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c40845e319
The -Woverride-init warn about code that may be intentional or not,
but the inintentional ones tend to be real bugs, so there is a bit of
disagreement on whether this warning option should be enabled by default
and we have multiple settings in scripts/Makefile.extrawarn as well as
individual subsystems.
Older versions of clang only supported -Wno-initializer-overrides with
the same meaning as gcc's -Woverride-init, though all supported versions
now work with both. Because of this difference, an earlier cleanup of
mine accidentally turned the clang warning off for W=1 builds and only
left it on for W=2, while it's still enabled for gcc with W=1.
There is also one driver that only turns the warning off for newer
versions of gcc but not other compilers, and some but not all the
Makefiles still use a cc-disable-warning conditional that is no
longer needed with supported compilers here.
Address all of the above by removing the special cases for clang
and always turning the warning off unconditionally where it got
in the way, using the syntax that is supported by both compilers.
Fixes: 2cd3271b7a
("kbuild: avoid duplicate warning options")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
136 lines
4.9 KiB
Makefile
136 lines
4.9 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 += -Wno-override-init
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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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