mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 21:51:40 +00:00
7fa8a8ee94
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page().
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive rather
than exclusive, and has fixed a bunch of errors which were caused by its
unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
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Merge tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj
Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page()
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive
rather than exclusive, and has fixed a bunch of errors which were
caused by its unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics
flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim
accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
* tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits)
mm,unmap: avoid flushing TLB in batch if PTE is inaccessible
shmem: restrict noswap option to initial user namespace
mm/khugepaged: fix conflicting mods to collapse_file()
sparse: remove unnecessary 0 values from rc
mm: move 'mmap_min_addr' logic from callers into vm_unmapped_area()
hugetlb: pte_alloc_huge() to replace huge pte_alloc_map()
maple_tree: fix allocation in mas_sparse_area()
mm: do not increment pgfault stats when page fault handler retries
zsmalloc: allow only one active pool compaction context
selftests/mm: add new selftests for KSM
mm: add new KSM process and sysfs knobs
mm: add new api to enable ksm per process
mm: shrinkers: fix debugfs file permissions
mm: don't check VMA write permissions if the PTE/PMD indicates write permissions
migrate_pages_batch: fix statistics for longterm pin retry
userfaultfd: use helper function range_in_vma()
lib/show_mem.c: use for_each_populated_zone() simplify code
mm: correct arg in reclaim_pages()/reclaim_clean_pages_from_list()
fs/buffer: convert create_page_buffers to folio_create_buffers
fs/buffer: add folio_create_empty_buffers helper
...
411 lines
11 KiB
Plaintext
411 lines
11 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config PGTABLE_LEVELS
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int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
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range 3 4 if !IA64_PAGE_SIZE_64KB
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default 3
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menu "Processor type and features"
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|
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config IA64
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bool
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select ARCH_BINFMT_ELF_EXTRA_PHDRS
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select ARCH_HAS_DMA_MARK_CLEAN
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select ARCH_HAS_STRNCPY_FROM_USER
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select ARCH_HAS_STRNLEN_USER
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select ARCH_MIGHT_HAVE_PC_PARPORT
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select ARCH_MIGHT_HAVE_PC_SERIO
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select ACPI
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select ACPI_NUMA if NUMA
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select ARCH_ENABLE_MEMORY_HOTPLUG
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select ARCH_ENABLE_MEMORY_HOTREMOVE
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select ARCH_SUPPORTS_ACPI
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select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
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select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
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select FORCE_PCI
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select PCI_DOMAINS if PCI
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select PCI_MSI
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select PCI_SYSCALL if PCI
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select HAS_IOPORT
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select HAVE_ASM_MODVERSIONS
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select HAVE_UNSTABLE_SCHED_CLOCK
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select HAVE_EXIT_THREAD
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select HAVE_KPROBES
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select HAVE_KRETPROBES
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
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select HAVE_FUNCTION_TRACER
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select HAVE_SETUP_PER_CPU_AREA
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select TTY
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select HAVE_ARCH_TRACEHOOK
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select HAVE_FUNCTION_DESCRIPTORS
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select HAVE_VIRT_CPU_ACCOUNTING
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select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
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select GENERIC_IRQ_PROBE
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select GENERIC_PENDING_IRQ if SMP
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select GENERIC_IRQ_SHOW
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select GENERIC_IRQ_LEGACY
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select GENERIC_IOMAP
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select GENERIC_SMP_IDLE_THREAD
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select ARCH_TASK_STRUCT_ON_STACK
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select ARCH_TASK_STRUCT_ALLOCATOR
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select ARCH_THREAD_STACK_ALLOCATOR
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select ARCH_CLOCKSOURCE_DATA
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select GENERIC_TIME_VSYSCALL
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select LEGACY_TIMER_TICK
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select SWIOTLB
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select SYSCTL_ARCH_UNALIGN_NO_WARN
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select HAVE_MOD_ARCH_SPECIFIC
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select MODULES_USE_ELF_RELA
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select ARCH_USE_CMPXCHG_LOCKREF
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select HAVE_ARCH_AUDITSYSCALL
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select NEED_DMA_MAP_STATE
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select NEED_SG_DMA_LENGTH
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select NUMA if !FLATMEM
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select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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select ZONE_DMA32
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select FUNCTION_ALIGNMENT_32B
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default y
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help
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The Itanium Processor Family is Intel's 64-bit successor to
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the 32-bit X86 line. The IA-64 Linux project has a home
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page at <http://www.linuxia64.org/> and a mailing list at
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<linux-ia64@vger.kernel.org>.
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config 64BIT
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bool
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select ATA_NONSTANDARD if ATA
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default y
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config MMU
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bool
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default y
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config STACKTRACE_SUPPORT
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def_bool y
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config GENERIC_LOCKBREAK
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def_bool n
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config DMI
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bool
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default y
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select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
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config EFI
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bool
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select UCS2_STRING
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default y
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config SCHED_OMIT_FRAME_POINTER
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bool
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default y
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config IA64_UNCACHED_ALLOCATOR
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bool
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select GENERIC_ALLOCATOR
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config ARCH_USES_PG_UNCACHED
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def_bool y
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depends on IA64_UNCACHED_ALLOCATOR
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config AUDIT_ARCH
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bool
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default y
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choice
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prompt "Processor type"
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default ITANIUM
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config ITANIUM
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bool "Itanium"
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help
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Select your IA-64 processor type. The default is Itanium.
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This choice is safe for all IA-64 systems, but may not perform
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optimally on systems with, say, Itanium 2 or newer processors.
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config MCKINLEY
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bool "Itanium 2"
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help
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Select this to configure for an Itanium 2 (McKinley) processor.
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endchoice
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choice
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prompt "Kernel page size"
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default IA64_PAGE_SIZE_16KB
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config IA64_PAGE_SIZE_4KB
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bool "4KB"
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help
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This lets you select the page size of the kernel. For best IA-64
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performance, a page size of 8KB or 16KB is recommended. For best
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IA-32 compatibility, a page size of 4KB should be selected (the vast
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majority of IA-32 binaries work perfectly fine with a larger page
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size). For Itanium 2 or newer systems, a page size of 64KB can also
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be selected.
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4KB For best IA-32 compatibility
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8KB For best IA-64 performance
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16KB For best IA-64 performance
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64KB Requires Itanium 2 or newer processor.
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If you don't know what to do, choose 16KB.
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config IA64_PAGE_SIZE_8KB
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bool "8KB"
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config IA64_PAGE_SIZE_16KB
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bool "16KB"
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config IA64_PAGE_SIZE_64KB
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depends on !ITANIUM
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bool "64KB"
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endchoice
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source "kernel/Kconfig.hz"
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config IA64_BRL_EMU
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bool
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depends on ITANIUM
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default y
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# align cache-sensitive data to 128 bytes
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config IA64_L1_CACHE_SHIFT
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int
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default "7" if MCKINLEY
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default "6" if ITANIUM
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config IA64_SGI_UV
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bool "SGI-UV support"
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help
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Selecting this option will add specific support for running on SGI
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UV based systems. If you have an SGI UV system or are building a
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distro kernel, select this option.
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config IA64_HP_SBA_IOMMU
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bool "HP SBA IOMMU support"
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select DMA_OPS
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default y
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help
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Say Y here to add support for the SBA IOMMU found on HP zx1 and
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sx1000 systems. If you're unsure, answer Y.
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config IA64_CYCLONE
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bool "Cyclone (EXA) Time Source support"
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help
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Say Y here to enable support for IBM EXA Cyclone time source.
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If you're unsure, answer N.
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config ARCH_FORCE_MAX_ORDER
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int
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default "16" if HUGETLB_PAGE
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default "10"
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config SMP
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bool "Symmetric multi-processing support"
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help
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more
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than one CPU, say Y.
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If you say N here, the kernel will run on single and multiprocessor
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systems, but will use only one CPU of a multiprocessor system. If
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you say Y here, the kernel will run on many, but not all,
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single processor systems. On a single processor system, the kernel
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will run faster if you say N here.
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See also the SMP-HOWTO available at
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<http://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config NR_CPUS
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int "Maximum number of CPUs (2-4096)"
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range 2 4096
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depends on SMP
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default "4096"
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help
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You should set this to the number of CPUs in your system, but
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keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
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only use 2 CPUs on a >2 CPU system. Setting this to a value larger
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than 64 will cause the use of a CPU mask array, causing a small
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performance hit.
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SMP
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default n
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help
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Say Y here to experiment with turning CPUs off and on. CPUs
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can be controlled through /sys/devices/system/cpu/cpu#.
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Say N if you want to disable CPU hotplug.
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config SCHED_SMT
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bool "SMT scheduler support"
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depends on SMP
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help
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Improves the CPU scheduler's decision making when dealing with
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Intel IA64 chips with MultiThreading at a cost of slightly increased
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overhead in some places. If unsure say N here.
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config PERMIT_BSP_REMOVE
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bool "Support removal of Bootstrap Processor"
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depends on HOTPLUG_CPU
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default n
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help
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Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
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support.
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config FORCE_CPEI_RETARGET
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bool "Force assumption that CPEI can be re-targeted"
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depends on PERMIT_BSP_REMOVE
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default n
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help
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Say Y if you need to force the assumption that CPEI can be re-targeted to
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any cpu in the system. This hint is available via ACPI 3.0 specifications.
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Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
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This option it useful to enable this feature on older BIOS's as well.
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You can also enable this by using boot command line option force_cpei=1.
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config ARCH_SELECT_MEMORY_MODEL
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def_bool y
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config ARCH_FLATMEM_ENABLE
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def_bool y
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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select SPARSEMEM_VMEMMAP_ENABLE
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config ARCH_SPARSEMEM_DEFAULT
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def_bool y
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depends on ARCH_SPARSEMEM_ENABLE
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config NUMA
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bool "NUMA support"
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depends on !FLATMEM
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select SMP
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select USE_PERCPU_NUMA_NODE_ID
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help
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Say Y to compile the kernel to support NUMA (Non-Uniform Memory
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Access). This option is for configuring high-end multiprocessor
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server systems. If in doubt, say N.
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config NODES_SHIFT
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int "Max num nodes shift(3-10)"
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range 3 10
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default "10"
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depends on NUMA
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help
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This option specifies the maximum number of nodes in your SSI system.
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MAX_NUMNODES will be 2^(This value).
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If in doubt, use the default.
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config HAVE_ARCH_NODEDATA_EXTENSION
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def_bool y
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depends on NUMA
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config HAVE_MEMORYLESS_NODES
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def_bool NUMA
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config ARCH_PROC_KCORE_TEXT
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def_bool y
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depends on PROC_KCORE
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config IA64_MCA_RECOVERY
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bool "MCA recovery from errors other than TLB."
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config IA64_PALINFO
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tristate "/proc/pal support"
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help
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If you say Y here, you are able to get PAL (Processor Abstraction
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Layer) information in /proc/pal. This contains useful information
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about the processors in your systems, such as cache and TLB sizes
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and the PAL firmware version in use.
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To use this option, you have to ensure that the "/proc file system
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support" (CONFIG_PROC_FS) is enabled, too.
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config IA64_MC_ERR_INJECT
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tristate "MC error injection support"
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help
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Adds support for MC error injection. If enabled, the kernel
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will provide a sysfs interface for user applications to
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call MC error injection PAL procedures to inject various errors.
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This is a useful tool for MCA testing.
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If you're unsure, do not select this option.
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config IA64_ESI
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bool "ESI (Extensible SAL Interface) support"
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help
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If you say Y here, support is built into the kernel to
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make ESI calls. ESI calls are used to support vendor-specific
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firmware extensions, such as the ability to inject memory-errors
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for test-purposes. If you're unsure, say N.
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config IA64_HP_AML_NFW
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bool "Support ACPI AML calls to native firmware"
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help
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This driver installs a global ACPI Operation Region handler for
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region 0xA1. AML methods can use this OpRegion to call arbitrary
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native firmware functions. The driver installs the OpRegion
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handler if there is an HPQ5001 device or if the user supplies
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the "force" module parameter, e.g., with the "aml_nfw.force"
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kernel command line option.
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config KEXEC
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bool "kexec system call"
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depends on !SMP || HOTPLUG_CPU
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select KEXEC_CORE
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help
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|
kexec is a system call that implements the ability to shutdown your
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|
current kernel, and to start another kernel. It is like a reboot
|
|
but it is independent of the system firmware. And like a reboot
|
|
you can start any kernel with it, not just Linux.
|
|
|
|
The name comes from the similarity to the exec system call.
|
|
|
|
It is an ongoing process to be certain the hardware in a machine
|
|
is properly shutdown, so do not be surprised if this code does not
|
|
initially work for you. As of this writing the exact hardware
|
|
interface is strongly in flux, so no good recommendation can be
|
|
made.
|
|
|
|
config CRASH_DUMP
|
|
bool "kernel crash dumps"
|
|
depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
|
|
help
|
|
Generate crash dump after being started by kexec.
|
|
|
|
endmenu
|
|
|
|
menu "Power management and ACPI options"
|
|
|
|
source "kernel/power/Kconfig"
|
|
|
|
source "drivers/acpi/Kconfig"
|
|
|
|
if PM
|
|
menu "CPU Frequency scaling"
|
|
source "drivers/cpufreq/Kconfig"
|
|
endmenu
|
|
endif
|
|
|
|
endmenu
|
|
|
|
config MSPEC
|
|
tristate "Memory special operations driver"
|
|
depends on IA64
|
|
select IA64_UNCACHED_ALLOCATOR
|
|
help
|
|
If you have an ia64 and you want to enable memory special
|
|
operations support (formerly known as fetchop), say Y here,
|
|
otherwise say N.
|