Thread (48 messages) 48 messages, 5 authors, 2020-10-09
STALE2097d

[RFC PATCH 04/24] mm/hugetlb: Register bootmem info when CONFIG_HUGETLB_PAGE_FREE_VMEMMAP

From: Muchun Song <hidden>
Date: 2020-09-15 13:02:00
Also in: linux-fsdevel, linux-mm, lkml
Subsystem: the rest, x86 architecture (32-bit and 64-bit), x86 mm · Maintainers: Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, Andy Lutomirski, Peter Zijlstra

We use put_page_bootmem() to free the unused vmemmap pages associated with
each hugetlb page, so we need register bootmem info in advance, even if
!CONFIG_NUMA.

Signed-off-by: Muchun Song <redacted>
---
 arch/x86/mm/init_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 0a45f062826e..0435bee2e172 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1225,7 +1225,7 @@ static struct kcore_list kcore_vsyscall;
 
 static void __init register_page_bootmem_info(void)
 {
-#ifdef CONFIG_NUMA
+#if defined(CONFIG_NUMA) || defined(CONFIG_HUGETLB_PAGE_FREE_VMEMMAP)
 	int i;
 
 	for_each_online_node(i)
-- 
2.20.1
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