| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
- s/alloc_ordered_queue()/alloc_ordered_workqueue()/
- remove markers to convert it into a link.
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt subsystem updates from Thomas Gleixner:
"Core:
- Provide a new mechanism to create interrupt domains. The existing
interfaces have already too many parameters and it's a pain to
expand any of this for new required functionality.
The new function takes a pointer to a data structure as argument.
The data structure combines all existing parameters and allows for
easy extension.
The first extension for this is to handle the instantiation of
generic interrupt chips at the core level and to allow drivers to
provide extra init/exit callbacks.
This is necessary to do the full interrupt chip initialization
before the new domain is published, so that concurrent usage sites
won't see a half initialized interrupt domain. Similar problems
exist on teardown.
This has turned out to be a real problem due to the deferred and
parallel probing which was added in recent years.
Handling this at the core level allows to remove quite some accrued
boilerplate code in existing drivers and avoids horrible
workarounds at the driver level.
- The usual small improvements all over the place
Drivers:
- Add support for LAN966x OIC and RZ/Five SoC
- Split the STM ExtI driver into a microcontroller and a SMP version
to allow building the latter as a module for multi-platform
kernels
- Enable MSI support for Armada 370XP on platforms which do not
support IPIs
- The usual small fixes and enhancements all over the place"
* tag 'irq-core-2024-07-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (59 commits)
irqdomain: Fix the kernel-doc and plug it into Documentation
genirq: Set IRQF_COND_ONESHOT in request_irq()
irqchip/imx-irqsteer: Handle runtime power management correctly
irqchip/gic-v3: Pass #redistributor-regions to gic_of_setup_kvm_info()
irqchip/bcm2835: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND
irqchip/gic-v4: Make sure a VPE is locked when VMAPP is issued
irqchip/gic-v4: Substitute vmovp_lock for a per-VM lock
irqchip/gic-v4: Always configure affinity on VPE activation
Revert "irqchip/dw-apb-ictl: Support building as module"
Revert "Loongarch: Support loongarch avec"
arm64: Kconfig: Allow build irq-stm32mp-exti driver as module
ARM: stm32: Allow build irq-stm32mp-exti driver as module
irqchip/stm32mp-exti: Allow building as module
irqchip/stm32mp-exti: Rename internal symbols
irqchip/stm32-exti: Split MCU and MPU code
arm64: Kconfig: Select STM32MP_EXTI on STM32 platforms
ARM: stm32: Use different EXTI driver on ARMv7m and ARMv7a
irqchip/stm32-exti: Add CONFIG_STM32MP_EXTI
irqchip/dw-apb-ictl: Support building as module
irqchip/riscv-aplic: Simplify the initialization code
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- In the series "mm: Avoid possible overflows in dirty throttling" Jan
Kara addresses a couple of issues in the writeback throttling code.
These fixes are also targetted at -stable kernels.
- Ryusuke Konishi's series "nilfs2: fix potential issues related to
reserved inodes" does that. This should actually be in the
mm-nonmm-stable tree, along with the many other nilfs2 patches. My
bad.
- More folio conversions from Kefeng Wang in the series "mm: convert to
folio_alloc_mpol()"
- Kemeng Shi has sent some cleanups to the writeback code in the series
"Add helper functions to remove repeated code and improve readability
of cgroup writeback"
- Kairui Song has made the swap code a little smaller and a little
faster in the series "mm/swap: clean up and optimize swap cache
index".
- In the series "mm/memory: cleanly support zeropage in
vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David
Hildenbrand has reworked the rather sketchy handling of the use of
the zeropage in MAP_SHARED mappings. I don't see any runtime effects
here - more a cleanup/understandability/maintainablity thing.
- Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling
of higher addresses, for aarch64. The (poorly named) series is
"Restructure va_high_addr_switch".
- The core TLB handling code gets some cleanups and possible slight
optimizations in Bang Li's series "Add update_mmu_tlb_range() to
simplify code".
- Jane Chu has improved the handling of our
fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in
the series "Enhance soft hwpoison handling and injection".
- Jeff Johnson has sent a billion patches everywhere to add
MODULE_DESCRIPTION() to everything. Some landed in this pull.
- In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang
has simplified migration's use of hardware-offload memory copying.
- Yosry Ahmed performs more folio API conversions in his series "mm:
zswap: trivial folio conversions".
- In the series "large folios swap-in: handle refault cases first",
Chuanhua Han inches us forward in the handling of large pages in the
swap code. This is a cleanup and optimization, working toward the end
objective of full support of large folio swapin/out.
- In the series "mm,swap: cleanup VMA based swap readahead window
calculation", Huang Ying has contributed some cleanups and a possible
fixlet to his VMA based swap readahead code.
- In the series "add mTHP support for anonymous shmem" Baolin Wang has
taught anonymous shmem mappings to use multisize THP. By default this
is a no-op - users must opt in vis sysfs controls. Dramatic
improvements in pagefault latency are realized.
- David Hildenbrand has some cleanups to our remaining use of
page_mapcount() in the series "fs/proc: move page_mapcount() to
fs/proc/internal.h".
- David also has some highmem accounting cleanups in the series
"mm/highmem: don't track highmem pages manually".
- Build-time fixes and cleanups from John Hubbard in the series
"cleanups, fixes, and progress towards avoiding "make headers"".
- Cleanups and consolidation of the core pagemap handling from Barry
Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers
and utilize them".
- Lance Yang's series "Reclaim lazyfree THP without splitting" has
reduced the latency of the reclaim of pmd-mapped THPs under fairly
common circumstances. A 10x speedup is seen in a microbenchmark.
It does this by punting to aother CPU but I guess that's a win unless
all CPUs are pegged.
- hugetlb_cgroup cleanups from Xiu Jianfeng in the series
"mm/hugetlb_cgroup: rework on cftypes".
- Miaohe Lin's series "Some cleanups for memory-failure" does just that
thing.
- Someone other than SeongJae has developed a DAMON feature in Honggyu
Kim's series "DAMON based tiered memory management for CXL memory".
This adds DAMON features which may be used to help determine the
efficiency of our placement of CXL/PCIe attached DRAM.
- DAMON user API centralization and simplificatio work in SeongJae
Park's series "mm/damon: introduce DAMON parameters online commit
function".
- In the series "mm: page_type, zsmalloc and page_mapcount_reset()"
David Hildenbrand does some maintenance work on zsmalloc - partially
modernizing its use of pageframe fields.
- Kefeng Wang provides more folio conversions in the series "mm: remove
page_maybe_dma_pinned() and page_mkclean()".
- More cleanup from David Hildenbrand, this time in the series
"mm/memory_hotplug: use PageOffline() instead of PageReserved() for
!ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline()
pages" and permits the removal of some virtio-mem hacks.
- Barry Song's series "mm: clarify folio_add_new_anon_rmap() and
__folio_add_anon_rmap()" is a cleanup to the anon folio handling in
preparation for mTHP (multisize THP) swapin.
- Kefeng Wang's series "mm: improve clear and copy user folio"
implements more folio conversions, this time in the area of large
folio userspace copying.
- The series "Docs/mm/damon/maintaier-profile: document a mailing tool
and community meetup series" tells people how to get better involved
with other DAMON developers. From SeongJae Park.
- A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does
that.
- David Hildenbrand sends along more cleanups, this time against the
migration code. The series is "mm/migrate: move NUMA hinting fault
folio isolation + checks under PTL".
- Jan Kara has found quite a lot of strangenesses and minor errors in
the readahead code. He addresses this in the series "mm: Fix various
readahead quirks".
- SeongJae Park's series "selftests/damon: test DAMOS tried regions and
{min,max}_nr_regions" adds features and addresses errors in DAMON's
self testing code.
- Gavin Shan has found a userspace-triggerable WARN in the pagecache
code. The series "mm/filemap: Limit page cache size to that supported
by xarray" addresses this. The series is marked cc:stable.
- Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations
and cleanup" cleans up and slightly optimizes KSM.
- Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of
code motion. The series (which also makes the memcg-v1 code
Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put
under config option" and "mm: memcg: put cgroup v1-specific memcg
data under CONFIG_MEMCG_V1"
- Dan Schatzberg's series "Add swappiness argument to memory.reclaim"
adds an additional feature to this cgroup-v2 control file.
- The series "Userspace controls soft-offline pages" from Jiaqi Yan
permits userspace to stop the kernel's automatic treatment of
excessive correctable memory errors. In order to permit userspace to
monitor and handle this situation.
- Kefeng Wang's series "mm: migrate: support poison recover from
migrate folio" teaches the kernel to appropriately handle migration
from poisoned source folios rather than simply panicing.
- SeongJae Park's series "Docs/damon: minor fixups and improvements"
does those things.
- In the series "mm/zsmalloc: change back to per-size_class lock"
Chengming Zhou improves zsmalloc's scalability and memory
utilization.
- Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for
pinning memfd folios" makes the GUP code use FOLL_PIN rather than
bare refcount increments. So these paes can first be moved aside if
they reside in the movable zone or a CMA block.
- Andrii Nakryiko has added a binary ioctl()-based API to
/proc/pid/maps for much faster reading of vma information. The series
is "query VMAs from /proc/<pid>/maps".
- In the series "mm: introduce per-order mTHP split counters" Lance
Yang improves the kernel's presentation of developer information
related to multisize THP splitting.
- Michael Ellerman has developed the series "Reimplement huge pages
without hugepd on powerpc (8xx, e500, book3s/64)". This permits
userspace to use all available huge page sizes.
- In the series "revert unconditional slab and page allocator fault
injection calls" Vlastimil Babka removes a performance-affecting and
not very useful feature from slab fault injection.
* tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (411 commits)
mm/mglru: fix ineffective protection calculation
mm/zswap: fix a white space issue
mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio
mm/hugetlb: fix possible recursive locking detected warning
mm/gup: clear the LRU flag of a page before adding to LRU batch
mm/numa_balancing: teach mpol_to_str about the balancing mode
mm: memcg1: convert charge move flags to unsigned long long
alloc_tag: fix page_ext_get/page_ext_put sequence during page splitting
lib: reuse page_ext_data() to obtain codetag_ref
lib: add missing newline character in the warning message
mm/mglru: fix overshooting shrinker memory
mm/mglru: fix div-by-zero in vmpressure_calc_level()
mm/kmemleak: replace strncpy() with strscpy()
mm, page_alloc: put should_fail_alloc_page() back behing CONFIG_FAIL_PAGE_ALLOC
mm, slab: put should_failslab() back behind CONFIG_SHOULD_FAILSLAB
mm: ignore data-race in __swap_writepage
hugetlbfs: ensure generic_hugetlb_get_unmapped_area() returns higher address than mmap_min_addr
mm: shmem: rename mTHP shmem counters
mm: swap_state: use folio_alloc_mpol() in __read_swap_cache_async()
mm/migrate: putback split folios when numa hint migration fails
...
|
|
Pull documentation updates from Jonathan Corbet:
"Nothing hugely exciting happening in the documentation tree this time
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given
translation was last updated.
- A couple of "best practices" suggestions (on Link: tags and
off-list discussions) that were not entirely at consensus level,
but I concluded they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters
that have not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such"
* tag 'docs-6.11' of git://git.lwn.net/linux: (57 commits)
Documentation: Document user_events ioctl code
docs/pinctrl: fix typo in mapping example
docs: maintainer: discourage taking conversations off-list
docs: driver-model: platform: update the definition of platform_driver
docs/sp_SP: Add translation for scheduler/sched-design-CFS.rst
writing_musb_glue_layer.rst: Fix broken URL
zh_CN/admin-guide: one typo fix
docs/zh_CN/virt: Update the translation of guest-halt-polling.rst
Documentation: add reference from dynamic debug to loglevel kernel params
Documentation: best practices for using Link trailers
Documentation: fix links to mailing list services
Documentation: exception-tables.rst: Fix the wrong steps referenced
docs/zh_CN: add process/researcher-guidelines Chinese translation
Documentation/tools/rv: fix document header
docs/sp_SP: Add translation of process/maintainer-kvm-x86.rst
docs/admin-guide/mm: correct typo 'quired' to 'queried'
Add libps2 to the input section of driver-api
Docs/mm/index: move allocation profiling document to unsorted documents chapter
Docs/mm/index: rename 'Legacy Documentation' to 'Unsorted Documentation'
Docs/mm/index: Remove 'Memory Management Guide' chapter marker
...
|
|
There were several undocumented fields in structs irq_domain_ops and
irq_domain_info. Document them.
irq_domain_ops::revmap_size contained "[]" in the description, which is not
allowed in sphinx. Remove that.
Finally, plug the whole header (irqdomain.h) into genericirq.rst, so that
the docs is autogenerated and hyperlinks to these structure are created.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20240712064148.157040-1-jirislaby@kernel.org
|
|
Merge all the slab patches previously collected on top of v6.10-rc1,
over cleanups/fixes that had to be based on rc6.
|
|
There are no more users of page_mkclean(), remove it and update the
document and comment.
Link: https://lkml.kernel.org/r/20240604114822.2089819-5-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
After the last user of page_maybe_dma_pinned() is converted to
folio_maybe_dma_pinned(), remove page_maybe_dma_pinned() and update the
document and comment.
[wangkefeng.wang@huawei.com: fix pin_user_pages.rst underlining]
Link: https://lkml.kernel.org/r/61b256c7-4989-44ec-83db-f34a1bd4be2d@huawei.com
Link: https://lkml.kernel.org/r/20240604114822.2089819-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Slab allocators have been guaranteeing natural alignment for
power-of-two sizes since commit 59bb47985c1d ("mm, sl[aou]b: guarantee
natural alignment for kmalloc(power-of-two)"), while any other sizes are
guaranteed to be aligned only to ARCH_KMALLOC_MINALIGN bytes (although
in practice are aligned more than that in non-debug scenarios).
Rust's allocator API specifies size and alignment per allocation, which
have to satisfy the following rules, per Alice Ryhl [1]:
1. The alignment is a power of two.
2. The size is non-zero.
3. When you round up the size to the next multiple of the alignment,
then it must not overflow the signed type isize / ssize_t.
In order to map this to kmalloc()'s guarantees, some requested
allocation sizes have to be padded to the next power-of-two size [2].
For example, an allocation of size 96 and alignment of 32 will be padded
to an allocation of size 128, because the existing kmalloc-96 bucket
doesn't guarantee alignent above ARCH_KMALLOC_MINALIGN. Without slab
debugging active, the layout of the kmalloc-96 slabs however naturally
align the objects to 32 bytes, so extending the size to 128 bytes is
wasteful.
To improve the situation we can extend the kmalloc() alignment
guarantees in a way that
1) doesn't change the current slab layout (and thus does not increase
internal fragmentation) when slab debugging is not active
2) reduces waste in the Rust allocator use case
3) is a superset of the current guarantee for power-of-two sizes.
The extended guarantee is that alignment is at least the largest
power-of-two divisor of the requested size. For power-of-two sizes the
largest divisor is the size itself, but let's keep this case documented
separately for clarity.
For current kmalloc size buckets, it means kmalloc-96 will guarantee
alignment of 32 bytes and kmalloc-196 will guarantee 64 bytes.
This covers the rules 1 and 2 above of Rust's API as long as the size is
a multiple of the alignment. The Rust layer should now only need to
round up the size to the next multiple if it isn't, while enforcing the
rule 3.
Implementation-wise, this changes the alignment calculation in
create_boot_cache(). While at it also do the calulation only for caches
with the SLAB_KMALLOC flag, because the function is also used to create
the initial kmem_cache and kmem_cache_node caches, where no alignment
guarantee is necessary.
In the Rust allocator's krealloc_aligned(), remove the code that padded
sizes to the next power of two (suggested by Alice Ryhl) as it's no
longer necessary with the new guarantees.
Reported-by: Alice Ryhl <aliceryhl@google.com>
Reported-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/all/CAH5fLggjrbdUuT-H-5vbQfMazjRDpp2%2Bk3%3DYhPyS17ezEqxwcw@mail.gmail.com/ [1]
Link: https://lore.kernel.org/all/CAH5fLghsZRemYUwVvhk77o6y1foqnCeDzW4WZv6ScEWna2+_jw@mail.gmail.com/ [2]
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
|
|
In the paragraph titled "Default flow implementations", the helper
function definition (simplified excerpt) for
noop(struct irq_data *data)
had an extraneous closing parenthesis. This commit removes the
unnecessary parenthesis, correcting the function definition.
Signed-off-by: Chih-Wei Chien <idoleat@taiker.tw>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240619160057.128208-1-idoleat@taiker.tw
|
|
Commit c93f261dfc39 ("Documentation/core-api: add swiotlb documentation")
accidentally refers to CONFIG_DYNAMIC_SWIOTLB in one place, while the
config is actually called CONFIG_SWIOTLB_DYNAMIC.
Correct the reference to the intended config option.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Reviewed-by: Petr Tesarik <petr@tesarici.cz>
Signed-off-by: Christoph Hellwig <hch@lst.de>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more non-mm updates from Andrew Morton:
- A series ("kbuild: enable more warnings by default") from Arnd
Bergmann which enables a number of additional build-time warnings. We
fixed all the fallout which we could find, there may still be a few
stragglers.
- Samuel Holland has developed the series "Unified cross-architecture
kernel-mode FPU API". This does a lot of consolidation of
per-architecture kernel-mode FPU usage and enables the use of newer
AMD GPUs on RISC-V.
- Tao Su has fixed some selftests build warnings in the series
"Selftests: Fix compilation warnings due to missing _GNU_SOURCE
definition".
- This pull also includes a nilfs2 fixup from Ryusuke Konishi.
* tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (23 commits)
nilfs2: make block erasure safe in nilfs_finish_roll_forward()
selftests/harness: use 1024 in place of LINE_MAX
Revert "selftests/harness: remove use of LINE_MAX"
selftests/fpu: allow building on other architectures
selftests/fpu: move FP code to a separate translation unit
drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT
drm/amd/display: only use hard-float, not altivec on powerpc
riscv: add support for kernel-mode FPU
x86: implement ARCH_HAS_KERNEL_FPU_SUPPORT
powerpc: implement ARCH_HAS_KERNEL_FPU_SUPPORT
LoongArch: implement ARCH_HAS_KERNEL_FPU_SUPPORT
lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS
arm64: crypto: use CC_FLAGS_FPU for NEON CFLAGS
arm64: implement ARCH_HAS_KERNEL_FPU_SUPPORT
ARM: crypto: use CC_FLAGS_FPU for NEON CFLAGS
ARM: implement ARCH_HAS_KERNEL_FPU_SUPPORT
arch: add ARCH_HAS_KERNEL_FPU_SUPPORT
x86/fpu: fix asm/fpu/types.h include guard
kbuild: enable -Wcast-function-type-strict unconditionally
kbuild: enable -Wformat-truncation on clang
...
|
|
git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- optimize DMA sync calls when they are no-ops (Alexander Lobakin)
- fix swiotlb padding for untrusted devices (Michael Kelley)
- add documentation for swiotb (Michael Kelley)
* tag 'dma-mapping-6.10-2024-05-20' of git://git.infradead.org/users/hch/dma-mapping:
dma: fix DMA sync for drivers not calling dma_set_mask*()
xsk: use generic DMA sync shortcut instead of a custom one
page_pool: check for DMA sync shortcut earlier
page_pool: don't use driver-set flags field directly
page_pool: make sure frag API fields don't span between cachelines
iommu/dma: avoid expensive indirect calls for sync operations
dma: avoid redundant calls for sync operations
dma: compile-out DMA sync op calls when not used
iommu/dma: fix zeroing of bounce buffer padding used by untrusted devices
swiotlb: remove alloc_size argument to swiotlb_tbl_map_single()
Documentation/core-api: add swiotlb documentation
|
|
Several architectures provide an API to enable the FPU and run
floating-point SIMD code in kernel space. However, the function names,
header locations, and semantics are inconsistent across architectures, and
FPU support may be gated behind other Kconfig options.
provide a standard way for architectures to declare that kernel space
FPU support is available. Architectures selecting this option must
implement what is currently the most common API (kernel_fpu_begin() and
kernel_fpu_end(), plus a new function kernel_fpu_available()) and
provide the appropriate CFLAGS for compiling floating-point C code.
Link: https://lkml.kernel.org/r/20240329072441.591471-2-samuel.holland@sifive.com
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Xuerui <git@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Pull documentation updates from Jonathan Corbet:
"Another not-too-busy cycle for documentation, including:
- Some build-system changes to detect the variable fonts installed by
some distributions that can break the PDF build.
- Various updates and additions to the Spanish, Chinese, Italian, and
Japanese translations.
- Update the stable-kernel rules to match modern practice
... and the usual array of corrections, updates, and typo fixes"
* tag 'docs-6.10' of git://git.lwn.net/linux: (42 commits)
cgroup: Add documentation for missing zswap memory.stat
kernel-doc: Added "*" in $type_constants2 to fix 'make htmldocs' warning.
docs:core-api: fixed typos and grammar in printk-index page
Documentation: tracing: Fix spelling mistakes
docs/zh_CN/rust: Update the translation of quick-start to 6.9-rc4
docs/zh_CN/rust: Update the translation of general-information to 6.9-rc4
docs/zh_CN/rust: Update the translation of coding-guidelines to 6.9-rc4
docs/zh_CN/rust: Update the translation of arch-support to 6.9-rc4
docs: stable-kernel-rules: fix typo sent->send
docs/zh_CN: remove two inconsistent spaces
docs: scripts/check-variable-fonts.sh: Improve commands for detection
docs: stable-kernel-rules: create special tag to flag 'no backporting'
docs: stable-kernel-rules: explain use of stable@kernel.org (w/o @vger.)
docs: stable-kernel-rules: remove code-labels tags and a indention level
docs: stable-kernel-rules: call mainline by its name and change example
docs: stable-kernel-rules: reduce redundancy
docs, kprobes: Add riscv as supported architecture
Docs: typos/spelling
docs: kernel_include.py: Cope with docutils 0.21
docs: ja_JP/howto: Catch up update in v6.8
...
|
|
Signed-off-by: Dennis Lam <dennis.lamerice@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240502212522.4263-1-dennis.lamerice@gmail.com
|
|
Fix spelling and grammar in Docs descriptions
Signed-off-by: Remington Brasga <rbrasga@uci.edu>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240429225527.2329-1-rbrasga@uci.edu
|
|
There's currently no documentation for the swiotlb. Add documentation
describing usage scenarios, the key APIs, and implementation details.
Group the new documentation with other DMA-related documentation.
Signed-off-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Petr Tesarik <petr@tesarici.cz>
Signed-off-by: Christoph Hellwig <hch@lst.de>
|
|
Due to commit 8318d6a6362f ("workqueue: Shorten
events_freezable_power_efficient name") we now have some stale
references in the workqeueue documentation, so updating those
references accordingly.
Signed-off-by: Audra Mitchell <audra@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
|
|
There are bunch of codes in driver like
if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))
Actually it is wrong because if dma_set_mask_and_coherent(64) fails,
dma_set_mask_and_coherent(32) will fail for the same reason.
And dma_set_mask_and_coherent(64) never returns failure.
According to the definition of dma_set_mask(), it indicates the width of
address that device DMA can access. If it can access 64-bit address, it
must access 32-bit address inherently. So only need set biggest address
width.
See below code fragment:
dma_set_mask(mask)
{
mask = (dma_addr_t)mask;
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
arch_dma_set_mask(dev, mask);
*dev->dma_mask = mask;
return 0;
}
dma_supported() will call dma_direct_supported or iommux's dma_supported
call back function.
int dma_direct_supported(struct device *dev, u64 mask)
{
u64 min_mask = (max_pfn - 1) << PAGE_SHIFT;
/*
* Because 32-bit DMA masks are so common we expect every architecture
* to be able to satisfy them - either by not supporting more physical
* memory, or by providing a ZONE_DMA32. If neither is the case, the
* architecture needs to use an IOMMU instead of the direct mapping.
*/
if (mask >= DMA_BIT_MASK(32))
return 1;
...
}
The iommux's dma_supported() actually means iommu requires devices's
minimized dma capability.
An example:
static int sba_dma_supported( struct device *dev, u64 mask)()
{
...
* check if mask is >= than the current max IO Virt Address
* The max IO Virt address will *always* < 30 bits.
*/
return((int)(mask >= (ioc->ibase - 1 +
(ioc->pdir_size / sizeof(u64) * IOVP_SIZE) )));
...
}
1 means supported. 0 means unsupported.
Correct document to make it more clear and provide correct sample code.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
[jc: fixed then/than typo]
Link: https://lore.kernel.org/r/20240401174159.642998-1-Frank.Li@nxp.com
|
|
Pull workqueue updates from Tejun Heo:
"This cycle, a lot of workqueue changes including some that are
significant and invasive.
- During v6.6 cycle, unbound workqueues were updated so that they are
more topology aware and flexible, which among other things improved
workqueue behavior on modern multi-L3 CPUs. In the process, commit
636b927eba5b ("workqueue: Make unbound workqueues to use per-cpu
pool_workqueues") switched unbound workqueues to use per-CPU
frontend pool_workqueues as a part of increasing front-back mapping
flexibility.
An unwelcome side effect of this change was that this made max
concurrency enforcement per-CPU blowing up the maximum number of
allowed concurrent executions. I incorrectly assumed that this
wouldn't cause practical problems as most unbound workqueue users
are self-regulate max concurrency; however, there definitely are
which don't (e.g. on IO paths) and the drastic increase in the
allowed max concurrency led to noticeable perf regressions in some
use cases.
This is now addressed by separating out max concurrency enforcement
to a separate struct - wq_node_nr_active - which makes @max_active
consistently mean system-wide max concurrency regardless of the
number of CPUs or (finally) NUMA nodes. This is a rather invasive
and, in places, a bit clunky; however, the clunkiness rises from
the the inherent requirement to handle the disagreement between the
execution locality domain and max concurrency enforcement domain on
some modern machines.
See commit 5797b1c18919 ("workqueue: Implement system-wide
nr_active enforcement for unbound workqueues") for more details.
- BH workqueue support is added.
They are similar to per-CPU workqueues but execute work items in
the softirq context. This is expected to replace tasklet. However,
currently, it's missing the ability to disable and enable work
items which is needed to convert many tasklet users. To avoid
crowding this merge window too much, this will be included in the
next merge window. A separate pull request will be sent for the
couple conversion patches that are currently pending.
- Waiman plugged a long-standing hole in workqueue CPU isolation
where ordered workqueues didn't follow wq_unbound_cpumask updates.
Ordered workqueues now follow the same rules as other unbound
workqueues.
- More CPU isolation improvements: Juri fixed another deficit in
workqueue isolation where unbound rescuers don't respect
wq_unbound_cpumask. Leonardo fixed delayed_work timers firing on
isolated CPUs.
- Other misc changes"
* tag 'wq-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (54 commits)
workqueue: Drain BH work items on hot-unplugged CPUs
workqueue: Introduce from_work() helper for cleaner callback declarations
workqueue: Control intensive warning threshold through cmdline
workqueue: Make @flags handling consistent across set_work_data() and friends
workqueue: Remove clear_work_data()
workqueue: Factor out work_grab_pending() from __cancel_work_sync()
workqueue: Clean up enum work_bits and related constants
workqueue: Introduce work_cancel_flags
workqueue: Use variable name irq_flags for saving local irq flags
workqueue: Reorganize flush and cancel[_sync] functions
workqueue: Rename __cancel_work_timer() to __cancel_timer_sync()
workqueue: Use rcu_read_lock_any_held() instead of rcu_read_lock_held()
workqueue: Cosmetic changes
workqueue, irq_work: Build fix for !CONFIG_IRQ_WORK
workqueue: Fix queue_work_on() with BH workqueues
async: Use a dedicated unbound workqueue with raised min_active
workqueue: Implement workqueue_set_min_active()
workqueue: Fix kernel-doc comment of unplug_oldest_pwq()
workqueue: Bind unbound workqueue rescuer to wq_unbound_cpumask
kernel/workqueue: Let rescuers follow unbound wq cpumask changes
...
|
|
5c0338c68706 ("workqueue: restore WQ_UNBOUND/max_active==1 to be ordered")
automoatically promoted UNBOUND workqueues w/ @max_active==1 to ordered
workqueues because UNBOUND workqueues w/ @max_active==1 used to be the way
to create ordered workqueues and the new NUMA support broke it. These
problems can be subtle and the fact that they can only trigger on NUMA
machines made them even more difficult to debug.
However, overloading the UNBOUND allocation interface this way creates other
issues. It's difficult to tell whether a given workqueue actually needs to
be ordered and users that legitimately want a min concurrency level wq
unexpectedly gets an ordered one instead. With planned UNBOUND workqueue
udpates to improve execution locality and more prevalence of chiplet designs
which can benefit from such improvements, this isn't a state we wanna be in
forever.
There aren't that many UNBOUND w/ @max_active==1 users in the tree and the
preceding patches audited all and converted them to
alloc_ordered_workqueue() as appropriate. This patch removes the implicit
promotion of UNBOUND w/ @max_active==1 workqueues to ordered ones.
v2: v1 patch incorrectly dropped !list_empty(&wq->pwqs) condition in
apply_workqueue_attrs_locked() which spuriously triggers WARNING and
fails workqueue creation. Fix it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://lore.kernel.org/oe-lkp/202304251050.45a5df1f-oliver.sang@intel.com
|
|
The only generic interface to execute asynchronously in the BH context is
tasklet; however, it's marked deprecated and has some design flaws such as
the execution code accessing the tasklet item after the execution is
complete which can lead to subtle use-after-free in certain usage scenarios
and less-developed flush and cancel mechanisms.
This patch implements BH workqueues which share the same semantics and
features of regular workqueues but execute their work items in the softirq
context. As there is always only one BH execution context per CPU, none of
the concurrency management mechanisms applies and a BH workqueue can be
thought of as a convenience wrapper around softirq.
Except for the inability to sleep while executing and lack of max_active
adjustments, BH workqueues and work items should behave the same as regular
workqueues and work items.
Currently, the execution is hooked to tasklet[_hi]. However, the goal is to
convert all tasklet users over to BH workqueues. Once the conversion is
complete, tasklet can be removed and BH workqueues can directly take over
the tasklet softirqs.
system_bh[_highpri]_wq are added. As queue-wide flushing doesn't exist in
tasklet, all existing tasklet users should be able to use the system BH
workqueues without creating their own workqueues.
v3: - Add missing interrupt.h include.
v2: - Instead of using tasklets, hook directly into its softirq action
functions - tasklet[_hi]_action(). This is slightly cheaper and closer
to the eventual code structure we want to arrive at. Suggested by Lai.
- Lai also pointed out several places which need NULL worker->task
handling or can use clarification. Updated.
Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/CAHk-=wjDW53w4-YcSmgKC5RruiRLHmJ1sXeYdp_ZgVoBw=5byA@mail.gmail.com
Tested-by: Allen Pais <allen.lkml@gmail.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
|
|
Pull documentation fixes from Jonathan Corbet:
"A handful of late-arriving documentation fixes"
* tag 'docs-6.8-2' of git://git.lwn.net/linux:
docs, kprobes: Add loongarch as supported architecture
docs, kprobes: Update email address of Masami Hiramatsu
docs: admin-guide: hw_random: update rng-tools website
Documentation/core-api: fix spelling mistake in workqueue
docs: kernel_feat.py: fix potential command injection
Documentation: constrain alabaster package to older versions
|
|
Pull drm updates from Dave Airlie:
"This contains two major new drivers:
- imagination is a first driver for Imagination Technologies devices,
it only covers very specific devices, but there is hope to grow it
- xe is a reboot of the i915 GPU (shares display) side using a more
upstream focused development model, and trying to maximise code
sharing. It's not enabled for any hw by default, and will hopefully
get switched on for Intel's Lunarlake.
This also drops a bunch of the old UMS ioctls. It's been dead long
enough.
amdgpu has a bunch of new color management code that is being used in
the Steam Deck.
amdgpu also has a new ACPI WBRF interaction to help avoid radio
interference.
Otherwise it's the usual lots of changes in lots of places.
Detailed summary:
new drivers:
- imagination - new driver for Imagination Technologies GPU
- xe - new driver for Intel GPUs using core drm concepts
core:
- add CLOSE_FB ioctl
- remove old UMS ioctls
- increase max objects to accomodate AMD color mgmt
encoder:
- create per-encoder debugfs directory
edid:
- split out drm_eld
- SAD helpers
- drop edid_firmware module parameter
format-helper:
- cache format conversion buffers
sched:
- move from kthread to workqueue
- rename some internals
- implement dynamic job-flow control
gpuvm:
- provide more features to handle GEM objects
client:
- don't acquire module reference
displayport:
- add mst path property documentation
fdinfo:
- alignment fix
dma-buf:
- add fence timestamp helper
- add fence deadline support
bridge:
- transparent aux-bridge for DP/USB-C
- lt8912b: add suspend/resume support and power regulator support
panel:
- edp: AUO B116XTN02, BOE NT116WHM-N21,836X2, NV116WHM-N49
- chromebook panel support
- elida-kd35t133: rework pm
- powkiddy RK2023 panel
- himax-hx8394: drop prepare/unprepare and shutdown logic
- BOE BP101WX1-100, Powkiddy X55, Ampire AM8001280G
- Evervision VGG644804, SDC ATNA45AF01
- nv3052c: register docs, init sequence fixes, fascontek FS035VG158
- st7701: Anbernic RG-ARC support
- r63353 panel controller
- Ilitek ILI9805 panel controller
- AUO G156HAN04.0
simplefb:
- support memory regions
- support power domains
amdgpu:
- add new 64-bit sequence number infrastructure
- add AMD specific color management
- ACPI WBRF support for RF interference handling
- GPUVM updates
- RAS updates
- DCN 3.5 updates
- Rework PCIe link speed handling
- Document GPU reset types
- DMUB fixes
- eDP fixes
- NBIO 7.9/7.11 updates
- SubVP updates
- XGMI PCIe state dumping for aqua vanjaram
- GFX11 golden register updates
- enable tunnelling on high pri compute
amdkfd:
- Migrate TLB flushing logic to amdgpu
- Trap handler fixes
- Fix restore workers handling on suspend/resume
- Fix possible memory leak in pqm_uninit()
- support import/export of dma-bufs using GEM handles
radeon:
- fix possible overflows in command buffer checking
- check for errors in ring_lock
i915:
- reorg display code for reuse in xe driver
- fdinfo memory stats printing
- DP MST bandwidth mgmt improvements
- DP panel replay enabling
- MTL C20 phy state verification
- MTL DP DSC fractional bpp support
- Audio fastset support
- use dma_fence interfaces instead of i915_sw_fence
- Separate gem and display code
- AUX register macro refactoring
- Separate display module/device parameters
- Move display capabilities debugfs under display
- Makefile cleanups
- Register cleanups
- Move display lock inits under display/
- VLV/CHV DPIO PHY register and interface refactoring
- DSI VBT sequence refactoring
- C10/C20 PHY PLL hardware readout
- DPLL code cleanups
- Cleanup PXP plane protection checks
- Improve display debug msgs
- PSR selective fetch fixes/improvements
- DP MST fixes
- Xe2LPD FBC restrictions removed
- DGFX uses direct VBT pin mapping
- more MTL WAs
- fix MTL eDP bug
- eliminate use of kmap_atomic
habanalabs:
- sysfs entry to identify a device minor id with debugfs path
- sysfs entry to expose device module id
- add signed device info retrieval through INFO ioctl
- add Gaudi2C device support
- pcie reset prepare/done hooks
msm:
- Add support for SDM670, SM8650
- Handle the CFG interconnect to fix the obscure hangs / timeouts
- Kconfig fix for QMP dependency
- use managed allocators
- DPU: SDM670, SM8650 support
- DPU: Enable SmartDMA on SM8350 and SM8450
- DP: enable runtime PM support
- GPU: add metadata UAPI
- GPU: move devcoredumps to GPU device
- GPU: convert to drm_exec
ivpu:
- update FW API
- new debugfs file
- a new NOP job submission test mode
- improve suspend/resume
- PM improvements
- MMU PT optimizations
- firmware profile frequency support
- support for uncached buffers
- switch to gem shmem helpers
- replace kthread with threaded irqs
rockchip:
- rk3066_hdmi: convert to atomic
- vop2: support nv20 and nv30
- rk3588 support
mediatek:
- use devm_platform_ioremap_resource
- stop using iommu_present
- MT8188 VDOSYS1 display support
panfrost:
- PM improvements
- improve interrupt handling as poweroff
qaic:
- allow to run with single MSI
- support host/device time sync
- switch to persistent DRM devices
exynos:
- fix potential error pointer dereference
- fix wrong error checking
- add missing call to drm_atomic_helper_shutdown
omapdrm:
- dma-fence lockdep annotation fix
tidss:
- dma-fence lockdep annotation fix
- support for AM62A7
v3d:
- BCM2712 - rpi5 support
- fdinfo + gputop support
- uapi for CPU job handling
virtio-gpu:
- add context debug name"
* tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm: (2340 commits)
drm/amd/display: Allow z8/z10 from driver
drm/amd/display: fix bandwidth validation failure on DCN 2.1
drm/amdgpu: apply the RV2 system aperture fix to RN/CZN as well
drm/amd/display: Move fixpt_from_s3132 to amdgpu_dm
drm/amd/display: Fix recent checkpatch errors in amdgpu_dm
Revert "drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole"
drm/amd/display: avoid stringop-overflow warnings for dp_decide_lane_settings()
drm/amd/display: Fix power_helpers.c codestyle
drm/amd/display: Fix hdcp_log.h codestyle
drm/amd/display: Fix hdcp2_execution.c codestyle
drm/amd/display: Fix hdcp_psp.h codestyle
drm/amd/display: Fix freesync.c codestyle
drm/amd/display: Fix hdcp_psp.c codestyle
drm/amd/display: Fix hdcp1_execution.c codestyle
drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
drm/amdkfd: Fix iterator used outside loop in 'kfd_add_peer_prop()'
drm/amdgpu: Drop 'fence' check in 'to_amdgpu_amdkfd_fence()'
drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c
drm/amdgpu: Fix '*fw' from request_firmware() not released in 'amdgpu_ucode_request()'
drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()'
...
|
|
Pull documentation update from Jonathan Corbet:
"Another moderately busy cycle for documentation, including:
- The minimum Sphinx requirement has been raised to 2.4.4, following
a warning that was added in 6.2
- Some reworking of the Documentation/process front page to,
hopefully, make it more useful
- Various kernel-doc tweaks to, for example, make it deal properly
with __counted_by annotations
- We have also restored a warning for documentation of nonexistent
structure members that disappeared a while back. That had the
delightful consequence of adding some 600 warnings to the docs
build. A sustained effort by Randy, Vegard, and myself has
addressed almost all of those, bringing the documentation back into
sync with the code. The fixes are going through the appropriate
maintainer trees
- Various improvements to the HTML rendered docs, including automatic
links to Git revisions and a nice new pulldown to make translations
easy to access
- Speaking of translations, more of those for Spanish and Chinese
... plus the usual stream of documentation updates and typo fixes"
* tag 'docs-6.8' of git://git.lwn.net/linux: (57 commits)
MAINTAINERS: use tabs for indent of CONFIDENTIAL COMPUTING THREAT MODEL
A reworked process/index.rst
ring-buffer/Documentation: Add documentation on buffer_percent file
Translated the RISC-V architecture boot documentation.
Docs: remove mentions of fdformat from util-linux
Docs/zh_CN: Fix the meaning of DEBUG to pr_debug()
Documentation: move driver-api/dcdbas to userspace-api/
Documentation: move driver-api/isapnp to userspace-api/
Documentation/core-api : fix typo in workqueue
Documentation/trace: Fixed typos in the ftrace FLAGS section
kernel-doc: handle a void function without producing a warning
scripts/get_abi.pl: ignore some temp files
docs: kernel_abi.py: fix command injection
scripts/get_abi: fix source path leak
CREDITS, MAINTAINERS, docs/process/howto: Update man-pages' maintainer
docs: translations: add translations links when they exist
kernel-doc: Align quick help and the code
MAINTAINERS: add reviewer for Spanish translations
docs: ignore __counted_by attribute in structure definitions
scripts: kernel-doc: Clarify missing struct member description
..
|
|
Correct to "following" from "followings" in the sentence "The followings
are the read bandwidths and CPU utilizations depending on different affinity
scope settings on ``kcryptd`` measured over five runs."
Signed-off-by: Attreyee Mukherjee <tintinm2017@gmail.com& |
