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-rw-r--r--arch/Kconfig7
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/mm/init.c25
-rw-r--r--arch/arm64/Kconfig1
-rw-r--r--arch/arm64/mm/init.c17
-rw-r--r--arch/unicore32/Kconfig1
-rw-r--r--arch/unicore32/mm/init.c14
-rw-r--r--init/initramfs.c9
8 files changed, 28 insertions, 47 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 5e43fcbad4ca..f11f0698b148 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -245,6 +245,13 @@ config ARCH_HAS_FORTIFY_SOURCE
An architecture should select this when it can successfully
build and run with CONFIG_FORTIFY_SOURCE.
+#
+# Select if the arch provides a historic keepinit alias for the retain_initrd
+# command line option
+#
+config ARCH_HAS_KEEPINITRD
+ bool
+
# Select if arch has all set_memory_ro/rw/x/nx() functions in asm/cacheflush.h
config ARCH_HAS_SET_MEMORY
bool
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index dc9855c4a3b4..a11dfcc2a130 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -9,6 +9,7 @@ config ARM
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_FORTIFY_SOURCE
+ select ARCH_HAS_KEEPINITRD
select ARCH_HAS_KCOV
select ARCH_HAS_MEMBARRIER_SYNC_CORE
select ARCH_HAS_PTE_SPECIAL if ARM_LPAE
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index c2daabbe0af0..68dcd5f8d7c6 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -695,27 +695,14 @@ void free_initmem(void)
}
#ifdef CONFIG_BLK_DEV_INITRD
-
-static int keep_initrd;
-
void free_initrd_mem(unsigned long start, unsigned long end)
{
- if (!keep_initrd) {
- if (start == initrd_start)
- start = round_down(start, PAGE_SIZE);
- if (end == initrd_end)
- end = round_up(end, PAGE_SIZE);
+ if (start == initrd_start)
+ start = round_down(start, PAGE_SIZE);
+ if (end == initrd_end)
+ end = round_up(end, PAGE_SIZE);
- poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
- free_reserved_area((void *)start, (void *)end, -1, "initrd");
- }
+ poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
+ free_reserved_area((void *)start, (void *)end, -1, "initrd");
}
-
-static int __init keepinitrd_setup(char *__unused)
-{
- keep_initrd = 1;
- return 1;
-}
-
-__setup("keepinitrd", keepinitrd_setup);
#endif
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 3f957443f286..e24dc16453aa 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -21,6 +21,7 @@ config ARM64
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
select ARCH_HAS_KCOV
+ select ARCH_HAS_KEEPINITRD
select ARCH_HAS_MEMBARRIER_SYNC_CORE
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SETUP_DMA_OPS
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 40e2d7e5efcb..007c05a4cce0 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -578,24 +578,11 @@ void free_initmem(void)
}
#ifdef CONFIG_BLK_DEV_INITRD
-
-static int keep_initrd __initdata;
-
void __init free_initrd_mem(unsigned long start, unsigned long end)
{
- if (!keep_initrd) {
- free_reserved_area((void *)start, (void *)end, 0, "initrd");
- memblock_free(__virt_to_phys(start), end - start);
- }
-}
-
-static int __init keepinitrd_setup(char *__unused)
-{
- keep_initrd = 1;
- return 1;
+ free_reserved_area((void *)start, (void *)end, 0, "initrd");
+ memblock_free(__virt_to_phys(start), end - start);
}
-
-__setup("keepinitrd", keepinitrd_setup);
#endif
/*
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 2445dfcf6444..afe4949cfc2d 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -3,6 +3,7 @@ config UNICORE32
def_bool y
select ARCH_32BIT_OFF_T
select ARCH_HAS_DEVMEM_IS_ALLOWED
+ select ARCH_HAS_KEEPINITRD
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select HAVE_KERNEL_GZIP
diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c
index 74b6a2e29809..c0573feb5064 100644
--- a/arch/unicore32/mm/init.c
+++ b/arch/unicore32/mm/init.c
@@ -294,20 +294,8 @@ void free_initmem(void)
}
#ifdef CONFIG_BLK_DEV_INITRD
-
-static int keep_initrd;
-
void free_initrd_mem(unsigned long start, unsigned long end)
{
- if (!keep_initrd)
- free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-
-static int __init keepinitrd_setup(char *__unused)
-{
- keep_initrd = 1;
- return 1;
+ free_reserved_area((void *)start, (void *)end, -1, "initrd");
}
-
-__setup("keepinitrd", keepinitrd_setup);
#endif
diff --git a/init/initramfs.c b/init/initramfs.c
index 32f940473d67..cb3d17735c66 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -513,6 +513,15 @@ static int __init retain_initrd_param(char *str)
}
__setup("retain_initrd", retain_initrd_param);
+#ifdef CONFIG_ARCH_HAS_KEEPINITRD
+static int __init keepinitrd_setup(char *__unused)
+{
+ do_retain_initrd = 1;
+ return 1;
+}
+__setup("keepinitrd", keepinitrd_setup);
+#endif
+
extern char __initramfs_start[];
extern unsigned long __initramfs_size;
#include <linux/initrd.h>