lkml.org 
[lkml]   [2018]   [Sep]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 21/22] x86: jump_label: introduce ASM_STATIC_KEY_INIT_{TRUE,FALSE}
Date
These will be useful when defining the contents of (a struct containing)
a static key in inline assembly.

Cc: x86@kernel.org
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
arch/x86/include/asm/jump_label.h | 18 ++++++++++++++++++
include/linux/jump_label.h | 2 ++
2 files changed, 20 insertions(+)

diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h
index 8c0de4282659..2736f7ff6806 100644
--- a/arch/x86/include/asm/jump_label.h
+++ b/arch/x86/include/asm/jump_label.h
@@ -110,4 +110,22 @@ struct jump_entry {

#endif /* __ASSEMBLY__ */

+#ifdef CONFIG_X86_64
+#define ASM_STATIC_KEY_INIT_TRUE \
+ "\t.long 1 \t# .enabled\n" \
+ "\t.long 0 \t# <padding>\n" \
+ "\t.quad "__stringify(__JUMP_TYPE_TRUE)"\t# .type\n"
+#define ASM_STATIC_KEY_INIT_FALSE \
+ "\t.long 0 \t# .enabled\n" \
+ "\t.long 0 \t# <padding>\n" \
+ "\t.quad "__stringify(__JUMP_TYPE_FALSE)"\t# .type\n"
+#else
+#define ASM_STATIC_KEY_INIT_TRUE \
+ "\t.long 1 \t# .enabled\n" \
+ "\t.long "__stringify(__JUMP_TYPE_TRUE)"\t# .type\n"
+#define ASM_STATIC_KEY_INIT_FALSE \
+ "\t.long 0 \t# .enabled\n" \
+ "\t.long "__stringify(__JUMP_TYPE_FALSE)"\t# .type\n"
+#endif
+
#endif
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
index 1a0b6f17a5d6..6e98193ae708 100644
--- a/include/linux/jump_label.h
+++ b/include/linux/jump_label.h
@@ -132,6 +132,8 @@ struct module;

#ifdef HAVE_JUMP_LABEL

+#define __JUMP_TYPE_FALSE 0
+#define __JUMP_TYPE_TRUE 1
#define JUMP_TYPE_FALSE 0UL
#define JUMP_TYPE_TRUE 1UL
#define JUMP_TYPE_LINKED 2UL
--
2.16.4
\
 
 \ /
  Last update: 2018-09-20 00:06    [W:0.430 / U:6.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site