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mm: Support compiling out madvise and fadvise
Many embedded systems will not need these syscalls, and omitting them saves space. Add a new EXPERT config option CONFIG_ADVISE_SYSCALLS (default y) to support compiling them out. bloat-o-meter: add/remove: 0/3 grow/shrink: 0/0 up/down: 0/-2250 (-2250) function old new delta sys_fadvise64 57 - -57 sys_fadvise64_64 691 - -691 sys_madvise 1502 - -1502 Signed-off-by: Josh Triplett <[email protected]>
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3 changed files with 18 additions and 2 deletions
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@ -3,7 +3,7 @@
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#
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mmu-y := nommu.o
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mmu-$(CONFIG_MMU) := fremap.o gup.o highmem.o madvise.o memory.o mincore.o \
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mmu-$(CONFIG_MMU) := fremap.o gup.o highmem.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 pagewalk.o pgtable-generic.o
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@ -11,7 +11,7 @@ ifdef CONFIG_CROSS_MEMORY_ATTACH
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mmu-$(CONFIG_MMU) += process_vm_access.o
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endif
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obj-y := filemap.o mempool.o oom_kill.o fadvise.o \
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obj-y := filemap.o mempool.o oom_kill.o \
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maccess.o page_alloc.o page-writeback.o \
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readahead.o swap.o truncate.o vmscan.o shmem.o \
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util.o mmzone.o vmstat.o backing-dev.o \
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@ -28,6 +28,9 @@ else
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obj-y += bootmem.o
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endif
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ifdef CONFIG_MMU
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obj-$(CONFIG_ADVISE_SYSCALLS) += fadvise.o madvise.o
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endif
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obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
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obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o
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