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2c749f734e
Switch to the batched version of the jump label update functions so instruction cache maintenance is deferred until the end of the update. Signed-off-by: Youling Tang <tangyouling@kylinos.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
31 lines
674 B
C
31 lines
674 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2023 Loongson Technology Corporation Limited
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*
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* Based on arch/arm64/kernel/jump_label.c
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*/
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#include <linux/kernel.h>
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#include <linux/jump_label.h>
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#include <asm/cacheflush.h>
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#include <asm/inst.h>
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bool arch_jump_label_transform_queue(struct jump_entry *entry, enum jump_label_type type)
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{
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u32 insn;
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void *addr = (void *)jump_entry_code(entry);
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if (type == JUMP_LABEL_JMP)
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insn = larch_insn_gen_b(jump_entry_code(entry), jump_entry_target(entry));
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else
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insn = larch_insn_gen_nop();
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larch_insn_write(addr, insn);
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return true;
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}
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void arch_jump_label_transform_apply(void)
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{
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flush_icache_all();
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}
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