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().
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
CC: David Hildenbrand <david@xxxxxxxxxx>
---
v2:
* mention this would help changing totalram_pages accounting
* instead of moving the function ahead, add function declaration ahead
* add a comment before calling mem_init_print_info
---
mm/mm_init.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/mm/mm_init.c b/mm/mm_init.c
index f72b852bd5b8..769d5ba6bf38 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -2322,6 +2322,7 @@ 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;
@@ -2348,6 +2349,8 @@ 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 */
@@ -2737,7 +2740,6 @@ 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
--
2.34.1
