Release 4.14 arch/arm64/kernel/jump_label.c

/*
 * Copyright (C) 2013 Huawei Ltd.
 * Author: Jiang Liu <liuj97@gmail.com>
 *
 * Based on arch/arm/kernel/jump_label.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <linux/kernel.h>
#include <linux/jump_label.h>
#include <asm/insn.h>

#ifdef HAVE_JUMP_LABEL



void arch_jump_label_transform(struct jump_entry *entry,
			       enum jump_label_type type)
{
	void *addr = (void *)entry->code;
	u32 insn;

	if (type == JUMP_LABEL_JMP) {
		insn = aarch64_insn_gen_branch_imm(entry->code,
						   entry->target,
						   AARCH64_INSN_BRANCH_NOLINK);
	} else {
		insn = aarch64_insn_gen_nop();
	}

	aarch64_insn_patch_text(&addr, &insn, 1);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jiang Liu
69
97.18%
1
33.33%
Peter Zijlstra
1
1.41%
1
33.33%
Mark Rutland
1
1.41%
1
33.33%
Total
71
100.00%
3
100.00%



void arch_jump_label_transform_static(struct jump_entry *entry,
				      enum jump_label_type type)
{
	/*
         * We use the architected A64 NOP in arch_static_branch, so there's no
         * need to patch an identical A64 NOP over the top of it here. The core
         * will call arch_jump_label_transform from a module notifier if the
         * NOP needs to be replaced by a branch.
         */
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jiang Liu
14
93.33%
1
50.00%
Mark Rutland
1
6.67%
1
50.00%
Total
15
100.00%
2
100.00%

#endif	/* HAVE_JUMP_LABEL */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Jiang Liu
99
97.06%
1
33.33%
Mark Rutland
2
1.96%
1
33.33%
Peter Zijlstra
1
0.98%
1
33.33%
Total
102
100.00%
3
100.00%
Directory: arch/arm64/kernel

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