61307b7be4
documented (hopefully adequately) in the respective changelogs. Notable
series include:
- Lucas Stach has provided some page-mapping
cleanup/consolidation/maintainability work in the series "mm/treewide:
Remove pXd_huge() API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being allocated:
number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in largely
similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
Weiner has fixed the page allocator's handling of migratetype requests,
with resulting improvements in compaction efficiency.
- In the series "make the hugetlb migration strategy consistent" Baolin
Wang has fixed a hugetlb migration issue, which should improve hugetlb
allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when memory
almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting" Kairui
Song has optimized pagecache insertion, yielding ~10% performance
improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various page->flags
cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
"mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs. This
is a simple first-cut implementation for now. The series is "support
multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in the
series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts in
the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes
the initialization code so that migration between different memory types
works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant driver
in the series "mm: follow_pte() improvements and acrn follow_pte()
fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to folio
in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size THP's
in the series "mm: add per-order mTHP alloc and swpout counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His series
"mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback instrumentation
in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series "Fix
and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
series "Improve anon_vma scalability for anon VMAs". Intel's test bot
reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking".
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Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
"The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.
Notable series include:
- Lucas Stach has provided some page-mapping cleanup/consolidation/
maintainability work in the series "mm/treewide: Remove pXd_huge()
API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
one test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being
allocated: number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in
largely similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene"
Johannes Weiner has fixed the page allocator's handling of
migratetype requests, with resulting improvements in compaction
efficiency.
- In the series "make the hugetlb migration strategy consistent"
Baolin Wang has fixed a hugetlb migration issue, which should
improve hugetlb allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when
memory almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting"
Kairui Song has optimized pagecache insertion, yielding ~10%
performance improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various
page->flags cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series:
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert
hugetlb functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
series "mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs.
This is a simple first-cut implementation for now. The series is
"support multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in
the series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts
in the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call
it GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
path to use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes".
Fixes the initialization code so that migration between different
memory types works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant
driver in the series "mm: follow_pte() improvements and acrn
follow_pte() fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to
folio in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size
THP's in the series "mm: add per-order mTHP alloc and swpout
counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap
same-filled and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His
series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
optimizes the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback
instrumentation in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series
"Fix and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
the series "Improve anon_vma scalability for anon VMAs". Intel's
test bot reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as
XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking""
* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
selftests: cgroup: add tests to verify the zswap writeback path
mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
mm/damon/core: fix return value from damos_wmark_metric_value
mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
selftests: cgroup: remove redundant enabling of memory controller
Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
Docs/mm/damon/design: use a list for supported filters
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
selftests/damon: classify tests for functionalities and regressions
selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
selftests/damon: add a test for DAMOS quota goal
...
18 KiB
SPDX-License-Identifier: GPL-2.0
config SUPERH def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_CPU_CACHE_ALIASING select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A) select ARCH_HAS_BINFMT_FLAT if !MMU select ARCH_HAS_CPU_FINALIZE_INIT select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HIBERNATION_POSSIBLE if MMU select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_WANT_IPC_PARSE_VERSION select CPU_NO_EFFICIENT_FFS select DMA_DECLARE_COHERENT select GENERIC_ATOMIC64 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST select GENERIC_IDLE_POLL_SETUP select GENERIC_IRQ_SHOW select GENERIC_LIB_ASHLDI3 select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_PCI_IOMAP if PCI select GENERIC_SCHED_CLOCK select GENERIC_SMP_IDLE_THREAD select GUP_GET_PXX_LOW_HIGH if X2TLB select HAS_IOPORT if HAS_IOPORT_MAP select GENERIC_IOREMAP if MMU select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_KGDB select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_DEBUG_BUGVERBOSE select HAVE_DEBUG_KMEMLEAK select HAVE_DYNAMIC_FTRACE select HAVE_GUP_FAST if MMU select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER select HAVE_FTRACE_MCOUNT_RECORD select HAVE_HW_BREAKPOINT select HAVE_IOREMAP_PROT if MMU && !X2TLB select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZMA select HAVE_KERNEL_LZO select HAVE_KERNEL_XZ select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_MIXED_BREAKPOINTS_REGS select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER select HAVE_NMI select HAVE_PATA_PLATFORM select HAVE_PERF_EVENTS select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_UID16 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS select HAVE_STACKPROTECTOR select HAVE_SYSCALL_TRACEPOINTS select IRQ_FORCED_THREADING select LOCK_MM_AND_FIND_VMA select MODULES_USE_ELF_RELA select NEED_SG_DMA_LENGTH select NO_DMA if !MMU && !DMA_COHERENT select NO_GENERIC_PCI_IOPORT_MAP if PCI select OLD_SIGACTION select OLD_SIGSUSPEND select PCI_DOMAINS if PCI select PERF_EVENTS select PERF_USE_VMALLOC select RTC_LIB select SPARSE_IRQ select TRACE_IRQFLAGS_SUPPORT help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast gaming console. The SuperH port has a home page at http://www.linux-sh.org/.
config GENERIC_BUG def_bool y depends on BUG
config GENERIC_HWEIGHT def_bool y
config GENERIC_CALIBRATE_DELAY bool
config GENERIC_LOCKBREAK def_bool y depends on SMP && PREEMPTION
config ARCH_SUSPEND_POSSIBLE def_bool n
config ARCH_HIBERNATION_POSSIBLE def_bool n
config SYS_SUPPORTS_APM_EMULATION bool select ARCH_SUSPEND_POSSIBLE
config SYS_SUPPORTS_SMP bool
config SYS_SUPPORTS_NUMA bool
config STACKTRACE_SUPPORT def_bool y
config LOCKDEP_SUPPORT def_bool y
config ARCH_HAS_ILOG2_U32 def_bool n
config ARCH_HAS_ILOG2_U64 def_bool n
config NO_IOPORT_MAP
def_bool !PCI
depends on !SH_SHMIN && !SH_HP6XX && !SH_SOLUTION_ENGINE &&
!SH_DREAMCAST
config IO_TRAPPED bool
config SWAP_IO_SPACE bool
config DMA_COHERENT bool
config DMA_NONCOHERENT def_bool !NO_DMA && !DMA_COHERENT select ARCH_HAS_DMA_PREP_COHERENT select ARCH_HAS_SYNC_DMA_FOR_DEVICE select DMA_DIRECT_REMAP
config PGTABLE_LEVELS default 3 if X2TLB default 2
menu "System type"
Processor families
config CPU_SH2 bool select SH_INTC
config CPU_SH2A bool select CPU_SH2 select UNCACHED_MAPPING
config CPU_J2 bool select CPU_SH2 select OF select OF_EARLY_FLATTREE
config CPU_SH3 bool select CPU_HAS_INTEVT select CPU_HAS_SR_RB select SH_INTC select SYS_SUPPORTS_SH_TMU
config CPU_SH4 bool select ARCH_SUPPORTS_HUGETLBFS if MMU select CPU_HAS_INTEVT select CPU_HAS_SR_RB select CPU_HAS_FPU if !CPU_SH4AL_DSP select SH_INTC select SYS_SUPPORTS_SH_TMU
config CPU_SH4A bool select CPU_SH4
config CPU_SH4AL_DSP bool select CPU_SH4A select CPU_HAS_DSP
config CPU_SHX2 bool
config CPU_SHX3 bool select DMA_COHERENT select SYS_SUPPORTS_SMP select SYS_SUPPORTS_NUMA
config ARCH_SHMOBILE bool select ARCH_SUSPEND_POSSIBLE select PM
config CPU_HAS_PMU depends on CPU_SH4 || CPU_SH4A default y bool
choice prompt "Processor sub-type selection"
Processor subtypes
SH-2 Processor Support
config CPU_SUBTYPE_SH7619 bool "Support SH7619 processor" select CPU_SH2 select SYS_SUPPORTS_SH_CMT
config CPU_SUBTYPE_J2 bool "Support J2 processor" select CPU_J2 select SYS_SUPPORTS_SMP select GENERIC_CLOCKEVENTS_BROADCAST if SMP
SH-2A Processor Support
config CPU_SUBTYPE_SH7201 bool "Support SH7201 processor" select CPU_SH2A select CPU_HAS_FPU select SYS_SUPPORTS_SH_MTU2
config CPU_SUBTYPE_SH7203 bool "Support SH7203 processor" select CPU_SH2A select CPU_HAS_FPU select SYS_SUPPORTS_SH_CMT select SYS_SUPPORTS_SH_MTU2 select PINCTRL
config CPU_SUBTYPE_SH7206 bool "Support SH7206 processor" select CPU_SH2A select SYS_SUPPORTS_SH_CMT select SYS_SUPPORTS_SH_MTU2
config CPU_SUBTYPE_SH7263 bool "Support SH7263 processor" select CPU_SH2A select CPU_HAS_FPU select SYS_SUPPORTS_SH_CMT select SYS_SUPPORTS_SH_MTU2
config CPU_SUBTYPE_SH7264 bool "Support SH7264 processor" select CPU_SH2A select CPU_HAS_FPU select SYS_SUPPORTS_SH_CMT select SYS_SUPPORTS_SH_MTU2 select PINCTRL
config CPU_SUBTYPE_SH7269 bool "Support SH7269 processor" select CPU_SH2A select CPU_HAS_FPU select SYS_SUPPORTS_SH_CMT select SYS_SUPPORTS_SH_MTU2 select PINCTRL
config CPU_SUBTYPE_MXG bool "Support MX-G processor" select CPU_SH2A select SYS_SUPPORTS_SH_MTU2 help Select MX-G if running on an R8A03022BG part.
SH-3 Processor Support
config CPU_SUBTYPE_SH7705 bool "Support SH7705 processor" select CPU_SH3
config CPU_SUBTYPE_SH7706 bool "Support SH7706 processor" select CPU_SH3 help Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
config CPU_SUBTYPE_SH7707 bool "Support SH7707 processor" select CPU_SH3 help Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
config CPU_SUBTYPE_SH7708 bool "Support SH7708 processor" select CPU_SH3 help Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or if you have a 100 Mhz SH-3 HD6417708R CPU.
config CPU_SUBTYPE_SH7709 bool "Support SH7709 processor" select CPU_SH3 help Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
config CPU_SUBTYPE_SH7710 bool "Support SH7710 processor" select CPU_SH3 select CPU_HAS_DSP help Select SH7710 if you have a SH3-DSP SH7710 CPU.
config CPU_SUBTYPE_SH7712 bool "Support SH7712 processor" select CPU_SH3 select CPU_HAS_DSP help Select SH7712 if you have a SH3-DSP SH7712 CPU.
config CPU_SUBTYPE_SH7720 bool "Support SH7720 processor" select CPU_SH3 select CPU_HAS_DSP select SYS_SUPPORTS_SH_CMT select USB_OHCI_SH if USB_OHCI_HCD select PINCTRL help Select SH7720 if you have a SH3-DSP SH7720 CPU.
config CPU_SUBTYPE_SH7721 bool "Support SH7721 processor" select CPU_SH3 select CPU_HAS_DSP select SYS_SUPPORTS_SH_CMT select USB_OHCI_SH if USB_OHCI_HCD help Select SH7721 if you have a SH3-DSP SH7721 CPU.
SH-4 Processor Support
config CPU_SUBTYPE_SH7750 bool "Support SH7750 processor" select CPU_SH4 help Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
config CPU_SUBTYPE_SH7091 bool "Support SH7091 processor" select CPU_SH4 help Select SH7091 if you have an SH-4 based Sega device (such as the Dreamcast, Naomi, and Naomi 2).
config CPU_SUBTYPE_SH7750R bool "Support SH7750R processor" select CPU_SH4
config CPU_SUBTYPE_SH7750S bool "Support SH7750S processor" select CPU_SH4
config CPU_SUBTYPE_SH7751 bool "Support SH7751 processor" select CPU_SH4 help Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, or if you have a HD6417751R CPU.
config CPU_SUBTYPE_SH7751R bool "Support SH7751R processor" select CPU_SH4
config CPU_SUBTYPE_SH7760 bool "Support SH7760 processor" select CPU_SH4
SH-4A Processor Support
config CPU_SUBTYPE_SH7723 bool "Support SH7723 processor" select CPU_SH4A select CPU_SHX2 select ARCH_SHMOBILE select ARCH_SPARSEMEM_ENABLE select SYS_SUPPORTS_SH_CMT select PINCTRL help Select SH7723 if you have an SH-MobileR2 CPU.
config CPU_SUBTYPE_SH7724 bool "Support SH7724 processor" select CPU_SH4A select CPU_SHX2 select ARCH_SHMOBILE select ARCH_SPARSEMEM_ENABLE select SYS_SUPPORTS_SH_CMT select PINCTRL help Select SH7724 if you have an SH-MobileR2R CPU.
config CPU_SUBTYPE_SH7734 bool "Support SH7734 processor" select CPU_SH4A select CPU_SHX2 select PINCTRL help Select SH7734 if you have a SH4A SH7734 CPU.
config CPU_SUBTYPE_SH7757 bool "Support SH7757 processor" select CPU_SH4A select CPU_SHX2 select PINCTRL help Select SH7757 if you have a SH4A SH7757 CPU.
config CPU_SUBTYPE_SH7763 bool "Support SH7763 processor" select CPU_SH4A select USB_OHCI_SH if USB_OHCI_HCD help Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
config CPU_SUBTYPE_SH7770 bool "Support SH7770 processor" select CPU_SH4A
config CPU_SUBTYPE_SH7780 bool "Support SH7780 processor" select CPU_SH4A
config CPU_SUBTYPE_SH7785 bool "Support SH7785 processor" select CPU_SH4A select CPU_SHX2 select ARCH_SPARSEMEM_ENABLE select SYS_SUPPORTS_NUMA select PINCTRL
config CPU_SUBTYPE_SH7786 bool "Support SH7786 processor" select CPU_SH4A select CPU_SHX3 select CPU_HAS_PTEAEX select GENERIC_CLOCKEVENTS_BROADCAST if SMP select USB_OHCI_SH if USB_OHCI_HCD select USB_EHCI_SH if USB_EHCI_HCD select PINCTRL
config CPU_SUBTYPE_SHX3 bool "Support SH-X3 processor" select CPU_SH4A select CPU_SHX3 select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GPIOLIB select PINCTRL
SH4AL-DSP Processor Support
config CPU_SUBTYPE_SH7343 bool "Support SH7343 processor" select CPU_SH4AL_DSP select ARCH_SHMOBILE select SYS_SUPPORTS_SH_CMT
config CPU_SUBTYPE_SH7722 bool "Support SH7722 processor" select CPU_SH4AL_DSP select CPU_SHX2 select ARCH_SHMOBILE select ARCH_SPARSEMEM_ENABLE select SYS_SUPPORTS_NUMA select SYS_SUPPORTS_SH_CMT select PINCTRL
config CPU_SUBTYPE_SH7366 bool "Support SH7366 processor" select CPU_SH4AL_DSP select CPU_SHX2 select ARCH_SHMOBILE select ARCH_SPARSEMEM_ENABLE select SYS_SUPPORTS_NUMA select SYS_SUPPORTS_SH_CMT
endchoice
source "arch/sh/mm/Kconfig"
source "arch/sh/Kconfig.cpu"
source "arch/sh/boards/Kconfig"
menu "Timer and clock configuration"
config SH_PCLK_FREQ
int "Peripheral clock frequency (in Hz)"
depends on SH_CLK_CPG_LEGACY
default "31250000" if CPU_SUBTYPE_SH7619
default "33333333" if CPU_SUBTYPE_SH7770 ||
CPU_SUBTYPE_SH7760 ||
CPU_SUBTYPE_SH7705 ||
CPU_SUBTYPE_SH7203 ||
CPU_SUBTYPE_SH7206 ||
CPU_SUBTYPE_SH7263 ||
CPU_SUBTYPE_MXG
default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
default "50000000"
help
This option is used to specify the peripheral clock frequency.
This is necessary for determining the reference clock value on
platforms lacking an RTC.
config SH_CLK_CPG def_bool y
config SH_CLK_CPG_LEGACY
depends on SH_CLK_CPG
def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE &&
!CPU_SHX3 && !CPU_SUBTYPE_SH7757 &&
!CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 &&
!CPU_SUBTYPE_SH7269
endmenu
menu "CPU Frequency scaling" source "drivers/cpufreq/Kconfig" endmenu
source "arch/sh/drivers/Kconfig"
endmenu
menu "Kernel features"
source "kernel/Kconfig.hz"
config ARCH_SUPPORTS_KEXEC def_bool MMU
config ARCH_SUPPORTS_CRASH_DUMP def_bool BROKEN_ON_SMP
config ARCH_SUPPORTS_KEXEC_JUMP def_bool y
config PHYSICAL_START hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP) default MEMORY_START help This gives the physical address where the kernel is loaded and is ordinarily the same as MEMORY_START.
Different values are primarily used in the case of kexec on panic
where the fail safe kernel needs to run at a different address
than the panic-ed kernel.
config SMP bool "Symmetric multi-processing support" depends on SYS_SUPPORTS_SMP help This enables support for systems with more than one CPU. If you have a system with only one CPU, say N. If you have a system with more than one CPU, say Y.
If you say N here, the kernel will run on uni- and multiprocessor
machines, but will use only one CPU of a multiprocessor machine. If
you say Y here, the kernel will run on many, but not all,
uniprocessor machines. On a uniprocessor machine, the kernel
will run faster if you say N here.
People using multiprocessor machines who say Y here should also say
Y to "Enhanced Real Time Clock Support", below.
See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
available at <https://www.tldp.org/docs.html#howto>.
If you don't know what to do here, say N.
config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 depends on SMP default "4" if CPU_SUBTYPE_SHX3 default "2" help This allows you to specify the maximum number of CPUs which this kernel will support. The maximum supported value is 32 and the minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
approximately eight kilobytes to the kernel image.
config HOTPLUG_CPU bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" depends on SMP help Say Y here to experiment with turning CPUs off and on. CPUs can be controlled through /sys/devices/system/cpu.
config GUSA def_bool y depends on !SMP help This enables support for gUSA (general UserSpace Atomicity). This is the default implementation for both UP and non-ll/sc CPUs, and is used by the libc, amongst others.
For additional information, design information can be found
in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
This should only be disabled for special cases where alternate
atomicity implementations exist.
config GUSA_RB bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) help Enabling this option will allow the kernel to implement some atomic operations using a software implementation of load-locked/ store-conditional (LLSC). On machines which do not have hardware LLSC, this should be more efficient than the other alternative of disabling interrupts around the atomic sequence.
config HW_PERF_EVENTS bool "Enable hardware performance counter support for perf events" depends on PERF_EVENTS && CPU_HAS_PMU default y help Enable hardware performance counter support for perf events. If disabled, perf events will use software events only.
source "drivers/sh/Kconfig"
endmenu
menu "Boot options"
config USE_BUILTIN_DTB bool "Use builtin DTB" default n depends on SH_DEVICE_TREE help Link a device tree blob for particular hardware into the kernel, suppressing use of the DTB pointer provided by the bootloader. This option should only be used with legacy bootloaders that are not capable of providing a DTB to the kernel, or for experimental hardware without stable device tree bindings.
config BUILTIN_DTB_SOURCE string "Source file for builtin DTB" default "" depends on USE_BUILTIN_DTB help Base name (without suffix, relative to arch/sh/boot/dts) for the a DTS file that will be used to produce the DTB linked into the kernel.
config ZERO_PAGE_OFFSET
hex
default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D ||
SH_7751_SOLUTION_ENGINE
default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
default "0x00002000" if PAGE_SIZE_8KB
default "0x00001000"
help
This sets the default offset of zero page.
config BOOT_LINK_OFFSET hex default "0x00210000" if SH_SHMIN default "0x00810000" if SH_7780_SOLUTION_ENGINE default "0x009e0000" if SH_TITAN default "0x01800000" if SH_SDK7780 default "0x02000000" if SH_EDOSK7760 default "0x00800000" help This option allows you to set the link address offset of the zImage. This can be useful if you are on a board which has a small amount of memory.
config ENTRY_OFFSET hex default "0x00001000" if PAGE_SIZE_4KB default "0x00002000" if PAGE_SIZE_8KB default "0x00004000" if PAGE_SIZE_16KB default "0x00010000" if PAGE_SIZE_64KB default "0x00000000"
config ROMIMAGE_MMCIF bool "Include MMCIF loader in romImage (EXPERIMENTAL)" depends on CPU_SUBTYPE_SH7724 help Say Y here to include experimental MMCIF loading code in romImage. With this enabled it is possible to write the romImage kernel image to an MMC card and boot the kernel straight from the reset vector. At reset the processor Mask ROM will load the first part of the romImage which in turn loads the rest the kernel image to RAM using the MMCIF hardware block.
choice prompt "Kernel command line" default CMDLINE_OVERWRITE help Setting this option allows the kernel command line arguments to be set.
config CMDLINE_OVERWRITE bool "Overwrite bootloader kernel arguments" help Given string will overwrite any arguments passed in by a bootloader.
config CMDLINE_EXTEND bool "Extend bootloader kernel arguments" help Given string will be concatenated with arguments passed in by a bootloader.
config CMDLINE_FROM_BOOTLOADER bool "Use bootloader kernel arguments" help Uses the command-line options passed by the boot loader.
endchoice
config CMDLINE string "Kernel command line arguments string" depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND default "console=ttySC1,115200"
endmenu
menu "Bus options"
config MAPLE bool "Maple Bus support" depends on SH_DREAMCAST help The Maple Bus is SEGA's serial communication bus for peripherals on the Dreamcast. Without this bus support you won't be able to get your Dreamcast keyboard etc to work, so most users probably want to say 'Y' here, unless you are only using the Dreamcast with a serial line terminal or a remote network connection.
endmenu
menu "Power management options (EXPERIMENTAL)"
source "kernel/power/Kconfig"
source "drivers/cpuidle/Kconfig"
endmenu