Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ingo Molnar |
58 |
24.89% |
3 |
18.75% |
| Andrew Lutomirski |
53 |
22.75% |
1 |
6.25% |
| Peter Zijlstra |
52 |
22.32% |
3 |
18.75% |
| Jason Baron |
30 |
12.88% |
2 |
12.50% |
| Ard Biesheuvel |
18 |
7.73% |
1 |
6.25% |
| Nadav Amit |
10 |
4.29% |
1 |
6.25% |
| Jason Gerecke |
4 |
1.72% |
1 |
6.25% |
| Daniel Bristot de Oliveira |
3 |
1.29% |
1 |
6.25% |
| Anton Blanchard |
3 |
1.29% |
1 |
6.25% |
| Steven Rostedt |
1 |
0.43% |
1 |
6.25% |
| Greg Kroah-Hartman |
1 |
0.43% |
1 |
6.25% |
| Total |
233 |
|
16 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_JUMP_LABEL_H
#define _ASM_X86_JUMP_LABEL_H
#define HAVE_JUMP_LABEL_BATCH
#define JUMP_LABEL_NOP_SIZE 5
#include <asm/asm.h>
#include <asm/nops.h>
#ifndef __ASSEMBLY__
#include <linux/stringify.h>
#include <linux/types.h>
static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch)
{
asm_volatile_goto("1:"
".byte " __stringify(BYTES_NOP5) "\n\t"
".pushsection __jump_table, \"aw\" \n\t"
_ASM_ALIGN "\n\t"
".long 1b - ., %l[l_yes] - . \n\t"
_ASM_PTR "%c0 + %c1 - .\n\t"
".popsection \n\t"
: : "i" (key), "i" (branch) : : l_yes);
return false;
l_yes:
return true;
}
static __always_inline bool arch_static_branch_jump(struct static_key * const key, const bool branch)
{
asm_volatile_goto("1:"
".byte 0xe9\n\t .long %l[l_yes] - 2f\n\t"
"2:\n\t"
".pushsection __jump_table, \"aw\" \n\t"
_ASM_ALIGN "\n\t"
".long 1b - ., %l[l_yes] - . \n\t"
_ASM_PTR "%c0 + %c1 - .\n\t"
".popsection \n\t"
: : "i" (key), "i" (branch) : : l_yes);
return false;
l_yes:
return true;
}
#else /* __ASSEMBLY__ */
.macro STATIC_JUMP_IF_TRUE target, key, def
.Lstatic_jump_\@:
.if \def
/* Equivalent to "jmp.d32 \target" */
.byte 0xe9
.long \target - .Lstatic_jump_after_\@
.Lstatic_jump_after_\@:
.else
.byte BYTES_NOP5
.endif
.pushsection __jump_table, "aw"
_ASM_ALIGN
.long .Lstatic_jump_\@ - ., \target - .
_ASM_PTR \key - .
.popsection
.endm
.macro STATIC_JUMP_IF_FALSE target, key, def
.Lstatic_jump_\@:
.if \def
.byte BYTES_NOP5
.else
/* Equivalent to "jmp.d32 \target" */
.byte 0xe9
.long \target - .Lstatic_jump_after_\@
.Lstatic_jump_after_\@:
.endif
.pushsection __jump_table, "aw"
_ASM_ALIGN
.long .Lstatic_jump_\@ - ., \target - .
_ASM_PTR \key + 1 - .
.popsection
.endm
#endif /* __ASSEMBLY__ */
#endif