diff mbox

[1/3] jump_label: Allow asm/jump_label.h to be included in assembly

Message ID 1420626958-31254-1-git-send-email-anton@samba.org (mailing list archive)
State Changes Requested
Headers show

Commit Message

Anton Blanchard Jan. 7, 2015, 10:35 a.m. UTC
Wrap asm/jump_label.h for all archs with #ifndef __ASSEMBLY__.
Since these are kernel only headers, we don't need #ifdef __KERNEL__
so can simplify things a bit.

If an architecture wants to use jump labels in assembly, it
will still need to define a macro to create the __jump_table
entries (see ARCH_STATIC_BRANCH in the powerpc asm/jump_label.h
for an example).

Signed-off-by: Anton Blanchard <anton@samba.org>
---
 arch/arm/include/asm/jump_label.h   | 5 ++---
 arch/arm64/include/asm/jump_label.h | 8 ++++----
 arch/mips/include/asm/jump_label.h  | 7 +++----
 arch/s390/include/asm/jump_label.h  | 3 +++
 arch/sparc/include/asm/jump_label.h | 5 ++---
 arch/x86/include/asm/jump_label.h   | 5 ++---
 6 files changed, 16 insertions(+), 17 deletions(-)

Comments

Will Deacon Jan. 7, 2015, 11:30 a.m. UTC | #1
On Wed, Jan 07, 2015 at 10:35:56AM +0000, Anton Blanchard wrote:
> Wrap asm/jump_label.h for all archs with #ifndef __ASSEMBLY__.
> Since these are kernel only headers, we don't need #ifdef __KERNEL__
> so can simplify things a bit.
> 
> If an architecture wants to use jump labels in assembly, it
> will still need to define a macro to create the __jump_table
> entries (see ARCH_STATIC_BRANCH in the powerpc asm/jump_label.h
> for an example).
> 
> Signed-off-by: Anton Blanchard <anton@samba.org>
> ---
>  arch/arm/include/asm/jump_label.h   | 5 ++---
>  arch/arm64/include/asm/jump_label.h | 8 ++++----
>  arch/mips/include/asm/jump_label.h  | 7 +++----
>  arch/s390/include/asm/jump_label.h  | 3 +++
>  arch/sparc/include/asm/jump_label.h | 5 ++---
>  arch/x86/include/asm/jump_label.h   | 5 ++---
>  6 files changed, 16 insertions(+), 17 deletions(-)

[...]

> diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h
> index 076a1c7..c0e5165 100644
> --- a/arch/arm64/include/asm/jump_label.h
> +++ b/arch/arm64/include/asm/jump_label.h
> @@ -18,11 +18,12 @@
>   */
>  #ifndef __ASM_JUMP_LABEL_H
>  #define __ASM_JUMP_LABEL_H
> +
> +#ifndef __ASSEMBLY__
> +
>  #include <linux/types.h>
>  #include <asm/insn.h>
>  
> -#ifdef __KERNEL__
> -
>  #define JUMP_LABEL_NOP_SIZE		AARCH64_INSN_SIZE
>  
>  static __always_inline bool arch_static_branch(struct static_key *key)
> @@ -39,8 +40,6 @@ l_yes:
>  	return true;
>  }
>  
> -#endif /* __KERNEL__ */
> -
>  typedef u64 jump_label_t;
>  
>  struct jump_entry {
> @@ -49,4 +48,5 @@ struct jump_entry {
>  	jump_label_t key;
>  };
>  
> +#endif  /* __ASSEMBLY__ */
>  #endif	/* __ASM_JUMP_LABEL_H */

The arm64 bit looks fine to me:

  Acked-by: Will Deacon <will.deacon@arm.com>

Will
diff mbox

Patch

diff --git a/arch/arm/include/asm/jump_label.h b/arch/arm/include/asm/jump_label.h
index 70f9b9b..5f337dc 100644
--- a/arch/arm/include/asm/jump_label.h
+++ b/arch/arm/include/asm/jump_label.h
@@ -1,7 +1,7 @@ 
 #ifndef _ASM_ARM_JUMP_LABEL_H
 #define _ASM_ARM_JUMP_LABEL_H
 
-#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
 
 #include <linux/types.h>
 
@@ -27,8 +27,6 @@  l_yes:
 	return true;
 }
 
-#endif /* __KERNEL__ */
-
 typedef u32 jump_label_t;
 
 struct jump_entry {
@@ -37,4 +35,5 @@  struct jump_entry {
 	jump_label_t key;
 };
 
+#endif  /* __ASSEMBLY__ */
 #endif
diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h
index 076a1c7..c0e5165 100644
--- a/arch/arm64/include/asm/jump_label.h
+++ b/arch/arm64/include/asm/jump_label.h
@@ -18,11 +18,12 @@ 
  */
 #ifndef __ASM_JUMP_LABEL_H
 #define __ASM_JUMP_LABEL_H
+
+#ifndef __ASSEMBLY__
+
 #include <linux/types.h>
 #include <asm/insn.h>
 
-#ifdef __KERNEL__
-
 #define JUMP_LABEL_NOP_SIZE		AARCH64_INSN_SIZE
 
 static __always_inline bool arch_static_branch(struct static_key *key)
@@ -39,8 +40,6 @@  l_yes:
 	return true;
 }
 
-#endif /* __KERNEL__ */
-
 typedef u64 jump_label_t;
 
 struct jump_entry {
@@ -49,4 +48,5 @@  struct jump_entry {
 	jump_label_t key;
 };
 
+#endif  /* __ASSEMBLY__ */
 #endif	/* __ASM_JUMP_LABEL_H */
diff --git a/arch/mips/include/asm/jump_label.h b/arch/mips/include/asm/jump_label.h
index fdbff44..608aa57 100644
--- a/arch/mips/include/asm/jump_label.h
+++ b/arch/mips/include/asm/jump_label.h
@@ -8,9 +8,9 @@ 
 #ifndef _ASM_MIPS_JUMP_LABEL_H
 #define _ASM_MIPS_JUMP_LABEL_H
 
-#include <linux/types.h>
+#ifndef __ASSEMBLY__
 
-#ifdef __KERNEL__
+#include <linux/types.h>
 
 #define JUMP_LABEL_NOP_SIZE 4
 
@@ -39,8 +39,6 @@  l_yes:
 	return true;
 }
 
-#endif /* __KERNEL__ */
-
 #ifdef CONFIG_64BIT
 typedef u64 jump_label_t;
 #else
@@ -53,4 +51,5 @@  struct jump_entry {
 	jump_label_t key;
 };
 
+#endif  /* __ASSEMBLY__ */
 #endif /* _ASM_MIPS_JUMP_LABEL_H */
diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h
index 346b1c8..1e78ffd 100644
--- a/arch/s390/include/asm/jump_label.h
+++ b/arch/s390/include/asm/jump_label.h
@@ -1,6 +1,8 @@ 
 #ifndef _ASM_S390_JUMP_LABEL_H
 #define _ASM_S390_JUMP_LABEL_H
 
+#ifndef __ASSEMBLY__
+
 #include <linux/types.h>
 
 #define JUMP_LABEL_NOP_SIZE 6
@@ -34,4 +36,5 @@  struct jump_entry {
 	jump_label_t key;
 };
 
+#endif  /* __ASSEMBLY__ */
 #endif
diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h
index ec2e2e2..cc9b04a 100644
--- a/arch/sparc/include/asm/jump_label.h
+++ b/arch/sparc/include/asm/jump_label.h
@@ -1,7 +1,7 @@ 
 #ifndef _ASM_SPARC_JUMP_LABEL_H
 #define _ASM_SPARC_JUMP_LABEL_H
 
-#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
 
 #include <linux/types.h>
 
@@ -22,8 +22,6 @@  l_yes:
 	return true;
 }
 
-#endif /* __KERNEL__ */
-
 typedef u32 jump_label_t;
 
 struct jump_entry {
@@ -32,4 +30,5 @@  struct jump_entry {
 	jump_label_t key;
 };
 
+#endif  /* __ASSEMBLY__ */
 #endif
diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h
index 6a2cefb..a4c1cf7 100644
--- a/arch/x86/include/asm/jump_label.h
+++ b/arch/x86/include/asm/jump_label.h
@@ -1,7 +1,7 @@ 
 #ifndef _ASM_X86_JUMP_LABEL_H
 #define _ASM_X86_JUMP_LABEL_H
 
-#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
 
 #include <linux/stringify.h>
 #include <linux/types.h>
@@ -30,8 +30,6 @@  l_yes:
 	return true;
 }
 
-#endif /* __KERNEL__ */
-
 #ifdef CONFIG_X86_64
 typedef u64 jump_label_t;
 #else
@@ -44,4 +42,5 @@  struct jump_entry {
 	jump_label_t key;
 };
 
+#endif  /* __ASSEMBLY__ */
 #endif