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Diffstat (limited to 'arch/arm64/include/asm/jump_label.h')
-rw-r--r--arch/arm64/include/asm/jump_label.h29
1 files changed, 16 insertions, 13 deletions
diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h
index 6aafbb789991..a0a5bbae7229 100644
--- a/arch/arm64/include/asm/jump_label.h
+++ b/arch/arm64/include/asm/jump_label.h
@@ -13,19 +13,26 @@
#include <linux/types.h>
#include <asm/insn.h>
+#define HAVE_JUMP_LABEL_BATCH
#define JUMP_LABEL_NOP_SIZE AARCH64_INSN_SIZE
+#define JUMP_TABLE_ENTRY(key, label) \
+ ".pushsection __jump_table, \"aw\"\n\t" \
+ ".align 3\n\t" \
+ ".long 1b - ., %l["#label"] - .\n\t" \
+ ".quad %c0 - .\n\t" \
+ ".popsection\n\t" \
+ : : "i"(key) : : label
+
static __always_inline bool arch_static_branch(struct static_key * const key,
const bool branch)
{
+ char *k = &((char *)key)[branch];
+
asm goto(
"1: nop \n\t"
- " .pushsection __jump_table, \"aw\" \n\t"
- " .align 3 \n\t"
- " .long 1b - ., %l[l_yes] - . \n\t"
- " .quad %c0 - . \n\t"
- " .popsection \n\t"
- : : "i"(&((char *)key)[branch]) : : l_yes);
+ JUMP_TABLE_ENTRY(k, l_yes)
+ );
return false;
l_yes:
@@ -35,15 +42,11 @@ l_yes:
static __always_inline bool arch_static_branch_jump(struct static_key * const key,
const bool branch)
{
+ char *k = &((char *)key)[branch];
asm goto(
"1: b %l[l_yes] \n\t"
- " .pushsection __jump_table, \"aw\" \n\t"
- " .align 3 \n\t"
- " .long 1b - ., %l[l_yes] - . \n\t"
- " .quad %c0 - . \n\t"
- " .popsection \n\t"
- : : "i"(&((char *)key)[branch]) : : l_yes);
-
+ JUMP_TABLE_ENTRY(k, l_yes)
+ );
return false;
l_yes:
return true;