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grep -E "= alloc_pages|= alloc_page|= get_zeroed_page|= __get_free_pages|= __get_free_page|= get_dma_pages" * -nr编译后的工程中 使用 buddy 的 文件有 37个,分布在 10个一级目录中,编译的顶级目录一共有13个分别为archblockdriversfsincludeinitkernellibmmnet

37个使用buddy的文件

arch/arm/kernel/signal.carch/arm/mm/dma-mapping.carch/arm/mm/fault-armv.cblock/blk-map.cblock/blk-mq.cdrivers/base/devres.cdrivers/tty/serial/serial_core.cfs/buffer.cfs/exec.cfs/nfs/dir.cfs/pipe.cinclude/asm-generic/pgalloc.hinclude/linux/highmem.hinit/do_mounts.ckernel/dma/direct.ckernel/dma/ops_helpers.ckernel/fork.clib/iov_iter.clib/scatterlist.cmm/memory.cmm/migrate.cmm/page_alloc.cmm/percpu-km.cmm/shmem.cmm/slab_common.cmm/slub.cmm/swapfile.cmm/swap_state.cmm/vmalloc.cnet/core/filter.cnet/core/skbuff.cnet/core/sock.cnet/sunrpc/socklib.cnet/sunrpc/svc.cnet/sunrpc/svc_xprt.cnet/sunrpc/xdr.cnet/sunrpc/xprtsock.c

CONFIG_DEBUG_PAGEALLOC

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