From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, linux-csky@vger.kernel.org,
David Hildenbrand <david@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Guo Ren <guoren@kernel.org>, Mike Rapoport <rppt@kernel.org>,
Oscar Salvador <osalvador@suse.de>,
Michal Hocko <mhocko@kernel.org>,
Wei Yang <richard.weiyang@linux.alibaba.com>
Subject: [PATCH v1] csky: use free_initmem_default() in free_initmem()
Date: Tue, 26 Jan 2021 19:14:20 +0100 [thread overview]
Message-ID: <20210126181420.19223-1-david@redhat.com> (raw)
The existing code is essentially
free_initmem_default()->free_reserved_area() without poisoning.
Note that existing code missed to update the managed page count of the
zone.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
Not compile tested as documentation on how to get
https://gitlab.com/c-sky/buildroot
running, especially with a custom kernel, is a bit sparse.
---
arch/csky/mm/init.c | 17 +----------------
1 file changed, 1 insertion(+), 16 deletions(-)
diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index 81e4e5e78f38..894050a8ce09 100644
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -110,24 +110,9 @@ void __init mem_init(void)
mem_init_print_info(NULL);
}
-extern char __init_begin[], __init_end[];
-
void free_initmem(void)
{
- unsigned long addr;
-
- addr = (unsigned long) &__init_begin;
-
- while (addr < (unsigned long) &__init_end) {
- ClearPageReserved(virt_to_page(addr));
- init_page_count(virt_to_page(addr));
- free_page(addr);
- totalram_pages_inc();
- addr += PAGE_SIZE;
- }
-
- pr_info("Freeing unused kernel memory: %dk freed\n",
- ((unsigned int)&__init_end - (unsigned int)&__init_begin) >> 10);
+ free_initmem_default(-1);
}
void pgd_init(unsigned long *p)
--
2.29.2
next reply other threads:[~2021-01-26 18:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-26 18:14 David Hildenbrand [this message]
2021-01-26 18:26 ` [PATCH v1] csky: use free_initmem_default() in free_initmem() Mike Rapoport
2021-01-27 7:52 ` Guo Ren
2021-01-27 8:49 ` David Hildenbrand
2021-01-27 9:06 ` Guo Ren
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