Hmmm. Looks like we need to dust off UKVA to me.
diffprofile:
3790 page_remove_rmap
3213 default_idle
1299 kmap_atomic
803 kmap_atomic_to_page
776 kmem_cache_free
676 __pte_chain_free
486 page_add_rmap
240 unmap_all_pages
225 kmem_cache_alloc
166 vm_enough_memory
132 do_generic_mapping_read
100 handle_mm_fault
82 buffered_rmqueue
79 __copy_from_user_ll
67 update_atime
66 kunmap_atomic
63 release_pages
58 filemap_nopage
55 file_move
51 generic_file_open
51 find_get_page
...
-52 dput
-61 do_schedule
-63 get_empty_filp
-74 do_page_fault
-96 vfs_read
-97 path_lookup
-121 fd_install
-159 pte_alloc_one
-260 .text.lock.file_table
-372 page_address
-
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