https://github.com/torvalds/linux
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Tip revision: 7daf201d7fe8334e2d2364d4e8ed3394ec9af819 authored by Linus Torvalds on 24 June 2018, 12:54:29 UTC
Linux 4.18-rc2
Tip revision: 7daf201
jump_label.c
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/jump_label.h>
#include <asm/patch.h>
#include <asm/insn.h>

#ifdef HAVE_JUMP_LABEL

static void __arch_jump_label_transform(struct jump_entry *entry,
					enum jump_label_type type,
					bool is_static)
{
	void *addr = (void *)entry->code;
	unsigned int insn;

	if (type == JUMP_LABEL_JMP)
		insn = arm_gen_branch(entry->code, entry->target);
	else
		insn = arm_gen_nop();

	if (is_static)
		__patch_text_early(addr, insn);
	else
		patch_text(addr, insn);
}

void arch_jump_label_transform(struct jump_entry *entry,
			       enum jump_label_type type)
{
	__arch_jump_label_transform(entry, type, false);
}

void arch_jump_label_transform_static(struct jump_entry *entry,
				      enum jump_label_type type)
{
	__arch_jump_label_transform(entry, type, true);
}

#endif
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