".

- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".

- Improvements to the swapping of multi-size THPs from Ryan Roberts
in the series "Swap-out mTHP without splitting".

- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"

- GUP cleanups from David Hildenbrand in "mm/gup: consistently call
it GUP-fast".

- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
path to use struct vm_fault".

- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".

- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes".
Fixes the initialization code so that migration between different
memory types works as intended.

- David Hildenbrand has improved follow_pte() and fixed an errant
driver in the series "mm: follow_pte() improvements and acrn
follow_pte() fixes".

- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".

- Folio conversions in KSM in Alex Shi's series "transfer page to
folio in KSM".

- Barry Song has added some sysfs stats for monitoring multi-size
THP's in the series "mm: add per-order mTHP alloc and swpout
counters".

- Some zswap cleanups from Yosry Ahmed in the series "zswap
same-filled and limit checking cleanups".

- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".

- Multi-size THPs get more work, this time from Lance Yang. His
series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
optimizes the freeing of these things.

- Kemeng Shi has added more userspace-visible writeback
instrumentation in the series "Improve visibility of writeback".

- Kemeng Shi then sent some maintenance work on top in the series
"Fix and cleanups to page-writeback".

- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
the series "Improve anon_vma scalability for anon VMAs". Intel's
test bot reported an improbable 3x improvement in one test.

- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"

- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"

- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as
XFAIL".

- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".

- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking""

* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
selftests: cgroup: add tests to verify the zswap writeback path
mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
mm/damon/core: fix return value from damos_wmark_metric_value
mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
selftests: cgroup: remove redundant enabling of memory controller
Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
Docs/mm/damon/design: use a list for supported filters
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
selftests/damon: classify tests for functionalities and regressions
selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
selftests/damon: add a test for DAMOS quota goal
...

sparc: simplify module_alloc()

2024-05-14T07:31:43+00:00

Define MODULES_VADDR and MODULES_END as VMALLOC_START and VMALLOC_END
for 32-bit and reduce module_alloc() to

	__vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, ...)

as with the new defines the allocations becomes identical for both 32
and 64 bits.

While on it, drop unused include of 

Suggested-by: Sam Ravnborg 
Signed-off-by: Mike Rapoport (IBM) 
Reviewed-by: Sam Ravnborg 
Signed-off-by: Luis Chamberlain

arch: Rename fbdev header and source files

2024-05-03T15:07:50+00:00

The per-architecture fbdev code has no dependencies on fbdev and can
be used for any video-related subsystem. Rename the files to 'video'.
Use video-sti.c on parisc as the source file depends on CONFIG_STI_CORE.

On arc, arm, arm64, sh, and um the asm header file is an empty wrapper
around the file in asm-generic. Let Kbuild generate the file. The build
system does this automatically. Only um needs to generate video.h
explicitly, so that it overrides the host architecture's header. The
latter would otherwise interfere with the build.

Further update all includes statements, include guards, and Makefiles.
Also update a few strings and comments to refer to video instead of
fbdev.

v3:
- arc, arm, arm64, sh: generate asm header via build system (Sam,
Helge, Arnd)
- um: rename fb.h to video.h
- fix typo in commit message (Sam)

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Sam Ravnborg 
Cc: Vineet Gupta 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Huacai Chen 
Cc: WANG Xuerui 
Cc: Geert Uytterhoeven 
Cc: Thomas Bogendoerfer 
Cc: "James E.J. Bottomley" 
Cc: Helge Deller 
Cc: Michael Ellerman 
Cc: Nicholas Piggin 
Cc: Yoshinori Sato 
Cc: Rich Felker 
Cc: John Paul Adrian Glaubitz 
Cc: "David S. Miller" 
Cc: Andreas Larsson 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: Borislav Petkov 
Cc: Dave Hansen 
Cc: x86@kernel.org
Cc: "H. Peter Anvin" 
Signed-off-by: Arnd Bergmann

arch: Remove struct fb_info from video helpers

2024-05-03T15:07:50+00:00

The per-architecture video helpers do not depend on struct fb_info
or anything else from fbdev. Remove it from the interface and replace
fb_is_primary_device() with video_is_primary_device(). The new helper
is similar in functionality, but can operate on non-fbdev devices.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Sam Ravnborg 
Cc: "James E.J. Bottomley" 
Cc: Helge Deller 
Cc: "David S. Miller" 
Cc: Andreas Larsson 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: Borislav Petkov 
Cc: Dave Hansen 
Cc: x86@kernel.org
Cc: "H. Peter Anvin" 
Signed-off-by: Arnd Bergmann

mm: remove "prot" parameter from move_pte()

2024-04-26T03:56:24+00:00

The "prot" parameter is unused, and using it instead of what's stored in
that particular PTE would very likely be wrong.  Let's simply remove it.

Link: https://lkml.kernel.org/r/20240327143301.741807-1-david@redhat.com
Signed-off-by: David Hildenbrand 
Reviewed-by: Vishal Moola (Oracle) 
Cc: "David S. Miller" 
Cc: Andreas Larsson 
Signed-off-by: Andrew Morton

mm/arch: provide pud_pfn() fallback

2024-04-26T03:56:21+00:00

The comment in the code explains the reasons.  We took a different
approach comparing to pmd_pfn() by providing a fallback function.

Another option is to provide some lower level config options (compare to
HUGETLB_PAGE or THP) to identify which layer an arch can support for such
huge mappings.  However that can be an overkill.

[peterx@redhat.com: fix loongson defconfig]
  Link: https://lkml.kernel.org/r/20240403013249.1418299-4-peterx@redhat.com
Link: https://lkml.kernel.org/r/20240327152332.950956-6-peterx@redhat.com
Signed-off-by: Peter Xu 
Reviewed-by: Jason Gunthorpe 
Tested-by: Ryan Roberts 
Cc: Mike Rapoport (IBM) 
Cc: Matthew Wilcox 
Cc: Andrea Arcangeli 
Cc: Andrew Jones 
Cc: Aneesh Kumar K.V (IBM) 
Cc: Axel Rasmussen 
Cc: Christophe Leroy 
Cc: Christoph Hellwig 
Cc: David Hildenbrand 
Cc: James Houghton 
Cc: John Hubbard 
Cc: Kirill A. Shutemov 
Cc: Lorenzo Stoakes 
Cc: Michael Ellerman 
Cc: Muchun Song 
Cc: Rik van Riel 
Cc: Vlastimil Babka 
Cc: Yang Shi 
Signed-off-by: Andrew Morton

sparc: parport: Convert to platform remove callback returning void

2024-04-22T14:51:57+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Reviewed-by: Andreas Larsson 
Link: https://lore.kernel.org/r/2765e090dba2d99f92e16c92b6aa55090aae053b.1712755381.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Andreas Larsson

sparc: Use swap() to fix Coccinelle warning

2024-04-22T14:45:22+00:00

Fixes the following Coccinelle/coccicheck warning reported by
swap.cocci:

	WARNING opportunity for swap()

Signed-off-by: Thorsten Blum 
Reviewed-by: Andreas Larsson 
Link: https://lore.kernel.org/r/20240404112313.11898-2-thorsten.blum@toblux.com
Signed-off-by: Andreas Larsson