Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Michael Ellerman |
72 |
40.45% |
2 |
22.22% |
| Peter Zijlstra |
64 |
35.96% |
1 |
11.11% |
| Ingo Molnar |
20 |
11.24% |
2 |
22.22% |
| Anton Blanchard |
17 |
9.55% |
1 |
11.11% |
| Jason Baron |
2 |
1.12% |
1 |
11.11% |
| Thomas Gleixner |
2 |
1.12% |
1 |
11.11% |
| Christophe Leroy |
1 |
0.56% |
1 |
11.11% |
| Total |
178 |
|
9 |
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_POWERPC_JUMP_LABEL_H
#define _ASM_POWERPC_JUMP_LABEL_H
/*
* Copyright 2010 Michael Ellerman, IBM Corp.
*/
#ifndef __ASSEMBLY__
#include <linux/types.h>
#include <asm/feature-fixups.h>
#include <asm/asm-const.h>
#define JUMP_ENTRY_TYPE stringify_in_c(FTR_ENTRY_LONG)
#define JUMP_LABEL_NOP_SIZE 4
static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm_volatile_goto("1:\n\t"
"nop # arch_static_branch\n\t"
".pushsection __jump_table, \"aw\"\n\t"
JUMP_ENTRY_TYPE "1b, %l[l_yes], %c0\n\t"
".popsection \n\t"
: : "i" (&((char *)key)[branch]) : : l_yes);
return false;
l_yes:
return true;
}
static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
{
asm_volatile_goto("1:\n\t"
"b %l[l_yes] # arch_static_branch_jump\n\t"
".pushsection __jump_table, \"aw\"\n\t"
JUMP_ENTRY_TYPE "1b, %l[l_yes], %c0\n\t"
".popsection \n\t"
: : "i" (&((char *)key)[branch]) : : l_yes);
return false;
l_yes:
return true;
}
#ifdef CONFIG_PPC64
typedef u64 jump_label_t;
#else
typedef u32 jump_label_t;
#endif
struct jump_entry {
jump_label_t code;
jump_label_t target;
jump_label_t key;
};
#else
#define ARCH_STATIC_BRANCH(LABEL, KEY) \
1098: nop; \
.pushsection __jump_table, "aw"; \
FTR_ENTRY_LONG 1098b, LABEL, KEY; \
.popsection
#endif
#endif /* _ASM_POWERPC_JUMP_LABEL_H */