initramfs: provide a generic free_initrd_mem implementation

For most architectures free_initrd_mem just expands to the same
free_reserved_area call.  Provide that as a generic implementation marked
__weak.

Link: http://lkml.kernel.org/r/20190213174621.29297-8-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>	[m68k]
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>	[arm64]
Cc: Steven Price <steven.price@arm.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index a42fc5c..97f4940 100644 (file)
--- a/arch/alpha/mm/init.c
+++ b/arch/alpha/mm/init.c
@@ -291,11 +291,3 @@ free_initmem(void)
 {
        free_initmem_default(-1);
 }
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void
-free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif

diff --git a/arch/arc/mm/init.c b/arch/arc/mm/init.c
index e1ab2d7..c357a3b 100644 (file)
--- a/arch/arc/mm/init.c
+++ b/arch/arc/mm/init.c
@@ -214,10 +214,3 @@ void __ref free_initmem(void)
 {
        free_initmem_default(-1);
 }
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif

diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c
index fe582c3..6fd43ec 100644 (file)
--- a/arch/c6x/mm/init.c
+++ b/arch/c6x/mm/init.c
@@ -69,13 +69,6 @@ void __init mem_init(void)
        mem_init_print_info(NULL);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 void __init free_initmem(void)
 {
        free_initmem_default(-1);

diff --git a/arch/h8300/mm/init.c b/arch/h8300/mm/init.c
index 0f04a5e..ea635c9 100644 (file)
--- a/arch/h8300/mm/init.c
+++ b/arch/h8300/mm/init.c
@@ -103,14 +103,6 @@ void __init mem_init(void)
        mem_init_print_info(NULL);
 }
 
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 void
 free_initmem(void)
 {

diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
index 8868a4c..778cacb 100644 (file)
--- a/arch/m68k/mm/init.c
+++ b/arch/m68k/mm/init.c
@@ -147,10 +147,3 @@ void __init mem_init(void)
        init_pointer_tables();
        mem_init_print_info(NULL);
 }
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif

diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 7e97d44..b675bc6 100644 (file)
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -186,13 +186,6 @@ void __init setup_memory(void)
        paging_init();
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 void free_initmem(void)
 {
        free_initmem_default(-1);

diff --git a/arch/nds32/mm/init.c b/arch/nds32/mm/init.c
index 1d03633..9a7065c 100644 (file)
--- a/arch/nds32/mm/init.c
+++ b/arch/nds32/mm/init.c
@@ -257,13 +257,6 @@ void free_initmem(void)
        free_initmem_default(-1);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 void __set_fixmap(enum fixed_addresses idx,
                               phys_addr_t phys, pgprot_t flags)
 {

diff --git a/arch/nios2/mm/init.c b/arch/nios2/mm/init.c
index 16cea57..60736a7 100644 (file)
--- a/arch/nios2/mm/init.c
+++ b/arch/nios2/mm/init.c
@@ -82,13 +82,6 @@ void __init mmu_init(void)
        flush_tlb_all();
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 void __ref free_initmem(void)
 {
        free_initmem_default(-1);

diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index caeb418..08df7f0 100644 (file)
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -224,13 +224,6 @@ void __init mem_init(void)
        return;
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 void free_initmem(void)
 {
        free_initmem_default(-1);

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 3b0f9ea..11ec1f1 100644 (file)
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -917,10 +917,3 @@ void flush_tlb_all(void)
        spin_unlock(&sid_lock);
 }
 #endif
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index cd525d7..2026689 100644 (file)
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -338,13 +338,6 @@ void free_initmem(void)
        free_initmem_default(POISON_FREE_INITMEM);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 /*
  * This is called when a page has been modified by the kernel.
  * It just marks the page as not i-cache clean.  We do the i-cache

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 7062132..3e68d98 100644 (file)
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -408,13 +408,6 @@ void free_initmem(void)
        free_initmem_default(-1);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 #ifdef CONFIG_MEMORY_HOTPLUG
 int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
                bool want_memblock)

diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 99aa11b..a9c9a94 100644 (file)
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -188,13 +188,6 @@ void free_initmem(void)
 {
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
 /* Allocate and free page tables. */
 
 pgd_t *pgd_alloc(struct mm_struct *mm)

diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
index c0573fe..6e352de 100644 (file)
--- a/arch/unicore32/mm/init.c
+++ b/arch/unicore32/mm/init.c
@@ -292,10 +292,3 @@ void free_initmem(void)
 {
        free_initmem_default(-1);
 }
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-       free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif

diff --git a/init/initramfs.c b/init/initramfs.c
index cb3d177..fcb759a 100644 (file)
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -527,6 +527,11 @@ extern unsigned long __initramfs_size;
 #include <linux/initrd.h>
 #include <linux/kexec.h>
 
+void __weak free_initrd_mem(unsigned long start, unsigned long end)
+{
+       free_reserved_area((void *)start, (void *)end, -1, "initrd");
+}
+
 #ifdef CONFIG_KEXEC_CORE
 static bool kexec_free_initrd(void)
 {