• Tejun Heo's avatar
    percpu: move vmalloc based chunk management into percpu-vm.c · 9f645532
    Tejun Heo authored
    Separate out and move chunk management (creation/desctruction and
    [de]population) code into percpu-vm.c which is included by percpu.c
    and compiled together.  The interface for chunk management is defined
    as follows.
     * pcpu_populate_chunk		- populate the specified range of a chunk
     * pcpu_depopulate_chunk	- depopulate the specified range of a chunk
     * pcpu_create_chunk		- create a new chunk
     * pcpu_destroy_chunk		- destroy a chunk, always preceded by full depop
     * pcpu_addr_to_page		- translate address to physical address
     * pcpu_verify_alloc_info	- check alloc_info is acceptable during init
    Other than wrapping vmalloc_to_page() inside pcpu_addr_to_page() and
    dummy pcpu_verify_alloc_info() implementation, this patch only moves
    code around.  This separation is to allow alternate chunk management
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Reviewed-by: default avatarDavid Howells <dhowells@redhat.com>
    Cc: Graff Yang <graff.yang@gmail.com>
    Cc: Sonic Zhang <sonic.adi@gmail.com>
percpu-vm.c 13 KB