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CONFIG_DEBUG_PAGEALLOC is now supported by x86, powerpc, sparc64, and s390. This patch implements it for the rest of the architectures by filling the pages with poison byte patterns after free_pages() and verifying the poison patterns before alloc_pages(). This generic one cannot detect invalid page accesses immediately but invalid read access may cause invalid dereference by poisoned memory and invalid write access can be detected after a long delay. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
40 lines
1.4 KiB
Makefile
40 lines
1.4 KiB
Makefile
#
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# Makefile for the linux memory manager.
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#
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mmu-y := nommu.o
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mmu-$(CONFIG_MMU) := fremap.o highmem.o madvise.o memory.o mincore.o \
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mlock.o mmap.o mprotect.o mremap.o msync.o rmap.o \
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vmalloc.o
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obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \
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maccess.o page_alloc.o page-writeback.o pdflush.o \
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readahead.o swap.o truncate.o vmscan.o shmem.o \
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prio_tree.o util.o mmzone.o vmstat.o backing-dev.o \
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page_isolation.o mm_init.o $(mmu-y)
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obj-$(CONFIG_PROC_PAGE_MONITOR) += pagewalk.o
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obj-$(CONFIG_BOUNCE) += bounce.o
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obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o thrash.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-$(CONFIG_NUMA) += mempolicy.o
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obj-$(CONFIG_SPARSEMEM) += sparse.o
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obj-$(CONFIG_SPARSEMEM_VMEMMAP) += sparse-vmemmap.o
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obj-$(CONFIG_TMPFS_POSIX_ACL) += shmem_acl.o
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obj-$(CONFIG_SLOB) += slob.o
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obj-$(CONFIG_MMU_NOTIFIER) += mmu_notifier.o
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obj-$(CONFIG_PAGE_POISONING) += debug-pagealloc.o
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obj-$(CONFIG_SLAB) += slab.o
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obj-$(CONFIG_SLUB) += slub.o
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obj-$(CONFIG_FAILSLAB) += failslab.o
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obj-$(CONFIG_MEMORY_HOTPLUG) += memory_hotplug.o
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obj-$(CONFIG_FS_XIP) += filemap_xip.o
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obj-$(CONFIG_MIGRATION) += migrate.o
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ifdef CONFIG_HAVE_DYNAMIC_PER_CPU_AREA
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obj-$(CONFIG_SMP) += percpu.o
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else
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obj-$(CONFIG_SMP) += allocpercpu.o
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endif
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obj-$(CONFIG_QUICKLIST) += quicklist.o
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obj-$(CONFIG_CGROUP_MEM_RES_CTLR) += memcontrol.o page_cgroup.o
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