Contributors: 12
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Peter Zijlstra |
51 |
30.72% |
5 |
27.78% |
| Alice Ryhl |
31 |
18.67% |
1 |
5.56% |
| Jason Baron |
25 |
15.06% |
2 |
11.11% |
| Andrew Lutomirski |
15 |
9.04% |
1 |
5.56% |
| Linus Torvalds |
13 |
7.83% |
1 |
5.56% |
| George Guo |
11 |
6.63% |
1 |
5.56% |
| Daniel Bristot de Oliveira |
8 |
4.82% |
2 |
11.11% |
| Jason Gerecke |
4 |
2.41% |
1 |
5.56% |
| Anton Blanchard |
3 |
1.81% |
1 |
5.56% |
| Josh Poimboeuf |
3 |
1.81% |
1 |
5.56% |
| Ingo Molnar |
1 |
0.60% |
1 |
5.56% |
| Greg Kroah-Hartman |
1 |
0.60% |
1 |
5.56% |
| Total |
166 |
|
18 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_JUMP_LABEL_H
#define _ASM_X86_JUMP_LABEL_H
#define HAVE_JUMP_LABEL_BATCH
#include <asm/asm.h>
#include <asm/nops.h>
#ifndef __ASSEMBLY__
#include <linux/stringify.h>
#include <linux/types.h>
#define JUMP_TABLE_ENTRY(key, label) \
".pushsection __jump_table, \"aw\" \n\t" \
_ASM_ALIGN "\n\t" \
".long 1b - . \n\t" \
".long " label " - . \n\t" \
_ASM_PTR " " key " - . \n\t" \
".popsection \n\t"
/* This macro is also expanded on the Rust side. */
#ifdef CONFIG_HAVE_JUMP_LABEL_HACK
#define ARCH_STATIC_BRANCH_ASM(key, label) \
"1: jmp " label " # objtool NOPs this \n\t" \
JUMP_TABLE_ENTRY(key " + 2", label)
#else /* !CONFIG_HAVE_JUMP_LABEL_HACK */
#define ARCH_STATIC_BRANCH_ASM(key, label) \
"1: .byte " __stringify(BYTES_NOP5) "\n\t" \
JUMP_TABLE_ENTRY(key, label)
#endif /* CONFIG_HAVE_JUMP_LABEL_HACK */
static __always_inline bool arch_static_branch(struct static_key * const key, const bool branch)
{
asm goto(ARCH_STATIC_BRANCH_ASM("%c0 + %c1", "%l[l_yes]")
: : "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 goto("1:"
"jmp %l[l_yes]\n\t"
JUMP_TABLE_ENTRY("%c0 + %c1", "%l[l_yes]")
: : "i" (key), "i" (branch) : : l_yes);
return false;
l_yes:
return true;
}
extern int arch_jump_entry_size(struct jump_entry *entry);
#endif /* __ASSEMBLY__ */
#endif