diff mbox series

[07/15] init: fold build_all_zonelists() and page_alloc_init_cpuhp() to mm_init()

Message ID 20230319220008.2138576-8-rppt@kernel.org
State New
Headers
Series mm: move core MM initialization to mm/mm_init.c |

Commit Message

Mike Rapoport March 19, 2023, 10 p.m. UTC 
  From: "Mike Rapoport (IBM)" <rppt@kernel.org>

Both build_all_zonelists() and page_alloc_init_cpuhp() must be called
after SMP setup is complete but before the page allocator is set up.

Still, they both are a part of memory management initialization, so move
them to mm_init().

Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
---
 init/main.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Comments

David Hildenbrand March 20, 2023, 10:35 a.m. UTC | #1 
On 19.03.23 23:00, Mike Rapoport wrote:
> From: "Mike Rapoport (IBM)" <rppt@kernel.org>
> 
> Both build_all_zonelists() and page_alloc_init_cpuhp() must be called
> after SMP setup is complete but before the page allocator is set up.
> 
> Still, they both are a part of memory management initialization, so move
> them to mm_init().
> 
> Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>

Acked-by: David Hildenbrand <david@redhat.com>
diff mbox series

Patch

diff --git a/init/main.c b/init/main.c
index b2499bee7a3c..4423906177c1 100644
--- a/init/main.c
+++ b/init/main.c
@@ -833,6 +833,10 @@  static void __init report_meminit(void)
  */
 static void __init mm_init(void)
 {
+	/* Initializations relying on SMP setup */
+	build_all_zonelists(NULL);
+	page_alloc_init_cpuhp();
+
 	/*
 	 * page_ext requires contiguous pages,
 	 * bigger than MAX_ORDER unless SPARSEMEM.
@@ -968,9 +972,6 @@  asmlinkage __visible void __init __no_sanitize_address start_kernel(void)
 	smp_prepare_boot_cpu();	/* arch-specific boot-cpu hooks */
 	boot_cpu_hotplug_init();
 
-	build_all_zonelists(NULL);
-	page_alloc_init_cpuhp();
-
 	pr_notice("Kernel command line: %s\n", saved_command_line);
 	/* parameters may set static keys */
 	jump_label_init();