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https://github.com/torvalds/linux
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2a19be61a6
Remove CONFIG_SLAB, CONFIG_DEBUG_SLAB, CONFIG_SLAB_DEPRECATED and everything in Kconfig files and mm/Makefile that depends on those. Since SLUB is the only remaining allocator, remove the allocator choice, make CONFIG_SLUB a "def_bool y" for now and remove all explicit dependencies on SLUB or SLAB as it's now always enabled. Make every option's verbose name and description refer to "the slab allocator" without refering to the specific implementation. Do not rename the CONFIG_ option names yet. Everything under #ifdef CONFIG_SLAB, and mm/slab.c is now dead code, all code under #ifdef CONFIG_SLUB is now always compiled. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Christoph Lameter <cl@linux.com> Acked-by: David Rientjes <rientjes@google.com> Tested-by: David Rientjes <rientjes@google.com> Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
137 lines
5 KiB
Makefile
137 lines
5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux memory manager.
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#
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KASAN_SANITIZE_slab_common.o := n
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KASAN_SANITIZE_slub.o := n
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KCSAN_SANITIZE_kmemleak.o := n
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# These produce frequent data race reports: most of them are due to races on
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# the same word but accesses to different bits of that word. Re-enable KCSAN
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# for these when we have more consensus on what to do about them.
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KCSAN_SANITIZE_slab_common.o := n
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KCSAN_SANITIZE_slub.o := n
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KCSAN_SANITIZE_page_alloc.o := n
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# But enable explicit instrumentation for memory barriers.
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KCSAN_INSTRUMENT_BARRIERS := y
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# These files are disabled because they produce non-interesting and/or
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# flaky coverage that is not a function of syscall inputs. E.g. slab is out of
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# free pages, or a task is migrated between nodes.
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KCOV_INSTRUMENT_slab_common.o := n
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KCOV_INSTRUMENT_slub.o := n
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KCOV_INSTRUMENT_page_alloc.o := n
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KCOV_INSTRUMENT_debug-pagealloc.o := n
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KCOV_INSTRUMENT_kmemleak.o := n
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KCOV_INSTRUMENT_memcontrol.o := n
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KCOV_INSTRUMENT_mmzone.o := n
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KCOV_INSTRUMENT_vmstat.o := n
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KCOV_INSTRUMENT_failslab.o := n
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CFLAGS_init-mm.o += $(call cc-disable-warning, override-init)
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CFLAGS_init-mm.o += $(call cc-disable-warning, initializer-overrides)
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mmu-y := nommu.o
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mmu-$(CONFIG_MMU) := highmem.o memory.o mincore.o \
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mlock.o mmap.o mmu_gather.o mprotect.o mremap.o \
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msync.o page_vma_mapped.o pagewalk.o \
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pgtable-generic.o rmap.o vmalloc.o
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ifdef CONFIG_CROSS_MEMORY_ATTACH
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mmu-$(CONFIG_MMU) += process_vm_access.o
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endif
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obj-y := filemap.o mempool.o oom_kill.o fadvise.o \
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maccess.o page-writeback.o folio-compat.o \
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readahead.o swap.o truncate.o vmscan.o shrinker.o \
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shmem.o util.o mmzone.o vmstat.o backing-dev.o \
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mm_init.o percpu.o slab_common.o \
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compaction.o show_mem.o shmem_quota.o\
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interval_tree.o list_lru.o workingset.o \
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debug.o gup.o mmap_lock.o $(mmu-y)
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# Give 'page_alloc' its own module-parameter namespace
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page-alloc-y := page_alloc.o
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page-alloc-$(CONFIG_SHUFFLE_PAGE_ALLOCATOR) += shuffle.o
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# Give 'memory_hotplug' its own module-parameter namespace
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memory-hotplug-$(CONFIG_MEMORY_HOTPLUG) += memory_hotplug.o
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obj-y += page-alloc.o
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obj-y += init-mm.o
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obj-y += memblock.o
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obj-y += $(memory-hotplug-y)
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obj-y += slub.o
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ifdef CONFIG_MMU
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obj-$(CONFIG_ADVISE_SYSCALLS) += madvise.o
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endif
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obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o swap_slots.o
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obj-$(CONFIG_ZSWAP) += zswap.o
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obj-$(CONFIG_HAS_DMA) += dmapool.o
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obj-$(CONFIG_HUGETLBFS) += hugetlb.o
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obj-$(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP) += hugetlb_vmemmap.o
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obj-$(CONFIG_NUMA) += mempolicy.o
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obj-$(CONFIG_SPARSEMEM) += sparse.o
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obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o
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obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o
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obj-$(CONFIG_KSM) += ksm.o
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obj-$(CONFIG_PAGE_POISONING) += page_poison.o
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obj-$(CONFIG_KASAN) += kasan/
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obj-$(CONFIG_KFENCE) += kfence/
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obj-$(CONFIG_KMSAN) += kmsan/
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obj-$(CONFIG_FAILSLAB) += failslab.o
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obj-$(CONFIG_FAIL_PAGE_ALLOC) += fail_page_alloc.o
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obj-$(CONFIG_MEMTEST) += memtest.o
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obj-$(CONFIG_MIGRATION) += migrate.o
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obj-$(CONFIG_NUMA) += memory-tiers.o
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obj-$(CONFIG_DEVICE_MIGRATION) += migrate_device.o
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obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += huge_memory.o khugepaged.o
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obj-$(CONFIG_PAGE_COUNTER) += page_counter.o
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obj-$(CONFIG_MEMCG) += memcontrol.o vmpressure.o
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ifdef CONFIG_SWAP
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obj-$(CONFIG_MEMCG) += swap_cgroup.o
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endif
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obj-$(CONFIG_CGROUP_HUGETLB) += hugetlb_cgroup.o
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obj-$(CONFIG_GUP_TEST) += gup_test.o
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obj-$(CONFIG_DMAPOOL_TEST) += dmapool_test.o
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obj-$(CONFIG_MEMORY_FAILURE) += memory-failure.o
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obj-$(CONFIG_HWPOISON_INJECT) += hwpoison-inject.o
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obj-$(CONFIG_DEBUG_KMEMLEAK) += kmemleak.o
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obj-$(CONFIG_DEBUG_RODATA_TEST) += rodata_test.o
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obj-$(CONFIG_DEBUG_VM_PGTABLE) += debug_vm_pgtable.o
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obj-$(CONFIG_PAGE_OWNER) += page_owner.o
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obj-$(CONFIG_MEMORY_ISOLATION) += page_isolation.o
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obj-$(CONFIG_ZPOOL) += zpool.o
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obj-$(CONFIG_ZBUD) += zbud.o
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obj-$(CONFIG_ZSMALLOC) += zsmalloc.o
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obj-$(CONFIG_Z3FOLD) += z3fold.o
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obj-$(CONFIG_GENERIC_EARLY_IOREMAP) += early_ioremap.o
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obj-$(CONFIG_CMA) += cma.o
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obj-$(CONFIG_MEMORY_BALLOON) += balloon_compaction.o
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obj-$(CONFIG_PAGE_EXTENSION) += page_ext.o
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obj-$(CONFIG_PAGE_TABLE_CHECK) += page_table_check.o
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obj-$(CONFIG_CMA_DEBUGFS) += cma_debug.o
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obj-$(CONFIG_SECRETMEM) += secretmem.o
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obj-$(CONFIG_CMA_SYSFS) += cma_sysfs.o
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obj-$(CONFIG_USERFAULTFD) += userfaultfd.o
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obj-$(CONFIG_IDLE_PAGE_TRACKING) += page_idle.o
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obj-$(CONFIG_DEBUG_PAGEALLOC) += debug_page_alloc.o
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obj-$(CONFIG_DEBUG_PAGE_REF) += debug_page_ref.o
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obj-$(CONFIG_DAMON) += damon/
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obj-$(CONFIG_HARDENED_USERCOPY) += usercopy.o
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obj-$(CONFIG_PERCPU_STATS) += percpu-stats.o
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obj-$(CONFIG_ZONE_DEVICE) += memremap.o
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obj-$(CONFIG_HMM_MIRROR) += hmm.o
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obj-$(CONFIG_MEMFD_CREATE) += memfd.o
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obj-$(CONFIG_MAPPING_DIRTY_HELPERS) += mapping_dirty_helpers.o
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obj-$(CONFIG_PTDUMP_CORE) += ptdump.o
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obj-$(CONFIG_PAGE_REPORTING) += page_reporting.o
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obj-$(CONFIG_IO_MAPPING) += io-mapping.o
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obj-$(CONFIG_HAVE_BOOTMEM_INFO_NODE) += bootmem_info.o
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obj-$(CONFIG_GENERIC_IOREMAP) += ioremap.o
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obj-$(CONFIG_SHRINKER_DEBUG) += shrinker_debug.o
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