s390/mm: Add memory allocation profiling hooks

Similar to common code changes [1] add alloc_hook() wrappers to page table
allocation functions to allow for memory allocation profiling.

If CONFIG_MEM_ALLOC_PROFILING is enabled call sites of page table
allocations are accounted, instead of e.g. only crst_table_alloc() and
page_table_alloc(). This allows for slightly better profiling data, and the
output of /proc/allocinfo is similar to other architectures.

Without alloc_hook() wrappers the output of /proc/allocinfo looks like
this:

    17096704     4174 mm/memory.c:1061 func:folio_prealloc
    17809408     4348 mm/memory.c:1063 func:folio_prealloc
           0        0 mm/memory.c:4422 func:alloc_swap_folio
           0        0 mm/memory.c:4286 func:__alloc_swap_folio
           0        0 mm/memory.c:4971 func:alloc_anon_folio
         ...
     1589248       97 arch/s390/mm/pgalloc.c:25 func:crst_table_alloc
           0        0 arch/s390/mm/pgalloc.c:124 func:page_table_alloc_pgste
     4280320     1045 arch/s390/mm/pgalloc.c:149 func:page_table_alloc

With alloc_hook() wrappers:

     1097728      268 mm/memory.c:5147 func:__do_fault
    20119552     4912 mm/memory.c:1061 func:folio_prealloc
    17534976     4281 mm/memory.c:1063 func:folio_prealloc
           0        0 mm/memory.c:4422 func:alloc_swap_folio
           0        0 mm/memory.c:4286 func:__alloc_swap_folio
      786432      192 mm/memory.c:452 func:__pte_alloc
      405504       99 mm/memory.c:464 func:__pte_alloc_kernel
     1880064      459 mm/memory.c:5525 func:do_fault_around
           0        0 mm/memory.c:6403 func:__p4d_alloc
           0        0 mm/memory.c:6426 func:__pud_alloc
     1064960       65 mm/memory.c:6450 func:__pmd_alloc
           0        0 mm/memory.c:4971 func:alloc_anon_folio
           0        0 mm/memory.c:5233 func:do_set_pmd

[1] commit 2c321f3f70bc ("mm: change inlined allocation helpers to account at the call site")

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

0 files changed, 0 insertions, 0 deletions