Currently if CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, only part of
pages are initialized and added into buddy allocator at early stage. Then
the system memory information printed by mem_init_print_info() is
incorrect. The snippets of boot log are pasted here:
-----------------------------------------------------------------------
[ 0.059606] mem auto-init: stack:all(zero), heap alloc:off, heap free:off
[ 0.059622] software IO TLB: area num 64.
[ 0.143887] Memory: 1767888K/133954872K available (20480K kernel code, 3284K rwdata, 8972K rodata, 4572K init, 4916K bss, 2529756K reserved, 0K cma-reserved)
[ 0.145111] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=64, Nodes=2
---------------------------------------------------------------------------
Here, move mem_init_print_info() to later place until page init is
finished. After the fix, the printed memory information is like this:
-------------------------------------------------------------------------
[ +0.001002] smpboot: Total of 64 processors activated (293724.92 BogoMIPS)
[ +0.050086] node 0 deferred pages initialised in 45ms
[ +0.007309] node 1 deferred pages initialised in 53ms
[ 4.035449] Memory: 131272772K/133954872K available (20480K kernel code, 3284K rwdata, 8972K rodata, 4572K init, 4916K bss, 2529700K reserved, 0K cma-reserved)
[ +0.015995] devtmpfs: initialized
[ +0.003943] x86/mm: Memory block size: 2048MB
-------------------------------------------------------------------------
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
---
include/linux/gfp.h | 1 +
init/main.c | 1 +
mm/mm_init.c | 3 +--
3 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index de292a007138..2d69fa59b489 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -335,6 +335,7 @@ void drain_local_pages(struct zone *zone);
void page_alloc_init_late(void);
void setup_pcp_cacheinfo(void);
+void mem_init_print_info(void);
/*
* gfp_allowed_mask is set to GFP_BOOT_MASK during early boot to restrict what
diff --git a/init/main.c b/init/main.c
index e24b0780fdff..88f238a478a1 100644
--- a/init/main.c
+++ b/init/main.c
@@ -1547,6 +1547,7 @@ static noinline void __init kernel_init_freeable(void)
workqueue_init_topology();
padata_init();
page_alloc_init_late();
+ mem_init_print_info();
do_basic_setup();
diff --git a/mm/mm_init.c b/mm/mm_init.c
index 077bfe393b5e..d08f7c7f75f1 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -2703,7 +2703,7 @@ static void __init report_meminit(void)
pr_info("mem auto-init: clearing system memory may take some time...\n");
}
-static void __init mem_init_print_info(void)
+void __init mem_init_print_info(void)
{
unsigned long physpages, codesize, datasize, rosize, bss_size;
unsigned long init_code_size, init_data_size;
@@ -2774,7 +2774,6 @@ 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
--
2.41.0
