mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
beace86e61
- The 4 patch series "mm: ksm: prevent KSM from breaking merging of new
VMAs" from Lorenzo Stoakes addresses an issue with KSM's
PR_SET_MEMORY_MERGE mode: newly mapped VMAs were not eligible for
merging with existing adjacent VMAs.
- The 4 patch series "mm/damon: introduce DAMON_STAT for simple and
practical access monitoring" from SeongJae Park adds a new kernel module
which simplifies the setup and usage of DAMON in production
environments.
- The 6 patch series "stop passing a writeback_control to swap/shmem
writeout" from Christoph Hellwig is a cleanup to the writeback code
which removes a couple of pointers from struct writeback_control.
- The 7 patch series "drivers/base/node.c: optimization and cleanups"
from Donet Tom contains largely uncorrelated cleanups to the NUMA node
setup and management code.
- The 4 patch series "mm: userfaultfd: assorted fixes and cleanups" from
Tal Zussman does some maintenance work on the userfaultfd code.
- The 5 patch series "Readahead tweaks for larger folios" from Ryan
Roberts implements some tuneups for pagecache readahead when it is
reading into order>0 folios.
- The 4 patch series "selftests/mm: Tweaks to the cow test" from Mark
Brown provides some cleanups and consistency improvements to the
selftests code.
- The 4 patch series "Optimize mremap() for large folios" from Dev Jain
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
- The 5 patch series "Remove zero_user()" from Matthew Wilcox expunges
zero_user() in favor of the more modern memzero_page().
- The 3 patch series "mm/huge_memory: vmf_insert_folio_*() and
vmf_insert_pfn_pud() fixes" from David Hildenbrand addresses some warts
which David noticed in the huge page code. These were not known to be
causing any issues at this time.
- The 3 patch series "mm/damon: use alloc_migrate_target() for
DAMOS_MIGRATE_{HOT,COLD" from SeongJae Park provides some cleanup and
consolidation work in DAMON.
- The 3 patch series "use vm_flags_t consistently" from Lorenzo Stoakes
uses vm_flags_t in places where we were inappropriately using other
types.
- The 3 patch series "mm/memfd: Reserve hugetlb folios before
allocation" from Vivek Kasireddy increases the reliability of large page
allocation in the memfd code.
- The 14 patch series "mm: Remove pXX_devmap page table bit and pfn_t
type" from Alistair Popple removes several now-unneeded PFN_* flags.
- The 5 patch series "mm/damon: decouple sysfs from core" from SeongJae
Park implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
- The 5 patch series "madvise cleanup" from Lorenzo Stoakes does quite a
lot of cleanup/maintenance work in the madvise() code.
- The 4 patch series "madvise anon_name cleanups" from Vlastimil Babka
provides additional cleanups on top or Lorenzo's effort.
- The 11 patch series "Implement numa node notifier" from Oscar Salvador
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory on/offline
notifier.
- The 6 patch series "Make MIGRATE_ISOLATE a standalone bit" from Zi Yan
cleans up the pageblock isolation code and fixes a potential issue which
doesn't seem to cause any problems in practice.
- The 5 patch series "selftests/damon: add python and drgn based DAMON
sysfs functionality tests" from SeongJae Park adds additional drgn- and
python-based DAMON selftests which are more comprehensive than the
existing selftest suite.
- The 5 patch series "Misc rework on hugetlb faulting path" from Oscar
Salvador fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
- The 3 patch series "cma: factor out allocation logic from
__cma_declare_contiguous_nid" from Mike Rapoport rationalizes and cleans
up the highmem-specific code in the CMA allocator.
- The 28 patch series "mm/migration: rework movable_ops page migration
(part 1)" from David Hildenbrand provides cleanups and
future-preparedness to the migration code.
- The 2 patch series "mm/damon: add trace events for auto-tuned
monitoring intervals and DAMOS quota" from SeongJae Park adds some
tracepoints to some DAMON auto-tuning code.
- The 6 patch series "mm/damon: fix misc bugs in DAMON modules" from
SeongJae Park does that.
- The 6 patch series "mm/damon: misc cleanups" from SeongJae Park also
does what it claims.
- The 4 patch series "mm: folio_pte_batch() improvements" from David
Hildenbrand cleans up the large folio PTE batching code.
- The 13 patch series "mm/damon/vaddr: Allow interleaving in
migrate_{hot,cold} actions" from SeongJae Park facilitates dynamic
alteration of DAMON's inter-node allocation policy.
- The 3 patch series "Remove unmap_and_put_page()" from Vishal Moola
provides a couple of page->folio conversions.
- The 4 patch series "mm: per-node proactive reclaim" from Davidlohr
Bueso implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
- The 14 patch series "mm/damon: remove damon_callback" from SeongJae
Park replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
- The 10 patch series "mm/mremap: permit mremap() move of multiple VMAs"
from Lorenzo Stoakes implements a number of mremap cleanups (of course)
in preparation for adding new mremap() functionality: newly permit the
remapping of multiple VMAs when the user is specifying MREMAP_FIXED. It
still excludes some specialized situations where this cannot be
performed reliably.
- The 3 patch series "drop hugetlb_free_pgd_range()" from Anthony Yznaga
switches some sparc hugetlb code over to the generic version and removes
the thus-unneeded hugetlb_free_pgd_range().
- The 4 patch series "mm/damon/sysfs: support periodic and automated
stats update" from SeongJae Park augments the present
userspace-requested update of DAMON sysfs monitoring files. Automatic
update is now provided, along with a tunable to control the update
interval.
- The 4 patch series "Some randome fixes and cleanups to swapfile" from
Kemeng Shi does what is claims.
- The 4 patch series "mm: introduce snapshot_page" from Luiz Capitulino
and David Hildenbrand provides (and uses) a means by which debug-style
functions can grab a copy of a pageframe and inspect it locklessly
without tripping over the races inherent in operating on the live
pageframe directly.
- The 6 patch series "use per-vma locks for /proc/pid/maps reads" from
Suren Baghdasaryan addresses the large contention issues which can be
triggered by reads from that procfs file. Latencies are reduced by more
than half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
- The 6 patch series "__folio_split() clean up" from Zi Yan cleans up
__folio_split()!
- The 7 patch series "Optimize mprotect() for large folios" from Dev
Jain provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
- The 2 patch series "selftests/mm: reuse FORCE_READ to replace "asm
volatile("" : "+r" (XXX));" and some cleanup" from wang lian does some
cleanup work in the selftests code.
- The 3 patch series "tools/testing: expand mremap testing" from Lorenzo
Stoakes extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
- The 22 patch series "selftests/damon/sysfs.py: test all parameters"
from SeongJae Park extends the DAMON sysfs interface selftest so that it
tests all possible user-requested parameters. Rather than the present
minimal subset.
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Merge tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"As usual, many cleanups. The below blurbiage describes 42 patchsets.
21 of those are partially or fully cleanup work. "cleans up",
"cleanup", "maintainability", "rationalizes", etc.
I never knew the MM code was so dirty.
"mm: ksm: prevent KSM from breaking merging of new VMAs" (Lorenzo Stoakes)
addresses an issue with KSM's PR_SET_MEMORY_MERGE mode: newly
mapped VMAs were not eligible for merging with existing adjacent
VMAs.
"mm/damon: introduce DAMON_STAT for simple and practical access monitoring" (SeongJae Park)
adds a new kernel module which simplifies the setup and usage of
DAMON in production environments.
"stop passing a writeback_control to swap/shmem writeout" (Christoph Hellwig)
is a cleanup to the writeback code which removes a couple of
pointers from struct writeback_control.
"drivers/base/node.c: optimization and cleanups" (Donet Tom)
contains largely uncorrelated cleanups to the NUMA node setup and
management code.
"mm: userfaultfd: assorted fixes and cleanups" (Tal Zussman)
does some maintenance work on the userfaultfd code.
"Readahead tweaks for larger folios" (Ryan Roberts)
implements some tuneups for pagecache readahead when it is reading
into order>0 folios.
"selftests/mm: Tweaks to the cow test" (Mark Brown)
provides some cleanups and consistency improvements to the
selftests code.
"Optimize mremap() for large folios" (Dev Jain)
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
"Remove zero_user()" (Matthew Wilcox)
expunges zero_user() in favor of the more modern memzero_page().
"mm/huge_memory: vmf_insert_folio_*() and vmf_insert_pfn_pud() fixes" (David Hildenbrand)
addresses some warts which David noticed in the huge page code.
These were not known to be causing any issues at this time.
"mm/damon: use alloc_migrate_target() for DAMOS_MIGRATE_{HOT,COLD" (SeongJae Park)
provides some cleanup and consolidation work in DAMON.
"use vm_flags_t consistently" (Lorenzo Stoakes)
uses vm_flags_t in places where we were inappropriately using other
types.
"mm/memfd: Reserve hugetlb folios before allocation" (Vivek Kasireddy)
increases the reliability of large page allocation in the memfd
code.
"mm: Remove pXX_devmap page table bit and pfn_t type" (Alistair Popple)
removes several now-unneeded PFN_* flags.
"mm/damon: decouple sysfs from core" (SeongJae Park)
implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
"madvise cleanup" (Lorenzo Stoakes)
does quite a lot of cleanup/maintenance work in the madvise() code.
"madvise anon_name cleanups" (Vlastimil Babka)
provides additional cleanups on top or Lorenzo's effort.
"Implement numa node notifier" (Oscar Salvador)
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory
on/offline notifier.
"Make MIGRATE_ISOLATE a standalone bit" (Zi Yan)
cleans up the pageblock isolation code and fixes a potential issue
which doesn't seem to cause any problems in practice.
"selftests/damon: add python and drgn based DAMON sysfs functionality tests" (SeongJae Park)
adds additional drgn- and python-based DAMON selftests which are
more comprehensive than the existing selftest suite.
"Misc rework on hugetlb faulting path" (Oscar Salvador)
fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
"cma: factor out allocation logic from __cma_declare_contiguous_nid" (Mike Rapoport)
rationalizes and cleans up the highmem-specific code in the CMA
allocator.
"mm/migration: rework movable_ops page migration (part 1)" (David Hildenbrand)
provides cleanups and future-preparedness to the migration code.
"mm/damon: add trace events for auto-tuned monitoring intervals and DAMOS quota" (SeongJae Park)
adds some tracepoints to some DAMON auto-tuning code.
"mm/damon: fix misc bugs in DAMON modules" (SeongJae Park)
does that.
"mm/damon: misc cleanups" (SeongJae Park)
also does what it claims.
"mm: folio_pte_batch() improvements" (David Hildenbrand)
cleans up the large folio PTE batching code.
"mm/damon/vaddr: Allow interleaving in migrate_{hot,cold} actions" (SeongJae Park)
facilitates dynamic alteration of DAMON's inter-node allocation
policy.
"Remove unmap_and_put_page()" (Vishal Moola)
provides a couple of page->folio conversions.
"mm: per-node proactive reclaim" (Davidlohr Bueso)
implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
"mm/damon: remove damon_callback" (SeongJae Park)
replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
"mm/mremap: permit mremap() move of multiple VMAs" (Lorenzo Stoakes)
implements a number of mremap cleanups (of course) in preparation
for adding new mremap() functionality: newly permit the remapping
of multiple VMAs when the user is specifying MREMAP_FIXED. It still
excludes some specialized situations where this cannot be performed
reliably.
"drop hugetlb_free_pgd_range()" (Anthony Yznaga)
switches some sparc hugetlb code over to the generic version and
removes the thus-unneeded hugetlb_free_pgd_range().
"mm/damon/sysfs: support periodic and automated stats update" (SeongJae Park)
augments the present userspace-requested update of DAMON sysfs
monitoring files. Automatic update is now provided, along with a
tunable to control the update interval.
"Some randome fixes and cleanups to swapfile" (Kemeng Shi)
does what is claims.
"mm: introduce snapshot_page" (Luiz Capitulino and David Hildenbrand)
provides (and uses) a means by which debug-style functions can grab
a copy of a pageframe and inspect it locklessly without tripping
over the races inherent in operating on the live pageframe
directly.
"use per-vma locks for /proc/pid/maps reads" (Suren Baghdasaryan)
addresses the large contention issues which can be triggered by
reads from that procfs file. Latencies are reduced by more than
half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
"__folio_split() clean up" (Zi Yan)
cleans up __folio_split()!
"Optimize mprotect() for large folios" (Dev Jain)
provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
"selftests/mm: reuse FORCE_READ to replace "asm volatile("" : "+r" (XXX));" and some cleanup" (wang lian)
does some cleanup work in the selftests code.
"tools/testing: expand mremap testing" (Lorenzo Stoakes)
extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
"selftests/damon/sysfs.py: test all parameters" (SeongJae Park)
extends the DAMON sysfs interface selftest so that it tests all
possible user-requested parameters. Rather than the present minimal
subset"
* tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (370 commits)
MAINTAINERS: add missing headers to mempory policy & migration section
MAINTAINERS: add missing file to cgroup section
MAINTAINERS: add MM MISC section, add missing files to MISC and CORE
MAINTAINERS: add missing zsmalloc file
MAINTAINERS: add missing files to page alloc section
MAINTAINERS: add missing shrinker files
MAINTAINERS: move memremap.[ch] to hotplug section
MAINTAINERS: add missing mm_slot.h file THP section
MAINTAINERS: add missing interval_tree.c to memory mapping section
MAINTAINERS: add missing percpu-internal.h file to per-cpu section
mm/page_alloc: remove trace_mm_alloc_contig_migrate_range_info()
selftests/damon: introduce _common.sh to host shared function
selftests/damon/sysfs.py: test runtime reduction of DAMON parameters
selftests/damon/sysfs.py: test non-default parameters runtime commit
selftests/damon/sysfs.py: generalize DAMON context commit assertion
selftests/damon/sysfs.py: generalize monitoring attributes commit assertion
selftests/damon/sysfs.py: generalize DAMOS schemes commit assertion
selftests/damon/sysfs.py: test DAMOS filters commitment
selftests/damon/sysfs.py: generalize DAMOS scheme commit assertion
selftests/damon/sysfs.py: test DAMOS destinations commitment
...
494 lines
13 KiB
Text
494 lines
13 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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config 64BIT
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bool "64-bit kernel" if "$(ARCH)" = "sparc"
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default "$(ARCH)" = "sparc64"
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help
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|
SPARC is a family of RISC microprocessors designed and marketed by
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Sun Microsystems, incorporated. They are very widely found in Sun
|
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workstations and clones.
|
|
|
|
Say yes to build a 64-bit kernel - formerly known as sparc64
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Say no to build a 32-bit kernel - formerly known as sparc
|
|
|
|
config SPARC
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|
bool
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|
default y
|
|
select ARCH_HAS_CPU_CACHE_ALIASING
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|
select ARCH_HAS_DMA_OPS
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|
select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
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select ARCH_MIGHT_HAVE_PC_SERIO
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select OF
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select OF_PROMTREE
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select HAVE_ASM_MODVERSIONS
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|
select HAVE_ARCH_KGDB if !SMP || SPARC64
|
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select HAVE_ARCH_TRACEHOOK
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|
select HAVE_ARCH_SECCOMP if SPARC64
|
|
select HAVE_EXIT_THREAD
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|
select HAVE_PCI
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|
select SYSCTL_EXCEPTION_TRACE
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|
select RTC_CLASS
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|
select RTC_DRV_M48T59
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|
select RTC_SYSTOHC
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select HAVE_ARCH_JUMP_LABEL if SPARC64
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|
select GENERIC_IRQ_SHOW
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|
select ARCH_WANT_IPC_PARSE_VERSION
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|
select GENERIC_PCI_IOMAP
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select HAS_IOPORT
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|
select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64
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|
select HAVE_CBPF_JIT if SPARC32
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|
select HAVE_EBPF_JIT if SPARC64
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|
select HAVE_DEBUG_BUGVERBOSE
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|
select GENERIC_SMP_IDLE_THREAD
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|
select MODULES_USE_ELF_RELA
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|
select PCI_SYSCALL if PCI
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|
select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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|
select ODD_RT_SIGACTION
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|
select OLD_SIGSUSPEND
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|
select CPU_NO_EFFICIENT_FFS
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|
select LOCKDEP_SMALL if LOCKDEP
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select NEED_DMA_MAP_STATE
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select NEED_SG_DMA_LENGTH
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select TRACE_IRQFLAGS_SUPPORT
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|
|
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config SPARC32
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def_bool !64BIT
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select ARCH_32BIT_OFF_T
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select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
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|
select ARCH_HAS_SYNC_DMA_FOR_CPU
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|
select CLZ_TAB
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|
select DMA_DIRECT_REMAP
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|
select GENERIC_ATOMIC64
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|
select GENERIC_LIB_CMPDI2
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|
select GENERIC_LIB_UCMPDI2
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|
select HAVE_UID16
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|
select HAVE_PAGE_SIZE_4KB
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select LOCK_MM_AND_FIND_VMA
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select OLD_SIGACTION
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select ZONE_DMA
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config SPARC64
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def_bool 64BIT
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select ALTERNATE_USER_ADDRESS_SPACE
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_KRETPROBES
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|
select HAVE_KPROBES
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select MMU_GATHER_RCU_TABLE_FREE if SMP
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select MMU_GATHER_MERGE_VMAS
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select MMU_GATHER_NO_FLUSH_CACHE
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE
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select HAVE_DYNAMIC_FTRACE
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select HAVE_PAGE_SIZE_8KB
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select HAVE_SYSCALL_TRACEPOINTS
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select HAVE_CONTEXT_TRACKING_USER
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select HAVE_TIF_NOHZ
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|
select HAVE_DEBUG_KMEMLEAK
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select IOMMU_HELPER
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select SPARSE_IRQ
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select RTC_DRV_CMOS
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|
select RTC_DRV_BQ4802
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|
select RTC_DRV_SUN4V
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select RTC_DRV_STARFIRE
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|
select HAVE_PERF_EVENTS
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|
select PERF_USE_VMALLOC
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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|
select HAVE_C_RECORDMCOUNT
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|
select HAVE_ARCH_AUDITSYSCALL
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select ARCH_SUPPORTS_ATOMIC_RMW
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|
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
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|
select ARCH_SUPPORTS_HUGETLBFS
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|
select HAVE_NMI
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|
select HAVE_REGS_AND_STACK_ACCESS_API
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|
select ARCH_USE_QUEUED_RWLOCKS
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|
select ARCH_USE_QUEUED_SPINLOCKS
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select GENERIC_TIME_VSYSCALL
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|
select ARCH_CLOCKSOURCE_DATA
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|
select ARCH_HAS_PTE_SPECIAL
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select PCI_DOMAINS if PCI
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|
select ARCH_HAS_GIGANTIC_PAGE
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|
select HAVE_SOFTIRQ_ON_OWN_STACK
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|
select HAVE_SETUP_PER_CPU_AREA
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select NEED_PER_CPU_EMBED_FIRST_CHUNK
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select NEED_PER_CPU_PAGE_FIRST_CHUNK
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|
|
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config ARCH_PROC_KCORE_TEXT
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def_bool y
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config CPU_BIG_ENDIAN
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def_bool y
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config STACKTRACE_SUPPORT
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bool
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default y if SPARC64
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config LOCKDEP_SUPPORT
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bool
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default y if SPARC64
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config ARCH_HIBERNATION_POSSIBLE
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def_bool y if SPARC64
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config AUDIT_ARCH
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bool
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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 HIGHMEM
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bool
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default y if SPARC32
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select KMAP_LOCAL
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config PGTABLE_LEVELS
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default 4 if 64BIT
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default 3
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config ARCH_SUPPORTS_UPROBES
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def_bool y if SPARC64
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menu "Processor type and features"
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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 uni- and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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uniprocessor machines. On a uniprocessor machine, the kernel
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will run faster if you say N here.
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People using multiprocessor machines who say Y here should also say
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Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
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Management" code will be disabled if you say Y here.
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See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
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available at <https://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"
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depends on SMP
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range 2 32 if SPARC32
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range 2 4096 if SPARC64
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default 32 if SPARC32
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default 4096 if SPARC64
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source "kernel/Kconfig.hz"
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config ARCH_MAY_HAVE_PC_FDC
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bool
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default y
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config EMULATED_CMPXCHG
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bool
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default y if SPARC32
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help
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Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
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|
is emulated, and therefore it is not completely atomic.
|
|
|
|
# Makefile helpers
|
|
config SPARC32_SMP
|
|
bool
|
|
default y
|
|
depends on SPARC32 && SMP
|
|
|
|
config SPARC64_SMP
|
|
bool
|
|
default y
|
|
depends on SPARC64 && SMP
|
|
|
|
config EARLYFB
|
|
bool "Support for early boot text console"
|
|
default y
|
|
depends on SPARC64
|
|
select FONT_SUN8x16
|
|
select FONT_SUPPORT
|
|
help
|
|
Say Y here to enable a faster early framebuffer boot console.
|
|
|
|
config HOTPLUG_CPU
|
|
bool "Support for hot-pluggable CPUs"
|
|
depends on SPARC64 && SMP
|
|
help
|
|
Say Y here to experiment with turning CPUs off and on. CPUs
|
|
can be controlled through /sys/devices/system/cpu/cpu#.
|
|
Say N if you want to disable CPU hotplug.
|
|
|
|
if SPARC64
|
|
source "drivers/cpufreq/Kconfig"
|
|
endif
|
|
|
|
config US3_MC
|
|
tristate "UltraSPARC-III Memory Controller driver"
|
|
depends on SPARC64
|
|
default y
|
|
help
|
|
This adds a driver for the UltraSPARC-III memory controller.
|
|
Loading this driver allows exact mnemonic strings to be
|
|
printed in the event of a memory error, so that the faulty DIMM
|
|
on the motherboard can be matched to the error.
|
|
|
|
If in doubt, say Y, as this information can be very useful.
|
|
|
|
# Global things across all Sun machines.
|
|
config GENERIC_LOCKBREAK
|
|
bool
|
|
default y
|
|
depends on SPARC64 && SMP && PREEMPTION
|
|
|
|
config NUMA
|
|
bool "NUMA support"
|
|
depends on SPARC64 && SMP
|
|
|
|
config NODES_SHIFT
|
|
int "Maximum NUMA Nodes (as a power of 2)"
|
|
range 4 5 if SPARC64
|
|
default "5"
|
|
depends on NUMA
|
|
help
|
|
Specify the maximum number of NUMA Nodes available on the target
|
|
system. Increases memory reserved to accommodate various tables.
|
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
|
def_bool y if SPARC64
|
|
select SPARSEMEM_VMEMMAP_ENABLE
|
|
|
|
config ARCH_SPARSEMEM_DEFAULT
|
|
def_bool y if SPARC64
|
|
|
|
config ARCH_FORCE_MAX_ORDER
|
|
int "Order of maximal physically contiguous allocations"
|
|
default "12"
|
|
help
|
|
The kernel page allocator limits the size of maximal physically
|
|
contiguous allocations. The limit is called MAX_PAGE_ORDER and it
|
|
defines the maximal power of two of number of pages that can be
|
|
allocated as a single contiguous block. This option allows
|
|
overriding the default setting when ability to allocate very
|
|
large blocks of physically contiguous memory is required.
|
|
|
|
Don't change if unsure.
|
|
|
|
if SPARC64 || COMPILE_TEST
|
|
source "kernel/power/Kconfig"
|
|
endif
|
|
|
|
config SCHED_SMT
|
|
bool "SMT (Hyperthreading) scheduler support"
|
|
depends on SPARC64 && SMP
|
|
default y
|
|
help
|
|
SMT scheduler support improves the CPU scheduler's decision making
|
|
when dealing with SPARC cpus at a cost of slightly increased overhead
|
|
in some places. If unsure say N here.
|
|
|
|
config SCHED_MC
|
|
bool "Multi-core scheduler support"
|
|
depends on SPARC64 && SMP
|
|
default y
|
|
help
|
|
Multi-core scheduler support improves the CPU scheduler's decision
|
|
making when dealing with multi-core CPU chips at a cost of slightly
|
|
increased overhead in some places. If unsure say N here.
|
|
|
|
config CMDLINE_BOOL
|
|
bool "Default bootloader kernel arguments"
|
|
depends on SPARC64
|
|
|
|
config CMDLINE
|
|
string "Initial kernel command string"
|
|
depends on CMDLINE_BOOL
|
|
default "console=ttyS0,9600 root=/dev/sda1"
|
|
help
|
|
Say Y here if you want to be able to pass default arguments to
|
|
the kernel. This will be overridden by the bootloader, if you
|
|
use one (such as SILO). This is most useful if you want to boot
|
|
a kernel from TFTP, and want default options to be available
|
|
with having them passed on the command line.
|
|
|
|
NOTE: This option WILL override the PROM bootargs setting!
|
|
|
|
config SUN_PM
|
|
bool
|
|
default y if SPARC32
|
|
help
|
|
Enable power management and CPU standby features on supported
|
|
SPARC platforms.
|
|
|
|
config SPARC_LED
|
|
tristate "Sun4m LED driver"
|
|
depends on SPARC32
|
|
help
|
|
This driver toggles the front-panel LED on sun4m systems
|
|
in a user-specifiable manner. Its state can be probed
|
|
by reading /proc/led and its blinking mode can be changed
|
|
via writes to /proc/led
|
|
|
|
config SERIAL_CONSOLE
|
|
bool
|
|
depends on SPARC32
|
|
default y
|
|
help
|
|
If you say Y here, it will be possible to use a serial port as the
|
|
system console (the system console is the device which receives all
|
|
kernel messages and warnings and which allows logins in single user
|
|
mode). This could be useful if some terminal or printer is connected
|
|
to that serial port.
|
|
|
|
Even if you say Y here, the currently visible virtual console
|
|
(/dev/tty0) will still be used as the system console by default, but
|
|
you can alter that using a kernel command line option such as
|
|
"console=ttyS1". (Try "man bootparam" or see the documentation of
|
|
your boot loader (silo) about how to pass options to the kernel at
|
|
boot time.)
|
|
|
|
If you don't have a graphics card installed and you say Y here, the
|
|
kernel will automatically use the first serial line, /dev/ttyS0, as
|
|
system console.
|
|
|
|
If unsure, say N.
|
|
|
|
config SPARC_LEON
|
|
bool "Sparc Leon processor family"
|
|
depends on SPARC32
|
|
select USB_EHCI_BIG_ENDIAN_MMIO
|
|
select USB_EHCI_BIG_ENDIAN_DESC
|
|
select USB_UHCI_BIG_ENDIAN_MMIO
|
|
select USB_UHCI_BIG_ENDIAN_DESC
|
|
help
|
|
If you say Y here if you are running on a SPARC-LEON processor.
|
|
The LEON processor is a synthesizable VHDL model of the
|
|
SPARC-v8 standard. LEON is part of the GRLIB collection of
|
|
IP cores that are distributed under GPL. GRLIB can be downloaded
|
|
from www.gaisler.com. You can download a sparc-linux cross-compilation
|
|
toolchain at www.gaisler.com.
|
|
|
|
if SPARC_LEON
|
|
menu "U-Boot options"
|
|
|
|
config UBOOT_LOAD_ADDR
|
|
hex "uImage Load Address"
|
|
default 0x40004000
|
|
help
|
|
U-Boot kernel load address, the address in physical address space
|
|
where u-boot will place the Linux kernel before booting it.
|
|
This address is normally the base address of main memory + 0x4000.
|
|
|
|
config UBOOT_FLASH_ADDR
|
|
hex "uImage.o Load Address"
|
|
default 0x00080000
|
|
help
|
|
Optional setting only affecting the uImage.o ELF-image used to
|
|
download the uImage file to the target using a ELF-loader other than
|
|
U-Boot. It may for example be used to download an uImage to FLASH with
|
|
the GRMON utility before even starting u-boot.
|
|
|
|
config UBOOT_ENTRY_ADDR
|
|
hex "uImage Entry Address"
|
|
default 0xf0004000
|
|
help
|
|
Do not change this unless you know what you're doing. This is
|
|
hardcoded by the SPARC32 and LEON port.
|
|
|
|
This is the virtual address u-boot jumps to when booting the Linux
|
|
Kernel.
|
|
|
|
endmenu
|
|
endif
|
|
|
|
endmenu
|
|
|
|
menu "Bus options (PCI etc.)"
|
|
config SBUS
|
|
bool
|
|
default y
|
|
|
|
config SBUSCHAR
|
|
bool
|
|
default y
|
|
|
|
config SUN_LDOMS
|
|
bool "Sun Logical Domains support"
|
|
depends on SPARC64
|
|
help
|
|
Say Y here is you want to support virtual devices via
|
|
Logical Domains.
|
|
|
|
config PCIC_PCI
|
|
bool
|
|
depends on PCI && SPARC32 && !SPARC_LEON
|
|
default y
|
|
|
|
config LEON_PCI
|
|
bool
|
|
depends on PCI && SPARC_LEON
|
|
default y
|
|
|
|
config SPARC_GRPCI1
|
|
bool "GRPCI Host Bridge Support"
|
|
depends on LEON_PCI
|
|
default y
|
|
help
|
|
Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
|
|
PCI host controller is typically found in GRLIB SPARC32/LEON
|
|
systems. The driver has one property (all_pci_errors) controlled
|
|
from the bootloader that makes the GRPCI to generate interrupts
|
|
on detected PCI Parity and System errors.
|
|
|
|
config SPARC_GRPCI2
|
|
bool "GRPCI2 Host Bridge Support"
|
|
depends on LEON_PCI
|
|
default y
|
|
help
|
|
Say Y here to include the GRPCI2 Host Bridge Driver.
|
|
|
|
config SUN_OPENPROMFS
|
|
tristate "Openprom tree appears in /proc/openprom"
|
|
help
|
|
If you say Y, the OpenPROM device tree will be available as a
|
|
virtual file system, which you can mount to /proc/openprom by "mount
|
|
-t openpromfs none /proc/openprom".
|
|
|
|
To compile the /proc/openprom support as a module, choose M here: the
|
|
module will be called openpromfs.
|
|
|
|
Only choose N if you know in advance that you will not need to modify
|
|
OpenPROM settings on the running system.
|
|
|
|
# Makefile helpers
|
|
config SPARC64_PCI
|
|
bool
|
|
default y
|
|
depends on SPARC64 && PCI
|
|
|
|
config SPARC64_PCI_MSI
|
|
bool
|
|
default y
|
|
depends on SPARC64_PCI && PCI_MSI
|
|
|
|
endmenu
|
|
|
|
config COMPAT
|
|
bool
|
|
depends on SPARC64
|
|
default y
|
|
select HAVE_UID16
|
|
select ARCH_WANT_OLD_COMPAT_IPC
|
|
select COMPAT_OLD_SIGACTION
|
|
|
|
source "drivers/sbus/char/Kconfig"
|