* [RFC] arm: add __initbss section attribute
@ 2015-10-12 3:59 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 3:59 UTC (permalink / raw)
To: linux, arnd, ard.biesheuvel, will.deacon, nico, keescook,
yalin.wang2010, catalin.marinas, victor.kamensky, msalter,
vladimir.murzin, ggdavisiv, paul.gortmaker, mingo, rusty, mcgrof,
akpm, kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
This attribute can make init data to be into .initbss section,
this will make the data to be NO_BITS in vmlinux, can shrink the
Image file size, and speed up the boot up time.
Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
---
arch/arm/kernel/vmlinux.lds.S | 2 +-
arch/arm/mm/init.c | 1 +
include/asm-generic/sections.h | 1 +
include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
include/linux/init.h | 1 +
include/linux/mm.h | 4 +++-
6 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 8b60fde..ad6d740 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -330,7 +330,7 @@ SECTIONS
}
#endif
- BSS_SECTION(0, 0, 0)
+ BSS_SECTION(0, 0, 0, 0)
_end = .;
STABS_DEBUG
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 8a63b4c..50b881e 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -722,6 +722,7 @@ void free_initmem(void)
free_tcmmem();
poison_init_mem(__init_begin, __init_end - __init_begin);
+ poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
if (!machine_is_integrator() && !machine_is_cintegrator())
free_initmem_default(-1);
}
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index b58fd66..a63ebe9 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
extern char _data[], _sdata[], _edata[];
extern char __bss_start[], __bss_stop[];
extern char __init_begin[], __init_end[];
+extern char __initbss_start[], __initbss_end[];
extern char _sinittext[], _einittext[];
extern char _end[];
extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index c4bd0e2..b3db62d 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -574,6 +574,14 @@
*(COMMON) \
}
+#define INITBSS(initbss_align) \
+ . = ALIGN(initbss_align); \
+ .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
+ VMLINUX_SYMBOL(__initbss_start) = .; \
+ *(.bss.init.data) \
+ VMLINUX_SYMBOL(__initbss_end) = .; \
+ }
+
/*
* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to
@@ -831,10 +839,11 @@
INIT_RAM_FS \
}
-#define BSS_SECTION(sbss_align, bss_align, stop_align) \
+#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
. = ALIGN(sbss_align); \
VMLINUX_SYMBOL(__bss_start) = .; \
SBSS(sbss_align) \
BSS(bss_align) \
+ INITBSS(initbss_align) \
. = ALIGN(stop_align); \
VMLINUX_SYMBOL(__bss_stop) = .;
diff --git a/include/linux/init.h b/include/linux/init.h
index b449f37..f2960b2 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -41,6 +41,7 @@
discard it in modules) */
#define __init __section(.init.text) __cold notrace
#define __initdata __section(.init.data)
+#define __initbss __section(.bss.init.data)
#define __initconst __constsection(.init.rodata)
#define __exitdata __section(.exit.data)
#define __exit_call __used __section(.exitcall.exit)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index d30eea3..1f266f7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -21,6 +21,7 @@
#include <linux/resource.h>
#include <linux/page_ext.h>
#include <linux/err.h>
+#include <asm/sections.h>
struct mempolicy;
struct anon_vma;
@@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
*/
static inline unsigned long free_initmem_default(int poison)
{
- extern char __init_begin[], __init_end[];
return free_reserved_area(&__init_begin, &__init_end,
poison, "unused kernel");
+ return free_reserved_area(&__initbss_start, &__initbss_end,
+ poison, "unused kernel");
}
static inline unsigned long get_num_physpages(void)
--
1.9.1
^ permalink raw reply related [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-12 3:59 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 3:59 UTC (permalink / raw)
To: linux, arnd, ard.biesheuvel, will.deacon, nico, keescook,
yalin.wang2010, catalin.marinas, victor.kamensky, msalter,
vladimir.murzin, ggdavisiv, paul.gortmaker, mingo, rusty, mcgrof,
akpm, kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
This attribute can make init data to be into .initbss section,
this will make the data to be NO_BITS in vmlinux, can shrink the
Image file size, and speed up the boot up time.
Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
---
arch/arm/kernel/vmlinux.lds.S | 2 +-
arch/arm/mm/init.c | 1 +
include/asm-generic/sections.h | 1 +
include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
include/linux/init.h | 1 +
include/linux/mm.h | 4 +++-
6 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 8b60fde..ad6d740 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -330,7 +330,7 @@ SECTIONS
}
#endif
- BSS_SECTION(0, 0, 0)
+ BSS_SECTION(0, 0, 0, 0)
_end = .;
STABS_DEBUG
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 8a63b4c..50b881e 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -722,6 +722,7 @@ void free_initmem(void)
free_tcmmem();
poison_init_mem(__init_begin, __init_end - __init_begin);
+ poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
if (!machine_is_integrator() && !machine_is_cintegrator())
free_initmem_default(-1);
}
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index b58fd66..a63ebe9 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
extern char _data[], _sdata[], _edata[];
extern char __bss_start[], __bss_stop[];
extern char __init_begin[], __init_end[];
+extern char __initbss_start[], __initbss_end[];
extern char _sinittext[], _einittext[];
extern char _end[];
extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index c4bd0e2..b3db62d 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -574,6 +574,14 @@
*(COMMON) \
}
+#define INITBSS(initbss_align) \
+ . = ALIGN(initbss_align); \
+ .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
+ VMLINUX_SYMBOL(__initbss_start) = .; \
+ *(.bss.init.data) \
+ VMLINUX_SYMBOL(__initbss_end) = .; \
+ }
+
/*
* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to
@@ -831,10 +839,11 @@
INIT_RAM_FS \
}
-#define BSS_SECTION(sbss_align, bss_align, stop_align) \
+#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
. = ALIGN(sbss_align); \
VMLINUX_SYMBOL(__bss_start) = .; \
SBSS(sbss_align) \
BSS(bss_align) \
+ INITBSS(initbss_align) \
. = ALIGN(stop_align); \
VMLINUX_SYMBOL(__bss_stop) = .;
diff --git a/include/linux/init.h b/include/linux/init.h
index b449f37..f2960b2 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -41,6 +41,7 @@
discard it in modules) */
#define __init __section(.init.text) __cold notrace
#define __initdata __section(.init.data)
+#define __initbss __section(.bss.init.data)
#define __initconst __constsection(.init.rodata)
#define __exitdata __section(.exit.data)
#define __exit_call __used __section(.exitcall.exit)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index d30eea3..1f266f7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -21,6 +21,7 @@
#include <linux/resource.h>
#include <linux/page_ext.h>
#include <linux/err.h>
+#include <asm/sections.h>
struct mempolicy;
struct anon_vma;
@@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
*/
static inline unsigned long free_initmem_default(int poison)
{
- extern char __init_begin[], __init_end[];
return free_reserved_area(&__init_begin, &__init_end,
poison, "unused kernel");
+ return free_reserved_area(&__initbss_start, &__initbss_end,
+ poison, "unused kernel");
}
static inline unsigned long get_num_physpages(void)
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-12 3:59 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 3:59 UTC (permalink / raw)
To: linux-arm-kernel
This attribute can make init data to be into .initbss section,
this will make the data to be NO_BITS in vmlinux, can shrink the
Image file size, and speed up the boot up time.
Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
---
arch/arm/kernel/vmlinux.lds.S | 2 +-
arch/arm/mm/init.c | 1 +
include/asm-generic/sections.h | 1 +
include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
include/linux/init.h | 1 +
include/linux/mm.h | 4 +++-
6 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 8b60fde..ad6d740 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -330,7 +330,7 @@ SECTIONS
}
#endif
- BSS_SECTION(0, 0, 0)
+ BSS_SECTION(0, 0, 0, 0)
_end = .;
STABS_DEBUG
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 8a63b4c..50b881e 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -722,6 +722,7 @@ void free_initmem(void)
free_tcmmem();
poison_init_mem(__init_begin, __init_end - __init_begin);
+ poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
if (!machine_is_integrator() && !machine_is_cintegrator())
free_initmem_default(-1);
}
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index b58fd66..a63ebe9 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
extern char _data[], _sdata[], _edata[];
extern char __bss_start[], __bss_stop[];
extern char __init_begin[], __init_end[];
+extern char __initbss_start[], __initbss_end[];
extern char _sinittext[], _einittext[];
extern char _end[];
extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index c4bd0e2..b3db62d 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -574,6 +574,14 @@
*(COMMON) \
}
+#define INITBSS(initbss_align) \
+ . = ALIGN(initbss_align); \
+ .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
+ VMLINUX_SYMBOL(__initbss_start) = .; \
+ *(.bss.init.data) \
+ VMLINUX_SYMBOL(__initbss_end) = .; \
+ }
+
/*
* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to
@@ -831,10 +839,11 @@
INIT_RAM_FS \
}
-#define BSS_SECTION(sbss_align, bss_align, stop_align) \
+#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
. = ALIGN(sbss_align); \
VMLINUX_SYMBOL(__bss_start) = .; \
SBSS(sbss_align) \
BSS(bss_align) \
+ INITBSS(initbss_align) \
. = ALIGN(stop_align); \
VMLINUX_SYMBOL(__bss_stop) = .;
diff --git a/include/linux/init.h b/include/linux/init.h
index b449f37..f2960b2 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -41,6 +41,7 @@
discard it in modules) */
#define __init __section(.init.text) __cold notrace
#define __initdata __section(.init.data)
+#define __initbss __section(.bss.init.data)
#define __initconst __constsection(.init.rodata)
#define __exitdata __section(.exit.data)
#define __exit_call __used __section(.exitcall.exit)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index d30eea3..1f266f7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -21,6 +21,7 @@
#include <linux/resource.h>
#include <linux/page_ext.h>
#include <linux/err.h>
+#include <asm/sections.h>
struct mempolicy;
struct anon_vma;
@@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
*/
static inline unsigned long free_initmem_default(int poison)
{
- extern char __init_begin[], __init_end[];
return free_reserved_area(&__init_begin, &__init_end,
poison, "unused kernel");
+ return free_reserved_area(&__initbss_start, &__initbss_end,
+ poison, "unused kernel");
}
static inline unsigned long get_num_physpages(void)
--
1.9.1
^ permalink raw reply related [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-12 3:59 ` yalin wang
` (2 preceding siblings ...)
(?)
@ 2015-10-12 8:22 ` Ard Biesheuvel
-1 siblings, 0 replies; 31+ messages in thread
From: Ard Biesheuvel @ 2015-10-12 8:22 UTC (permalink / raw)
To: yalin wang
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, mcgrof, Andrew Morton,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
> ---
> arch/arm/kernel/vmlinux.lds.S | 2 +-
> arch/arm/mm/init.c | 1 +
> include/asm-generic/sections.h | 1 +
> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
> include/linux/init.h | 1 +
> include/linux/mm.h | 4 +++-
> 6 files changed, 17 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
> index 8b60fde..ad6d740 100644
> --- a/arch/arm/kernel/vmlinux.lds.S
> +++ b/arch/arm/kernel/vmlinux.lds.S
> @@ -330,7 +330,7 @@ SECTIONS
> }
> #endif
>
> - BSS_SECTION(0, 0, 0)
> + BSS_SECTION(0, 0, 0, 0)
> _end = .;
>
> STABS_DEBUG
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 8a63b4c..50b881e 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -722,6 +722,7 @@ void free_initmem(void)
> free_tcmmem();
>
> poison_init_mem(__init_begin, __init_end - __init_begin);
> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
> if (!machine_is_integrator() && !machine_is_cintegrator())
> free_initmem_default(-1);
> }
> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
> index b58fd66..a63ebe9 100644
> --- a/include/asm-generic/sections.h
> +++ b/include/asm-generic/sections.h
> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
> extern char _data[], _sdata[], _edata[];
> extern char __bss_start[], __bss_stop[];
> extern char __init_begin[], __init_end[];
> +extern char __initbss_start[], __initbss_end[];
> extern char _sinittext[], _einittext[];
> extern char _end[];
> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index c4bd0e2..b3db62d 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -574,6 +574,14 @@
> *(COMMON) \
> }
>
> +#define INITBSS(initbss_align) \
> + . = ALIGN(initbss_align); \
> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
> + VMLINUX_SYMBOL(__initbss_start) = .; \
> + *(.bss.init.data) \
> + VMLINUX_SYMBOL(__initbss_end) = .; \
> + }
> +
> /*
> * DWARF debug sections.
> * Symbols in the DWARF debugging sections are relative to
> @@ -831,10 +839,11 @@
> INIT_RAM_FS \
> }
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> . = ALIGN(sbss_align); \
> VMLINUX_SYMBOL(__bss_start) = .; \
> SBSS(sbss_align) \
> BSS(bss_align) \
> + INITBSS(initbss_align) \
> . = ALIGN(stop_align); \
> VMLINUX_SYMBOL(__bss_stop) = .;
> diff --git a/include/linux/init.h b/include/linux/init.h
> index b449f37..f2960b2 100644
> --- a/include/linux/init.h
> +++ b/include/linux/init.h
> @@ -41,6 +41,7 @@
> discard it in modules) */
> #define __init __section(.init.text) __cold notrace
> #define __initdata __section(.init.data)
> +#define __initbss __section(.bss.init.data)
Shouldn't this be .init.bss ?
> #define __initconst __constsection(.init.rodata)
> #define __exitdata __section(.exit.data)
> #define __exit_call __used __section(.exitcall.exit)
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index d30eea3..1f266f7 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -21,6 +21,7 @@
> #include <linux/resource.h>
> #include <linux/page_ext.h>
> #include <linux/err.h>
> +#include <asm/sections.h>
>
> struct mempolicy;
> struct anon_vma;
> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
> */
> static inline unsigned long free_initmem_default(int poison)
> {
> - extern char __init_begin[], __init_end[];
>
> return free_reserved_area(&__init_begin, &__init_end,
> poison, "unused kernel");
> + return free_reserved_area(&__initbss_start, &__initbss_end,
> + poison, "unused kernel");
You obviously have not tested this code, since the first return makes
the second unreachable.
So you will need to put __initbss annotations all over the tree to
actually populate and then free this section (after you have fixed
your code). Before we do that, could we have an estimate of how much
memory it actually frees up, especially since the zImage compression
should ensure that zero initialized PROGBITS .data does not take very
much additional space in the first place.
--
Ard.
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:22 ` Ard Biesheuvel
0 siblings, 0 replies; 31+ messages in thread
From: Ard Biesheuvel @ 2015-10-12 8:22 UTC (permalink / raw)
To: yalin wang
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, mcgrof, Andrew Morton,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch
On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
> ---
> arch/arm/kernel/vmlinux.lds.S | 2 +-
> arch/arm/mm/init.c | 1 +
> include/asm-generic/sections.h | 1 +
> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
> include/linux/init.h | 1 +
> include/linux/mm.h | 4 +++-
> 6 files changed, 17 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
> index 8b60fde..ad6d740 100644
> --- a/arch/arm/kernel/vmlinux.lds.S
> +++ b/arch/arm/kernel/vmlinux.lds.S
> @@ -330,7 +330,7 @@ SECTIONS
> }
> #endif
>
> - BSS_SECTION(0, 0, 0)
> + BSS_SECTION(0, 0, 0, 0)
> _end = .;
>
> STABS_DEBUG
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 8a63b4c..50b881e 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -722,6 +722,7 @@ void free_initmem(void)
> free_tcmmem();
>
> poison_init_mem(__init_begin, __init_end - __init_begin);
> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
> if (!machine_is_integrator() && !machine_is_cintegrator())
> free_initmem_default(-1);
> }
> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
> index b58fd66..a63ebe9 100644
> --- a/include/asm-generic/sections.h
> +++ b/include/asm-generic/sections.h
> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
> extern char _data[], _sdata[], _edata[];
> extern char __bss_start[], __bss_stop[];
> extern char __init_begin[], __init_end[];
> +extern char __initbss_start[], __initbss_end[];
> extern char _sinittext[], _einittext[];
> extern char _end[];
> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index c4bd0e2..b3db62d 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -574,6 +574,14 @@
> *(COMMON) \
> }
>
> +#define INITBSS(initbss_align) \
> + . = ALIGN(initbss_align); \
> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
> + VMLINUX_SYMBOL(__initbss_start) = .; \
> + *(.bss.init.data) \
> + VMLINUX_SYMBOL(__initbss_end) = .; \
> + }
> +
> /*
> * DWARF debug sections.
> * Symbols in the DWARF debugging sections are relative to
> @@ -831,10 +839,11 @@
> INIT_RAM_FS \
> }
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> . = ALIGN(sbss_align); \
> VMLINUX_SYMBOL(__bss_start) = .; \
> SBSS(sbss_align) \
> BSS(bss_align) \
> + INITBSS(initbss_align) \
> . = ALIGN(stop_align); \
> VMLINUX_SYMBOL(__bss_stop) = .;
> diff --git a/include/linux/init.h b/include/linux/init.h
> index b449f37..f2960b2 100644
> --- a/include/linux/init.h
> +++ b/include/linux/init.h
> @@ -41,6 +41,7 @@
> discard it in modules) */
> #define __init __section(.init.text) __cold notrace
> #define __initdata __section(.init.data)
> +#define __initbss __section(.bss.init.data)
Shouldn't this be .init.bss ?
> #define __initconst __constsection(.init.rodata)
> #define __exitdata __section(.exit.data)
> #define __exit_call __used __section(.exitcall.exit)
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index d30eea3..1f266f7 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -21,6 +21,7 @@
> #include <linux/resource.h>
> #include <linux/page_ext.h>
> #include <linux/err.h>
> +#include <asm/sections.h>
>
> struct mempolicy;
> struct anon_vma;
> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
> */
> static inline unsigned long free_initmem_default(int poison)
> {
> - extern char __init_begin[], __init_end[];
>
> return free_reserved_area(&__init_begin, &__init_end,
> poison, "unused kernel");
> + return free_reserved_area(&__initbss_start, &__initbss_end,
> + poison, "unused kernel");
You obviously have not tested this code, since the first return makes
the second unreachable.
So you will need to put __initbss annotations all over the tree to
actually populate and then free this section (after you have fixed
your code). Before we do that, could we have an estimate of how much
memory it actually frees up, especially since the zImage compression
should ensure that zero initialized PROGBITS .data does not take very
much additional space in the first place.
--
Ard.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
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^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:22 ` Ard Biesheuvel
0 siblings, 0 replies; 31+ messages in thread
From: Ard Biesheuvel @ 2015-10-12 8:22 UTC (permalink / raw)
To: yalin wang
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, mcgrof, Andrew Morton,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
> ---
> arch/arm/kernel/vmlinux.lds.S | 2 +-
> arch/arm/mm/init.c | 1 +
> include/asm-generic/sections.h | 1 +
> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
> include/linux/init.h | 1 +
> include/linux/mm.h | 4 +++-
> 6 files changed, 17 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
> index 8b60fde..ad6d740 100644
> --- a/arch/arm/kernel/vmlinux.lds.S
> +++ b/arch/arm/kernel/vmlinux.lds.S
> @@ -330,7 +330,7 @@ SECTIONS
> }
> #endif
>
> - BSS_SECTION(0, 0, 0)
> + BSS_SECTION(0, 0, 0, 0)
> _end = .;
>
> STABS_DEBUG
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 8a63b4c..50b881e 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -722,6 +722,7 @@ void free_initmem(void)
> free_tcmmem();
>
> poison_init_mem(__init_begin, __init_end - __init_begin);
> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
> if (!machine_is_integrator() && !machine_is_cintegrator())
> free_initmem_default(-1);
> }
> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
> index b58fd66..a63ebe9 100644
> --- a/include/asm-generic/sections.h
> +++ b/include/asm-generic/sections.h
> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
> extern char _data[], _sdata[], _edata[];
> extern char __bss_start[], __bss_stop[];
> extern char __init_begin[], __init_end[];
> +extern char __initbss_start[], __initbss_end[];
> extern char _sinittext[], _einittext[];
> extern char _end[];
> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index c4bd0e2..b3db62d 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -574,6 +574,14 @@
> *(COMMON) \
> }
>
> +#define INITBSS(initbss_align) \
> + . = ALIGN(initbss_align); \
> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
> + VMLINUX_SYMBOL(__initbss_start) = .; \
> + *(.bss.init.data) \
> + VMLINUX_SYMBOL(__initbss_end) = .; \
> + }
> +
> /*
> * DWARF debug sections.
> * Symbols in the DWARF debugging sections are relative to
> @@ -831,10 +839,11 @@
> INIT_RAM_FS \
> }
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> . = ALIGN(sbss_align); \
> VMLINUX_SYMBOL(__bss_start) = .; \
> SBSS(sbss_align) \
> BSS(bss_align) \
> + INITBSS(initbss_align) \
> . = ALIGN(stop_align); \
> VMLINUX_SYMBOL(__bss_stop) = .;
> diff --git a/include/linux/init.h b/include/linux/init.h
> index b449f37..f2960b2 100644
> --- a/include/linux/init.h
> +++ b/include/linux/init.h
> @@ -41,6 +41,7 @@
> discard it in modules) */
> #define __init __section(.init.text) __cold notrace
> #define __initdata __section(.init.data)
> +#define __initbss __section(.bss.init.data)
Shouldn't this be .init.bss ?
> #define __initconst __constsection(.init.rodata)
> #define __exitdata __section(.exit.data)
> #define __exit_call __used __section(.exitcall.exit)
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index d30eea3..1f266f7 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -21,6 +21,7 @@
> #include <linux/resource.h>
> #include <linux/page_ext.h>
> #include <linux/err.h>
> +#include <asm/sections.h>
>
> struct mempolicy;
> struct anon_vma;
> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
> */
> static inline unsigned long free_initmem_default(int poison)
> {
> - extern char __init_begin[], __init_end[];
>
> return free_reserved_area(&__init_begin, &__init_end,
> poison, "unused kernel");
> + return free_reserved_area(&__initbss_start, &__initbss_end,
> + poison, "unused kernel");
You obviously have not tested this code, since the first return makes
the second unreachable.
So you will need to put __initbss annotations all over the tree to
actually populate and then free this section (after you have fixed
your code). Before we do that, could we have an estimate of how much
memory it actually frees up, especially since the zImage compression
should ensure that zero initialized PROGBITS .data does not take very
much additional space in the first place.
--
Ard.
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:22 ` Ard Biesheuvel
0 siblings, 0 replies; 31+ messages in thread
From: Ard Biesheuvel @ 2015-10-12 8:22 UTC (permalink / raw)
To: yalin wang
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, mcgrof, Andrew Morton,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
> ---
> arch/arm/kernel/vmlinux.lds.S | 2 +-
> arch/arm/mm/init.c | 1 +
> include/asm-generic/sections.h | 1 +
> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
> include/linux/init.h | 1 +
> include/linux/mm.h | 4 +++-
> 6 files changed, 17 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
> index 8b60fde..ad6d740 100644
> --- a/arch/arm/kernel/vmlinux.lds.S
> +++ b/arch/arm/kernel/vmlinux.lds.S
> @@ -330,7 +330,7 @@ SECTIONS
> }
> #endif
>
> - BSS_SECTION(0, 0, 0)
> + BSS_SECTION(0, 0, 0, 0)
> _end = .;
>
> STABS_DEBUG
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 8a63b4c..50b881e 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -722,6 +722,7 @@ void free_initmem(void)
> free_tcmmem();
>
> poison_init_mem(__init_begin, __init_end - __init_begin);
> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
> if (!machine_is_integrator() && !machine_is_cintegrator())
> free_initmem_default(-1);
> }
> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
> index b58fd66..a63ebe9 100644
> --- a/include/asm-generic/sections.h
> +++ b/include/asm-generic/sections.h
> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
> extern char _data[], _sdata[], _edata[];
> extern char __bss_start[], __bss_stop[];
> extern char __init_begin[], __init_end[];
> +extern char __initbss_start[], __initbss_end[];
> extern char _sinittext[], _einittext[];
> extern char _end[];
> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index c4bd0e2..b3db62d 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -574,6 +574,14 @@
> *(COMMON) \
> }
>
> +#define INITBSS(initbss_align) \
> + . = ALIGN(initbss_align); \
> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
> + VMLINUX_SYMBOL(__initbss_start) = .; \
> + *(.bss.init.data) \
> + VMLINUX_SYMBOL(__initbss_end) = .; \
> + }
> +
> /*
> * DWARF debug sections.
> * Symbols in the DWARF debugging sections are relative to
> @@ -831,10 +839,11 @@
> INIT_RAM_FS \
> }
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> . = ALIGN(sbss_align); \
> VMLINUX_SYMBOL(__bss_start) = .; \
> SBSS(sbss_align) \
> BSS(bss_align) \
> + INITBSS(initbss_align) \
> . = ALIGN(stop_align); \
> VMLINUX_SYMBOL(__bss_stop) = .;
> diff --git a/include/linux/init.h b/include/linux/init.h
> index b449f37..f2960b2 100644
> --- a/include/linux/init.h
> +++ b/include/linux/init.h
> @@ -41,6 +41,7 @@
> discard it in modules) */
> #define __init __section(.init.text) __cold notrace
> #define __initdata __section(.init.data)
> +#define __initbss __section(.bss.init.data)
Shouldn't this be .init.bss ?
> #define __initconst __constsection(.init.rodata)
> #define __exitdata __section(.exit.data)
> #define __exit_call __used __section(.exitcall.exit)
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index d30eea3..1f266f7 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -21,6 +21,7 @@
> #include <linux/resource.h>
> #include <linux/page_ext.h>
> #include <linux/err.h>
> +#include <asm/sections.h>
>
> struct mempolicy;
> struct anon_vma;
> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
> */
> static inline unsigned long free_initmem_default(int poison)
> {
> - extern char __init_begin[], __init_end[];
>
> return free_reserved_area(&__init_begin, &__init_end,
> poison, "unused kernel");
> + return free_reserved_area(&__initbss_start, &__initbss_end,
> + poison, "unused kernel");
You obviously have not tested this code, since the first return makes
the second unreachable.
So you will need to put __initbss annotations all over the tree to
actually populate and then free this section (after you have fixed
your code). Before we do that, could we have an estimate of how much
memory it actually frees up, especially since the zImage compression
should ensure that zero initialized PROGBITS .data does not take very
much additional space in the first place.
--
Ard.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:22 ` Ard Biesheuvel
0 siblings, 0 replies; 31+ messages in thread
From: Ard Biesheuvel @ 2015-10-12 8:22 UTC (permalink / raw)
To: linux-arm-kernel
On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
> ---
> arch/arm/kernel/vmlinux.lds.S | 2 +-
> arch/arm/mm/init.c | 1 +
> include/asm-generic/sections.h | 1 +
> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
> include/linux/init.h | 1 +
> include/linux/mm.h | 4 +++-
> 6 files changed, 17 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
> index 8b60fde..ad6d740 100644
> --- a/arch/arm/kernel/vmlinux.lds.S
> +++ b/arch/arm/kernel/vmlinux.lds.S
> @@ -330,7 +330,7 @@ SECTIONS
> }
> #endif
>
> - BSS_SECTION(0, 0, 0)
> + BSS_SECTION(0, 0, 0, 0)
> _end = .;
>
> STABS_DEBUG
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 8a63b4c..50b881e 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -722,6 +722,7 @@ void free_initmem(void)
> free_tcmmem();
>
> poison_init_mem(__init_begin, __init_end - __init_begin);
> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
> if (!machine_is_integrator() && !machine_is_cintegrator())
> free_initmem_default(-1);
> }
> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
> index b58fd66..a63ebe9 100644
> --- a/include/asm-generic/sections.h
> +++ b/include/asm-generic/sections.h
> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
> extern char _data[], _sdata[], _edata[];
> extern char __bss_start[], __bss_stop[];
> extern char __init_begin[], __init_end[];
> +extern char __initbss_start[], __initbss_end[];
> extern char _sinittext[], _einittext[];
> extern char _end[];
> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index c4bd0e2..b3db62d 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -574,6 +574,14 @@
> *(COMMON) \
> }
>
> +#define INITBSS(initbss_align) \
> + . = ALIGN(initbss_align); \
> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
> + VMLINUX_SYMBOL(__initbss_start) = .; \
> + *(.bss.init.data) \
> + VMLINUX_SYMBOL(__initbss_end) = .; \
> + }
> +
> /*
> * DWARF debug sections.
> * Symbols in the DWARF debugging sections are relative to
> @@ -831,10 +839,11 @@
> INIT_RAM_FS \
> }
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> . = ALIGN(sbss_align); \
> VMLINUX_SYMBOL(__bss_start) = .; \
> SBSS(sbss_align) \
> BSS(bss_align) \
> + INITBSS(initbss_align) \
> . = ALIGN(stop_align); \
> VMLINUX_SYMBOL(__bss_stop) = .;
> diff --git a/include/linux/init.h b/include/linux/init.h
> index b449f37..f2960b2 100644
> --- a/include/linux/init.h
> +++ b/include/linux/init.h
> @@ -41,6 +41,7 @@
> discard it in modules) */
> #define __init __section(.init.text) __cold notrace
> #define __initdata __section(.init.data)
> +#define __initbss __section(.bss.init.data)
Shouldn't this be .init.bss ?
> #define __initconst __constsection(.init.rodata)
> #define __exitdata __section(.exit.data)
> #define __exit_call __used __section(.exitcall.exit)
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index d30eea3..1f266f7 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -21,6 +21,7 @@
> #include <linux/resource.h>
> #include <linux/page_ext.h>
> #include <linux/err.h>
> +#include <asm/sections.h>
>
> struct mempolicy;
> struct anon_vma;
> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
> */
> static inline unsigned long free_initmem_default(int poison)
> {
> - extern char __init_begin[], __init_end[];
>
> return free_reserved_area(&__init_begin, &__init_end,
> poison, "unused kernel");
> + return free_reserved_area(&__initbss_start, &__initbss_end,
> + poison, "unused kernel");
You obviously have not tested this code, since the first return makes
the second unreachable.
So you will need to put __initbss annotations all over the tree to
actually populate and then free this section (after you have fixed
your code). Before we do that, could we have an estimate of how much
memory it actually frees up, especially since the zImage compression
should ensure that zero initialized PROGBITS .data does not take very
much additional space in the first place.
--
Ard.
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-12 8:22 ` Ard Biesheuvel
` (2 preceding siblings ...)
(?)
@ 2015-10-12 8:46 ` yalin wang
-1 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 8:46 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, Luis R. Rodriguez, Andrew Morton,
Kirill A. Shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, Vlastimil Babka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
> On Oct 12, 2015, at 16:22, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>
> On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
>> This attribute can make init data to be into .initbss section,
>> this will make the data to be NO_BITS in vmlinux, can shrink the
>> Image file size, and speed up the boot up time.
>>
>> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
>> ---
>> arch/arm/kernel/vmlinux.lds.S | 2 +-
>> arch/arm/mm/init.c | 1 +
>> include/asm-generic/sections.h | 1 +
>> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
>> include/linux/init.h | 1 +
>> include/linux/mm.h | 4 +++-
>> 6 files changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
>> index 8b60fde..ad6d740 100644
>> --- a/arch/arm/kernel/vmlinux.lds.S
>> +++ b/arch/arm/kernel/vmlinux.lds.S
>> @@ -330,7 +330,7 @@ SECTIONS
>> }
>> #endif
>>
>> - BSS_SECTION(0, 0, 0)
>> + BSS_SECTION(0, 0, 0, 0)
>> _end = .;
>>
>> STABS_DEBUG
>> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
>> index 8a63b4c..50b881e 100644
>> --- a/arch/arm/mm/init.c
>> +++ b/arch/arm/mm/init.c
>> @@ -722,6 +722,7 @@ void free_initmem(void)
>> free_tcmmem();
>>
>> poison_init_mem(__init_begin, __init_end - __init_begin);
>> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
>> if (!machine_is_integrator() && !machine_is_cintegrator())
>> free_initmem_default(-1);
>> }
>> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
>> index b58fd66..a63ebe9 100644
>> --- a/include/asm-generic/sections.h
>> +++ b/include/asm-generic/sections.h
>> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
>> extern char _data[], _sdata[], _edata[];
>> extern char __bss_start[], __bss_stop[];
>> extern char __init_begin[], __init_end[];
>> +extern char __initbss_start[], __initbss_end[];
>> extern char _sinittext[], _einittext[];
>> extern char _end[];
>> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2..b3db62d 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -574,6 +574,14 @@
>> *(COMMON) \
>> }
>>
>> +#define INITBSS(initbss_align) \
>> + . = ALIGN(initbss_align); \
>> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
>> + VMLINUX_SYMBOL(__initbss_start) = .; \
>> + *(.bss.init.data) \
>> + VMLINUX_SYMBOL(__initbss_end) = .; \
>> + }
>> +
>> /*
>> * DWARF debug sections.
>> * Symbols in the DWARF debugging sections are relative to
>> @@ -831,10 +839,11 @@
>> INIT_RAM_FS \
>> }
>>
>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>> . = ALIGN(sbss_align); \
>> VMLINUX_SYMBOL(__bss_start) = .; \
>> SBSS(sbss_align) \
>> BSS(bss_align) \
>> + INITBSS(initbss_align) \
>> . = ALIGN(stop_align); \
>> VMLINUX_SYMBOL(__bss_stop) = .;
>> diff --git a/include/linux/init.h b/include/linux/init.h
>> index b449f37..f2960b2 100644
>> --- a/include/linux/init.h
>> +++ b/include/linux/init.h
>> @@ -41,6 +41,7 @@
>> discard it in modules) */
>> #define __init __section(.init.text) __cold notrace
>> #define __initdata __section(.init.data)
>> +#define __initbss __section(.bss.init.data)
>
> Shouldn't this be .init.bss ?
>
>> #define __initconst __constsection(.init.rodata)
>> #define __exitdata __section(.exit.data)
>> #define __exit_call __used __section(.exitcall.exit)
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index d30eea3..1f266f7 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -21,6 +21,7 @@
>> #include <linux/resource.h>
>> #include <linux/page_ext.h>
>> #include <linux/err.h>
>> +#include <asm/sections.h>
>>
>> struct mempolicy;
>> struct anon_vma;
>> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
>> */
>> static inline unsigned long free_initmem_default(int poison)
>> {
>> - extern char __init_begin[], __init_end[];
>>
>> return free_reserved_area(&__init_begin, &__init_end,
>> poison, "unused kernel");
>> + return free_reserved_area(&__initbss_start, &__initbss_end,
>> + poison, "unused kernel");
>
> You obviously have not tested this code, since the first return makes
> the second unreachable.
>
> So you will need to put __initbss annotations all over the tree to
> actually populate and then free this section (after you have fixed
> your code). Before we do that, could we have an estimate of how much
> memory it actually frees up, especially since the zImage compression
> should ensure that zero initialized PROGBITS .data does not take very
> much additional space in the first place.
>
> --
> Ard.
yeah, I just compile it , not test it . because i need replace lots of __initdata variable to __initbss first .
i don’t think zImage compression can shrink zero data in .data section ,
in current __initdata implementation , the zero initialized data are mixed with non-zero data,
for example:
int a = 20 __initdata;
int b __initdata; // zero initialized data
int c = 30 __initdata;
so the zero data are not in a contineous memory area, compress will not benefit from this scenario,
and on some platforms like arm64 , don’t compress compress zImage ,
i will make a test in some time later, and send out the result to see if this method is better .
Thanks
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:46 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 8:46 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, Luis R. Rodriguez, Andrew Morton,
Kirill A. Shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, Vlastimil Babka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel
> On Oct 12, 2015, at 16:22, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>
> On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
>> This attribute can make init data to be into .initbss section,
>> this will make the data to be NO_BITS in vmlinux, can shrink the
>> Image file size, and speed up the boot up time.
>>
>> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
>> ---
>> arch/arm/kernel/vmlinux.lds.S | 2 +-
>> arch/arm/mm/init.c | 1 +
>> include/asm-generic/sections.h | 1 +
>> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
>> include/linux/init.h | 1 +
>> include/linux/mm.h | 4 +++-
>> 6 files changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
>> index 8b60fde..ad6d740 100644
>> --- a/arch/arm/kernel/vmlinux.lds.S
>> +++ b/arch/arm/kernel/vmlinux.lds.S
>> @@ -330,7 +330,7 @@ SECTIONS
>> }
>> #endif
>>
>> - BSS_SECTION(0, 0, 0)
>> + BSS_SECTION(0, 0, 0, 0)
>> _end = .;
>>
>> STABS_DEBUG
>> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
>> index 8a63b4c..50b881e 100644
>> --- a/arch/arm/mm/init.c
>> +++ b/arch/arm/mm/init.c
>> @@ -722,6 +722,7 @@ void free_initmem(void)
>> free_tcmmem();
>>
>> poison_init_mem(__init_begin, __init_end - __init_begin);
>> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
>> if (!machine_is_integrator() && !machine_is_cintegrator())
>> free_initmem_default(-1);
>> }
>> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
>> index b58fd66..a63ebe9 100644
>> --- a/include/asm-generic/sections.h
>> +++ b/include/asm-generic/sections.h
>> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
>> extern char _data[], _sdata[], _edata[];
>> extern char __bss_start[], __bss_stop[];
>> extern char __init_begin[], __init_end[];
>> +extern char __initbss_start[], __initbss_end[];
>> extern char _sinittext[], _einittext[];
>> extern char _end[];
>> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2..b3db62d 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -574,6 +574,14 @@
>> *(COMMON) \
>> }
>>
>> +#define INITBSS(initbss_align) \
>> + . = ALIGN(initbss_align); \
>> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
>> + VMLINUX_SYMBOL(__initbss_start) = .; \
>> + *(.bss.init.data) \
>> + VMLINUX_SYMBOL(__initbss_end) = .; \
>> + }
>> +
>> /*
>> * DWARF debug sections.
>> * Symbols in the DWARF debugging sections are relative to
>> @@ -831,10 +839,11 @@
>> INIT_RAM_FS \
>> }
>>
>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>> . = ALIGN(sbss_align); \
>> VMLINUX_SYMBOL(__bss_start) = .; \
>> SBSS(sbss_align) \
>> BSS(bss_align) \
>> + INITBSS(initbss_align) \
>> . = ALIGN(stop_align); \
>> VMLINUX_SYMBOL(__bss_stop) = .;
>> diff --git a/include/linux/init.h b/include/linux/init.h
>> index b449f37..f2960b2 100644
>> --- a/include/linux/init.h
>> +++ b/include/linux/init.h
>> @@ -41,6 +41,7 @@
>> discard it in modules) */
>> #define __init __section(.init.text) __cold notrace
>> #define __initdata __section(.init.data)
>> +#define __initbss __section(.bss.init.data)
>
> Shouldn't this be .init.bss ?
>
>> #define __initconst __constsection(.init.rodata)
>> #define __exitdata __section(.exit.data)
>> #define __exit_call __used __section(.exitcall.exit)
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index d30eea3..1f266f7 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -21,6 +21,7 @@
>> #include <linux/resource.h>
>> #include <linux/page_ext.h>
>> #include <linux/err.h>
>> +#include <asm/sections.h>
>>
>> struct mempolicy;
>> struct anon_vma;
>> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
>> */
>> static inline unsigned long free_initmem_default(int poison)
>> {
>> - extern char __init_begin[], __init_end[];
>>
>> return free_reserved_area(&__init_begin, &__init_end,
>> poison, "unused kernel");
>> + return free_reserved_area(&__initbss_start, &__initbss_end,
>> + poison, "unused kernel");
>
> You obviously have not tested this code, since the first return makes
> the second unreachable.
>
> So you will need to put __initbss annotations all over the tree to
> actually populate and then free this section (after you have fixed
> your code). Before we do that, could we have an estimate of how much
> memory it actually frees up, especially since the zImage compression
> should ensure that zero initialized PROGBITS .data does not take very
> much additional space in the first place.
>
> --
> Ard.
yeah, I just compile it , not test it . because i need replace lots of __initdata variable to __initbss first .
i don’t think zImage compression can shrink zero data in .data section ,
in current __initdata implementation , the zero initialized data are mixed with non-zero data,
for example:
int a = 20 __initdata;
int b __initdata; // zero initialized data
int c = 30 __initdata;
so the zero data are not in a contineous memory area, compress will not benefit from this scenario,
and on some platforms like arm64 , don’t compress compress zImage ,
i will make a test in some time later, and send out the result to see if this method is better .
Thanks
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:46 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 8:46 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, Luis R. Rodriguez, Andrew Morton,
Kirill A. Shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, Vlastimil Babka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
> On Oct 12, 2015, at 16:22, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>
> On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
>> This attribute can make init data to be into .initbss section,
>> this will make the data to be NO_BITS in vmlinux, can shrink the
>> Image file size, and speed up the boot up time.
>>
>> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
>> ---
>> arch/arm/kernel/vmlinux.lds.S | 2 +-
>> arch/arm/mm/init.c | 1 +
>> include/asm-generic/sections.h | 1 +
>> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
>> include/linux/init.h | 1 +
>> include/linux/mm.h | 4 +++-
>> 6 files changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
>> index 8b60fde..ad6d740 100644
>> --- a/arch/arm/kernel/vmlinux.lds.S
>> +++ b/arch/arm/kernel/vmlinux.lds.S
>> @@ -330,7 +330,7 @@ SECTIONS
>> }
>> #endif
>>
>> - BSS_SECTION(0, 0, 0)
>> + BSS_SECTION(0, 0, 0, 0)
>> _end = .;
>>
>> STABS_DEBUG
>> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
>> index 8a63b4c..50b881e 100644
>> --- a/arch/arm/mm/init.c
>> +++ b/arch/arm/mm/init.c
>> @@ -722,6 +722,7 @@ void free_initmem(void)
>> free_tcmmem();
>>
>> poison_init_mem(__init_begin, __init_end - __init_begin);
>> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
>> if (!machine_is_integrator() && !machine_is_cintegrator())
>> free_initmem_default(-1);
>> }
>> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
>> index b58fd66..a63ebe9 100644
>> --- a/include/asm-generic/sections.h
>> +++ b/include/asm-generic/sections.h
>> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
>> extern char _data[], _sdata[], _edata[];
>> extern char __bss_start[], __bss_stop[];
>> extern char __init_begin[], __init_end[];
>> +extern char __initbss_start[], __initbss_end[];
>> extern char _sinittext[], _einittext[];
>> extern char _end[];
>> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2..b3db62d 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -574,6 +574,14 @@
>> *(COMMON) \
>> }
>>
>> +#define INITBSS(initbss_align) \
>> + . = ALIGN(initbss_align); \
>> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
>> + VMLINUX_SYMBOL(__initbss_start) = .; \
>> + *(.bss.init.data) \
>> + VMLINUX_SYMBOL(__initbss_end) = .; \
>> + }
>> +
>> /*
>> * DWARF debug sections.
>> * Symbols in the DWARF debugging sections are relative to
>> @@ -831,10 +839,11 @@
>> INIT_RAM_FS \
>> }
>>
>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>> . = ALIGN(sbss_align); \
>> VMLINUX_SYMBOL(__bss_start) = .; \
>> SBSS(sbss_align) \
>> BSS(bss_align) \
>> + INITBSS(initbss_align) \
>> . = ALIGN(stop_align); \
>> VMLINUX_SYMBOL(__bss_stop) = .;
>> diff --git a/include/linux/init.h b/include/linux/init.h
>> index b449f37..f2960b2 100644
>> --- a/include/linux/init.h
>> +++ b/include/linux/init.h
>> @@ -41,6 +41,7 @@
>> discard it in modules) */
>> #define __init __section(.init.text) __cold notrace
>> #define __initdata __section(.init.data)
>> +#define __initbss __section(.bss.init.data)
>
> Shouldn't this be .init.bss ?
>
>> #define __initconst __constsection(.init.rodata)
>> #define __exitdata __section(.exit.data)
>> #define __exit_call __used __section(.exitcall.exit)
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index d30eea3..1f266f7 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -21,6 +21,7 @@
>> #include <linux/resource.h>
>> #include <linux/page_ext.h>
>> #include <linux/err.h>
>> +#include <asm/sections.h>
>>
>> struct mempolicy;
>> struct anon_vma;
>> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
>> */
>> static inline unsigned long free_initmem_default(int poison)
>> {
>> - extern char __init_begin[], __init_end[];
>>
>> return free_reserved_area(&__init_begin, &__init_end,
>> poison, "unused kernel");
>> + return free_reserved_area(&__initbss_start, &__initbss_end,
>> + poison, "unused kernel");
>
> You obviously have not tested this code, since the first return makes
> the second unreachable.
>
> So you will need to put __initbss annotations all over the tree to
> actually populate and then free this section (after you have fixed
> your code). Before we do that, could we have an estimate of how much
> memory it actually frees up, especially since the zImage compression
> should ensure that zero initialized PROGBITS .data does not take very
> much additional space in the first place.
>
> --
> Ard.
yeah, I just compile it , not test it . because i need replace lots of __initdata variable to __initbss first .
i don’t think zImage compression can shrink zero data in .data section ,
in current __initdata implementation , the zero initialized data are mixed with non-zero data,
for example:
int a = 20 __initdata;
int b __initdata; // zero initialized data
int c = 30 __initdata;
so the zero data are not in a contineous memory area, compress will not benefit from this scenario,
and on some platforms like arm64 , don’t compress compress zImage ,
i will make a test in some time later, and send out the result to see if this method is better .
Thanks
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:46 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 8:46 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: Russell King - ARM Linux, Arnd Bergmann, Will Deacon,
Nicolas Pitre, Kees Cook, Catalin Marinas, Victor Kamensky,
Mark Salter, vladimir.murzin, ggdavisiv, paul.gortmaker,
Ingo Molnar, Rusty Russell, Luis R. Rodriguez, Andrew Morton,
Kirill A. Shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, Vlastimil Babka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
> On Oct 12, 2015, at 16:22, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>
> On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
>> This attribute can make init data to be into .initbss section,
>> this will make the data to be NO_BITS in vmlinux, can shrink the
>> Image file size, and speed up the boot up time.
>>
>> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
>> ---
>> arch/arm/kernel/vmlinux.lds.S | 2 +-
>> arch/arm/mm/init.c | 1 +
>> include/asm-generic/sections.h | 1 +
>> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
>> include/linux/init.h | 1 +
>> include/linux/mm.h | 4 +++-
>> 6 files changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
>> index 8b60fde..ad6d740 100644
>> --- a/arch/arm/kernel/vmlinux.lds.S
>> +++ b/arch/arm/kernel/vmlinux.lds.S
>> @@ -330,7 +330,7 @@ SECTIONS
>> }
>> #endif
>>
>> - BSS_SECTION(0, 0, 0)
>> + BSS_SECTION(0, 0, 0, 0)
>> _end = .;
>>
>> STABS_DEBUG
>> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
>> index 8a63b4c..50b881e 100644
>> --- a/arch/arm/mm/init.c
>> +++ b/arch/arm/mm/init.c
>> @@ -722,6 +722,7 @@ void free_initmem(void)
>> free_tcmmem();
>>
>> poison_init_mem(__init_begin, __init_end - __init_begin);
>> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
>> if (!machine_is_integrator() && !machine_is_cintegrator())
>> free_initmem_default(-1);
>> }
>> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
>> index b58fd66..a63ebe9 100644
>> --- a/include/asm-generic/sections.h
>> +++ b/include/asm-generic/sections.h
>> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
>> extern char _data[], _sdata[], _edata[];
>> extern char __bss_start[], __bss_stop[];
>> extern char __init_begin[], __init_end[];
>> +extern char __initbss_start[], __initbss_end[];
>> extern char _sinittext[], _einittext[];
>> extern char _end[];
>> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2..b3db62d 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -574,6 +574,14 @@
>> *(COMMON) \
>> }
>>
>> +#define INITBSS(initbss_align) \
>> + . = ALIGN(initbss_align); \
>> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
>> + VMLINUX_SYMBOL(__initbss_start) = .; \
>> + *(.bss.init.data) \
>> + VMLINUX_SYMBOL(__initbss_end) = .; \
>> + }
>> +
>> /*
>> * DWARF debug sections.
>> * Symbols in the DWARF debugging sections are relative to
>> @@ -831,10 +839,11 @@
>> INIT_RAM_FS \
>> }
>>
>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>> . = ALIGN(sbss_align); \
>> VMLINUX_SYMBOL(__bss_start) = .; \
>> SBSS(sbss_align) \
>> BSS(bss_align) \
>> + INITBSS(initbss_align) \
>> . = ALIGN(stop_align); \
>> VMLINUX_SYMBOL(__bss_stop) = .;
>> diff --git a/include/linux/init.h b/include/linux/init.h
>> index b449f37..f2960b2 100644
>> --- a/include/linux/init.h
>> +++ b/include/linux/init.h
>> @@ -41,6 +41,7 @@
>> discard it in modules) */
>> #define __init __section(.init.text) __cold notrace
>> #define __initdata __section(.init.data)
>> +#define __initbss __section(.bss.init.data)
>
> Shouldn't this be .init.bss ?
>
>> #define __initconst __constsection(.init.rodata)
>> #define __exitdata __section(.exit.data)
>> #define __exit_call __used __section(.exitcall.exit)
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index d30eea3..1f266f7 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -21,6 +21,7 @@
>> #include <linux/resource.h>
>> #include <linux/page_ext.h>
>> #include <linux/err.h>
>> +#include <asm/sections.h>
>>
>> struct mempolicy;
>> struct anon_vma;
>> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
>> */
>> static inline unsigned long free_initmem_default(int poison)
>> {
>> - extern char __init_begin[], __init_end[];
>>
>> return free_reserved_area(&__init_begin, &__init_end,
>> poison, "unused kernel");
>> + return free_reserved_area(&__initbss_start, &__initbss_end,
>> + poison, "unused kernel");
>
> You obviously have not tested this code, since the first return makes
> the second unreachable.
>
> So you will need to put __initbss annotations all over the tree to
> actually populate and then free this section (after you have fixed
> your code). Before we do that, could we have an estimate of how much
> memory it actually frees up, especially since the zImage compression
> should ensure that zero initialized PROGBITS .data does not take very
> much additional space in the first place.
>
> --
> Ard.
yeah, I just compile it , not test it . because i need replace lots of __initdata variable to __initbss first .
i don’t think zImage compression can shrink zero data in .data section ,
in current __initdata implementation , the zero initialized data are mixed with non-zero data,
for example:
int a = 20 __initdata;
int b __initdata; // zero initialized data
int c = 30 __initdata;
so the zero data are not in a contineous memory area, compress will not benefit from this scenario,
and on some platforms like arm64 , don’t compress compress zImage ,
i will make a test in some time later, and send out the result to see if this method is better .
Thanks
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
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^ permalink raw reply [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-12 8:46 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-12 8:46 UTC (permalink / raw)
To: linux-arm-kernel
> On Oct 12, 2015, at 16:22, Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
>
> On 12 October 2015 at 05:59, yalin wang <yalin.wang2010@gmail.com> wrote:
>> This attribute can make init data to be into .initbss section,
>> this will make the data to be NO_BITS in vmlinux, can shrink the
>> Image file size, and speed up the boot up time.
>>
>> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
>> ---
>> arch/arm/kernel/vmlinux.lds.S | 2 +-
>> arch/arm/mm/init.c | 1 +
>> include/asm-generic/sections.h | 1 +
>> include/asm-generic/vmlinux.lds.h | 11 ++++++++++-
>> include/linux/init.h | 1 +
>> include/linux/mm.h | 4 +++-
>> 6 files changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
>> index 8b60fde..ad6d740 100644
>> --- a/arch/arm/kernel/vmlinux.lds.S
>> +++ b/arch/arm/kernel/vmlinux.lds.S
>> @@ -330,7 +330,7 @@ SECTIONS
>> }
>> #endif
>>
>> - BSS_SECTION(0, 0, 0)
>> + BSS_SECTION(0, 0, 0, 0)
>> _end = .;
>>
>> STABS_DEBUG
>> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
>> index 8a63b4c..50b881e 100644
>> --- a/arch/arm/mm/init.c
>> +++ b/arch/arm/mm/init.c
>> @@ -722,6 +722,7 @@ void free_initmem(void)
>> free_tcmmem();
>>
>> poison_init_mem(__init_begin, __init_end - __init_begin);
>> + poison_init_mem(__initbss_start, __initbss_start - __initbss_end);
>> if (!machine_is_integrator() && !machine_is_cintegrator())
>> free_initmem_default(-1);
>> }
>> diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
>> index b58fd66..a63ebe9 100644
>> --- a/include/asm-generic/sections.h
>> +++ b/include/asm-generic/sections.h
>> @@ -29,6 +29,7 @@ extern char _text[], _stext[], _etext[];
>> extern char _data[], _sdata[], _edata[];
>> extern char __bss_start[], __bss_stop[];
>> extern char __init_begin[], __init_end[];
>> +extern char __initbss_start[], __initbss_end[];
>> extern char _sinittext[], _einittext[];
>> extern char _end[];
>> extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2..b3db62d 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -574,6 +574,14 @@
>> *(COMMON) \
>> }
>>
>> +#define INITBSS(initbss_align) \
>> + . = ALIGN(initbss_align); \
>> + .initbss : AT(ADDR(.initbss) - LOAD_OFFSET) { \
>> + VMLINUX_SYMBOL(__initbss_start) = .; \
>> + *(.bss.init.data) \
>> + VMLINUX_SYMBOL(__initbss_end) = .; \
>> + }
>> +
>> /*
>> * DWARF debug sections.
>> * Symbols in the DWARF debugging sections are relative to
>> @@ -831,10 +839,11 @@
>> INIT_RAM_FS \
>> }
>>
>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>> . = ALIGN(sbss_align); \
>> VMLINUX_SYMBOL(__bss_start) = .; \
>> SBSS(sbss_align) \
>> BSS(bss_align) \
>> + INITBSS(initbss_align) \
>> . = ALIGN(stop_align); \
>> VMLINUX_SYMBOL(__bss_stop) = .;
>> diff --git a/include/linux/init.h b/include/linux/init.h
>> index b449f37..f2960b2 100644
>> --- a/include/linux/init.h
>> +++ b/include/linux/init.h
>> @@ -41,6 +41,7 @@
>> discard it in modules) */
>> #define __init __section(.init.text) __cold notrace
>> #define __initdata __section(.init.data)
>> +#define __initbss __section(.bss.init.data)
>
> Shouldn't this be .init.bss ?
>
>> #define __initconst __constsection(.init.rodata)
>> #define __exitdata __section(.exit.data)
>> #define __exit_call __used __section(.exitcall.exit)
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index d30eea3..1f266f7 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -21,6 +21,7 @@
>> #include <linux/resource.h>
>> #include <linux/page_ext.h>
>> #include <linux/err.h>
>> +#include <asm/sections.h>
>>
>> struct mempolicy;
>> struct anon_vma;
>> @@ -1722,10 +1723,11 @@ static inline void mark_page_reserved(struct page *page)
>> */
>> static inline unsigned long free_initmem_default(int poison)
>> {
>> - extern char __init_begin[], __init_end[];
>>
>> return free_reserved_area(&__init_begin, &__init_end,
>> poison, "unused kernel");
>> + return free_reserved_area(&__initbss_start, &__initbss_end,
>> + poison, "unused kernel");
>
> You obviously have not tested this code, since the first return makes
> the second unreachable.
>
> So you will need to put __initbss annotations all over the tree to
> actually populate and then free this section (after you have fixed
> your code). Before we do that, could we have an estimate of how much
> memory it actually frees up, especially since the zImage compression
> should ensure that zero initialized PROGBITS .data does not take very
> much additional space in the first place.
>
> --
> Ard.
yeah, I just compile it , not test it . because i need replace lots of __initdata variable to __initbss first .
i don?t think zImage compression can shrink zero data in .data section ,
in current __initdata implementation , the zero initialized data are mixed with non-zero data,
for example:
int a = 20 __initdata;
int b __initdata; // zero initialized data
int c = 30 __initdata;
so the zero data are not in a contineous memory area, compress will not benefit from this scenario,
and on some platforms like arm64 , don?t compress compress zImage ,
i will make a test in some time later, and send out the result to see if this method is better .
Thanks
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-12 3:59 ` yalin wang
(?)
@ 2015-10-12 10:21 ` Arnd Bergmann
-1 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-12 10:21 UTC (permalink / raw)
To: yalin wang
Cc: linux, ard.biesheuvel, will.deacon, nico, keescook,
catalin.marinas, victor.kamensky, msalter, vladimir.murzin,
ggdavisiv, paul.gortmaker, mingo, rusty, mcgrof, akpm,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
On Monday 12 October 2015 11:59:16 yalin wang wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Do you have an estimate of how much it gains?
In multi_v7_defconfig, I see a total of 3367 symbols with
406016 bytes init.data, but only 348 bytes of those are
in zero-initialized symbols.
Arnd
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 10:21 ` Arnd Bergmann
0 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-12 10:21 UTC (permalink / raw)
To: yalin wang
Cc: linux, ard.biesheuvel, will.deacon, nico, keescook,
catalin.marinas, victor.kamensky, msalter, vladimir.murzin,
ggdavisiv, paul.gortmaker, mingo, rusty, mcgrof, akpm,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
On Monday 12 October 2015 11:59:16 yalin wang wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Do you have an estimate of how much it gains?
In multi_v7_defconfig, I see a total of 3367 symbols with
406016 bytes init.data, but only 348 bytes of those are
in zero-initialized symbols.
Arnd
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-12 10:21 ` Arnd Bergmann
0 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-12 10:21 UTC (permalink / raw)
To: linux-arm-kernel
On Monday 12 October 2015 11:59:16 yalin wang wrote:
> This attribute can make init data to be into .initbss section,
> this will make the data to be NO_BITS in vmlinux, can shrink the
> Image file size, and speed up the boot up time.
>
> Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Do you have an estimate of how much it gains?
In multi_v7_defconfig, I see a total of 3367 symbols with
406016 bytes init.data, but only 348 bytes of those are
in zero-initialized symbols.
Arnd
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-12 3:59 ` yalin wang
(?)
@ 2015-10-12 20:04 ` Sam Ravnborg
-1 siblings, 0 replies; 31+ messages in thread
From: Sam Ravnborg @ 2015-10-12 20:04 UTC (permalink / raw)
To: yalin wang
Cc: linux, arnd, ard.biesheuvel, will.deacon, nico, keescook,
catalin.marinas, victor.kamensky, msalter, vladimir.murzin,
ggdavisiv, paul.gortmaker, mingo, rusty, mcgrof, akpm,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
A few comments:
1) - please align the backslash at the end of the
line with the backslash above it.
2) - you need to fix all the remaining users of BSS_SECTION.
3) - do we really need the flexibility to specify an alignment (stop_align)?
If not - drop the extra argument.
Sam
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-12 20:04 ` Sam Ravnborg
0 siblings, 0 replies; 31+ messages in thread
From: Sam Ravnborg @ 2015-10-12 20:04 UTC (permalink / raw)
To: yalin wang
Cc: linux, arnd, ard.biesheuvel, will.deacon, nico, keescook,
catalin.marinas, victor.kamensky, msalter, vladimir.murzin,
ggdavisiv, paul.gortmaker, mingo, rusty, mcgrof, akpm,
kirill.shutemov, n-horiguchi, aarcange, mhocko, jack,
iamjoonsoo.kim, xiexiuqi, vbabka, Vineet.Gupta1,
linux-arm-kernel, linux-kernel, linux-arch, linux-mm
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
A few comments:
1) - please align the backslash at the end of the
line with the backslash above it.
2) - you need to fix all the remaining users of BSS_SECTION.
3) - do we really need the flexibility to specify an alignment (stop_align)?
If not - drop the extra argument.
Sam
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-12 20:04 ` Sam Ravnborg
0 siblings, 0 replies; 31+ messages in thread
From: Sam Ravnborg @ 2015-10-12 20:04 UTC (permalink / raw)
To: linux-arm-kernel
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
>
> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
A few comments:
1) - please align the backslash at the end of the
line with the backslash above it.
2) - you need to fix all the remaining users of BSS_SECTION.
3) - do we really need the flexibility to specify an alignment (stop_align)?
If not - drop the extra argument.
Sam
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-12 20:04 ` Sam Ravnborg
(?)
(?)
@ 2015-10-13 7:33 ` yalin wang
2015-10-13 9:40 ` Arnd Bergmann
2015-10-13 9:40 ` Arnd Bergmann
-1 siblings, 2 replies; 31+ messages in thread
From: yalin wang @ 2015-10-13 7:33 UTC (permalink / raw)
To: Sam Ravnborg
Cc: Russell King - ARM Linux, Arnd Bergmann, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
[-- Attachment #1: Type: text/plain, Size: 700 bytes --]
> On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
>
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>>
>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>
> A few comments:
>
> 1) - please align the backslash at the end of the
> line with the backslash above it.
> 2) - you need to fix all the remaining users of BSS_SECTION.
> 3) - do we really need the flexibility to specify an alignment (stop_align)?
> If not - drop the extra argument.
>
> Sam
i change lots of __initdata to __initbss to test it on ARM arch,
[-- Attachment #2: initbss_change.diff --]
[-- Type: application/octet-stream, Size: 101068 bytes --]
diff --git a/arch/alpha/kernel/smc37c669.c b/arch/alpha/kernel/smc37c669.c
index c803fc7..1f25738 100644
--- a/arch/alpha/kernel/smc37c669.c
+++ b/arch/alpha/kernel/smc37c669.c
@@ -983,7 +983,7 @@ static SMC37c669_CONFIG_REGS *SMC37c669 __initdata = NULL;
** and standard ISA IRQs.
**
*/
-static SMC37c669_IRQ_TRANSLATION_ENTRY *SMC37c669_irq_table __initdata;
+static SMC37c669_IRQ_TRANSLATION_ENTRY *SMC37c669_irq_table __initbss;
/*
** The following definition is for the default IRQ
@@ -1032,7 +1032,7 @@ static SMC37c669_IRQ_TRANSLATION_ENTRY *SMC37c669_irq_tables[] __initdata =
** ISA DMA channels.
**
*/
-static SMC37c669_DRQ_TRANSLATION_ENTRY *SMC37c669_drq_table __initdata;
+static SMC37c669_DRQ_TRANSLATION_ENTRY *SMC37c669_drq_table __initbss;
/*
** The following definition is the default DRQ
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 036473b..df36e02 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -90,7 +90,7 @@ EXPORT_SYMBOL(__machine_arch_type);
unsigned int cacheid __read_mostly;
EXPORT_SYMBOL(cacheid);
-unsigned int __atags_pointer __initdata;
+unsigned int __atags_pointer __initbss;
unsigned int system_rev;
EXPORT_SYMBOL(system_rev);
@@ -152,7 +152,7 @@ EXPORT_SYMBOL(elf_platform);
static const char *cpu_name;
static const char *machine_name;
static char __initdata cmd_line[COMMAND_LINE_SIZE];
-const struct machine_desc *machine_desc __initdata;
+const struct machine_desc *machine_desc __initbss;
static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
#define ENDIANNESS ((char)endian_test.l)
@@ -739,7 +739,7 @@ int __init arm_add_memory(u64 start, u64 size)
static int __init early_mem(char *p)
{
- static int usermem __initdata = 0;
+ static int usermem __initbss;
u64 size;
u64 start;
char *endp;
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 29e08aa..9765298 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -829,8 +829,8 @@ static struct platform_device da8xx_dsp = {
#if IS_ENABLED(CONFIG_DA8XX_REMOTEPROC)
-static phys_addr_t rproc_base __initdata;
-static unsigned long rproc_size __initdata;
+static phys_addr_t rproc_base __initbss;
+static unsigned long rproc_size __initbss;
static int __init early_rproc_mem(char *p)
{
diff --git a/arch/arm/mach-exynos/s5p-dev-mfc.c b/arch/arm/mach-exynos/s5p-dev-mfc.c
index 0b04b6b..9d7ad51 100644
--- a/arch/arm/mach-exynos/s5p-dev-mfc.c
+++ b/arch/arm/mach-exynos/s5p-dev-mfc.c
@@ -34,7 +34,7 @@ struct s5p_mfc_reserved_mem {
struct device *dev;
};
-static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initdata;
+static struct s5p_mfc_reserved_mem s5p_mfc_mem[2] __initbss;
static void __init s5p_mfc_reserve_mem(phys_addr_t rbase, unsigned int rsize,
diff --git a/arch/arm/mach-imx/devices/platform-ipu-core.c b/arch/arm/mach-imx/devices/platform-ipu-core.c
index 6bd7c3f..713b09d 100644
--- a/arch/arm/mach-imx/devices/platform-ipu-core.c
+++ b/arch/arm/mach-imx/devices/platform-ipu-core.c
@@ -28,7 +28,7 @@ const struct imx_ipu_core_data imx35_ipu_core_data __initconst =
imx_ipu_core_entry_single(MX35);
#endif
-static struct platform_device *imx_ipu_coredev __initdata;
+static struct platform_device *imx_ipu_coredev __initbss;
struct platform_device *__init imx_add_ipu_core(
const struct imx_ipu_core_data *data)
diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
index ede2bdb..6b1d3ed 100644
--- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
@@ -239,7 +239,7 @@ static struct mx2_camera_platform_data visstrim_camera = {
.clk = 100000,
};
-static phys_addr_t mx2_camera_base __initdata;
+static phys_addr_t mx2_camera_base __initbss;
#define MX2_CAMERA_BUF_SIZE SZ_8M
static void __init visstrim_analog_camera_init(void)
diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index 9ef4640..761126e 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -245,7 +245,7 @@ static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
.phy_mode = FSL_USB2_PHY_ULPI,
};
-static bool otg_mode_host __initdata;
+static bool otg_mode_host __initbss;
static int __init mx27_3ds_otg_mode(char *options)
{
diff --git a/arch/arm/mach-imx/mach-mx31_3ds.c b/arch/arm/mach-imx/mach-mx31_3ds.c
index 65a0dc0..a3c7f92 100644
--- a/arch/arm/mach-imx/mach-mx31_3ds.c
+++ b/arch/arm/mach-imx/mach-mx31_3ds.c
@@ -164,7 +164,7 @@ static int mx31_3ds_pins[] = {
/*
* Camera support
*/
-static phys_addr_t mx3_camera_base __initdata;
+static phys_addr_t mx3_camera_base __initbss;
#define MX31_3DS_CAMERA_BUF_SIZE SZ_8M
#define MX31_3DS_GPIO_CAMERA_PW IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
@@ -665,7 +665,7 @@ static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
.phy_mode = FSL_USB2_PHY_ULPI,
};
-static bool otg_mode_host __initdata;
+static bool otg_mode_host __initbss;
static int __init mx31_3ds_otg_mode(char *options)
{
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c
index bb6f8a5..d00c212 100644
--- a/arch/arm/mach-imx/mach-mx31moboard.c
+++ b/arch/arm/mach-imx/mach-mx31moboard.c
@@ -470,7 +470,7 @@ static struct mx3_camera_pdata camera_pdata __initdata = {
.mclk_10khz = 4800,
};
-static phys_addr_t mx3_camera_base __initdata;
+static phys_addr_t mx3_camera_base __initbss;
#define MX3_CAMERA_BUF_SIZE SZ_4M
static int __init mx31moboard_init_cam(void)
diff --git a/arch/arm/mach-imx/mach-mx35_3ds.c b/arch/arm/mach-imx/mach-mx35_3ds.c
index 7e315f0..fe9c9d5 100644
--- a/arch/arm/mach-imx/mach-mx35_3ds.c
+++ b/arch/arm/mach-imx/mach-mx35_3ds.c
@@ -255,7 +255,7 @@ static const iomux_v3_cfg_t mx35pdk_pads[] __initconst = {
/*
* Camera support
*/
-static phys_addr_t mx3_camera_base __initdata;
+static phys_addr_t mx3_camera_base __initbss;
#define MX35_3DS_CAMERA_BUF_SIZE SZ_8M
static const struct mx3_camera_pdata mx35_3ds_camera_pdata __initconst = {
@@ -531,7 +531,7 @@ static const struct mxc_usbh_platform_data usb_host_pdata __initconst = {
.portsc = MXC_EHCI_MODE_SERIAL,
};
-static bool otg_mode_host __initdata;
+static bool otg_mode_host __initbss;
static int __init mx35_3ds_otg_mode(char *options)
{
diff --git a/arch/arm/mach-imx/mach-pca100.c b/arch/arm/mach-imx/mach-pca100.c
index 2d1c50b..2174705 100644
--- a/arch/arm/mach-imx/mach-pca100.c
+++ b/arch/arm/mach-imx/mach-pca100.c
@@ -297,7 +297,7 @@ static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
.phy_mode = FSL_USB2_PHY_ULPI,
};
-static bool otg_mode_host __initdata;
+static bool otg_mode_host __initbss;
static int __init pca100_otg_mode(char *options)
{
diff --git a/arch/arm/mach-imx/mach-pcm037.c b/arch/arm/mach-imx/mach-pcm037.c
index 6d87941..01b30fb 100644
--- a/arch/arm/mach-imx/mach-pcm037.c
+++ b/arch/arm/mach-imx/mach-pcm037.c
@@ -408,7 +408,7 @@ struct mx3_camera_pdata camera_pdata __initdata = {
.mclk_10khz = 2000,
};
-static phys_addr_t mx3_camera_base __initdata;
+static phys_addr_t mx3_camera_base __initbss;
#define MX3_CAMERA_BUF_SIZE SZ_4M
static int __init pcm037_init_camera(void)
@@ -551,7 +551,7 @@ static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
.phy_mode = FSL_USB2_PHY_ULPI,
};
-static bool otg_mode_host __initdata;
+static bool otg_mode_host __initbss;
static int __init pcm037_otg_mode(char *options)
{
diff --git a/arch/arm/mach-imx/mach-pcm043.c b/arch/arm/mach-imx/mach-pcm043.c
index e447e59..cf17683 100644
--- a/arch/arm/mach-imx/mach-pcm043.c
+++ b/arch/arm/mach-imx/mach-pcm043.c
@@ -326,7 +326,7 @@ static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
.phy_mode = FSL_USB2_PHY_UTMI,
};
-static bool otg_mode_host __initdata;
+static bool otg_mode_host __initbss;
static int __init pcm043_otg_mode(char *options)
{
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 5fb50fe..639de16 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -103,7 +103,7 @@ static void omap_uart_enable_wakeup(struct device *dev, bool enable)
#define OMAP_UART_DEFAULT_PAD_NAME_LEN 28
static char rx_pad_name[OMAP_UART_DEFAULT_PAD_NAME_LEN],
- tx_pad_name[OMAP_UART_DEFAULT_PAD_NAME_LEN] __initdata;
+ tx_pad_name[OMAP_UART_DEFAULT_PAD_NAME_LEN] __initbss;
static void __init
omap_serial_fill_uart_tx_rx_pads(struct omap_board_data *bdata,
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index bef4183..287dcb9 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -356,7 +356,7 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
/* Clocksource code */
static struct omap_dm_timer clksrc;
-static bool use_gptimer_clksrc __initdata;
+static bool use_gptimer_clksrc __initbss;
/*
* clocksource
diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c
index b02f394..ef06040 100644
--- a/arch/arm/mach-orion5x/pci.c
+++ b/arch/arm/mach-orion5x/pci.c
@@ -526,7 +526,7 @@ static void rc_pci_fixup(struct pci_dev *dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_ANY_ID, rc_pci_fixup);
-static int orion5x_pci_disabled __initdata;
+static int orion5x_pci_disabled __initbss;
void __init orion5x_pci_disable(void)
{
diff --git a/arch/arm/mach-sa1100/badge4.c b/arch/arm/mach-sa1100/badge4.c
index 63361b6..98b8f63 100644
--- a/arch/arm/mach-sa1100/badge4.c
+++ b/arch/arm/mach-sa1100/badge4.c
@@ -161,7 +161,7 @@ static struct flash_platform_data badge4_flash_data = {
static struct resource badge4_flash_resource =
DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
-static int five_v_on __initdata = 0;
+static int five_v_on __initbss;
static int __init five_v_on_setup(char *ignore)
{
diff --git a/arch/arm/mach-shmobile/pm-rmobile.c b/arch/arm/mach-shmobile/pm-rmobile.c
index 89068c8..7d66150 100644
--- a/arch/arm/mach-shmobile/pm-rmobile.c
+++ b/arch/arm/mach-shmobile/pm-rmobile.c
@@ -170,9 +170,9 @@ enum pd_types {
static struct special_pd {
struct device_node *pd;
enum pd_types type;
-} special_pds[MAX_NUM_SPECIAL_PDS] __initdata;
+} special_pds[MAX_NUM_SPECIAL_PDS] __initbss;
-static unsigned int num_special_pds __initdata;
+static unsigned int num_special_pds __initbss;
static const struct of_device_id special_ids[] __initconst = {
{ .compatible = "arm,coresight-etm3x", .data = (void *)PD_DEBUG },
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index e62400e..9aa00dc 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -400,9 +400,9 @@ struct dma_contig_early_reserve {
unsigned long size;
};
-static struct dma_contig_early_reserve dma_mmu_remap[MAX_CMA_AREAS] __initdata;
+static struct dma_contig_early_reserve dma_mmu_remap[MAX_CMA_AREAS] __initbss;
-static int dma_mmu_remap_num __initdata;
+static int dma_mmu_remap_num __initbss;
void __init dma_contiguous_early_fixup(phys_addr_t base, unsigned long size)
{
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 50b881e..71c199c 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -46,8 +46,8 @@ unsigned long __init __clear_cr(unsigned long mask)
}
#endif
-static phys_addr_t phys_initrd_start __initdata = 0;
-static unsigned long phys_initrd_size __initdata = 0;
+static phys_addr_t phys_initrd_start __initbss;
+static unsigned long phys_initrd_size __initbss;
static int __init early_initrd(char *p)
{
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index f65a6f3..6e6ebc0 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -62,7 +62,7 @@ pmdval_t user_pmd_table = _PAGE_USER_TABLE;
#define CPOLICY_WRITEALLOC 4
static unsigned int cachepolicy __initdata = CPOLICY_WRITEBACK;
-static unsigned int ecc_mask __initdata = 0;
+static unsigned int ecc_mask __initbss;
pgprot_t pgprot_user;
pgprot_t pgprot_kernel;
pgprot_t pgprot_hyp_device;
@@ -121,7 +121,7 @@ static struct cachepolicy cache_policies[] __initdata = {
};
#ifdef CONFIG_CPU_CP15
-static unsigned long initial_pmd_value __initdata = 0;
+static unsigned long initial_pmd_value __initbss;
/*
* Initialise the cache_policy variable with the initial state specified
@@ -360,7 +360,7 @@ EXPORT_SYMBOL(get_mem_type);
static pte_t *(*pte_offset_fixmap)(pmd_t *dir, unsigned long addr);
static pte_t bm_pte[PTRS_PER_PTE + PTE_HWTABLE_PTRS]
- __aligned(PTE_HWTABLE_OFF + PTE_HWTABLE_SIZE) __initdata;
+ __aligned(PTE_HWTABLE_OFF + PTE_HWTABLE_SIZE) __initbss;
static pte_t * __init pte_offset_early_fixmap(pmd_t *dir, unsigned long addr)
{
@@ -1105,7 +1105,7 @@ static int __init early_vmalloc(char *arg)
}
early_param("vmalloc", early_vmalloc);
-phys_addr_t arm_lowmem_limit __initdata = 0;
+phys_addr_t arm_lowmem_limit __initbss;
void __init sanity_check_meminfo(void)
{
diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c
index 11fbbc2..0b27658 100644
--- a/arch/arm/plat-samsung/init.c
+++ b/arch/arm/plat-samsung/init.c
@@ -91,7 +91,7 @@ void __init s3c24xx_init_clocks(int xtal)
/* uart management */
#if IS_ENABLED(CONFIG_SAMSUNG_ATAGS)
-static int nr_uarts __initdata = 0;
+static int nr_uarts __initbss;
#ifdef CONFIG_SERIAL_SAMSUNG_UARTS
static struct s3c2410_uartcfg uart_cfgs[CONFIG_SERIAL_SAMSUNG_UARTS];
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 50b4769..35192b3 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -43,7 +43,7 @@ static struct vcpu_info __percpu *xen_vcpu_info;
/* These are unused until we support booting "pre-ballooned" */
unsigned long xen_released_pages;
-struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initdata;
+struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initbss;
static __read_mostly unsigned int xen_events_irq;
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index d1ce8e2..346b3f5 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -41,8 +41,8 @@ EXPORT_SYMBOL(acpi_disabled);
int acpi_pci_disabled = 1; /* skip ACPI PCI scan and IRQ initialization */
EXPORT_SYMBOL(acpi_pci_disabled);
-static bool param_acpi_off __initdata;
-static bool param_acpi_force __initdata;
+static bool param_acpi_off __initbss;
+static bool param_acpi_force __initbss;
static int __init parse_acpi(char *arg)
{
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index a48d1f4..4833871 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -50,7 +50,7 @@ static struct mm_struct efi_mm = {
.mmlist = LIST_HEAD_INIT(efi_mm.mmlist),
};
-static int uefi_debug __initdata;
+static int uefi_debug __initbss;
static int __init uefi_debug_setup(char *str)
{
uefi_debug = 1;
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 2322479..55dbdbe 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -81,7 +81,7 @@ unsigned int compat_elf_hwcap2 __read_mostly;
DECLARE_BITMAP(cpu_hwcaps, ARM64_NCAPS);
-phys_addr_t __fdt_pointer __initdata;
+phys_addr_t __fdt_pointer __initbss;
/*
* Standard memory resources
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 4910be2..3a2ca65 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -387,7 +387,7 @@ static int __init smp_cpu_setup(int cpu)
return 0;
}
-static bool bootcpu_valid __initdata;
+static bool bootcpu_valid __initbss;
static unsigned int cpu_count = 1;
#ifdef CONFIG_ACPI
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c
index 694f6de..137f6aa 100644
--- a/arch/arm64/kernel/topology.c
+++ b/arch/arm64/kernel/topology.c
@@ -99,7 +99,7 @@ static int __init parse_cluster(struct device_node *cluster, int depth)
bool leaf = true;
bool has_cores = false;
struct device_node *c;
- static int cluster_id __initdata;
+ static int cluster_id __initbss;
int core_id = 0;
int i, ret;
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index f5c0680..54a40f5 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -358,7 +358,7 @@ void free_initmem(void)
#ifdef CONFIG_BLK_DEV_INITRD
-static int keep_initrd __initdata;
+static int keep_initrd __initbss;
void __init free_initrd_mem(unsigned long start, unsigned long end)
{
diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c
index afeae89..e460859 100644
--- a/arch/avr32/boards/atngw100/setup.c
+++ b/arch/avr32/boards/atngw100/setup.c
@@ -104,7 +104,7 @@ static struct atmel_nand_data atngw100mkii_nand_data __initdata = {
#endif
/* Initialized by bootloader-specific startup code. */
-struct tag *bootloader_tags __initdata;
+struct tag *bootloader_tags __initbss;
struct eth_addr {
u8 addr[6];
diff --git a/arch/avr32/boards/atstk1000/setup.c b/arch/avr32/boards/atstk1000/setup.c
index b6b88f5..a628438 100644
--- a/arch/avr32/boards/atstk1000/setup.c
+++ b/arch/avr32/boards/atstk1000/setup.c
@@ -25,7 +25,7 @@
#include "atstk1000.h"
/* Initialized by bootloader-specific startup code. */
-struct tag *bootloader_tags __initdata;
+struct tag *bootloader_tags __initbss;
static struct fb_videomode __initdata ltv350qv_modes[] = {
{
diff --git a/arch/avr32/boards/favr-32/setup.c b/arch/avr32/boards/favr-32/setup.c
index 234cb07..fcc2392 100644
--- a/arch/avr32/boards/favr-32/setup.c
+++ b/arch/avr32/boards/favr-32/setup.c
@@ -46,7 +46,7 @@ unsigned long at32_board_osc_rates[3] = {
};
/* Initialized by bootloader-specific startup code. */
-struct tag *bootloader_tags __initdata;
+struct tag *bootloader_tags __initbss;
static struct atmel_abdac_pdata __initdata abdac0_data = {
};
diff --git a/arch/avr32/boards/hammerhead/setup.c b/arch/avr32/boards/hammerhead/setup.c
index dc0e317..69d6ca5 100644
--- a/arch/avr32/boards/hammerhead/setup.c
+++ b/arch/avr32/boards/hammerhead/setup.c
@@ -42,7 +42,7 @@ unsigned long at32_board_osc_rates[3] = {
};
/* Initialized by bootloader-specific startup code. */
-struct tag *bootloader_tags __initdata;
+struct tag *bootloader_tags __initbss;
#ifdef CONFIG_BOARD_HAMMERHEAD_LCD
static struct fb_videomode __initdata hda350tlv_modes[] = {
diff --git a/arch/avr32/boards/merisc/setup.c b/arch/avr32/boards/merisc/setup.c
index 83d896c..bd1d5cb 100644
--- a/arch/avr32/boards/merisc/setup.c
+++ b/arch/avr32/boards/merisc/setup.c
@@ -40,7 +40,7 @@
static int merisc_board_id;
/* Initialized by bootloader-specific startup code. */
-struct tag *bootloader_tags __initdata;
+struct tag *bootloader_tags __initbss;
/* Oscillator frequencies. These are board specific */
unsigned long at32_board_osc_rates[3] = {
diff --git a/arch/avr32/boards/mimc200/setup.c b/arch/avr32/boards/mimc200/setup.c
index 1cb8e9c..22d128b 100644
--- a/arch/avr32/boards/mimc200/setup.c
+++ b/arch/avr32/boards/mimc200/setup.c
@@ -41,7 +41,7 @@ unsigned long at32_board_osc_rates[3] = {
};
/* Initialized by bootloader-specific startup code. */
-struct tag *bootloader_tags __initdata;
+struct tag *bootloader_tags __initbss;
static struct fb_videomode __initdata pt0434827_modes[] = {
{
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index ad82468..e2ff203 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -74,17 +74,17 @@ static struct bfin_memmap {
unsigned long long size;
unsigned long type;
} map[BFIN_MEMMAP_MAX];
-} bfin_memmap __initdata;
+} bfin_memmap __initbss;
/* for memmap sanitization */
struct change_member {
struct bfin_memmap_entry *pentry; /* pointer to original entry */
unsigned long long addr; /* address for this change point */
};
-static struct change_member change_point_list[2*BFIN_MEMMAP_MAX] __initdata;
-static struct change_member *change_point[2*BFIN_MEMMAP_MAX] __initdata;
-static struct bfin_memmap_entry *overlap_list[BFIN_MEMMAP_MAX] __initdata;
-static struct bfin_memmap_entry new_map[BFIN_MEMMAP_MAX] __initdata;
+static struct change_member change_point_list[2*BFIN_MEMMAP_MAX] __initbss;
+static struct change_member *change_point[2*BFIN_MEMMAP_MAX] __initbss;
+static struct bfin_memmap_entry *overlap_list[BFIN_MEMMAP_MAX] __initbss;
+static struct bfin_memmap_entry new_map[BFIN_MEMMAP_MAX] __initbss;
DEFINE_PER_CPU(struct blackfin_cpudata, cpu_data);
diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c
index 72e17f7..c4cab3e 100644
--- a/arch/c6x/kernel/setup.c
+++ b/arch/c6x/kernel/setup.c
@@ -69,8 +69,8 @@ unsigned long ram_start;
unsigned long ram_end;
/* Uncached memory for DMA consistent use (memdma=) */
-static unsigned long dma_start __initdata;
-static unsigned long dma_size __initdata;
+static unsigned long dma_start __initbss;
+static unsigned long dma_size __initbss;
struct cpuinfo_c6x {
const char *cpu_name;
@@ -214,7 +214,7 @@ static void __init get_cpuinfo(void)
/*
* Early parsing of the command line
*/
-static u32 mem_size __initdata;
+static u32 mem_size __initbss;
/* "mem=" parsing. */
static int __init early_mem(char *p)
@@ -247,7 +247,7 @@ early_param("memdma", early_memdma);
int __init c6x_add_memory(phys_addr_t start, unsigned long size)
{
- static int ram_found __initdata;
+ static int ram_found __initbss;
/* We only handle one bank (the one with PAGE_OFFSET) for now */
if (ram_found)
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index efa3f0a..2c8d548 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -172,8 +172,8 @@ void __init __acpi_unmap_table(char *map, unsigned long size)
Boot-time Table Parsing
-------------------------------------------------------------------------- */
-static int available_cpus __initdata;
-struct acpi_table_madt *acpi_madt __initdata;
+static int available_cpus __initbss;
+struct acpi_table_madt *acpi_madt __initbss;
static u8 has_8259;
static int __init
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 2889412..2a47003 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -167,7 +167,7 @@ static int cpe_poll_enabled = 1;
extern void salinfo_log_wakeup(int type, u8 *buffer, u64 size, int irqsafe);
-static int mca_init __initdata;
+static int mca_init __initbss;
/*
* limited & delayed printing support for MCA/INIT handler
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 4f118b0..19de3a7 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -130,8 +130,8 @@ EXPORT_SYMBOL(ia64_max_iommu_merge_mask);
/*
* We use a special marker for the end of memory and it uses the extra (+1) slot
*/
-struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata;
-int num_rsvd_regions __initdata;
+struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initbss;
+int num_rsvd_regions __initbss;
/*
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 0e76fad..a1baa1c 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -128,7 +128,7 @@ EXPORT_SYMBOL(ia64_cpu_to_sapicid);
static cpumask_t cpu_callin_map;
-struct smp_boot_data smp_boot_data __initdata;
+struct smp_boot_data smp_boot_data __initbss;
unsigned long ap_wakeup_vector = -1; /* External Int use to wakeup APs */
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 8786268..6aba1f7 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -44,8 +44,8 @@ struct early_node_data {
unsigned long max_pfn;
};
-static struct early_node_data mem_data[MAX_NUMNODES] __initdata;
-static nodemask_t memory_less_mask __initdata;
+static struct early_node_data mem_data[MAX_NUMNODES] __initbss;
+static nodemask_t memory_less_mask __initbss;
pg_data_t *pgdat_list[MAX_NUMNODES];
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 1841ef6..5ab0a85 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -591,7 +591,7 @@ find_max_min_low_pfn (u64 start, u64 end, void *arg)
* purposes.
*/
-static int nolwsys __initdata;
+static int nolwsys __initbss;
static int __init
nolwsys_setup (char *s)
diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c
index 0392112..410ff43 100644
--- a/arch/m32r/kernel/setup.c
+++ b/arch/m32r/kernel/setup.c
@@ -377,7 +377,7 @@ const struct seq_operations cpuinfo_op = {
};
#endif /* CONFIG_PROC_FS */
-unsigned long cpu_initialized __initdata = 0;
+unsigned long cpu_initialized __initbss;
/*
* cpu_init() initializes state that is per-CPU. Some data is already
diff --git a/arch/m68k/kernel/bootinfo_proc.c b/arch/m68k/kernel/bootinfo_proc.c
index 2a33a96..2af8764 100644
--- a/arch/m68k/kernel/bootinfo_proc.c
+++ b/arch/m68k/kernel/bootinfo_proc.c
@@ -13,7 +13,7 @@
#include <asm/byteorder.h>
-static char bootinfo_tmp[1536] __initdata;
+static char bootinfo_tmp[1536] __initbss;
static void *bootinfo_copy;
static size_t bootinfo_size;
diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index 5b8ec4d..ca54c9e 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -75,9 +75,9 @@ unsigned long m68k_memoffset;
struct m68k_mem_info m68k_memory[NUM_MEMINFO];
EXPORT_SYMBOL(m68k_memory);
-static struct m68k_mem_info m68k_ramdisk __initdata;
+static struct m68k_mem_info m68k_ramdisk __initbss;
-static char m68k_command_line[CL_SIZE] __initdata;
+static char m68k_command_line[CL_SIZE] __initbss;
void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
/* machine dependent irq functions */
diff --git a/arch/metag/kernel/setup.c b/arch/metag/kernel/setup.c
index 31cf53d..b7cf313 100644
--- a/arch/metag/kernel/setup.c
+++ b/arch/metag/kernel/setup.c
@@ -110,7 +110,7 @@ extern char _heap_start[];
extern struct console dash_console;
#endif
-const struct machine_desc *machine_desc __initdata;
+const struct machine_desc *machine_desc __initbss;
/*
* Map a Linux CPU number to a hardware thread ID
diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c
index 58fca9a..7c8b9bc 100644
--- a/arch/mips/ar7/platform.c
+++ b/arch/mips/ar7/platform.c
@@ -563,7 +563,7 @@ static struct platform_device ar7_wdt = {
static int __init ar7_register_uarts(void)
{
#ifdef CONFIG_SERIAL_8250
- static struct uart_port uart_port __initdata;
+ static struct uart_port uart_port __initbss;
struct clk *bus_clk;
int res;
diff --git a/arch/mips/ath79/pci.c b/arch/mips/ath79/pci.c
index 730c0b0..5e5df1d 100644
--- a/arch/mips/ath79/pci.c
+++ b/arch/mips/ath79/pci.c
@@ -22,8 +22,8 @@
#include "pci.h"
static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
-static const struct ath79_pci_irq *ath79_pci_irq_map __initdata;
-static unsigned ath79_pci_nr_irqs __initdata;
+static const struct ath79_pci_irq *ath79_pci_irq_map __initbss;
+static unsigned ath79_pci_nr_irqs __initbss;
static const struct ath79_pci_irq ar71xx_pci_irq_map[] __initconst = {
{
diff --git a/arch/mips/bcm47xx/prom.c b/arch/mips/bcm47xx/prom.c
index 135a540..b5a8dcb 100644
--- a/arch/mips/bcm47xx/prom.c
+++ b/arch/mips/bcm47xx/prom.c
@@ -50,7 +50,7 @@ __init void bcm47xx_set_system_type(u16 chip_id)
chip_id);
}
-static unsigned long lowmem __initdata;
+static unsigned long lowmem __initbss;
static __init void prom_init_mem(void)
{
diff --git a/arch/mips/kernel/mips_machine.c b/arch/mips/kernel/mips_machine.c
index 8760975..cb81c3b 100644
--- a/arch/mips/kernel/mips_machine.c
+++ b/arch/mips/kernel/mips_machine.c
@@ -13,7 +13,7 @@
#include <asm/mips_machine.h>
#include <asm/prom.h>
-static struct mips_machine *mips_machine __initdata;
+static struct mips_machine *mips_machine __initbss;
#define for_each_machine(mach) \
for ((mach) = (struct mips_machine *)&__mips_machines_start; \
diff --git a/arch/mips/kernel/pm-cps.c b/arch/mips/kernel/pm-cps.c
index f63a289..38b4cc3 100644
--- a/arch/mips/kernel/pm-cps.c
+++ b/arch/mips/kernel/pm-cps.c
@@ -70,8 +70,8 @@ static DEFINE_PER_CPU_ALIGNED(atomic_t, pm_barrier);
DEFINE_PER_CPU_ALIGNED(struct mips_static_suspend_state, cps_cpu_state);
/* A somewhat arbitrary number of labels & relocs for uasm */
-static struct uasm_label labels[32] __initdata;
-static struct uasm_reloc relocs[32] __initdata;
+static struct uasm_label labels[32] __initbss;
+static struct uasm_reloc relocs[32] __initbss;
/* CPU dependant sync types */
static unsigned stype_intervention;
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 5b46b67..a688e3e 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -496,7 +496,7 @@ static void __init bootmem_init(void)
* initialization hook for anything else was introduced.
*/
-static int usermem __initdata;
+static int usermem __initbss;
static int __init early_parse_mem(char *p)
{
diff --git a/arch/mips/lasat/serial.c b/arch/mips/lasat/serial.c
index 2e5fbed..39c675d 100644
--- a/arch/mips/lasat/serial.c
+++ b/arch/mips/lasat/serial.c
@@ -26,7 +26,7 @@
#include <asm/lasat/lasat.h>
#include <asm/lasat/serial.h>
-static struct resource lasat_serial_res[2] __initdata;
+static struct resource lasat_serial_res[2] __initbss;
static struct plat_serial8250_port lasat_serial8250_port[] = {
{
diff --git a/arch/mips/mti-malta/malta-dtshim.c b/arch/mips/mti-malta/malta-dtshim.c
index f7133ef..72e6fea 100644
--- a/arch/mips/mti-malta/malta-dtshim.c
+++ b/arch/mips/mti-malta/malta-dtshim.c
@@ -17,7 +17,7 @@
#include <asm/fw/fw.h>
#include <asm/page.h>
-static unsigned char fdt_buf[16 << 10] __initdata;
+static unsigned char fdt_buf[16 << 10] __initbss;
/* determined physical memory size, not overridden by command line args */
extern unsigned long physical_memsize;
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index b8a0bf5..2ec3ed8 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -346,7 +346,7 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
vma->vm_end - vma->vm_start, vma->vm_page_prot);
}
-char * (*pcibios_plat_setup)(char *str) __initdata;
+char * (*pcibios_plat_setup)(char *str) __initbss;
char *__init pcibios_setup(char *str)
{
diff --git a/arch/mips/rb532/prom.c b/arch/mips/rb532/prom.c
index 657210e..3ded361 100644
--- a/arch/mips/rb532/prom.c
+++ b/arch/mips/rb532/prom.c
@@ -69,7 +69,7 @@ static inline unsigned long tag2ul(char *arg, const char *tag)
void __init prom_setup_cmdline(void)
{
- static char cmd_line[COMMAND_LINE_SIZE] __initdata;
+ static char cmd_line[COMMAND_LINE_SIZE] __initbss;
char *cp, *board;
int prom_argc;
char **prom_argv;
diff --git a/arch/mips/sgi-ip22/ip22-eisa.c b/arch/mips/sgi-ip22/ip22-eisa.c
index a0a7922..491e5ed 100644
--- a/arch/mips/sgi-ip22/ip22-eisa.c
+++ b/arch/mips/sgi-ip22/ip22-eisa.c
@@ -50,7 +50,7 @@
static char __init *decode_eisa_sig(unsigned long addr)
{
- static char sig_str[EISA_SIG_LEN] __initdata;
+ static char sig_str[EISA_SIG_LEN] __initbss;
u8 sig[4];
u16 rev;
int i;
diff --git a/arch/mips/sgi-ip22/ip22-setup.c b/arch/mips/sgi-ip22/ip22-setup.c
index c7bdfe4..dcfdd03 100644
--- a/arch/mips/sgi-ip22/ip22-setup.c
+++ b/arch/mips/sgi-ip22/ip22-setup.c
@@ -64,7 +64,7 @@ void __init plat_mem_setup(void)
cserial = ArcGetEnvironmentVariable("ConsoleOut");
if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
- static char options[8] __initdata;
+ static char options[8] __initbss;
char *baud = ArcGetEnvironmentVariable("dbaud");
if (baud)
strcpy(options, baud);
diff --git a/arch/mips/sgi-ip32/ip32-setup.c b/arch/mips/sgi-ip32/ip32-setup.c
index 3abd146..333e92a 100644
--- a/arch/mips/sgi-ip32/ip32-setup.c
+++ b/arch/mips/sgi-ip32/ip32-setup.c
@@ -90,7 +90,7 @@ void __init plat_mem_setup(void)
{
char* con = ArcGetEnvironmentVariable("console");
if (con && *con == 'd') {
- static char options[8] __initdata;
+ static char options[8] __initbss;
char *baud = ArcGetEnvironmentVariable("dbaud");
if (baud)
strcpy(options, baud);
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index efad85c..42da945 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -62,7 +62,7 @@ static void __init sni_console_setup(void)
char *cdev;
char *baud;
int port;
- static char options[8] __initdata;
+ static char options[8] __initbss;
cdev = prom_getenv("console_dev");
if (strncmp(cdev, "tty", 3) == 0) {
diff --git a/arch/mips/txx9/generic/pci.c b/arch/mips/txx9/generic/pci.c
index a77698f..05bd656 100644
--- a/arch/mips/txx9/generic/pci.c
+++ b/arch/mips/txx9/generic/pci.c
@@ -102,7 +102,7 @@ struct pci_controller txx9_primary_pcic = {
#ifdef CONFIG_64BIT
int txx9_pci_mem_high __initdata = 1;
#else
-int txx9_pci_mem_high __initdata;
+int txx9_pci_mem_high __initbss;
#endif
/*
@@ -397,7 +397,7 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
return txx9_board_vec->pci_map_irq(dev, slot, pin);
}
-char * (*txx9_board_pcibios_setup)(char *str) __initdata;
+char * (*txx9_board_pcibios_setup)(char *str) __initbss;
char *__init txx9_pcibios_setup(char *str)
{
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 9d9962a..4145140 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -78,7 +78,7 @@ unsigned int txx9_gbus_clock;
#ifdef CONFIG_CPU_TX39XX
/* don't enable by default - see errata */
-int txx9_ccfg_toeon __initdata;
+int txx9_ccfg_toeon __initbss;
#else
int txx9_ccfg_toeon __initdata = 1;
#endif
@@ -121,7 +121,7 @@ EXPORT_SYMBOL(clk_put);
#include <asm/txx9/boards.h>
#undef BOARD_VEC
-struct txx9_board_vec *txx9_board_vec __initdata;
+struct txx9_board_vec *txx9_board_vec __initbss;
static char txx9_system_type[32];
static struct txx9_board_vec *board_vecs[] __initdata = {
@@ -175,8 +175,8 @@ static void __init prom_init_cmdline(void)
}
}
-static int txx9_ic_disable __initdata;
-static int txx9_dc_disable __initdata;
+static int txx9_ic_disable __initbss;
+static int txx9_dc_disable __initbss;
#if defined(CONFIG_CPU_TX49XX)
/* flush all cache on very early stage (before 4k_cache_init) */
@@ -281,7 +281,7 @@ static inline void txx9_cache_fixup(void)
static void __init preprocess_cmdline(void)
{
- static char cmdline[COMMAND_LINE_SIZE] __initdata;
+ static char cmdline[COMMAND_LINE_SIZE] __initbss;
char *s;
strcpy(cmdline, arcs_cmdline);
diff --git a/arch/openrisc/mm/ioremap.c b/arch/openrisc/mm/ioremap.c
index 62b08ef..ae7333d 100644
--- a/arch/openrisc/mm/ioremap.c
+++ b/arch/openrisc/mm/ioremap.c
@@ -27,7 +27,7 @@
extern int mem_init_done;
-static unsigned int fixmaps_used __initdata;
+static unsigned int fixmaps_used __initbss;
/*
* Remap an arbitrary physical address space into the kernel virtual
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index c229427..b5f7b60 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -382,7 +382,7 @@ static void __init setup_bootmem(void)
static int __init parisc_text_address(unsigned long vaddr)
{
- static unsigned long head_ptr __initdata;
+ static unsigned long head_ptr __initbss;
if (!head_ptr)
head_ptr = PAGE_MASK & (unsigned long)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 15099c4..08c2c04 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -147,7 +147,7 @@ extern void copy_and_flush(unsigned long dest, unsigned long src,
/* prom structure */
static struct prom_t __initdata prom;
-static unsigned long prom_entry __initdata;
+static unsigned long prom_entry __initbss;
#define PROM_SCRATCH_SIZE 256
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 8d8a541..7afaa24 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -43,7 +43,7 @@
static int numa_enabled = 1;
-static char *cmdline __initdata;
+static char *cmdline __initbss;
static int numa_debug;
#define dbg(args...) if (numa_debug) { printk(KERN_INFO args); }
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index dbd40d4..8e180b7 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -838,7 +838,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
return 0;
}
-static unsigned int setup_possible_cpus __initdata;
+static unsigned int setup_possible_cpus __initbss;
static int __init _setup_possible_cpus(char *s)
{
diff --git a/arch/sh/drivers/pci/fixups-sdk7786.c b/arch/sh/drivers/pci/fixups-sdk7786.c
index 36eb6fc..98f4a02 100644
--- a/arch/sh/drivers/pci/fixups-sdk7786.c
+++ b/arch/sh/drivers/pci/fixups-sdk7786.c
@@ -23,7 +23,7 @@
* Misconfigurations can be detected through the FPGA via the slot
* resistors to determine card presence. Hotplug remains unsupported.
*/
-static unsigned int slot4en __initdata;
+static unsigned int slot4en __initbss;
char *__init pcibios_setup(char *str)
{
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index e22416c..768b80d 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -105,7 +105,7 @@ static void bucket_set_irq(unsigned long bucket_pa, unsigned int irq)
#define irq_work_pa(__cpu) &(trap_block[(__cpu)].irq_worklist_pa)
-static unsigned long hvirq_major __initdata;
+static unsigned long hvirq_major __initbss;
static int __init early_hvirq_major(char *p)
{
int rc = kstrtoul(p, 10, &hvirq_major);
diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index a9973bb..9d8146b 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -45,7 +45,7 @@ EXPORT_SYMBOL(nmi_active);
static unsigned int nmi_hz = HZ;
static DEFINE_PER_CPU(short, wd_enabled);
-static int endflag __initdata;
+static int endflag __initbss;
static DEFINE_PER_CPU(unsigned int, last_irq_sum);
static DEFINE_PER_CPU(long, alert_counter);
diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index 79cc0d1..5b5d6f5 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -142,7 +142,7 @@ static int __init prom_common_nextprop(phandle node, char *prev, char *buf)
return handle_nextprop_quirks(buf, name);
}
-unsigned int prom_early_allocated __initdata;
+unsigned int prom_early_allocated __initbss;
static struct of_pdt_ops prom_sparc_ops __initdata = {
.nextprop = prom_common_nextprop,
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index baef495..31e58bf 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -99,11 +99,11 @@ static void prom_sync_me(void)
local_irq_restore(flags);
}
-static unsigned int boot_flags __initdata = 0;
+static unsigned int boot_flags __initbss;
#define BOOTME_DEBUG 0x1
/* Exported for mm/init.c:paging_init. */
-unsigned long cmdline_memory_size __initdata = 0;
+unsigned long cmdline_memory_size __initbss;
/* which CPU booted us (0xff = not set) */
unsigned char boot_cpu_id = 0xff; /* 0xff will make it into DATA section... */
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 4ac88b7..9bdec47 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -1363,8 +1363,8 @@ static unsigned long __init bootmem_init(unsigned long phys_base)
return end_pfn;
}
-static struct linux_prom64_registers pall[MAX_BANKS] __initdata;
-static int pall_ents __initdata;
+static struct linux_prom64_registers pall[MAX_BANKS] __initbss;
+static int pall_ents __initbss;
static unsigned long max_phys_bits = 40;
diff --git a/arch/sparc/prom/bootstr_32.c b/arch/sparc/prom/bootstr_32.c
index d2b49d2..f35618c 100644
--- a/arch/sparc/prom/bootstr_32.c
+++ b/arch/sparc/prom/bootstr_32.c
@@ -10,7 +10,7 @@
#define BARG_LEN 256
static char barg_buf[BARG_LEN] = { 0 };
-static char fetched __initdata = 0;
+static char fetched __initbss;
char * __init
prom_getbootargs(void)
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 16630e7..9bad858 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -113,7 +113,7 @@ unsigned long end_vm;
int ncpus = 1;
/* Set in early boot */
-static int have_root __initdata = 0;
+static int have_root __initbss;
/* Set in uml_mem_setup and modified in linux_main */
long long physmem_size = 32 * 1024 * 1024;
diff --git a/arch/unicore32/kernel/setup.c b/arch/unicore32/kernel/setup.c
index 3fa317f..4464f08 100644
--- a/arch/unicore32/kernel/setup.c
+++ b/arch/unicore32/kernel/setup.c
@@ -224,7 +224,7 @@ request_standard_resources(struct meminfo *mi)
}
}
-static void (*init_machine)(void) __initdata;
+static void (*init_machine)(void) __initbss;
static int __init customize_machine(void)
{
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 5488526..168984d 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -66,11 +66,11 @@ int acpi_ioapic;
int acpi_strict;
int acpi_disable_cmcff;
-u8 acpi_sci_flags __initdata;
-int acpi_sci_override_gsi __initdata;
-int acpi_skip_timer_override __initdata;
-int acpi_use_timer_override __initdata;
-int acpi_fix_pin2_polarity __initdata;
+u8 acpi_sci_flags __initbss;
+int acpi_sci_override_gsi __initbss;
+int acpi_skip_timer_override __initbss;
+int acpi_use_timer_override __initbss;
+int acpi_fix_pin2_polarity __initbss;
#ifdef CONFIG_X86_LOCAL_APIC
static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
@@ -806,7 +806,7 @@ static int __init acpi_parse_sbf(struct acpi_table_header *table)
#ifdef CONFIG_HPET_TIMER
#include <asm/hpet.h>
-static struct resource *hpet_res __initdata;
+static struct resource *hpet_res __initbss;
static int __init acpi_parse_hpet(struct acpi_table_header *table)
{
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 6e85f71..9f45d06 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -47,11 +47,11 @@
#define GART_MAX_ADDR (1ULL << 32)
int gart_iommu_aperture;
-int gart_iommu_aperture_disabled __initdata;
-int gart_iommu_aperture_allowed __initdata;
+int gart_iommu_aperture_disabled __initbss;
+int gart_iommu_aperture_allowed __initbss;
int fallback_aper_order __initdata = 1; /* 64MB */
-int fallback_aper_force __initdata;
+int fallback_aper_force __initbss;
int fix_aperture __initdata = 1;
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 2f69e3b..7214e62 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -132,7 +132,7 @@ static inline void imcr_apic_to_pic(void)
*
* +1=force-enable
*/
-static int force_enable_local_apic __initdata;
+static int force_enable_local_apic __initbss;
/*
* APIC command line parameters
@@ -148,7 +148,7 @@ static int __init parse_lapic(char *arg)
early_param("lapic", parse_lapic);
#ifdef CONFIG_X86_64
-static int apic_calibrate_pmtmr __initdata;
+static int apic_calibrate_pmtmr __initbss;
static __init int setup_apicpmtimer(char *s)
{
apic_calibrate_pmtmr = 1;
@@ -161,7 +161,7 @@ __setup("apicpmtimer", setup_apicpmtimer);
unsigned long mp_lapic_addr;
int disable_apic;
/* Disable local APIC timer from the kernel commandline or via dmi quirk */
-static int disable_apic_timer __initdata;
+static int disable_apic_timer __initbss;
/* Local APIC timer works in C2 */
int local_apic_timer_c2_ok;
EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok);
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 5c60bb1..b8b5a69 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1598,7 +1598,7 @@ void __init setup_ioapic_ids_from_mpc(void)
}
#endif
-int no_timer_check __initdata;
+int no_timer_check __initbss;
static int __init notimercheck(char *s)
{
@@ -2009,7 +2009,7 @@ static inline void __init unlock_ExtINT_logic(void)
ioapic_write_entry(apic, pin, entry0);
}
-static int disable_timer_pin_1 __initdata;
+static int disable_timer_pin_1 __initbss;
/* Actually the next is obsolete, but keep it for paranoid reasons -AK */
static int __init disable_timer_pin_setup(char *arg)
{
diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index 7694ae6..4de57c5 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -129,7 +129,7 @@ apic_driver(apic_default);
struct apic *apic = &apic_default;
EXPORT_SYMBOL_GPL(apic);
-static int cmdline_apic __initdata;
+static int cmdline_apic __initbss;
static int __init parse_apic(char *arg)
{
struct apic **drv;
diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c
index 70d7c93..bbd1f3f 100644
--- a/arch/x86/kernel/cpu/mtrr/cleanup.c
+++ b/arch/x86/kernel/cpu/mtrr/cleanup.c
@@ -449,7 +449,7 @@ static int __init parse_mtrr_chunk_size_opt(char *p)
early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt);
/* Granularity of mtrr of block: */
-static u64 mtrr_gran_size __initdata;
+static u64 mtrr_gran_size __initbss;
static int __init parse_mtrr_gran_size_opt(char *p)
{
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 569c1e4..f8ef6e3 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -259,10 +259,10 @@ static int __init cpcompare(const void *a, const void *b)
int __init sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
u32 *pnr_map)
{
- static struct change_member change_point_list[2*E820_X_MAX] __initdata;
- static struct change_member *change_point[2*E820_X_MAX] __initdata;
- static struct e820entry *overlap_list[E820_X_MAX] __initdata;
- static struct e820entry new_bios[E820_X_MAX] __initdata;
+ static struct change_member change_point_list[2*E820_X_MAX] __initbss;
+ static struct change_member *change_point[2*E820_X_MAX] __initbss;
+ static struct e820entry *overlap_list[E820_X_MAX] __initbss;
+ static struct e820entry new_bios[E820_X_MAX] __initbss;
unsigned long current_type, last_type;
unsigned long long last_addr;
int chgidx;
@@ -807,7 +807,7 @@ static void early_panic(char *msg)
panic(msg);
}
-static int userdef __initdata;
+static int userdef __initbss;
/* "mem=nopentium" disables the 4MB page tables. */
static int __init parse_memopt(char *p)
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index be39b5f..94f5e45 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -103,7 +103,7 @@ static void __init fpu__init_system_mxcsr(void)
if (cpu_has_fxsr) {
/* Static because GCC does not get 16-byte stack alignment right: */
- static struct fxregs_state fxregs __initdata;
+ static struct fxregs_state fxregs __initbss;
asm volatile("fxsave %0" : "+m" (fxregs));
diff --git a/arch/x86/kernel/nmi_selftest.c b/arch/x86/kernel/nmi_selftest.c
index 6d9582e..d7ff617 100644
--- a/arch/x86/kernel/nmi_selftest.c
+++ b/arch/x86/kernel/nmi_selftest.c
@@ -25,7 +25,7 @@
static int __initdata nmi_fail;
/* check to see if NMI IPIs work on this machine */
-static DECLARE_BITMAP(nmi_ipi_mask, NR_CPUS) __initdata;
+static DECLARE_BITMAP(nmi_ipi_mask, NR_CPUS) __initbss;
static int __initdata testcase_total;
static int __initdata testcase_successes;
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 0497f71..6ade439 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -160,9 +160,9 @@ unsigned int specified_table_size = TCE_TABLE_SIZE_UNSPECIFIED;
static int translate_empty_slots __read_mostly = 0;
static int calgary_detected __read_mostly = 0;
-static struct rio_table_hdr *rio_table_hdr __initdata;
-static struct scal_detail *scal_devs[MAX_NUMNODES] __initdata;
-static struct rio_detail *rio_devs[MAX_NUMNODES * 4] __initdata;
+static struct rio_table_hdr *rio_table_hdr __initbss;
+static struct scal_detail *scal_devs[MAX_NUMNODES] __initbss;
+static struct rio_detail *rio_devs[MAX_NUMNODES * 4] __initbss;
struct calgary_bus_info {
void *tce_space;
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index e5a3b35..62fec24 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -21,8 +21,8 @@
#include "numa_internal.h"
int __initdata numa_off;
-nodemask_t numa_nodes_parsed __initdata;
-static nodemask_t numa_nodes_empty __initdata;
+nodemask_t numa_nodes_parsed __initbss;
+static nodemask_t numa_nodes_empty __initbss;
struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
EXPORT_SYMBOL(node_data);
diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c
index a8f90ce..2bb78bb 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -11,7 +11,7 @@
#include "numa_internal.h"
static int emu_nid_to_phys[MAX_NUMNODES];
-static char *emu_cmdline __initdata;
+static char *emu_cmdline __initbss;
void __init numa_emu_cmdline(char *str)
{
@@ -309,8 +309,8 @@ static int __init split_nodes_size_interleave(struct numa_meminfo *ei,
*/
void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
{
- static struct numa_meminfo ei __initdata;
- static struct numa_meminfo pi __initdata;
+ static struct numa_meminfo ei __initbss;
+ static struct numa_meminfo pi __initbss;
const u64 max_addr = PFN_PHYS(max_pfn);
u8 *phys_dist = NULL;
size_t phys_size = numa_dist_cnt * numa_dist_cnt * sizeof(phys_dist[0]);
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index c2aea63..74f752c 100644
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -24,7 +24,7 @@
#include <asm/apic.h>
#include <asm/uv/uv.h>
-int acpi_numa __initdata;
+int acpi_numa __initbss;
static __init int setup_node(int pxm)
{
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index f55f223..c67fcf4 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -58,8 +58,8 @@
struct efi_memory_map memmap;
-static struct efi efi_phys __initdata;
-static efi_system_table_t efi_systab __initdata;
+static struct efi efi_phys __initbss;
+static efi_system_table_t efi_systab __initbss;
static efi_config_table_type_t arch_tables[] __initdata = {
#ifdef CONFIG_X86_UV
@@ -70,7 +70,7 @@ static efi_config_table_type_t arch_tables[] __initdata = {
u64 efi_setup; /* efi setup_data physical address */
-static int add_efi_memmap __initdata;
+static int add_efi_memmap __initbss;
static int __init setup_add_efi_memmap(char *arg)
{
add_efi_memmap = 1;
diff --git a/arch/x86/platform/olpc/olpc_dt.c b/arch/x86/platform/olpc/olpc_dt.c
index d6ee929..9205980 100644
--- a/arch/x86/platform/olpc/olpc_dt.c
+++ b/arch/x86/platform/olpc/olpc_dt.c
@@ -124,7 +124,7 @@ static int __init olpc_dt_pkg2path(phandle node, char *buf,
return 0;
}
-static unsigned int prom_early_allocated __initdata;
+static unsigned int prom_early_allocated __initbss;
void * __init prom_early_alloc(unsigned long size)
{
diff --git a/arch/x86/platform/olpc/olpc_ofw.c b/arch/x86/platform/olpc/olpc_ofw.c
index e7604f6..2ac3d9f 100644
--- a/arch/x86/platform/olpc/olpc_ofw.c
+++ b/arch/x86/platform/olpc/olpc_ofw.c
@@ -11,7 +11,7 @@
static int (*olpc_ofw_cif)(int *);
/* page dir entry containing OFW's pgdir table; filled in by head_32.S */
-u32 olpc_ofw_pgd __initdata;
+u32 olpc_ofw_pgd __initbss;
static DEFINE_SPINLOCK(ofw_lock);
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 9c479fe..34ed265 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -116,7 +116,7 @@ static pud_t level3_user_vsyscall[PTRS_PER_PUD] __page_aligned_bss;
DEFINE_PER_CPU(unsigned long, xen_cr3); /* cr3 stored as physaddr */
DEFINE_PER_CPU(unsigned long, xen_current_cr3); /* actual vcpu cr3 */
-static phys_addr_t xen_pt_base, xen_pt_size __initdata;
+static phys_addr_t xen_pt_base, xen_pt_size __initbss;
/*
* Just beyond the highest usermode address. STACK_TOP_MAX has a
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 2f46c46..f88fb64 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -35,14 +35,14 @@
#define GB(x) ((uint64_t)(x) * 1024 * 1024 * 1024)
/* Amount of extra memory space we add to the e820 ranges */
-struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initdata;
+struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initbss;
/* Number of pages released from the initial allocation. */
unsigned long xen_released_pages;
/* E820 map used during setting up memory. */
-static struct e820entry xen_e820_map[E820MAX] __initdata;
-static u32 xen_e820_map_entries __initdata;
+static struct e820entry xen_e820_map[E820MAX] __initbss;
+static u32 xen_e820_map_entries __initbss;
/*
* Buffer used to remap identity mapped pages. We only need the virtual space.
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 9a9a593..881243d 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -31,7 +31,7 @@
#include <asm/sections.h>
#include <asm/sysmem.h>
-struct sysmem_info sysmem __initdata;
+struct sysmem_info sysmem __initbss;
static void __init sysmem_dump(void)
{
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 96809cd..e8c088d 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -47,7 +47,7 @@ struct acpi_blacklist_item {
u32 is_critical_error;
};
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
+static struct dmi_system_id acpi_osi_dmi_table[] __initbss;
/*
* POLICY: If *anything* doesn't work, put it on the blacklist.
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 72b6e9e..39b8aac 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -42,7 +42,7 @@ static int pxm_to_node_map[MAX_PXM_DOMAINS]
static int node_to_pxm_map[MAX_NUMNODES]
= { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
-unsigned char acpi_srat_revision __initdata;
+unsigned char acpi_srat_revision __initbss;
int pxm_to_node(int pxm)
{
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index a2ed38a..0e8cb29 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -38,9 +38,9 @@
static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" };
static char *mps_inti_flags_trigger[] = { "dfl", "edge", "res", "level" };
-static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;
+static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initbss;
-static int acpi_apic_instance __initdata;
+static int acpi_apic_instance __initbss;
/*
* Disable table checksum verification for the early stage due to the size
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index b79cb10..f08c5f0 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -123,7 +123,7 @@ struct ata_force_ent {
static struct ata_force_ent *ata_force_tbl;
static int ata_force_tbl_size;
-static char ata_force_param_buf[PAGE_SIZE] __initdata;
+static char ata_force_param_buf[PAGE_SIZE] __initbss;
/* param_buf is thrown away after initialization, disallow read */
module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0);
MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/kernel-parameters.txt for details)");
diff --git a/drivers/clk/imx/clk-imx1.c b/drivers/clk/imx/clk-imx1.c
index 99cf802..70ac020 100644
--- a/drivers/clk/imx/clk-imx1.c
+++ b/drivers/clk/imx/clk-imx1.c
@@ -38,7 +38,7 @@ static const char *clko_sel_clks[] = { "per1", "hclk", "clk48m", "clk16m",
static struct clk *clk[IMX1_CLK_MAX];
static struct clk_onecell_data clk_data;
-static void __iomem *ccm __initdata;
+static void __iomem *ccm __initbss;
#define CCM_CSCR (ccm + 0x0000)
#define CCM_MPCTL0 (ccm + 0x0004)
#define CCM_SPCTL0 (ccm + 0x000c)
diff --git a/drivers/clk/imx/clk-imx21.c b/drivers/clk/imx/clk-imx21.c
index e63188e..701c67f 100644
--- a/drivers/clk/imx/clk-imx21.c
+++ b/drivers/clk/imx/clk-imx21.c
@@ -23,7 +23,7 @@
#define MX21_GPT1_BASE_ADDR 0x10003000
#define MX21_INT_GPT1 (NR_IRQS_LEGACY + 26)
-static void __iomem *ccm __initdata;
+static void __iomem *ccm __initbss;
/* Register offsets */
#define CCM_CSCR (ccm + 0x00)
diff --git a/drivers/clk/imx/clk-imx27.c b/drivers/clk/imx/clk-imx27.c
index 0d7b8df..9e4c34c 100644
--- a/drivers/clk/imx/clk-imx27.c
+++ b/drivers/clk/imx/clk-imx27.c
@@ -15,7 +15,7 @@
#define MX27_GPT1_BASE_ADDR 0x10003000
#define MX27_INT_GPT1 (NR_IRQS_LEGACY + 26)
-static void __iomem *ccm __initdata;
+static void __iomem *ccm __initbss;
/* Register offsets */
#define CCM_CSCR (ccm + 0x00)
diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c
index a634b11..987e6212 100644
--- a/drivers/clk/imx/clk.c
+++ b/drivers/clk/imx/clk.c
@@ -74,8 +74,8 @@ void imx_cscmr1_fixup(u32 *val)
return;
}
-static int imx_keep_uart_clocks __initdata;
-static struct clk ** const *imx_uart_clocks __initdata;
+static int imx_keep_uart_clocks __initbss;
+static struct clk ** const *imx_uart_clocks __initbss;
static int __init imx_keep_uart_clocks_param(char *str)
{
diff --git a/drivers/clk/mediatek/clk-mt8173.c b/drivers/clk/mediatek/clk-mt8173.c
index 227e356..305ea73 100644
--- a/drivers/clk/mediatek/clk-mt8173.c
+++ b/drivers/clk/mediatek/clk-mt8173.c
@@ -890,8 +890,8 @@ static const struct mtk_gate venclt_clks[] __initconst = {
GATE_VENCLT(CLK_VENCLT_CKE1, "venclt_cke1", "venclt_sel", 4),
};
-static struct clk_onecell_data *mt8173_top_clk_data __initdata;
-static struct clk_onecell_data *mt8173_pll_clk_data __initdata;
+static struct clk_onecell_data *mt8173_top_clk_data __initbss;
+static struct clk_onecell_data *mt8173_pll_clk_data __initbss;
static void __init mtk_clk_enable_critical(void)
{
diff --git a/drivers/clk/shmobile/clk-r8a7740.c b/drivers/clk/shmobile/clk-r8a7740.c
index 1e6b1da..e11acb2 100644
--- a/drivers/clk/shmobile/clk-r8a7740.c
+++ b/drivers/clk/shmobile/clk-r8a7740.c
@@ -59,7 +59,7 @@ static const struct clk_div_table div4_div_table[] = {
{ 13, 72 }, { 14, 96 }, { 0, 0 }
};
-static u32 cpg_mode __initdata;
+static u32 cpg_mode __initbss;
static struct clk * __init
r8a7740_cpg_register_clock(struct device_node *np, struct r8a7740_cpg *cpg,
diff --git a/drivers/clk/shmobile/clk-r8a7778.c b/drivers/clk/shmobile/clk-r8a7778.c
index 87c1d2f..cd7fa09 100644
--- a/drivers/clk/shmobile/clk-r8a7778.c
+++ b/drivers/clk/shmobile/clk-r8a7778.c
@@ -45,8 +45,8 @@ struct {
{ "s1", { 8, 6, 8, 6 } },
};
-static u32 cpg_mode_rates __initdata;
-static u32 cpg_mode_divs __initdata;
+static u32 cpg_mode_rates __initbss;
+static u32 cpg_mode_divs __initbss;
static struct clk * __init
r8a7778_cpg_register_clock(struct device_node *np, struct r8a7778_cpg *cpg,
diff --git a/drivers/clk/shmobile/clk-r8a7779.c b/drivers/clk/shmobile/clk-r8a7779.c
index 92275c5f..22e3b67 100644
--- a/drivers/clk/shmobile/clk-r8a7779.c
+++ b/drivers/clk/shmobile/clk-r8a7779.c
@@ -88,7 +88,7 @@ static const unsigned int cpg_plla_mult[4] __initconst = { 42, 48, 56, 64 };
* Initialization
*/
-static u32 cpg_mode __initdata;
+static u32 cpg_mode __initbss;
static struct clk * __init
r8a7779_cpg_register_clock(struct device_node *np, struct r8a7779_cpg *cpg,
diff --git a/drivers/clk/shmobile/clk-rcar-gen2.c b/drivers/clk/shmobile/clk-rcar-gen2.c
index 745496f..6abd23c 100644
--- a/drivers/clk/shmobile/clk-rcar-gen2.c
+++ b/drivers/clk/shmobile/clk-rcar-gen2.c
@@ -295,7 +295,7 @@ static const struct clk_div_table cpg_sd01_div_table[] = {
* Initialization
*/
-static u32 cpg_mode __initdata;
+static u32 cpg_mode __initbss;
static struct clk * __init
rcar_gen2_cpg_register_clock(struct device_node *np, struct rcar_gen2_cpg *cpg,
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index c64d543..58261c9 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -42,7 +42,7 @@
#define ARCH_CP15_TIMER BIT(0)
#define ARCH_MEM_TIMER BIT(1)
-static unsigned arch_timers_present __initdata;
+static unsigned arch_timers_present __initbss;
static void __iomem *arch_counter_base;
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index ac1ce4a..a9f8e3b 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -20,7 +20,7 @@ EXPORT_SYMBOL_GPL(dmi_kobj);
*/
static const char dmi_empty_string[] = " ";
-static u32 dmi_ver __initdata;
+static u32 dmi_ver __initbss;
static u32 dmi_len;
static u16 dmi_num;
static u8 smbios_entry_point[32];
@@ -32,7 +32,7 @@ static int smbios_entry_point_size;
static int dmi_initialized;
/* DMI system identification string used during boot */
-static char dmi_ids_string[128] __initdata;
+static char dmi_ids_string[128] __initbss;
static struct dmi_memdev_info {
const char *device;
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index cd74a09..1d0ec51 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -1491,4 +1491,4 @@ int drm_mode_convert_umode(struct drm_display_mode *out,
out:
return ret;
-}
\ No newline at end of file
+}
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index db91de5..c3ca199 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -685,8 +685,8 @@ static int __init i8042_check_mux(void)
/*
* The following is used to test AUX IRQ delivery.
*/
-static struct completion i8042_aux_irq_delivered __initdata;
-static bool i8042_irq_being_tested __initdata;
+static struct completion i8042_aux_irq_delivered __initbss;
+static bool i8042_irq_being_tested __initbss;
static irqreturn_t __init i8042_aux_test_irq(int irq, void *dev_id)
{
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 2518c55..bf1a380 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1100,7 +1100,7 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
}
#ifdef CONFIG_OF
-static int gic_cnt __initdata;
+static int gic_cnt __initbss;
static bool gic_check_eoimode(struct device_node *node, void __iomem **base)
{
@@ -1195,7 +1195,7 @@ IRQCHIP_DECLARE(pl390, "arm,pl390", gic_of_init);
#endif
#ifdef CONFIG_ACPI
-static phys_addr_t cpu_phy_base __initdata;
+static phys_addr_t cpu_phy_base __initbss;
static int __init
gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index ebf46ad..a65bfb7 100644
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -75,10 +75,10 @@ struct ubiblock_pdu {
};
/* Numbers of elements set in the @ubiblock_param array */
-static int ubiblock_devs __initdata;
+static int ubiblock_devs __initbss;
/* MTD devices specification parameters */
-static struct ubiblock_param ubiblock_param[UBIBLOCK_MAX_DEVICES] __initdata;
+static struct ubiblock_param ubiblock_param[UBIBLOCK_MAX_DEVICES] __initbss;
struct ubiblock {
struct ubi_volume_desc *desc;
diff --git a/drivers/net/arcnet/com90xx.c b/drivers/net/arcnet/com90xx.c
index 0d9b45f..9e0ab87 100644
--- a/drivers/net/arcnet/com90xx.c
+++ b/drivers/net/arcnet/com90xx.c
@@ -79,7 +79,7 @@ static int numcards;
#define BUFFER_SIZE (512)
#define MIRROR_SIZE (BUFFER_SIZE * 4)
-static int com90xx_skip_probe __initdata = 0;
+static int com90xx_skip_probe __initbss;
/* Module parameters */
diff --git a/drivers/net/wan/sbni.c b/drivers/net/wan/sbni.c
index 8fef8d8..2b0a8a0 100644
--- a/drivers/net/wan/sbni.c
+++ b/drivers/net/wan/sbni.c
@@ -153,8 +153,8 @@ static const char version[] =
"Granch SBNI12 driver ver 5.0.1 Jun 22 2001 Denis I.Timofeev.\n";
static bool skip_pci_probe __initdata = false;
-static int scandone __initdata = 0;
-static int num __initdata = 0;
+static int scandone __initbss;
+static int num __initbss;
static unsigned char rxl_tab[];
static u32 crc32tab[];
@@ -165,11 +165,11 @@ static struct net_device *sbni_cards[ SBNI_MAX_NUM_CARDS ];
/* Lists of device's parameters */
static u32 io[ SBNI_MAX_NUM_CARDS ] __initdata =
{ [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
-static u32 irq[ SBNI_MAX_NUM_CARDS ] __initdata;
-static u32 baud[ SBNI_MAX_NUM_CARDS ] __initdata;
+static u32 irq[ SBNI_MAX_NUM_CARDS ] __initbss;
+static u32 baud[ SBNI_MAX_NUM_CARDS ] __initbss;
static u32 rxl[ SBNI_MAX_NUM_CARDS ] __initdata =
{ [0 ... SBNI_MAX_NUM_CARDS-1] = -1 };
-static u32 mac[ SBNI_MAX_NUM_CARDS ] __initdata;
+static u32 mac[ SBNI_MAX_NUM_CARDS ] __initbss;
#ifndef MODULE
typedef u32 iarr[];
diff --git a/drivers/of/pdt.c b/drivers/of/pdt.c
index d2acae8..fd57c97 100644
--- a/drivers/of/pdt.c
+++ b/drivers/of/pdt.c
@@ -23,12 +23,12 @@
#include <linux/of.h>
#include <linux/of_pdt.h>
-static struct of_pdt_ops *of_pdt_prom_ops __initdata;
+static struct of_pdt_ops *of_pdt_prom_ops __initbss;
void __initdata (*of_pdt_build_more)(struct device_node *dp);
#if defined(CONFIG_SPARC)
-unsigned int of_pdt_unique_id __initdata;
+unsigned int of_pdt_unique_id __initbss;
#define of_pdt_incr_unique_id(p) do { \
(p)->unique_id = of_pdt_unique_id++; \
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index 78530d1..95517df 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -3220,7 +3220,7 @@ static int __init parse_parport_params(void)
#else
-static int parport_setup_ptr __initdata;
+static int parport_setup_ptr __initbss;
/*
* Acceptable parameters:
diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c
index 886fb35..44e7d28 100644
--- a/drivers/pci/pci-stub.c
+++ b/drivers/pci/pci-stub.c
@@ -19,7 +19,7 @@
#include <linux/module.h>
#include <linux/pci.h>
-static char ids[1024] __initdata;
+static char ids[1024] __initbss;
module_param_string(ids, ids, sizeof(ids), 0);
MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the stub driver, format is "
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index d773b9d..ece34cb 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -793,7 +793,7 @@ static acpi_status __init AMW0_find_mailled(void)
return AE_OK;
}
-static int AMW0_set_cap_acpi_check_device_found __initdata;
+static int AMW0_set_cap_acpi_check_device_found __initbss;
static acpi_status __init AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
u32 level, void *context, void **retval)
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 9113876..4e951cd 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -309,7 +309,7 @@ static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle,
return AE_OK;
}
-int pnpacpi_disabled __initdata;
+int pnpacpi_disabled __initbss;
static int __init pnpacpi_init(void)
{
if (acpi_disabled || pnpacpi_disabled) {
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index 7bc6df3..d58607f 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -48,7 +48,7 @@ struct read_info_sccb {
u8 _pad_122[4096 - 122]; /* 122-4095 */
} __packed __aligned(PAGE_SIZE);
-static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata;
+static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initbss;
static struct sclp_ipl_info sclp_ipl_info;
struct sclp_info sclp;
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index a777e5c..a62e9dc 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -534,7 +534,7 @@ static void NCR5380_set_timer(struct NCR5380_hostdata *hostdata, unsigned long t
}
-static int probe_irq __initdata = 0;
+static int probe_irq __initbss;
/**
* probe_intr - helper for IRQ autoprobe
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 71e1380..22bcf0b 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -329,7 +329,7 @@ static int irq[MAXHA] __initdata =
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
/* disable driver flag */
-static int disable __initdata = 0;
+static int disable __initbss;
/* reserve flag */
static int reserve_mode = 1;
/* reserve list */
diff --git a/drivers/soc/tegra/fuse/speedo-tegra30.c b/drivers/soc/tegra/fuse/speedo-tegra30.c
index 9b010b3..5c57325 100644
--- a/drivers/soc/tegra/fuse/speedo-tegra30.c
+++ b/drivers/soc/tegra/fuse/speedo-tegra30.c
@@ -84,7 +84,7 @@ static const u32 __initconst cpu_process_speedos[][CPU_PROCESS_CORNERS] = {
{295, 336, 358, 375, 391, UINT_MAX},
};
-static int threshold_index __initdata;
+static int threshold_index __initbss;
static void __init fuse_speedo_calib(u32 *speedo_g, u32 *speedo_lp)
{
diff --git a/drivers/staging/board/board.c b/drivers/staging/board/board.c
index 3eb5eb8..fcc8cd9 100644
--- a/drivers/staging/board/board.c
+++ b/drivers/staging/board/board.c
@@ -22,8 +22,8 @@
#include "board.h"
-static struct device_node *irqc_node __initdata;
-static unsigned int irqc_base __initdata;
+static struct device_node *irqc_node __initbss;
+static unsigned int irqc_base __initbss;
static bool find_by_address(u64 base_address)
{
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 964ad57..e47b540 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -35,7 +35,7 @@
#define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>"
#define DRIVER_DESC "VFIO PCI - User Level meta-driver"
-static char ids[1024] __initdata;
+static char ids[1024] __initbss;
module_param_string(ids, ids, sizeof(ids), 0);
MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the vfio driver, format is \"vendor:device[:subvendor[:subdevice[:class[:class_mask]]]]\" and multiple comma separated entries can be specified");
diff --git a/drivers/video/fbdev/amifb.c b/drivers/video/fbdev/amifb.c
index 1d702e1..d1d5f32 100644
--- a/drivers/video/fbdev/amifb.c
+++ b/drivers/video/fbdev/amifb.c
@@ -950,10 +950,10 @@ static int round_down_bpp = 1; /* for mode probing */
static int amifb_ilbm = 0; /* interleaved or normal bitplanes */
-static u32 amifb_hfmin __initdata; /* monitor hfreq lower limit (Hz) */
-static u32 amifb_hfmax __initdata; /* monitor hfreq upper limit (Hz) */
-static u16 amifb_vfmin __initdata; /* monitor vfreq lower limit (Hz) */
-static u16 amifb_vfmax __initdata; /* monitor vfreq upper limit (Hz) */
+static u32 amifb_hfmin __initbss; /* monitor hfreq lower limit (Hz) */
+static u32 amifb_hfmax __initbss; /* monitor hfreq upper limit (Hz) */
+static u16 amifb_vfmin __initbss; /* monitor vfreq lower limit (Hz) */
+static u16 amifb_vfmax __initbss; /* monitor vfreq upper limit (Hz) */
/*
diff --git a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
index 8b6f6d5..387208c 100644
--- a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
+++ b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
@@ -30,7 +30,7 @@
#include <linux/slab.h>
#include <linux/list.h>
-static struct list_head dss_conv_list __initdata;
+static struct list_head dss_conv_list __initbss;
static const char prefix[] __initconst = "omapdss,";
diff --git a/drivers/video/fbdev/stifb.c b/drivers/video/fbdev/stifb.c
index 7df4228..1757027 100644
--- a/drivers/video/fbdev/stifb.c
+++ b/drivers/video/fbdev/stifb.c
@@ -1345,7 +1345,7 @@ out_err0:
return -ENXIO;
}
-static int stifb_disabled __initdata;
+static int stifb_disabled __initbss;
int __init
stifb_setup(char *options);
diff --git a/drivers/video/fbdev/vfb.c b/drivers/video/fbdev/vfb.c
index b9c2f81..3bc813a 100644
--- a/drivers/video/fbdev/vfb.c
+++ b/drivers/video/fbdev/vfb.c
@@ -117,7 +117,7 @@ static struct fb_fix_screeninfo vfb_fix = {
.accel = FB_ACCEL_NONE,
};
-static bool vfb_enable __initdata = 0; /* disabled by default */
+static bool vfb_enable __initbss; /* disabled by default */
module_param(vfb_enable, bool, 0);
static int vfb_check_var(struct fb_var_screeninfo *var,
diff --git a/drivers/watchdog/octeon-wdt-main.c b/drivers/watchdog/octeon-wdt-main.c
index 14521c8..7d32fbe 100644
--- a/drivers/watchdog/octeon-wdt-main.c
+++ b/drivers/watchdog/octeon-wdt-main.c
@@ -105,10 +105,10 @@ MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
-static u32 nmi_stage1_insns[64] __initdata;
+static u32 nmi_stage1_insns[64] __initbss;
/* We need one branch and therefore one relocation per target label. */
-static struct uasm_label labels[5] __initdata;
-static struct uasm_reloc relocs[5] __initdata;
+static struct uasm_label labels[5] __initbss;
+static struct uasm_reloc relocs[5] __initbss;
enum lable_id {
label_enter_bootloader = 1
diff --git a/drivers/xen/efi.c b/drivers/xen/efi.c
index f745db2..b18510e 100644
--- a/drivers/xen/efi.c
+++ b/drivers/xen/efi.c
@@ -261,7 +261,7 @@ static efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
return efi_data(op).status;
}
-static efi_char16_t vendor[100] __initdata;
+static efi_char16_t vendor[100] __initbss;
static efi_system_table_t efi_systab_xen __initdata = {
.hdr = {
diff --git a/drivers/zorro/zorro.c b/drivers/zorro/zorro.c
index d295d98..dcbd00c 100644
--- a/drivers/zorro/zorro.c
+++ b/drivers/zorro/zorro.c
@@ -30,7 +30,7 @@
*/
unsigned int zorro_num_autocon;
-struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
+struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initbss;
struct zorro_dev *zorro_autocon;
diff --git a/init/do_mounts.c b/init/do_mounts.c
index dea5de9..2d06ae0 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -35,11 +35,11 @@
#include "do_mounts.h"
-int __initdata rd_doload; /* 1 = load RAM disk, 0 = don't load */
+int __initbss rd_doload; /* 1 = load RAM disk, 0 = don't load */
int root_mountflags = MS_RDONLY | MS_SILENT;
-static char * __initdata root_device_name;
-static char __initdata saved_root_name[64];
+static char * __initbss root_device_name;
+static char __initbss saved_root_name[64];
static int root_wait;
dev_t ROOT_DEV;
@@ -308,21 +308,21 @@ static int __init rootwait_setup(char *str)
__setup("rootwait", rootwait_setup);
-static char * __initdata root_mount_data;
+static char * __initbss root_mount_data;
static int __init root_data_setup(char *str)
{
root_mount_data = str;
return 1;
}
-static char * __initdata root_fs_names;
+static char * __initbss root_fs_names;
static int __init fs_names_setup(char *str)
{
root_fs_names = str;
return 1;
}
-static unsigned int __initdata root_delay;
+static unsigned int __initbss root_delay;
static int __init root_delay_setup(char *str)
{
root_delay = simple_strtoul(str, NULL, 0);
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 3f46d60..8d4286b 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -21,8 +21,8 @@
#include "do_mounts.h"
unsigned long initrd_start, initrd_end;
-phys_addr_t initrd_start_phys __initdata;
-phys_addr_t initrd_end_phys __initdata;
+phys_addr_t initrd_start_phys __initbss;
+phys_addr_t initrd_end_phys __initbss;
int initrd_below_start_ok;
unsigned int real_root_dev; /* do_proc_dointvec cannot handle kdev_t */
static int __initdata mount_initrd = 1;
diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index 8cb6db5..e10c2f6 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -24,11 +24,11 @@
*/
#ifdef CONFIG_MD_AUTODETECT
-static int __initdata raid_noautodetect;
+static int __initbss raid_noautodetect;
#else
static int __initdata raid_noautodetect=1;
#endif
-static int __initdata raid_autopart;
+static int __initbss raid_autopart;
static struct {
int minor;
@@ -36,9 +36,9 @@ static struct {
int level;
int chunk;
char *device_names;
-} md_setup_args[256] __initdata;
+} md_setup_args[256] __initbss;
-static int md_setup_ents __initdata;
+static int md_setup_ents __initbss;
/*
* Parse the command-line parameters given our kernel, but do not
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index e5d059e..5b49458 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -33,7 +33,7 @@ static int __init prompt_ramdisk(char *str)
}
__setup("prompt_ramdisk=", prompt_ramdisk);
-int __initdata rd_image_start; /* starting block # of image */
+int __initbss rd_image_start; /* starting block # of image */
static int __init ramdisk_start_setup(char *str)
{
diff --git a/init/initramfs.c b/init/initramfs.c
index b32ad7d..7566c4f 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -42,7 +42,7 @@ static ssize_t __init xwrite(int fd, const char *p, size_t count)
return out;
}
-static __initdata char *message;
+static __initbss char *message;
static void __init error(char *x)
{
if (!message)
@@ -53,7 +53,7 @@ static void __init error(char *x)
#define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
-static __initdata struct hash {
+static __initbss struct hash {
int ino, minor, major;
umode_t mode;
struct hash *next;
@@ -148,16 +148,16 @@ static void __init dir_utime(void)
}
}
-static __initdata time_t mtime;
+static __initbss time_t mtime;
/* cpio header parsing */
-static __initdata unsigned long ino, major, minor, nlink;
-static __initdata umode_t mode;
-static __initdata unsigned long body_len, name_len;
-static __initdata uid_t uid;
-static __initdata gid_t gid;
-static __initdata unsigned rdev;
+static __initbss unsigned long ino, major, minor, nlink;
+static __initbss umode_t mode;
+static __initbss unsigned long body_len, name_len;
+static __initbss uid_t uid;
+static __initbss gid_t gid;
+static __initbss unsigned rdev;
static void __init parse_header(char *s)
{
@@ -185,7 +185,7 @@ static void __init parse_header(char *s)
/* FSM */
-static __initdata enum state {
+static __initbss enum state {
Start,
Collect,
GotHeader,
@@ -196,9 +196,9 @@ static __initdata enum state {
Reset
} state, next_state;
-static __initdata char *victim;
-static unsigned long byte_count __initdata;
-static __initdata loff_t this_header, next_header;
+static __initbss char *victim;
+static unsigned long byte_count __initbss;
+static __initbss loff_t this_header, next_header;
static inline void __init eat(unsigned n)
{
@@ -207,10 +207,10 @@ static inline void __init eat(unsigned n)
byte_count -= n;
}
-static __initdata char *vcollected;
-static __initdata char *collected;
-static long remains __initdata;
-static __initdata char *collect;
+static __initbss char *vcollected;
+static __initbss char *collected;
+static long remains __initbss;
+static __initbss char *collect;
static void __init read_into(char *buf, unsigned size, enum state next)
{
@@ -226,7 +226,7 @@ static void __init read_into(char *buf, unsigned size, enum state next)
}
}
-static __initdata char *header_buf, *symlink_buf, *name_buf;
+static __initbss char *header_buf, *symlink_buf, *name_buf;
static int __init do_start(void)
{
@@ -321,7 +321,7 @@ static void __init clean_path(char *path, umode_t fmode)
}
}
-static __initdata int wfd;
+static __initbss int wfd;
static int __init do_name(void)
{
@@ -451,7 +451,7 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len)
long written;
decompress_fn decompress;
const char *compress_name;
- static __initdata char msg_buf[64];
+ static __initbss char msg_buf[64];
header_buf = kmalloc(110, GFP_KERNEL);
symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL);
@@ -508,7 +508,7 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len)
return message;
}
-static int __initdata do_retain_initrd;
+static int __initbss do_retain_initrd;
static int __init retain_initrd_param(char *str)
{
diff --git a/init/main.c b/init/main.c
index 9e64d70..917936a 100644
--- a/init/main.c
+++ b/init/main.c
@@ -120,7 +120,7 @@ extern void time_init(void);
void (*__initdata late_time_init)(void);
/* Untouched command line saved by arch-specific code. */
-char __initdata boot_command_line[COMMAND_LINE_SIZE];
+char __initbss boot_command_line[COMMAND_LINE_SIZE];
/* Untouched saved command line (eg. for /proc) */
char *saved_command_line;
/* Command line for parameter parsing */
@@ -440,8 +440,8 @@ void __init parse_early_options(char *cmdline)
/* Arch code calls this early on, or if not, just before other parsing. */
void __init parse_early_param(void)
{
- static int done __initdata;
- static char tmp_cmdline[COMMAND_LINE_SIZE] __initdata;
+ static int done __initbss;
+ static char tmp_cmdline[COMMAND_LINE_SIZE] __initbss;
if (done)
return;
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 0acdbf0..aeea36d 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5124,7 +5124,7 @@ int __init cgroup_init_early(void)
return 0;
}
-static unsigned long cgroup_disable_mask __initdata;
+static unsigned long cgroup_disable_mask __initbss;
/**
* cgroup_init - cgroup initialization
diff --git a/kernel/power/suspend_test.c b/kernel/power/suspend_test.c
index 084452e..c61ddcb 100644
--- a/kernel/power/suspend_test.c
+++ b/kernel/power/suspend_test.c
@@ -143,7 +143,7 @@ static int __init has_wakealarm(struct device *dev, const void *data)
* at startup time. They're normally disabled, for faster boot and because
* we can't know which states really work on this particular system.
*/
-static const char *test_state_label __initdata;
+static const char *test_state_label __initbss;
static char warn_bad_state[] __initdata =
KERN_WARNING "PM: can't test '%s' suspend state\n";
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 3a7db65..2c29b49 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4267,11 +4267,11 @@ EXPORT_SYMBOL_GPL(ftrace_set_global_notrace);
* command line interface to allow users to set filters on boot up.
*/
#define FTRACE_FILTER_SIZE COMMAND_LINE_SIZE
-static char ftrace_notrace_buf[FTRACE_FILTER_SIZE] __initdata;
-static char ftrace_filter_buf[FTRACE_FILTER_SIZE] __initdata;
+static char ftrace_notrace_buf[FTRACE_FILTER_SIZE] __initbss;
+static char ftrace_filter_buf[FTRACE_FILTER_SIZE] __initbss;
/* Used by function selftest to not test if filter is set */
-bool ftrace_filter_param __initdata;
+bool ftrace_filter_param __initbss;
static int __init set_ftrace_notrace(char *str)
{
@@ -4290,8 +4290,8 @@ static int __init set_ftrace_filter(char *str)
__setup("ftrace_filter=", set_ftrace_filter);
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-static char ftrace_graph_buf[FTRACE_FILTER_SIZE] __initdata;
-static char ftrace_graph_notrace_buf[FTRACE_FILTER_SIZE] __initdata;
+static char ftrace_graph_buf[FTRACE_FILTER_SIZE] __initbss;
+static char ftrace_graph_notrace_buf[FTRACE_FILTER_SIZE] __initbss;
static int ftrace_set_func(unsigned long *array, int *idx, int size, char *buffer);
static unsigned long save_global_trampoline;
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index fc347f8..2f36944 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -4709,7 +4709,7 @@ static int rb_cpu_notify(struct notifier_block *self,
* ring buffer should happen that's not expected, a big warning
* is displayed and all ring buffers are disabled.
*/
-static struct task_struct *rb_threads[NR_CPUS] __initdata;
+static struct task_struct *rb_threads[NR_CPUS] __initbss;
struct rb_test_data {
struct ring_buffer *buffer;
@@ -4729,7 +4729,7 @@ struct rb_test_data {
int cnt;
};
-static struct rb_test_data rb_data[NR_CPUS] __initdata;
+static struct rb_test_data rb_data[NR_CPUS] __initbss;
/* 1 meg per cpu */
#define RB_TEST_BUFFER_SIZE 1048576
@@ -4739,7 +4739,7 @@ static char rb_string[] __initdata =
"?+|:';\",.<>/?abcdefghijklmnopqrstuvwxyz1234567890"
"!@#$%^&*()?+\\?+|:';\",.<>/?abcdefghijklmnopqrstuv";
-static bool rb_test_started __initdata;
+static bool rb_test_started __initbss;
struct rb_item {
int size;
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 78022c1..997123a 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -164,7 +164,7 @@ static union trace_enum_map_item *trace_enum_maps;
static int tracing_set_tracer(struct trace_array *tr, const char *buf);
#define MAX_TRACER_SIZE 100
-static char bootup_tracer_buf[MAX_TRACER_SIZE] __initdata;
+static char bootup_tracer_buf[MAX_TRACER_SIZE] __initbss;
static char *default_bootup_tracer;
static bool allocate_snapshot;
@@ -213,8 +213,8 @@ static int __init boot_alloc_snapshot(char *str)
__setup("alloc_snapshot", boot_alloc_snapshot);
-static char trace_boot_options_buf[MAX_TRACER_SIZE] __initdata;
-static char *trace_boot_options __initdata;
+static char trace_boot_options_buf[MAX_TRACER_SIZE] __initbss;
+static char *trace_boot_options __initbss;
static int __init set_trace_boot_options(char *str)
{
@@ -224,8 +224,8 @@ static int __init set_trace_boot_options(char *str)
}
__setup("trace_options=", set_trace_boot_options);
-static char trace_boot_clock_buf[MAX_TRACER_SIZE] __initdata;
-static char *trace_boot_clock __initdata;
+static char trace_boot_clock_buf[MAX_TRACER_SIZE] __initbss;
+static char *trace_boot_clock __initbss;
static int __init set_trace_boot_clock(char *str)
{
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 57c9e70..d74b1e2 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -2447,7 +2447,7 @@ static void __add_event_to_tracers(struct trace_event_call *call)
extern struct trace_event_call *__start_ftrace_events[];
extern struct trace_event_call *__stop_ftrace_events[];
-static char bootup_event_buf[COMMAND_LINE_SIZE] __initdata;
+static char bootup_event_buf[COMMAND_LINE_SIZE] __initbss;
static __init int setup_trace_event(char *str)
{
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index b746399..3a8e5ff 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -420,7 +420,7 @@ stack_trace_sysctl(struct ctl_table *table, int write,
return ret;
}
-static char stack_trace_filter_buf[COMMAND_LINE_SIZE+1] __initdata;
+static char stack_trace_filter_buf[COMMAND_LINE_SIZE+1] __initbss;
static __init int enable_stacktrace(char *str)
{
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 547f7f9..f091580 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -35,7 +35,7 @@ struct debug_bucket {
static struct debug_bucket obj_hash[ODEBUG_HASH_SIZE];
-static struct debug_obj obj_static_pool[ODEBUG_POOL_SIZE] __initdata;
+static struct debug_obj obj_static_pool[ODEBUG_POOL_SIZE] __initbss;
static DEFINE_RAW_SPINLOCK(pool_lock);
diff --git a/lib/list_sort.c b/lib/list_sort.c
index 3fe4010..b0d6291 100644
--- a/lib/list_sort.c
+++ b/lib/list_sort.c
@@ -169,7 +169,7 @@ struct debug_el {
};
/* Array, containing pointers to all elements in the test list */
-static struct debug_el **elts __initdata;
+static struct debug_el **elts __initbss;
static int __init check(struct debug_el *ela, struct debug_el *elb)
{
diff --git a/lib/test_printf.c b/lib/test_printf.c
index c5a666a..5f013f2 100644
--- a/lib/test_printf.c
+++ b/lib/test_printf.c
@@ -36,9 +36,9 @@
#endif
#define PTR_WIDTH_STR stringify(PTR_WIDTH)
-static unsigned total_tests __initdata;
-static unsigned failed_tests __initdata;
-static char *test_buffer __initdata;
+static unsigned total_tests __initbss;
+static unsigned failed_tests __initbss;
+static char *test_buffer __initbss;
static int __printf(4, 0) __init
do_test(int bufsize, const char *expect, int elen,
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 3b63807..4a28ed5 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -34,7 +34,7 @@ unsigned long max_low_pfn;
unsigned long min_low_pfn;
unsigned long max_pfn;
-bootmem_data_t bootmem_node_data[MAX_NUMNODES] __initdata;
+bootmem_data_t bootmem_node_data[MAX_NUMNODES] __initbss;
static struct list_head bdata_list __initdata = LIST_HEAD_INIT(bdata_list);
@@ -243,7 +243,7 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
return count;
}
-static int reset_managed_pages_done __initdata;
+static int reset_managed_pages_done __initbss;
void reset_node_managed_pages(pg_data_t *pgdat)
{
diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c
index 6d5717b..a3d4c22 100644
--- a/mm/early_ioremap.c
+++ b/mm/early_ioremap.c
@@ -18,7 +18,7 @@
#include <asm/early_ioremap.h>
#ifdef CONFIG_MMU
-static int early_ioremap_debug __initdata;
+static int early_ioremap_debug __initbss;
static int __init early_ioremap_debug_setup(char *str)
{
@@ -28,7 +28,7 @@ static int __init early_ioremap_debug_setup(char *str)
}
early_param("early_ioremap_debug", early_ioremap_debug_setup);
-static int after_paging_init __initdata;
+static int after_paging_init __initbss;
void __init __weak early_ioremap_shutdown(void)
{
@@ -60,9 +60,9 @@ static inline void __init __late_clear_fixmap(enum fixed_addresses idx)
}
#endif
-static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
-static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
-static unsigned long slot_virt[FIX_BTMAPS_SLOTS] __initdata;
+static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initbss;
+static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initbss;
+static unsigned long slot_virt[FIX_BTMAPS_SLOTS] __initbss;
void __init early_ioremap_setup(void)
{
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 19423a4..54e8729 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -268,8 +268,8 @@ struct early_log {
/* early logging buffer and current position */
static struct early_log
- early_log[CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE] __initdata;
-static int crt_early_log __initdata;
+ early_log[CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE] __initbss;
+static int crt_early_log __initbss;
static void kmemleak_disable(void);
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index e2dc337..3b1a5c0 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5728,7 +5728,7 @@ void mem_cgroup_uncharge_swap(swp_entry_t entry)
#ifdef CONFIG_MEMCG_SWAP_ENABLED
static int really_do_swap_account __initdata = 1;
#else
-static int really_do_swap_account __initdata;
+static int really_do_swap_account __initbss;
#endif
static int __init enable_swap_account(char *s)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 87a1779..c8ec038 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2508,7 +2508,7 @@ void mpol_free_shared_policy(struct shared_policy *p)
}
#ifdef CONFIG_NUMA_BALANCING
-static int __initdata numabalancing_override;
+static int __initbss numabalancing_override;
static void __init check_numabalancing_enable(void)
{
diff --git a/mm/memtest.c b/mm/memtest.c
index 8eaa4c3..4625ed0 100644
--- a/mm/memtest.c
+++ b/mm/memtest.c
@@ -80,7 +80,7 @@ static void __init do_one_pass(u64 pattern, phys_addr_t start, phys_addr_t end)
}
/* default is disabled */
-static unsigned int memtest_pattern __initdata;
+static unsigned int memtest_pattern __initbss;
static int __init parse_memtest(char *arg)
{
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index e57cf24..f61fbc4 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -156,7 +156,7 @@ static unsigned long __init free_low_memory_core_early(void)
return count;
}
-static int reset_managed_pages_done __initdata;
+static int reset_managed_pages_done __initbss;
void reset_node_managed_pages(pg_data_t *pgdat)
{
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index de82e2c..16c55b7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -248,8 +248,8 @@ static unsigned long __meminitdata dma_reserve;
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
static unsigned long __meminitdata arch_zone_lowest_possible_pfn[MAX_NR_ZONES];
static unsigned long __meminitdata arch_zone_highest_possible_pfn[MAX_NR_ZONES];
-static unsigned long __initdata required_kernelcore;
-static unsigned long __initdata required_movablecore;
+static unsigned long __initbss required_kernelcore;
+static unsigned long __initbss required_movablecore;
static unsigned long __meminitdata zone_movable_pfn[MAX_NUMNODES];
/* movable_zone is the "real" zone pages in ZONE_MOVABLE are taken from */
@@ -1112,7 +1112,7 @@ static void __init deferred_free_range(struct page *page,
}
/* Completion tracking for deferred_init_memmap() threads */
-static atomic_t pgdat_init_n_undone __initdata;
+static atomic_t pgdat_init_n_undone __initbss;
static __initdata DECLARE_COMPLETION(pgdat_init_all_done_comp);
static inline void __init pgdat_init_report_one_done(void)
diff --git a/mm/percpu.c b/mm/percpu.c
index 8a943b9..e611ccd 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1528,8 +1528,8 @@ static void pcpu_dump_alloc_info(const char *lvl,
int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
void *base_addr)
{
- static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
- static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initdata;
+ static int smap[PERCPU_DYNAMIC_EARLY_SLOTS] __initbss;
+ static int dmap[PERCPU_DYNAMIC_EARLY_SLOTS] __initbss;
size_t dyn_size = ai->dyn_size;
size_t size_sum = ai->static_size + ai->reserved_size + dyn_size;
struct pcpu_chunk *schunk, *dchunk = NULL;
@@ -1776,8 +1776,8 @@ static struct pcpu_alloc_info * __init pcpu_build_alloc_info(
size_t atom_size,
pcpu_fc_cpu_distance_fn_t cpu_distance_fn)
{
- static int group_map[NR_CPUS] __initdata;
- static int group_cnt[NR_CPUS] __initdata;
+ static int group_map[NR_CPUS] __initbss;
+ static int group_cnt[NR_CPUS] __initbss;
const size_t static_size = __per_cpu_end - __per_cpu_start;
int nr_groups = 1, nr_units = 0;
size_t size_sum, min_unit_size, alloc_size;
diff --git a/mm/slab.c b/mm/slab.c
index 767cd76..def0e6e 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -238,7 +238,7 @@ struct arraycache_init {
* Need this for bootstrapping a per node allocator.
*/
#define NUM_INIT_LISTS (2 * MAX_NUMNODES)
-static struct kmem_cache_node __initdata init_kmem_cache_node[NUM_INIT_LISTS];
+static struct kmem_cache_node __initbss init_kmem_cache_node[NUM_INIT_LISTS];
#define CACHE_CACHE 0
#define SIZE_NODE (MAX_NUMNODES)
@@ -429,7 +429,7 @@ static inline void set_obj_status(struct page *page, int idx, int val) {}
#define SLAB_MAX_ORDER_HI 1
#define SLAB_MAX_ORDER_LO 0
static int slab_max_order = SLAB_MAX_ORDER_LO;
-static bool slab_max_order_set __initdata;
+static bool slab_max_order_set __initbss;
static inline struct kmem_cache *virt_to_cache(const void *obj)
{
diff --git a/mm/slub.c b/mm/slub.c
index 0a795e9..0982ede 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3881,7 +3881,7 @@ static struct kmem_cache * __init bootstrap(struct kmem_cache *static_cache)
void __init kmem_cache_init(void)
{
- static __initdata struct kmem_cache boot_kmem_cache,
+ static __initbss struct kmem_cache boot_kmem_cache,
boot_kmem_cache_node;
if (debug_guardpage_minorder())
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 842c12c..4af41f3 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1143,7 +1143,7 @@ void *vm_map_ram(struct page **pages, unsigned int count, int node, pgprot_t pro
}
EXPORT_SYMBOL(vm_map_ram);
-static struct vm_struct *vmlist __initdata;
+static struct vm_struct *vmlist __initbss;
/**
* vm_area_add_early - add vmap area early during boot
* @vm: vm_struct to add
@@ -1184,7 +1184,7 @@ void __init vm_area_add_early(struct vm_struct *vm)
*/
void __init vm_area_register_early(struct vm_struct *vm, size_t align)
{
- static size_t vm_init_off __initdata;
+ static size_t vm_init_off __initbss;
unsigned long addr;
addr = ALIGN(VMALLOC_START + vm_init_off, align);
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index ed4ef09..3381a6c 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -113,9 +113,9 @@
* variables using firmware environment vars. If this is set, it will
* ignore such firmware variables.
*/
-int ic_set_manually __initdata = 0; /* IPconfig parameters set manually */
+int ic_set_manually __initbss; /* IPconfig parameters set manually */
-static int ic_enable __initdata; /* IP config enabled? */
+static int ic_enable __initbss; /* IP config enabled? */
/* Protocol choice */
int ic_proto_enabled __initdata = 0
@@ -130,7 +130,7 @@ int ic_proto_enabled __initdata = 0
#endif
;
-static int ic_host_name_set __initdata; /* Host name set by us? */
+static int ic_host_name_set __initbss; /* Host name set by us? */
__be32 ic_myaddr = NONE; /* My IP address */
static __be32 ic_netmask = NONE; /* Netmask for local subnet */
@@ -144,7 +144,7 @@ __be32 root_server_addr = NONE; /* Address of NFS server */
u8 root_server_path[256] = { 0, }; /* Path to mount as root */
/* vendor class identifier */
-static char vendor_class_identifier[253] __initdata;
+static char vendor_class_identifier[253] __initbss;
/* Persistent data: */
@@ -160,17 +160,17 @@ static u8 ic_domain[64]; /* DNS (not NIS) domain name */
static char user_dev_name[IFNAMSIZ] __initdata = { 0, };
/* Protocols supported by available interfaces */
-static int ic_proto_have_if __initdata;
+static int ic_proto_have_if __initbss;
/* MTU for boot device */
-static int ic_dev_mtu __initdata;
+static int ic_dev_mtu __initbss;
#ifdef IPCONFIG_DYNAMIC
static DEFINE_SPINLOCK(ic_recv_lock);
-static volatile int ic_got_reply __initdata; /* Proto(s) that replied */
+static volatile int ic_got_reply __initbss; /* Proto(s) that replied */
#endif
#ifdef IPCONFIG_DHCP
-static int ic_dhcp_msgtype __initdata; /* DHCP msg type received */
+static int ic_dhcp_msgtype __initbss; /* DHCP msg type received */
#endif
@@ -186,8 +186,8 @@ struct ic_device {
__be32 xid;
};
-static struct ic_device *ic_first_dev __initdata; /* List of open device */
-static struct net_device *ic_dev __initdata; /* Selected device */
+static struct ic_device *ic_first_dev __initbss; /* List of open device */
+static struct net_device *ic_dev __initbss; /* Selected device */
static bool __init ic_is_init_dev(struct net_device *dev)
{
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index dec607c..1dc6cf6 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -37,7 +37,7 @@
#include "include/procattr.h"
/* Flag indicating whether initialization completed */
-int apparmor_initialized __initdata;
+int apparmor_initialized __initbss;
/*
* LSM hook functions
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index 3997e20..18f82cb 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -139,7 +139,7 @@ static struct list_head *ima_rules;
static DEFINE_MUTEX(ima_rules_mutex);
-static int ima_policy __initdata;
+static int ima_policy __initbss;
static int __init default_measure_policy_setup(char *str)
{
if (ima_policy)
@@ -162,7 +162,7 @@ static int __init policy_setup(char *str)
}
__setup("ima_policy=", policy_setup);
-static bool ima_use_appraise_tcb __initdata;
+static bool ima_use_appraise_tcb __initbss;
static int __init default_appraise_policy_setup(char *str)
{
ima_use_appraise_tcb = 1;
diff --git a/sound/oss/aedsp16.c b/sound/oss/aedsp16.c
index 35b5912..2573817 100644
--- a/sound/oss/aedsp16.c
+++ b/sound/oss/aedsp16.c
@@ -409,8 +409,8 @@
#define INIT_MSS (1<<1)
#define INIT_MPU401 (1<<2)
-static int soft_cfg __initdata = 0; /* bitmapped config */
-static int soft_cfg_mss __initdata = 0; /* bitmapped mss config */
+static int soft_cfg __initbss; /* bitmapped config */
+static int soft_cfg_mss __initbss; /* bitmapped mss config */
static int ver[CARDVERDIGITS] __initdata = {0, 0}; /* DSP Ver:
hi->ver[0] lo->ver[1] */
diff --git a/sound/oss/msnd_pinnacle.c b/sound/oss/msnd_pinnacle.c
index a8bb4a0..10d420d 100644
--- a/sound/oss/msnd_pinnacle.c
+++ b/sound/oss/msnd_pinnacle.c
@@ -1630,20 +1630,20 @@ static int write_ndelay __initdata = -1;
static int cfg __initdata = -1;
/* Extra Peripheral Configuration */
-static int reset __initdata = 0;
-static int mpu_io __initdata = 0;
-static int mpu_irq __initdata = 0;
-static int ide_io0 __initdata = 0;
-static int ide_io1 __initdata = 0;
-static int ide_irq __initdata = 0;
-static int joystick_io __initdata = 0;
+static int reset __initbss;
+static int mpu_io __initbss;
+static int mpu_irq __initbss;
+static int ide_io0 __initbss;
+static int ide_io1 __initbss;
+static int ide_irq __initbss;
+static int joystick_io __initbss;
/* If we have the digital daugherboard... */
static bool digital __initdata = false;
#endif
static int fifosize __initdata = DEFFIFOSIZE;
-static int calibrate_signal __initdata = 0;
+static int calibrate_signal __initbss;
#else /* not a module */
[-- Attachment #3: Type: text/plain, Size: 706 bytes --]
build result :
yalin@ubuntu:~/linux-next$ ll ../kernel_out_arm/arch/arm/boot/*Image*
-rwxrwxr-x 1 yalin yalin 14487552 Oct 13 15:08 ../kernel_out_arm/arch/arm/boot/Image* # apply the patch
-rwxrwxr-x 1 yalin yalin 14512128 Oct 12 11:48 ../kernel_out_arm/arch/arm/boot/Image_old*
-rwxrwxr-x 1 yalin yalin 6479568 Oct 13 15:08 ../kernel_out_arm/arch/arm/boot/zImage* # apply the patch
-rwxrwxr-x 1 yalin yalin 6479664 Oct 12 17:31 ../kernel_out_arm/arch/arm/boot/zImage_old*
Image size shrink about 24576 bytes
zImage seems not change much .
it will be more useful for platform which don’t use compress Image like ARM64 / x86 platform i think.
Thanks
^ permalink raw reply related [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-13 7:33 ` yalin wang
2015-10-13 9:40 ` Arnd Bergmann
@ 2015-10-13 9:40 ` Arnd Bergmann
1 sibling, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 9:40 UTC (permalink / raw)
To: yalin wang
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
On Tuesday 13 October 2015 15:33:10 yalin wang wrote:
>
> > On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
> >
> >> --- a/include/asm-generic/vmlinux.lds.h
> >> +++ b/include/asm-generic/vmlinux.lds.h
> >>
> >> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> >> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> >
> > A few comments:
> >
> > 1) - please align the backslash at the end of the
> > line with the backslash above it.
> > 2) - you need to fix all the remaining users of BSS_SECTION.
> > 3) - do we really need the flexibility to specify an alignment (stop_align)?
> > If not - drop the extra argument.
> >
> > Sam
> i change lots of __initdata to __initbss to test it on ARM arch,
>
Ok, I found my mistake in the script I used to calculate the savings,
here is the correct output showing all uninitialized variables in
multi_v7_defconfig:
4 done.44688
1024 boot_command_line
1024 tmp_cmdline.44689
4 late_time_init
4 root_mount_data
4 root_fs_names
4 rd_doload
4 root_delay
64 saved_root_name
4 root_device_name
4 message
4 byte_count
4 victim
4 collected
8 this_header
4 state
4 collect
4 remains
4 next_state
8 header_buf
8 next_header
4 do_retain_initrd
4 name_len
4 body_len
4 gid
4 uid
4 mtime
4 wfd
4 vcollected
4 ino
4 mode
4 nlink
4 major
4 minor
4 rdev
4 symlink_buf
4 name_buf
64 msg_buf.29770
128 head
4 machine_desc
4 usermem.34390
4 __atags_pointer
1024 cmd_line
1024 default_command_line
1536 atags_copy
4 dma_mmu_remap_num
64 dma_mmu_remap
4 phys_initrd_start
4024 phys_initrd_size
4096 bm_pte
4 ecc_mask
4 initial_pmd_value
4 arm_lowmem_limit
24 s5p_mfc_mem
28 tx_pad_name
4 use_gptimer_clksrc
4 omap_table_init
4 mpurate
4 am35xx_aes_hwmod_ocp_ifs
4 am35xx_sham_hwmod_ocp_ifs
4 dra72x_hwmod_ocp_ifs
4 rx51_vibra_data
4 num_special_pds
128 special_pds
4 main_extable_sort_needed
4 new_log_buf_len
24 opts.36513
512 smap.22469
512 dmap.22470
64 group_map.22521
64 group_cnt.22522
4 pcpu_chosen_fc
4 vmlist
4 vm_init_off.26867
4 reset_managed_pages_done
116 boot_kmem_cache_node.32827
116 boot_kmem_cache.32826
4 dhash_entries
4 ihash_entries
4 mhash_entries
4 mphash_entries
256 nfs_root_parms
1028 nfs_export_path
1028 nfs_root_device
4 gic_cnt
4 threshold_index
4096 ata_force_param_buf
4 mtd_devs
2432 mtd_dev_param
8 m68k_probes
8 isa_probes
4 arch_timers_present
4 dt_root_size_cells
4 dt_root_addr_cells
4 imx_keep_uart_clocks
4 imx_uart_clocks
4 mt8173_top_clk_data
4 mt8173_pll_clk_data
4 cpg_mode
4 cpg_mode_rates
4 cpg_mode_divs
4 cpg_mode
4 cpg_mode
4 thash_entries
4 uhash_entries
4 ic_got_reply
4 ic_first_dev
4 ic_dev
16 user_dev_name
4 ic_dhcp_msgtype
4 ic_host_name_set
4 ic_dev_mtu
4 ic_set_manually
4 ic_enable
256 vendor_class_identifier
4 ic_proto_have_if
4 dma_reserve
4 nr_kernel_pages
4 nr_all_pages
196 __clk_of_table_sentinel
200 __rmem_of_table_sentinel
196 __clksrc_of_table_sentinel
200 __iommu_of_table_sentinel
8 __cpu_method_of_table_sentinel
8 __cpuidle_method_of_table_sentinel
196 irqchip_of_match_end
32 __earlycon_table_sentinel
200 __earlycon_of_table_sentinel
6 __irf_end
26398 total
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-13 7:33 ` yalin wang
2015-10-13 9:40 ` Arnd Bergmann
@ 2015-10-13 9:40 ` Arnd Bergmann
1 sibling, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 9:40 UTC (permalink / raw)
To: yalin wang
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
On Tuesday 13 October 2015 15:33:10 yalin wang wrote:
>
> > On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
> >
> >> --- a/include/asm-generic/vmlinux.lds.h
> >> +++ b/include/asm-generic/vmlinux.lds.h
> >>
> >> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> >> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> >
> > A few comments:
> >
> > 1) - please align the backslash at the end of the
> > line with the backslash above it.
> > 2) - you need to fix all the remaining users of BSS_SECTION.
> > 3) - do we really need the flexibility to specify an alignment (stop_align)?
> > If not - drop the extra argument.
> >
> > Sam
> i change lots of __initdata to __initbss to test it on ARM arch,
>
Ok, I found my mistake in the script I used to calculate the savings,
here is the correct output showing all uninitialized variables in
multi_v7_defconfig:
4 done.44688
1024 boot_command_line
1024 tmp_cmdline.44689
4 late_time_init
4 root_mount_data
4 root_fs_names
4 rd_doload
4 root_delay
64 saved_root_name
4 root_device_name
4 message
4 byte_count
4 victim
4 collected
8 this_header
4 state
4 collect
4 remains
4 next_state
8 header_buf
8 next_header
4 do_retain_initrd
4 name_len
4 body_len
4 gid
4 uid
4 mtime
4 wfd
4 vcollected
4 ino
4 mode
4 nlink
4 major
4 minor
4 rdev
4 symlink_buf
4 name_buf
64 msg_buf.29770
128 head
4 machine_desc
4 usermem.34390
4 __atags_pointer
1024 cmd_line
1024 default_command_line
1536 atags_copy
4 dma_mmu_remap_num
64 dma_mmu_remap
4 phys_initrd_start
4024 phys_initrd_size
4096 bm_pte
4 ecc_mask
4 initial_pmd_value
4 arm_lowmem_limit
24 s5p_mfc_mem
28 tx_pad_name
4 use_gptimer_clksrc
4 omap_table_init
4 mpurate
4 am35xx_aes_hwmod_ocp_ifs
4 am35xx_sham_hwmod_ocp_ifs
4 dra72x_hwmod_ocp_ifs
4 rx51_vibra_data
4 num_special_pds
128 special_pds
4 main_extable_sort_needed
4 new_log_buf_len
24 opts.36513
512 smap.22469
512 dmap.22470
64 group_map.22521
64 group_cnt.22522
4 pcpu_chosen_fc
4 vmlist
4 vm_init_off.26867
4 reset_managed_pages_done
116 boot_kmem_cache_node.32827
116 boot_kmem_cache.32826
4 dhash_entries
4 ihash_entries
4 mhash_entries
4 mphash_entries
256 nfs_root_parms
1028 nfs_export_path
1028 nfs_root_device
4 gic_cnt
4 threshold_index
4096 ata_force_param_buf
4 mtd_devs
2432 mtd_dev_param
8 m68k_probes
8 isa_probes
4 arch_timers_present
4 dt_root_size_cells
4 dt_root_addr_cells
4 imx_keep_uart_clocks
4 imx_uart_clocks
4 mt8173_top_clk_data
4 mt8173_pll_clk_data
4 cpg_mode
4 cpg_mode_rates
4 cpg_mode_divs
4 cpg_mode
4 cpg_mode
4 thash_entries
4 uhash_entries
4 ic_got_reply
4 ic_first_dev
4 ic_dev
16 user_dev_name
4 ic_dhcp_msgtype
4 ic_host_name_set
4 ic_dev_mtu
4 ic_set_manually
4 ic_enable
256 vendor_class_identifier
4 ic_proto_have_if
4 dma_reserve
4 nr_kernel_pages
4 nr_all_pages
196 __clk_of_table_sentinel
200 __rmem_of_table_sentinel
196 __clksrc_of_table_sentinel
200 __iommu_of_table_sentinel
8 __cpu_method_of_table_sentinel
8 __cpuidle_method_of_table_sentinel
196 irqchip_of_match_end
32 __earlycon_table_sentinel
200 __earlycon_of_table_sentinel
6 __irf_end
26398 total
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-13 9:40 ` Arnd Bergmann
0 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 9:40 UTC (permalink / raw)
To: yalin wang
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
On Tuesday 13 October 2015 15:33:10 yalin wang wrote:
>
> > On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
> >
> >> --- a/include/asm-generic/vmlinux.lds.h
> >> +++ b/include/asm-generic/vmlinux.lds.h
> >>
> >> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> >> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> >
> > A few comments:
> >
> > 1) - please align the backslash at the end of the
> > line with the backslash above it.
> > 2) - you need to fix all the remaining users of BSS_SECTION.
> > 3) - do we really need the flexibility to specify an alignment (stop_align)?
> > If not - drop the extra argument.
> >
> > Sam
> i change lots of __initdata to __initbss to test it on ARM arch,
>
Ok, I found my mistake in the script I used to calculate the savings,
here is the correct output showing all uninitialized variables in
multi_v7_defconfig:
4 done.44688
1024 boot_command_line
1024 tmp_cmdline.44689
4 late_time_init
4 root_mount_data
4 root_fs_names
4 rd_doload
4 root_delay
64 saved_root_name
4 root_device_name
4 message
4 byte_count
4 victim
4 collected
8 this_header
4 state
4 collect
4 remains
4 next_state
8 header_buf
8 next_header
4 do_retain_initrd
4 name_len
4 body_len
4 gid
4 uid
4 mtime
4 wfd
4 vcollected
4 ino
4 mode
4 nlink
4 major
4 minor
4 rdev
4 symlink_buf
4 name_buf
64 msg_buf.29770
128 head
4 machine_desc
4 usermem.34390
4 __atags_pointer
1024 cmd_line
1024 default_command_line
1536 atags_copy
4 dma_mmu_remap_num
64 dma_mmu_remap
4 phys_initrd_start
4024 phys_initrd_size
4096 bm_pte
4 ecc_mask
4 initial_pmd_value
4 arm_lowmem_limit
24 s5p_mfc_mem
28 tx_pad_name
4 use_gptimer_clksrc
4 omap_table_init
4 mpurate
4 am35xx_aes_hwmod_ocp_ifs
4 am35xx_sham_hwmod_ocp_ifs
4 dra72x_hwmod_ocp_ifs
4 rx51_vibra_data
4 num_special_pds
128 special_pds
4 main_extable_sort_needed
4 new_log_buf_len
24 opts.36513
512 smap.22469
512 dmap.22470
64 group_map.22521
64 group_cnt.22522
4 pcpu_chosen_fc
4 vmlist
4 vm_init_off.26867
4 reset_managed_pages_done
116 boot_kmem_cache_node.32827
116 boot_kmem_cache.32826
4 dhash_entries
4 ihash_entries
4 mhash_entries
4 mphash_entries
256 nfs_root_parms
1028 nfs_export_path
1028 nfs_root_device
4 gic_cnt
4 threshold_index
4096 ata_force_param_buf
4 mtd_devs
2432 mtd_dev_param
8 m68k_probes
8 isa_probes
4 arch_timers_present
4 dt_root_size_cells
4 dt_root_addr_cells
4 imx_keep_uart_clocks
4 imx_uart_clocks
4 mt8173_top_clk_data
4 mt8173_pll_clk_data
4 cpg_mode
4 cpg_mode_rates
4 cpg_mode_divs
4 cpg_mode
4 cpg_mode
4 thash_entries
4 uhash_entries
4 ic_got_reply
4 ic_first_dev
4 ic_dev
16 user_dev_name
4 ic_dhcp_msgtype
4 ic_host_name_set
4 ic_dev_mtu
4 ic_set_manually
4 ic_enable
256 vendor_class_identifier
4 ic_proto_have_if
4 dma_reserve
4 nr_kernel_pages
4 nr_all_pages
196 __clk_of_table_sentinel
200 __rmem_of_table_sentinel
196 __clksrc_of_table_sentinel
200 __iommu_of_table_sentinel
8 __cpu_method_of_table_sentinel
8 __cpuidle_method_of_table_sentinel
196 irqchip_of_match_end
32 __earlycon_table_sentinel
200 __earlycon_of_table_sentinel
6 __irf_end
26398 total
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
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^ permalink raw reply [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-13 9:40 ` Arnd Bergmann
0 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 9:40 UTC (permalink / raw)
To: linux-arm-kernel
On Tuesday 13 October 2015 15:33:10 yalin wang wrote:
>
> > On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
> >
> >> --- a/include/asm-generic/vmlinux.lds.h
> >> +++ b/include/asm-generic/vmlinux.lds.h
> >>
> >> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
> >> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
> >
> > A few comments:
> >
> > 1) - please align the backslash at the end of the
> > line with the backslash above it.
> > 2) - you need to fix all the remaining users of BSS_SECTION.
> > 3) - do we really need the flexibility to specify an alignment (stop_align)?
> > If not - drop the extra argument.
> >
> > Sam
> i change lots of __initdata to __initbss to test it on ARM arch,
>
Ok, I found my mistake in the script I used to calculate the savings,
here is the correct output showing all uninitialized variables in
multi_v7_defconfig:
4 done.44688
1024 boot_command_line
1024 tmp_cmdline.44689
4 late_time_init
4 root_mount_data
4 root_fs_names
4 rd_doload
4 root_delay
64 saved_root_name
4 root_device_name
4 message
4 byte_count
4 victim
4 collected
8 this_header
4 state
4 collect
4 remains
4 next_state
8 header_buf
8 next_header
4 do_retain_initrd
4 name_len
4 body_len
4 gid
4 uid
4 mtime
4 wfd
4 vcollected
4 ino
4 mode
4 nlink
4 major
4 minor
4 rdev
4 symlink_buf
4 name_buf
64 msg_buf.29770
128 head
4 machine_desc
4 usermem.34390
4 __atags_pointer
1024 cmd_line
1024 default_command_line
1536 atags_copy
4 dma_mmu_remap_num
64 dma_mmu_remap
4 phys_initrd_start
4024 phys_initrd_size
4096 bm_pte
4 ecc_mask
4 initial_pmd_value
4 arm_lowmem_limit
24 s5p_mfc_mem
28 tx_pad_name
4 use_gptimer_clksrc
4 omap_table_init
4 mpurate
4 am35xx_aes_hwmod_ocp_ifs
4 am35xx_sham_hwmod_ocp_ifs
4 dra72x_hwmod_ocp_ifs
4 rx51_vibra_data
4 num_special_pds
128 special_pds
4 main_extable_sort_needed
4 new_log_buf_len
24 opts.36513
512 smap.22469
512 dmap.22470
64 group_map.22521
64 group_cnt.22522
4 pcpu_chosen_fc
4 vmlist
4 vm_init_off.26867
4 reset_managed_pages_done
116 boot_kmem_cache_node.32827
116 boot_kmem_cache.32826
4 dhash_entries
4 ihash_entries
4 mhash_entries
4 mphash_entries
256 nfs_root_parms
1028 nfs_export_path
1028 nfs_root_device
4 gic_cnt
4 threshold_index
4096 ata_force_param_buf
4 mtd_devs
2432 mtd_dev_param
8 m68k_probes
8 isa_probes
4 arch_timers_present
4 dt_root_size_cells
4 dt_root_addr_cells
4 imx_keep_uart_clocks
4 imx_uart_clocks
4 mt8173_top_clk_data
4 mt8173_pll_clk_data
4 cpg_mode
4 cpg_mode_rates
4 cpg_mode_divs
4 cpg_mode
4 cpg_mode
4 thash_entries
4 uhash_entries
4 ic_got_reply
4 ic_first_dev
4 ic_dev
16 user_dev_name
4 ic_dhcp_msgtype
4 ic_host_name_set
4 ic_dev_mtu
4 ic_set_manually
4 ic_enable
256 vendor_class_identifier
4 ic_proto_have_if
4 dma_reserve
4 nr_kernel_pages
4 nr_all_pages
196 __clk_of_table_sentinel
200 __rmem_of_table_sentinel
196 __clksrc_of_table_sentinel
200 __iommu_of_table_sentinel
8 __cpu_method_of_table_sentinel
8 __cpuidle_method_of_table_sentinel
196 irqchip_of_match_end
32 __earlycon_table_sentinel
200 __earlycon_of_table_sentinel
6 __irf_end
26398 total
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-13 9:40 ` Arnd Bergmann
(?)
@ 2015-10-13 9:51 ` yalin wang
-1 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-13 9:51 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
> On Oct 13, 2015, at 17:40, Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Tuesday 13 October 2015 15:33:10 yalin wang wrote:
>>
>>> On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
>>>
>>>> --- a/include/asm-generic/vmlinux.lds.h
>>>> +++ b/include/asm-generic/vmlinux.lds.h
>>>>
>>>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>>>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>>>
>>> A few comments:
>>>
>>> 1) - please align the backslash at the end of the
>>> line with the backslash above it.
>>> 2) - you need to fix all the remaining users of BSS_SECTION.
>>> 3) - do we really need the flexibility to specify an alignment (stop_align)?
>>> If not - drop the extra argument.
>>>
>>> Sam
>> i change lots of __initdata to __initbss to test it on ARM arch,
>>
>
> Ok, I found my mistake in the script I used to calculate the savings,
> here is the correct output showing all uninitialized variables in
> multi_v7_defconfig:
>
> 4 done.44688
> 1024 boot_command_line
> 1024 tmp_cmdline.44689
> 4 late_time_init
> 4 root_mount_data
> 4 root_fs_names
> 4 rd_doload
> 4 root_delay
> 64 saved_root_name
> 4 root_device_name
> 4 message
> 4 byte_count
> 4 victim
> 4 collected
> 8 this_header
> 4 state
> 4 collect
> 4 remains
> 4 next_state
> 8 header_buf
> 8 next_header
> 4 do_retain_initrd
> 4 name_len
> 4 body_len
> 4 gid
> 4 uid
> 4 mtime
> 4 wfd
> 4 vcollected
> 4 ino
> 4 mode
> 4 nlink
> 4 major
> 4 minor
> 4 rdev
> 4 symlink_buf
> 4 name_buf
> 64 msg_buf.29770
> 128 head
> 4 machine_desc
> 4 usermem.34390
> 4 __atags_pointer
> 1024 cmd_line
> 1024 default_command_line
> 1536 atags_copy
> 4 dma_mmu_remap_num
> 64 dma_mmu_remap
> 4 phys_initrd_start
> 4024 phys_initrd_size
> 4096 bm_pte
> 4 ecc_mask
> 4 initial_pmd_value
> 4 arm_lowmem_limit
> 24 s5p_mfc_mem
> 28 tx_pad_name
> 4 use_gptimer_clksrc
> 4 omap_table_init
> 4 mpurate
> 4 am35xx_aes_hwmod_ocp_ifs
> 4 am35xx_sham_hwmod_ocp_ifs
> 4 dra72x_hwmod_ocp_ifs
> 4 rx51_vibra_data
> 4 num_special_pds
> 128 special_pds
> 4 main_extable_sort_needed
> 4 new_log_buf_len
> 24 opts.36513
> 512 smap.22469
> 512 dmap.22470
> 64 group_map.22521
> 64 group_cnt.22522
> 4 pcpu_chosen_fc
> 4 vmlist
> 4 vm_init_off.26867
> 4 reset_managed_pages_done
> 116 boot_kmem_cache_node.32827
> 116 boot_kmem_cache.32826
> 4 dhash_entries
> 4 ihash_entries
> 4 mhash_entries
> 4 mphash_entries
> 256 nfs_root_parms
> 1028 nfs_export_path
> 1028 nfs_root_device
> 4 gic_cnt
> 4 threshold_index
> 4096 ata_force_param_buf
> 4 mtd_devs
> 2432 mtd_dev_param
> 8 m68k_probes
> 8 isa_probes
> 4 arch_timers_present
> 4 dt_root_size_cells
> 4 dt_root_addr_cells
> 4 imx_keep_uart_clocks
> 4 imx_uart_clocks
> 4 mt8173_top_clk_data
> 4 mt8173_pll_clk_data
> 4 cpg_mode
> 4 cpg_mode_rates
> 4 cpg_mode_divs
> 4 cpg_mode
> 4 cpg_mode
> 4 thash_entries
> 4 uhash_entries
> 4 ic_got_reply
> 4 ic_first_dev
> 4 ic_dev
> 16 user_dev_name
> 4 ic_dhcp_msgtype
> 4 ic_host_name_set
> 4 ic_dev_mtu
> 4 ic_set_manually
> 4 ic_enable
> 256 vendor_class_identifier
> 4 ic_proto_have_if
> 4 dma_reserve
> 4 nr_kernel_pages
> 4 nr_all_pages
> 196 __clk_of_table_sentinel
> 200 __rmem_of_table_sentinel
> 196 __clksrc_of_table_sentinel
> 200 __iommu_of_table_sentinel
> 8 __cpu_method_of_table_sentinel
> 8 __cpuidle_method_of_table_sentinel
> 196 irqchip_of_match_end
> 32 __earlycon_table_sentinel
> 200 __earlycon_of_table_sentinel
> 6 __irf_end
>
>
> 26398 total
i am curious about your scripts ,
could you show me ?
Thank you !
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-13 9:51 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-13 9:51 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
> On Oct 13, 2015, at 17:40, Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Tuesday 13 October 2015 15:33:10 yalin wang wrote:
>>
>>> On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
>>>
>>>> --- a/include/asm-generic/vmlinux.lds.h
>>>> +++ b/include/asm-generic/vmlinux.lds.h
>>>>
>>>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>>>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>>>
>>> A few comments:
>>>
>>> 1) - please align the backslash at the end of the
>>> line with the backslash above it.
>>> 2) - you need to fix all the remaining users of BSS_SECTION.
>>> 3) - do we really need the flexibility to specify an alignment (stop_align)?
>>> If not - drop the extra argument.
>>>
>>> Sam
>> i change lots of __initdata to __initbss to test it on ARM arch,
>>
>
> Ok, I found my mistake in the script I used to calculate the savings,
> here is the correct output showing all uninitialized variables in
> multi_v7_defconfig:
>
> 4 done.44688
> 1024 boot_command_line
> 1024 tmp_cmdline.44689
> 4 late_time_init
> 4 root_mount_data
> 4 root_fs_names
> 4 rd_doload
> 4 root_delay
> 64 saved_root_name
> 4 root_device_name
> 4 message
> 4 byte_count
> 4 victim
> 4 collected
> 8 this_header
> 4 state
> 4 collect
> 4 remains
> 4 next_state
> 8 header_buf
> 8 next_header
> 4 do_retain_initrd
> 4 name_len
> 4 body_len
> 4 gid
> 4 uid
> 4 mtime
> 4 wfd
> 4 vcollected
> 4 ino
> 4 mode
> 4 nlink
> 4 major
> 4 minor
> 4 rdev
> 4 symlink_buf
> 4 name_buf
> 64 msg_buf.29770
> 128 head
> 4 machine_desc
> 4 usermem.34390
> 4 __atags_pointer
> 1024 cmd_line
> 1024 default_command_line
> 1536 atags_copy
> 4 dma_mmu_remap_num
> 64 dma_mmu_remap
> 4 phys_initrd_start
> 4024 phys_initrd_size
> 4096 bm_pte
> 4 ecc_mask
> 4 initial_pmd_value
> 4 arm_lowmem_limit
> 24 s5p_mfc_mem
> 28 tx_pad_name
> 4 use_gptimer_clksrc
> 4 omap_table_init
> 4 mpurate
> 4 am35xx_aes_hwmod_ocp_ifs
> 4 am35xx_sham_hwmod_ocp_ifs
> 4 dra72x_hwmod_ocp_ifs
> 4 rx51_vibra_data
> 4 num_special_pds
> 128 special_pds
> 4 main_extable_sort_needed
> 4 new_log_buf_len
> 24 opts.36513
> 512 smap.22469
> 512 dmap.22470
> 64 group_map.22521
> 64 group_cnt.22522
> 4 pcpu_chosen_fc
> 4 vmlist
> 4 vm_init_off.26867
> 4 reset_managed_pages_done
> 116 boot_kmem_cache_node.32827
> 116 boot_kmem_cache.32826
> 4 dhash_entries
> 4 ihash_entries
> 4 mhash_entries
> 4 mphash_entries
> 256 nfs_root_parms
> 1028 nfs_export_path
> 1028 nfs_root_device
> 4 gic_cnt
> 4 threshold_index
> 4096 ata_force_param_buf
> 4 mtd_devs
> 2432 mtd_dev_param
> 8 m68k_probes
> 8 isa_probes
> 4 arch_timers_present
> 4 dt_root_size_cells
> 4 dt_root_addr_cells
> 4 imx_keep_uart_clocks
> 4 imx_uart_clocks
> 4 mt8173_top_clk_data
> 4 mt8173_pll_clk_data
> 4 cpg_mode
> 4 cpg_mode_rates
> 4 cpg_mode_divs
> 4 cpg_mode
> 4 cpg_mode
> 4 thash_entries
> 4 uhash_entries
> 4 ic_got_reply
> 4 ic_first_dev
> 4 ic_dev
> 16 user_dev_name
> 4 ic_dhcp_msgtype
> 4 ic_host_name_set
> 4 ic_dev_mtu
> 4 ic_set_manually
> 4 ic_enable
> 256 vendor_class_identifier
> 4 ic_proto_have_if
> 4 dma_reserve
> 4 nr_kernel_pages
> 4 nr_all_pages
> 196 __clk_of_table_sentinel
> 200 __rmem_of_table_sentinel
> 196 __clksrc_of_table_sentinel
> 200 __iommu_of_table_sentinel
> 8 __cpu_method_of_table_sentinel
> 8 __cpuidle_method_of_table_sentinel
> 196 irqchip_of_match_end
> 32 __earlycon_table_sentinel
> 200 __earlycon_of_table_sentinel
> 6 __irf_end
>
>
> 26398 total
i am curious about your scripts ,
could you show me ?
Thank you !
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-13 9:51 ` yalin wang
0 siblings, 0 replies; 31+ messages in thread
From: yalin wang @ 2015-10-13 9:51 UTC (permalink / raw)
To: linux-arm-kernel
> On Oct 13, 2015, at 17:40, Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Tuesday 13 October 2015 15:33:10 yalin wang wrote:
>>
>>> On Oct 13, 2015, at 04:04, Sam Ravnborg <sam@ravnborg.org> wrote:
>>>
>>>> --- a/include/asm-generic/vmlinux.lds.h
>>>> +++ b/include/asm-generic/vmlinux.lds.h
>>>>
>>>> -#define BSS_SECTION(sbss_align, bss_align, stop_align) \
>>>> +#define BSS_SECTION(sbss_align, bss_align, initbss_align, stop_align) \
>>>
>>> A few comments:
>>>
>>> 1) - please align the backslash at the end of the
>>> line with the backslash above it.
>>> 2) - you need to fix all the remaining users of BSS_SECTION.
>>> 3) - do we really need the flexibility to specify an alignment (stop_align)?
>>> If not - drop the extra argument.
>>>
>>> Sam
>> i change lots of __initdata to __initbss to test it on ARM arch,
>>
>
> Ok, I found my mistake in the script I used to calculate the savings,
> here is the correct output showing all uninitialized variables in
> multi_v7_defconfig:
>
> 4 done.44688
> 1024 boot_command_line
> 1024 tmp_cmdline.44689
> 4 late_time_init
> 4 root_mount_data
> 4 root_fs_names
> 4 rd_doload
> 4 root_delay
> 64 saved_root_name
> 4 root_device_name
> 4 message
> 4 byte_count
> 4 victim
> 4 collected
> 8 this_header
> 4 state
> 4 collect
> 4 remains
> 4 next_state
> 8 header_buf
> 8 next_header
> 4 do_retain_initrd
> 4 name_len
> 4 body_len
> 4 gid
> 4 uid
> 4 mtime
> 4 wfd
> 4 vcollected
> 4 ino
> 4 mode
> 4 nlink
> 4 major
> 4 minor
> 4 rdev
> 4 symlink_buf
> 4 name_buf
> 64 msg_buf.29770
> 128 head
> 4 machine_desc
> 4 usermem.34390
> 4 __atags_pointer
> 1024 cmd_line
> 1024 default_command_line
> 1536 atags_copy
> 4 dma_mmu_remap_num
> 64 dma_mmu_remap
> 4 phys_initrd_start
> 4024 phys_initrd_size
> 4096 bm_pte
> 4 ecc_mask
> 4 initial_pmd_value
> 4 arm_lowmem_limit
> 24 s5p_mfc_mem
> 28 tx_pad_name
> 4 use_gptimer_clksrc
> 4 omap_table_init
> 4 mpurate
> 4 am35xx_aes_hwmod_ocp_ifs
> 4 am35xx_sham_hwmod_ocp_ifs
> 4 dra72x_hwmod_ocp_ifs
> 4 rx51_vibra_data
> 4 num_special_pds
> 128 special_pds
> 4 main_extable_sort_needed
> 4 new_log_buf_len
> 24 opts.36513
> 512 smap.22469
> 512 dmap.22470
> 64 group_map.22521
> 64 group_cnt.22522
> 4 pcpu_chosen_fc
> 4 vmlist
> 4 vm_init_off.26867
> 4 reset_managed_pages_done
> 116 boot_kmem_cache_node.32827
> 116 boot_kmem_cache.32826
> 4 dhash_entries
> 4 ihash_entries
> 4 mhash_entries
> 4 mphash_entries
> 256 nfs_root_parms
> 1028 nfs_export_path
> 1028 nfs_root_device
> 4 gic_cnt
> 4 threshold_index
> 4096 ata_force_param_buf
> 4 mtd_devs
> 2432 mtd_dev_param
> 8 m68k_probes
> 8 isa_probes
> 4 arch_timers_present
> 4 dt_root_size_cells
> 4 dt_root_addr_cells
> 4 imx_keep_uart_clocks
> 4 imx_uart_clocks
> 4 mt8173_top_clk_data
> 4 mt8173_pll_clk_data
> 4 cpg_mode
> 4 cpg_mode_rates
> 4 cpg_mode_divs
> 4 cpg_mode
> 4 cpg_mode
> 4 thash_entries
> 4 uhash_entries
> 4 ic_got_reply
> 4 ic_first_dev
> 4 ic_dev
> 16 user_dev_name
> 4 ic_dhcp_msgtype
> 4 ic_host_name_set
> 4 ic_dev_mtu
> 4 ic_set_manually
> 4 ic_enable
> 256 vendor_class_identifier
> 4 ic_proto_have_if
> 4 dma_reserve
> 4 nr_kernel_pages
> 4 nr_all_pages
> 196 __clk_of_table_sentinel
> 200 __rmem_of_table_sentinel
> 196 __clksrc_of_table_sentinel
> 200 __iommu_of_table_sentinel
> 8 __cpu_method_of_table_sentinel
> 8 __cpuidle_method_of_table_sentinel
> 196 irqchip_of_match_end
> 32 __earlycon_table_sentinel
> 200 __earlycon_of_table_sentinel
> 6 __irf_end
>
>
> 26398 total
i am curious about your scripts ,
could you show me ?
Thank you !
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-13 9:51 ` yalin wang
(?)
@ 2015-10-13 11:28 ` Arnd Bergmann
-1 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 11:28 UTC (permalink / raw)
To: yalin wang
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
On Tuesday 13 October 2015 17:51:32 yalin wang wrote:
> > 32 __earlycon_table_sentinel
> > 200 __earlycon_of_table_sentinel
> > 6 __irf_end
> >
> >
> > 26398 total
> i am curious about your scripts ,
> could you show me ?
I was using some ad-hoc command line tricks, including
objcopy -j .init.data build/multi_v7_defconfig/vmlinux /tmp/initdata
nm initdata | sort -n | { read start b sym ; while read a b c ; do objdump -Dr --start-address=0x$start --stop-address=0x$a initdata > initdata.d/$sym ; start=$a ; sym=$c ; done }
(some manual sorting to delete the files that have pre-initialized symbols)
sum=0 ; nm /tmp/initdata | sort -n | { read start b sym ; while read a b c ; do test -e ../$sym && { echo $[0x$a - 0x$start]\ $sym ; sum=$[$sum + $[0x$a - 0x$start]] ; } ; start=$a ; sym=$c ; done ; echo $sum;}
I'm sure there are better ways to do this, and the manual step I used at
first was faulty.
Arnd
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
2015-10-13 9:51 ` yalin wang
` (2 preceding siblings ...)
(?)
@ 2015-10-13 11:28 ` Arnd Bergmann
-1 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 11:28 UTC (permalink / raw)
To: yalin wang
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
On Tuesday 13 October 2015 17:51:32 yalin wang wrote:
> > 32 __earlycon_table_sentinel
> > 200 __earlycon_of_table_sentinel
> > 6 __irf_end
> >
> >
> > 26398 total
> i am curious about your scripts ,
> could you show me ?
I was using some ad-hoc command line tricks, including
objcopy -j .init.data build/multi_v7_defconfig/vmlinux /tmp/initdata
nm initdata | sort -n | { read start b sym ; while read a b c ; do objdump -Dr --start-address=0x$start --stop-address=0x$a initdata > initdata.d/$sym ; start=$a ; sym=$c ; done }
(some manual sorting to delete the files that have pre-initialized symbols)
sum=0 ; nm /tmp/initdata | sort -n | { read start b sym ; while read a b c ; do test -e ../$sym && { echo $[0x$a - 0x$start]\ $sym ; sum=$[$sum + $[0x$a - 0x$start]] ; } ; start=$a ; sym=$c ; done ; echo $sum;}
I'm sure there are better ways to do this, and the manual step I used at
first was faulty.
Arnd
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [RFC] arm: add __initbss section attribute
@ 2015-10-13 11:28 ` Arnd Bergmann
0 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 11:28 UTC (permalink / raw)
To: yalin wang
Cc: Sam Ravnborg, Russell King - ARM Linux, Ard Biesheuvel,
Will Deacon, Nicolas Pitre, Kees Cook, Catalin Marinas,
Victor Kamensky, Mark Salter, vladimir.murzin, ggdavisiv,
paul.gortmaker, mingo, rusty, mcgrof, akpm, kirill.shutemov,
n-horiguchi, aarcange, mhocko, jack, iamjoonsoo.kim, xiexiuqi,
vbabka, Vineet.Gupta1, linux-arm-kernel, linux-kernel,
linux-arch, linux-mm
On Tuesday 13 October 2015 17:51:32 yalin wang wrote:
> > 32 __earlycon_table_sentinel
> > 200 __earlycon_of_table_sentinel
> > 6 __irf_end
> >
> >
> > 26398 total
> i am curious about your scripts ,
> could you show me ?
I was using some ad-hoc command line tricks, including
objcopy -j .init.data build/multi_v7_defconfig/vmlinux /tmp/initdata
nm initdata | sort -n | { read start b sym ; while read a b c ; do objdump -Dr --start-address=0x$start --stop-address=0x$a initdata > initdata.d/$sym ; start=$a ; sym=$c ; done }
(some manual sorting to delete the files that have pre-initialized symbols)
sum=0 ; nm /tmp/initdata | sort -n | { read start b sym ; while read a b c ; do test -e ../$sym && { echo $[0x$a - 0x$start]\ $sym ; sum=$[$sum + $[0x$a - 0x$start]] ; } ; start=$a ; sym=$c ; done ; echo $sum;}
I'm sure there are better ways to do this, and the manual step I used at
first was faulty.
Arnd
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 31+ messages in thread
* [RFC] arm: add __initbss section attribute
@ 2015-10-13 11:28 ` Arnd Bergmann
0 siblings, 0 replies; 31+ messages in thread
From: Arnd Bergmann @ 2015-10-13 11:28 UTC (permalink / raw)
To: linux-arm-kernel
On Tuesday 13 October 2015 17:51:32 yalin wang wrote:
> > 32 __earlycon_table_sentinel
> > 200 __earlycon_of_table_sentinel
> > 6 __irf_end
> >
> >
> > 26398 total
> i am curious about your scripts ,
> could you show me ?
I was using some ad-hoc command line tricks, including
objcopy -j .init.data build/multi_v7_defconfig/vmlinux /tmp/initdata
nm initdata | sort -n | { read start b sym ; while read a b c ; do objdump -Dr --start-address=0x$start --stop-address=0x$a initdata > initdata.d/$sym ; start=$a ; sym=$c ; done }
(some manual sorting to delete the files that have pre-initialized symbols)
sum=0 ; nm /tmp/initdata | sort -n | { read start b sym ; while read a b c ; do test -e ../$sym && { echo $[0x$a - 0x$start]\ $sym ; sum=$[$sum + $[0x$a - 0x$start]] ; } ; start=$a ; sym=$c ; done ; echo $sum;}
I'm sure there are better ways to do this, and the manual step I used at
first was faulty.
Arnd
^ permalink raw reply [flat|nested] 31+ messages in thread
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2015-10-12 3:59 [RFC] arm: add __initbss section attribute yalin wang
2015-10-12 3:59 ` yalin wang
2015-10-12 3:59 ` yalin wang
2015-10-12 8:22 ` Ard Biesheuvel
2015-10-12 8:22 ` Ard Biesheuvel
2015-10-12 8:22 ` Ard Biesheuvel
2015-10-12 8:22 ` Ard Biesheuvel
2015-10-12 8:22 ` Ard Biesheuvel
2015-10-12 8:46 ` yalin wang
2015-10-12 8:46 ` yalin wang
2015-10-12 8:46 ` yalin wang
2015-10-12 8:46 ` yalin wang
2015-10-12 8:46 ` yalin wang
2015-10-12 10:21 ` Arnd Bergmann
2015-10-12 10:21 ` Arnd Bergmann
2015-10-12 10:21 ` Arnd Bergmann
2015-10-12 20:04 ` Sam Ravnborg
2015-10-12 20:04 ` Sam Ravnborg
2015-10-12 20:04 ` Sam Ravnborg
2015-10-13 7:33 ` yalin wang
2015-10-13 9:40 ` Arnd Bergmann
2015-10-13 9:40 ` Arnd Bergmann
2015-10-13 9:40 ` Arnd Bergmann
2015-10-13 9:51 ` yalin wang
2015-10-13 9:51 ` yalin wang
2015-10-13 9:51 ` yalin wang
2015-10-13 11:28 ` Arnd Bergmann
2015-10-13 11:28 ` Arnd Bergmann
2015-10-13 11:28 ` Arnd Bergmann
2015-10-13 11:28 ` Arnd Bergmann
2015-10-13 9:40 ` Arnd Bergmann
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