linux-kernel - [PATCH v3 4/4] s390: Use generic version of arch_is_kernel_initmem

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Date:   Thu, 30 Sep 2021 13:23:46 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Andrew Morton <akpm@...ux-foundation.org>, arnd@...db.de
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-s390@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arch@...r.kernel.org,
        Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Heiko Carstens <hca@...ux.ibm.com>
Subject: [PATCH v3 4/4] s390: Use generic version of arch_is_kernel_initmem_freed()

Generic version of arch_is_kernel_initmem_freed() now does the same
as s390 version.

Remove the s390 version.

Cc: Gerald Schaefer <gerald.schaefer@...ux.ibm.com>
Cc: Kefeng Wang <wangkefeng.wang@...wei.com>
Acked-by: Heiko Carstens <hca@...ux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
v3: No change
v2: No change
---
 arch/s390/include/asm/sections.h | 12 ------------
 arch/s390/mm/init.c              |  3 ---
 2 files changed, 15 deletions(-)

diff --git a/arch/s390/include/asm/sections.h b/arch/s390/include/asm/sections.h
index 85881dd48022..3fecaa4e8b74 100644
--- a/arch/s390/include/asm/sections.h
+++ b/arch/s390/include/asm/sections.h
@@ -2,20 +2,8 @@
 #ifndef _S390_SECTIONS_H
 #define _S390_SECTIONS_H
 
-#define arch_is_kernel_initmem_freed arch_is_kernel_initmem_freed
-
 #include <asm-generic/sections.h>
 
-extern bool initmem_freed;
-
-static inline int arch_is_kernel_initmem_freed(unsigned long addr)
-{
-	if (!initmem_freed)
-		return 0;
-	return addr >= (unsigned long)__init_begin &&
-	       addr < (unsigned long)__init_end;
-}
-
 /*
  * .boot.data section contains variables "shared" between the decompressor and
  * the decompressed kernel. The decompressor will store values in them, and
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index a04faf49001a..8c6f258a6183 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -58,8 +58,6 @@ unsigned long empty_zero_page, zero_page_mask;
 EXPORT_SYMBOL(empty_zero_page);
 EXPORT_SYMBOL(zero_page_mask);
 
-bool initmem_freed;
-
 static void __init setup_zero_pages(void)
 {
 	unsigned int order;
@@ -214,7 +212,6 @@ void __init mem_init(void)
 
 void free_initmem(void)
 {
-	initmem_freed = true;
 	__set_memory((unsigned long)_sinittext,
 		     (unsigned long)(_einittext - _sinittext) >> PAGE_SHIFT,
 		     SET_MEMORY_RW | SET_MEMORY_NX);
-- 
2.31.1