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mm/mm_init.c: print mem_init info after defer_init is done

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Current call flow looks like this:

start_kernel
  mm_core_init
    mem_init
    mem_init_print_info
  rest_init
    kernel_init
      kernel_init_freeable
        page_alloc_init_late
          deferred_init_memmap

If CONFIG_DEFERRED_STRUCT_PAGE_INIT, the time mem_init_print_info()
calls, pages are not totally initialized and freed to buddy.

This has one issue

  * nr_free_pages() just contains partial free pages in the system,
    which is not we expect.

Let's print the mem info after defer_init is done.

Also this would help changing totalram_pages accounting, since we plan
to move the accounting into __free_pages_core().

Link: https://lkml.kernel.org/r/20240611145223.16872-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Wei Yang 2024-06-11 14:52:23 +00:00 committed by Andrew Morton
parent afb90a36c6
commit 4f66da89d3
1 changed files with 3 additions and 1 deletions
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4
mm/mm_init.c
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@ -2321,6 +2321,7 @@ void set_zone_contiguous(struct zone *zone)
zone->contiguous = true;
}
static void __init mem_init_print_info(void);
void __init page_alloc_init_late(void)
{
struct zone *zone;
@ -2347,6 +2348,8 @@ void __init page_alloc_init_late(void)
files_maxfiles_init();
#endif
/* Accounting of total+free memory is stable at this point. */
mem_init_print_info();
buffer_init();
/* Discard memblock private memory */
@ -2707,7 +2710,6 @@ void __init mm_core_init(void)
kmsan_init_shadow();
stack_depot_early_init();
mem_init();
mem_init_print_info();
kmem_cache_init();
/*
* page_owner must be initialized after buddy is ready, and also after