diff options
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/jump_label.c | 23 |
2 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index e8b9818..ce4f7f1 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_MODULES) += module.o module_$(CONFIG_WORD_SIZE).o obj-$(CONFIG_44x) += cpu_setup_44x.o obj-$(CONFIG_PPC_FSL_BOOK3E) += cpu_setup_fsl_booke.o dbell.o obj-$(CONFIG_PPC_BOOK3E_64) += dbell.o +obj-$(CONFIG_JUMP_LABEL) += jump_label.o extra-y := head_$(CONFIG_WORD_SIZE).o extra-$(CONFIG_40x) := head_40x.o diff --git a/arch/powerpc/kernel/jump_label.c b/arch/powerpc/kernel/jump_label.c new file mode 100644 index 0000000..368d158 --- /dev/null +++ b/arch/powerpc/kernel/jump_label.c @@ -0,0 +1,23 @@ +/* + * Copyright 2010 Michael Ellerman, IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/jump_label.h> +#include <asm/code-patching.h> + +void arch_jump_label_transform(struct jump_entry *entry, + enum jump_label_type type) +{ + u32 *addr = (u32 *)(unsigned long)entry->code; + + if (type == JUMP_LABEL_ENABLE) + patch_branch(addr, entry->target, 0); + else + patch_instruction(addr, PPC_INST_NOP); +} |